Relevant bibliographies by topics / Carbonation

Academic literature on the topic 'Carbonation'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 April 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Carbonation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Carbonation"

1

Cho, Kyungil, Yeryeong Kang, Sukbyung Chae, and Changhyuk Kim. "Forced Mineral Carbonation of MgO Nanoparticles Synthesized by Aerosol Methods at Room Temperature." Nanomaterials 13, no. 2 (January 9, 2023): 281. http://dx.doi.org/10.3390/nano13020281.

Full text
Abstract:
Magnesium oxide (MgO) has been investigated as a wet mineral carbonation adsorbent due to its relatively low adsorption and regeneration temperatures. The carbon dioxide (CO2) capture efficiency can be enhanced by applying external force on the MgO slurry during wet carbonation. In this study, two aerosol-processed MgO nanoparticles were tested with a commercial MgO one to investigate the external force effect on the wet carbonation performance at room temperature. The MgO nano-adsorbents were carbonated and sampled every 2 h up to 12 h through forced and non-forced wet carbonations. Hydrated magnesium carbonates (nesquehonite, artinite and hydromagnesite) were formed with magnesite through both wet carbonations. The analyzed results for the time-dependent chemical compositions and physical shapes of the carbonation products consistently showed the enhancement of wet carbonation by the external force, which was at least 4 h faster than the non-forced carbonation. In addition, the CO2 adsorption was enhanced by the forced carbonation, resulting in a higher amount of CO2 being adsorbed by MgO nanoparticles than the non-forced carbonation, unless the carbonation processes were completed. The adsorbed amount of CO2 was between the maximum theoretical amounts of CO2 adsorbed by nesquehonite and hydromagnesite.
APA, Harvard, Vancouver, ISO, and other styles
2

Abidoye, Luqman Kolawole, and Diganta B. Das. "Carbon Storage in Portland Cement Mortar: Influences of Hydration Stage, Carbonation Time and Aggregate Characteristics." Clean Technologies 3, no. 3 (July 30, 2021): 563–80. http://dx.doi.org/10.3390/cleantechnol3030034.

Full text
Abstract:
This study elucidates the effects of the particle size, carbonation time, curing time and pressure on the efficiency of carbon storage in Portland cement mortar. Using pressure chamber experiments, our findings show how carbonation efficiency increases with a decrease in the particle size. Approximately 6.4% and 8.2% (w/w) carbonations were achieved in the coarse-sand and fine-sand based mortar samples, respectively. For the hydration/curing time of 7 h, up to 12% carbonation was achieved. This reduced to 8.2% at 40 h curing period. On the pressure effect, for comparable curing conditions, 2 bar at 7 h carbonation time gives 1.4% yield, and 8.2% at 5 bar. Furthermore, analysing the effect of the carbonation time, under comparable conditions, shows that 4 h of carbonation time gives up to 8.2% yield while 64 h of carbonation gives up to 18.5%. It can be reliably inferred that, under similar conditions, carbonation efficiency increases with lower-sized particles or higher-surface areas, increases with carbonation time and higher pressure but decreases with hydration/curing time. Microstructural analyses with X-ray diffraction (XRD) and scanning electron microscopy (SEM) further show the visual disappearance of calcium-silicate-hydrate (C-S-H) together with the inhibition of ettringite formation by the presence of CO2 and CaCO3 formation during carbonation.
APA, Harvard, Vancouver, ISO, and other styles
3

Wu, Hao Ze, Jun Chang, Zheng Zhao Pan, and Xin Cheng. "Effects of Carbonation on Steel Slag Products." Advanced Materials Research 177 (December 2010): 485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.177.485.

Full text
Abstract:
The effects of carbonation on structure and properties of steel slag specimens are evaluated by some different testing technologys in this paper. The experimental results of strength and soundness show that the compressive strength of samples is improved 6-8 times due to carbonation, and carbonated specimens have qualified autoclave soundness. Also the carbonation reactions of steel slag and the reason that why strength and soundness improved are analyzed by chemical titration, XRD, TG, SEM and MIP etc. Experimental results indicate that in steel slag specimens, f-CaO, f-MgO, partial C2S and C3S minerals could be carbonated, and 105～110 gram CO2 gas could be sequestrated after carbonating per kilogram of steel slag specimens.
APA, Harvard, Vancouver, ISO, and other styles
4

Kruk, Aleksei, and Alexander Sokol. "Role of Volatiles in the Evolution of a Carbonatitic Melt in Peridotitic Mantle: Experimental Constraints at 6.3 GPa and 1200–1450 °C." Minerals 12, no. 4 (April 11, 2022): 466. http://dx.doi.org/10.3390/min12040466.

Full text
Abstract:
Reconstruction of the mechanisms of carbonatitic melt evolution is extremely important for understanding metasomatic processes at the base of the continental lithospheric mantle (CLM). We have studied the interaction between garnet lherzolite and a carbonatitic melt rich in molecular CO2 and H2O in experiments at 6.3 GPa and 1200–1450 °C. The interaction with garnet lherzolite and H2O-bearing carbonatite melt leads to wehrlitization of lherzolite, without its carbonation. Introduction of molecular CO2 and H2O initiates carbonation of olivine and clinopyroxene with the formation of orthopyroxene and magnesite. Partial carbonation leads to the formation of carbonate–silicate melts that are multiphase saturated with garnet harzburgite. Upon complete carbonation of olivine already at 1200 °C, melts with 27–31 wt% SiO2 and MgO/CaO ≈ 1 are formed. At 1350–1450 °C, the interaction leads to an increase in the melt fraction and the MgO/CaO ratio to 2–4 and a decrease in the SiO2 concentration. Thus, at conditions of a thermally undisturbed CLM base, molecular CO2 and H2O dissolved in metasomatic agents, due to local carbonation of peridotite, can provide the evolution of agent composition from carbonatitic to hydrous silicic, i.e., similar to the trends reconstructed for diamond-forming high density fluids (HDFs) and genetically related proto-kimberlite melts.
APA, Harvard, Vancouver, ISO, and other styles
5

Pelchat, Marcia L., Bruce Bryant, Rosario Cuomo, Francesco Di Salle, Ronnie Fass, and Paul Wise. "Carbonation." Nutrition Today 49, no. 6 (2014): 308–12. http://dx.doi.org/10.1097/nt.0000000000000010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Lee, Hyesung, Tae Wook Kim, Soung Hyoun Kim, Yu-Wei Lin, Chien-Tsung Li, YongMan Choi, and Changsik Choi. "Carbon Dioxide Capture and Product Characteristics Using Steel Slag in a Mineral Carbonation Plant." Processes 11, no. 6 (May 31, 2023): 1676. http://dx.doi.org/10.3390/pr11061676.

Full text
Abstract:
Carbon capture and storage (CCS) technology can reduce CO2 emissions by 85 to 95% for power plants and kilns with high CO2 emissions. Among CCS technologies, carbon dioxide capture using steel slag is a method of carbonating minerals by combining oxidized metals in the slag, such as CaO, MgO, and SiO2, with CO2. This study assessed the amount of CO2 captured and the sequestration efficiency in operating a mineral carbonation plant with a CO2 capture capacity of 5 tons/day by treating the exhaust gas from a municipal waste incinerator and identified the characteristics of the mineral carbonation products. As a result, the average concentration of CO2 in the inflow and outflow gas during the reaction time was 10.0% and 1.1%, respectively, and the average CO2 sequestration efficiency was 89.7%. This resulted in a conversion rate of CaO of > 90%. This study manifested that mineral carbonation products are more stable than steel slag as a construction material and are effective at sequestering CO2 by forming chemically stable CaCO3.
APA, Harvard, Vancouver, ISO, and other styles
7

He, Haijie, Yuxuan Wang, Ji Yuan, Ke Xu, Shifang Wang, Hongxia Qiao, Tao Wu, et al. "A New Type of Mineral Admixture and Its Impact on the Carbonation Resistance of EPS Concrete." Sustainability 15, no. 9 (April 26, 2023): 7233. http://dx.doi.org/10.3390/su15097233.

Full text
Abstract:
In this study, the effect of microbead dosages (0%, 5%, 10%, 15%, and 20%) on the carbonation resistance of expanded polystyrene (EPS) concrete was investigated. Five groups of EPS concrete specimens were produced and underwent rapid carbonation testing. The carbonation depth and strength after carbonation of the specimens were measured at different carbonation ages (7 days, 14 days, and 28 days) and analyzed to determine the effect of microbead dosages and compressive strength on carbonation resistance. Results indicated that the carbonation depth increased with the progression of carbonation time. The introduction of microbeads was found to significantly improve the carbonation resistance of EPS concrete, leading to a reduction in carbonation depth of over 50% after 28 days and an increase in strength after carbonation by 18–56%. A relative compressive strength model for EPS concrete after carbonation was developed, which could accurately characterize the growth of compressive strength. Based on the analysis of EPS concrete carbonation depth data, a prediction model for the carbonation depth of EPS concrete with microbead dosage was established through fitting, providing improved accuracy in predicting carbonation resistance. The microstructure of EPS concrete was also examined using scanning electron microscopy to uncover the underlying mechanisms of microbead enhancement on carbonation resistance. These findings have potential implications for future research and engineering applications in the carbonation resistance of EPS concrete.
APA, Harvard, Vancouver, ISO, and other styles
8

Guo, Qun, Lexin Jiang, Jianmin Wang, and Junzhe Liu. "Analysis of Carbonation Behavior of Cracked Concrete." Materials 15, no. 13 (June 27, 2022): 4518. http://dx.doi.org/10.3390/ma15134518.

Full text
Abstract:
The crack and carbonation of concrete pose a great challenge to its durability. Therefore, this paper studies the effect of cracks on the carbonation depth of cement paste under different factors. The relationship between carbonation and cracks was determined, and the carbonation mechanism of cement paste with cracks was clarified. The results show that a small water–binder ratio can effectively inhibit the carbonation process. The bidirectional carbonation enlarged the carbonation area around the crack. Within 21 days of the carbonation, the carbonation depth increased with carbonation time, and the Ca(OH)2 on the surface of the specimen was sufficient, allowing for a convenient chemical reaction with CO2. The influence of crack width on the carbonation process at the crack was greater than the influence of the crack depth. Carbonation influenced the hydration of cement-based materials, altering the types and quantities of hydration products. In conclusion, accurately predicting the regularity of carbonation in cracked structures is critical for improving the durability of concrete.
APA, Harvard, Vancouver, ISO, and other styles
9

Wang, Jia Bin, Di Tao Niu, Rui Ma, and Ze Long Mi. "Influence the Carbonation Resistance and Mechanical Properties of Shotcrete by Accelerated Carbonation Test." Advanced Materials Research 1065-1069 (December 2014): 1985–89. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1985.

Full text
Abstract:
In order to investigate the carbonation resistance of shotcrete and the mechanical properties after carbonation, the accelerated carbonation test was carried out. The results indicate that the carbonation resistance of shotcrete is superior to that of normal concrete. With the increasing of carbonation depth, compressive strength and splitting tensile strength of shotcrete grew rapidly. The admixing of steel fiber can further improve the carbonation resistance, reduce the carbonation rate, and increase the splitting tensile strength of shotcrete greatly. Besides, based on analyzing the effects of construction technology and steel fiber of concrete for the carbonation resistance, a carbonation depth model for shotcrete was established. Key words: shotcrete; carbonation; steel fiber; mechanical properties
APA, Harvard, Vancouver, ISO, and other styles
10

Cui, Dong, Xiaobao Zuo, Keren Zheng, and Sudip Talukdar. "Tomography-Based Investigation on the Carbonation Behavior through the Surface-Opening Cracks of Sliced Paste Specimen." Materials 13, no. 8 (April 11, 2020): 1804. http://dx.doi.org/10.3390/ma13081804.

Full text
Abstract:
Understanding the cracking behavior during carbonation is of high importance, and the cracks can serve as a shortcut for CO2 diffusion, which can further accelerate the carbonation process itself. In this study, a sliced paste sample was taken for an accelerated carbonation test, and the cracking behavior, as well as its impact on carbonation, was investigated through a novel extended attenuation method based on X-ray (XRAM) which is performed primarily on computed tomography (CT). Surface-opening cracks at different carbonation ages were rendered, based on which a full view on the carbonation-cracking behavior was built. The results reveal that the crack paths can rapidly be occupied by CO2, and that leads to the generation of V-shaped carbonation cusps pervading the carbonation fronts. The V-shaped carbonation cusps were mostly generated at the early carbonation age (within 14 days), attesting to a less intact sample surface as compared to the inside area. Moreover, this study confirms that the carbonated area would split into two independent zones with variant carbonation degree due to the increased humidity level near the sample surface. The current work reveals the interconnection between carbonation and cracking, and the results can be used for the designing of cement-based materials with better carbonation and cracking resistance.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Carbonation"

1

Barker, Gareth S. "Enhanced domestic carbonation." Thesis, Cranfield University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341133.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Berryman, Eleanor. "Carbonation of steel slag." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110434.

Full text
Abstract:
Iron and steel production is a rapidly growing industry with global outputs increasing 65% over the last ten years (World Steel Association, 2012). Unfortunately, it is also the largest industrial source of atmospheric CO2, accounting for a quarter of the CO2 emissions from industrial sources (International Energy Agency (IEA), 2007).Mineral carbonation provides a robust method for permanent sequestration of CO2 that is environmentally inert. Larnite (Ca2SiO4), the major constituent of steel slag, reacts readily with aqueous CO2 (Santos et al., 2009). Consequently, its carbonation offers an important opportunity to reduce CO2 emissions at source. A potential added benefit is that this treatment may render steel slag suitable for recycling. This study investigates the impact of temperature, fluid flux and reaction gradient on the dissolution and carbonation of steel slag, and is part of a larger study designed to determine the conditions under which conversion of larnite, and other calcium silicates, to calcite is optimized. Experiments were conducted on 2 – 3 mm diameter steel slag grains supplied by Tata Steel RD&T. A CO2-H2O mixture was pumped through a steel flow-through reactor containing these grains. For a given experiment, temperature was fixed at a value between 120°C and 200°C, pressure was 250 bar, and the fluid flux was fixed at 0.8 mL/cm2min or 6 mL/cm2min. Reactions were also carried out in a batch reactor at 180°C and 250 bar, corresponding to a condition of zero flux. The duration of experiments ranged from 3 to 7 days. The CO2-H2O fluid reacted with the steel slag grains to form phosphorus-bearing Ca-carbonate phases. At high fluid flux, 6 mL/cm2min, these phases dissolved at the edges of slag grains, leaving behind a porous rind of aluminum and iron oxides. Increasing temperature increased the rate of this reaction. At low fluid flux, 0.8 mL/cm2min, the extent of carbonation was increased. At the edge of grains, instead of being transformed to porous rinds, primary Ca minerals were replaced by phosphorus-bearing Ca-carbonate phases. As a result of the greater length of reactor used in these experiments, a reaction gradient was observed along which the fluid remained supersaturated with respect to the calcium carbonate, coating the surfaces of the slag grains. Steel slag exposed to the CO2-H2O fluid in the batch reactor was less carbonated; incongruent dissolution of the slag followed by surface coating of the grains by calcium carbonate inhibited further interaction of the slag with the fluid, limiting the extent of possible carbonation.The results of this study show that carbonation of steel slag by aqueous CO2 is feasible using relatively large grains, and that it can be optimised by varying fluid flux. Experiments of the type described above will contribute to the eventual global reduction of industrial CO2 emissions.
L'industrie du fer et de l'acier est en pleine croissance et sa production mondiale a augmenté de 65% au cours des dix dernières années (World Steel Association, 2012). Malheureusement, elle est également responsable d'un quart des émissions industrielles de CO2 ce qui en fait la plus importante source industrielle de CO2 atmosphérique (International Energy Agency (IEA), 2007).La carbonatation minérale fournit une méthode robuste pour la séquestration permanente du CO2 sous une forme écologiquement inerte. La larnite (Ca2SiO4), constituant principal des scories d'acier, réagit aisément avec le CO2 aqueux (Santos et al., 2009). Par conséquent, sa carbonatation offre une importante occasion de réduire à la source les émissions de CO2. Un avantage potentiel supplémentaire de ce traitement est de rendre les scories d'acier convenables pour le recyclage. Cette étude examine l'impact de la température, le flux molaire surfacique du fluide carbonaté, et d'un gradient de réaction sur la dissolution et la carbonatation des scories d'acier. Elle s'inscrit dans une étude plus large visant à déterminer les conditions optimisant la conversion de la larnite, et d'autres silicates de calcium, à la calcite.Des expériences ont été menées sur des grains de scories d'acier d'un diamètre de 2 à 3 mm fournis par Tata Steel RD&T. Un mélange de CO2-H2O a été pompé à travers un réacteur continu contenant ces grains et maintenu à une température entre 120°C et 200°C, une pression de 250 bar et à des flux molaires surfaciques de 0.8 à 6 mmol/cm2min. Chaque expérience a duré de 3 à 7 jours. Le fluide CO2-H2O a réagi avec les grains de scories d'acier et a formé des minéraux de carbonate de calcium contenant du phosphore. À flux molaire surfacique élevé, soit 6 mL/cm2min, ces phases sont dissoutes aux bords des grains, laissant place à une bordure poreuse d'oxydes d'aluminum et de fer. Une augmentation de la température a augmenté la vitesse de cette réaction. A valeur intermédaire de flux molaire surfacique, 0.8 mL/cm2min, le degré de carbonatation a augmenté. Au lieu laisser des bordures poreuses d'oxydes, les minéraux de calcium primaires en marge des grains ont plutôt été remplacés par des phases de calcium carbonate contenant du phosphore. En plus, l'usage d'un réacteur plus long a créé un gradient de réaction et maintenu la supersaturation du fluide relative au carbonate de calcium qui a enrobé les grains. Les scories d'acier exposées au fluide dans un réacteur discontinu (sans flux de fluide) ont été moins carbonatées; la dissolution non-congruente de la scorie a pris place suivie par l'enrobage des grains de scories par le carbonate, et ce dernier a réduit la surface de réaction de la scorie avec le fluide.Les résultats de cette étude démontrent que la carbonatation par le CO2 aqueux des scories d'acier à granulométrie relativement grossière est possible et qu'elle peut être optimisée en variant le flux molaire surfacique du fluide. Les expériences de ce type contribueront à la réduction éventuelle des émissions industrielles globales de CO2.
APA, Harvard, Vancouver, ISO, and other styles
3

Gunning, Peter John. "Accelerated carbonation of hazardous wastes." Thesis, University of Greenwich, 2011. http://gala.gre.ac.uk/7135/.

Full text
Abstract:
Accelerated carbonation involves exposing a material to a concentrated atmosphere of carbon dioxide, and can be used to treat hazardous wastes and soils and create new construction materials. The present work examines the use of accelerated carbonation to reduce the hazardous properties of wastes as a means of reducing the costs of disposal to landfill, and then develops the process to manufacture aggregate from the waste removing it from landfill disposal completely . A range of thermal wastes, including those from cement, metallurgical and paper processes, were found to be reactive with carbon dioxide. Many of these wastes are hazardous on account of their alkaline pH, which carbonation partially neutralizes, effectively allowing reclassification of the materials as stable non-reactive hazardous wastes under the Landfill Regulations. Cement and paper wastes were highly reactive with carbon dioxide, and were considered for use as cement substitutes to reconstitute non-reactive wastes into aggregate. Previous work had suggested that carbonation and pelletising were not compatible due to differing optimum conditions. This issue was investigated by considering the effects of the mix formulations and machinery parameters. The pelletising and carbonation processes require widely different moisture contents. The disparity is due to the need for total saturation of the material to form bonds between grains during pelletising, and an open pore network for carbon dioxide to penetrate. To achieve the two simultaneously, several methods were investigated. Chemical catalysts including sodium hypochlorite and sodium sulfite increased carbonation in a saturated material. However, curing the formed aggregates in carbon dioxide was found to be the most economic solution. A pilot scale process was developed based upon the laboratory results. A bespoke rotary carbonation reactor was developed to produce aggregate in bulk for commercial testing. Aggregate which was subjected to accelerated carbonation, has enhanced strength and durability compared to aggregate exposed to natural carbonation. The aggregate was successfully used to produce lightweight concrete with comparable strength to concrete made from commercial lightweight aggregate. Aggregate was also supplied for a research project to investigate the use of recycled materials as a horticultural growing medium.
APA, Harvard, Vancouver, ISO, and other styles
4

Rao, Arjun Shankar. "Carbonation of fluidized bed combustion solids." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27412.

Full text
Abstract:
Fluidized bed combustion (FBC) ash from the combustion of high-sulphur fuels with limestone addition can contain from 15 to 25% quick lime content. This excess calcium oxide gives the ash numerous undesirable properties such as strong exothermicity on wetting and high-pH leachate that must be treated before discharge. It also leads to the formation of ettringite with significant deleterious expansion in the landfill. In consequence, carbonation of FBC ash is desirable in order to reduce its alkalinity and improve its disposal characteristics. The current technique to reduce the exothermic character of the ash involves hydrating the ash in two stages, leading to the consumption of large quantities of water. Sonication along with simultaneous carbonation of the ash yields a product suitable for direct disposal in landfills with the minimum of water addition (to achieve the optimum proctor levels for maximum compaction of the ash in the landfill site). This work explores the use of sonochemical-enhanced carbonation of FBC ash. Tests have been conducted using four ashes, two of which differ in age only and are from the Nova Scotia Power 183 MWe CFBC (circulating fluidized bed combustor) boiler. The other two ashes are from the CFBC boilers at A/C power and Piney Creek, U.S.A. Tests with additives such as sodium chloride (at levels comparable with that in seawater) and seawater from Nova Scotia have also been carried out. Tests were carried out at low (20°, 40°C) and high (60°, 80°C) temperatures. Sonicated samples were also analyzed using TGA (Thermogravimetric analysis), TGA-FTIR (Thermogravimetric and Fourier transform infra red spectroscopy analysis) and XRD (X-ray diffraction) techniques to determine the influence of other calcium compounds (OCC). The size reduction brought about by sonication was quantified using wet sieving. The ash reactivity displays a strong temperature dependency with almost complete carbonation of the ashes being achieved in minutes at higher temperatures. Additives were found to increase the level of hydration of the ashes in line with previous work; however, carbonation levels were unaffected. TGA, TGA-FTIR and XRD analysis of the samples indicated that other calcium compounds (OCC) were also formed during hydration.
APA, Harvard, Vancouver, ISO, and other styles
5

Lange, Lisete Celina. "Carbonation of cement-solidified hazardous waste." Thesis, Queen Mary, University of London, 1996. http://qmro.qmul.ac.uk/xmlui/handle/123456789/25540.

Full text
Abstract:
Solidification technology can be an effective process for treating a variety of difficult to manage waste materials containing heavy metals prior to reuse or disposal. There are numerous commercial solidification techniques spanning a spectrum of technical complexity and cost. The most common methods include those based on cement or cement/pozzolanic materials. These materials, which are used in many solidification processes, make the technology appear simple and inexpensive. However, there are significant challenges to the successful application of this technique. The morphology and chemistry of the solidified waste forms are complex, specially when the waste streams used contain components other than the metals that are likely to be effectively immobilised. Also, the selection of the binder, depends upon an understanding of the chemistry of both the contaminants and the binder itself, to ensure efficient and reliable results. Nevertheless,a number of complex interactions are known to cause significant retardation on normal hydraulic reactions of cement-based materials, causing numerous and controversial problems. In recent years there has been renewed interest in elucidating the binding mechanisms responsible for the fixation of waste species. Carbonation, which is known to affect a wide range of cementitious materials, is a phenomenon observed by many scientists and has received very little attention. The aim of this work has been to investigate the effects of natural and accelerated carbonation on the development of mechanical and microstructural properties of solidified products as well as on the binding of metallic waste components. Particular emphasis was paid to examine the influence of different binders on the properties of carbonated solidified waste forms. The kinetics of the carbonation reaction was thoroughly examined, particularly when mix parameters such as binder/waste type and water content were varied. An examination of the resulting products showed that carbonated solidified waste materials had improved mechanical properties and increased metal binding capacity, when compared to specimens cured in nitrogen or normal atmospheric conditions. Microstructural analysis showed that large amounts of calcite where characteristics of carbonated samples. The increased formation of calcite as a result of carbonation appeared to be directly linked with the development of strength and enhanced metals fixation. NMR and FTIR spectroscopy indicated that carbonation has a significant influence on the hydration of waste forms by increasing the degree of polymerisation of the silicate hydration phases, with a consequent acceleration of the hydration of the cement paste. Examination by SEM analysis confirmed an acceleration of C3S hydration, typified by a de-calcified hydration rims and a matrix of dense calcite intergrowth infilling porosity. Some metals appeared to be incorporated in the silica-rich rims and others in the calcite rich matrix, suggesting precipitation of metal as both carbonates, silicates and complex double-salts. An examination of the kinetic of the carbonation reaction revealed that the reactivity of the different cements was different in the presence of carbon dioxide, and that when metal wastes were added the susceptibility of the paste to react with carbon dioxide increased. In general the results of this work indicate the potential of carbon dioxide for incorporation into the treatment of wastes during solidification. However, further work is necessary to establish the long-term performance of these carbonated waste forms as well as the behaviour of carbon dioxide upon different waste streams.
APA, Harvard, Vancouver, ISO, and other styles
6

Araizi, Paris-Kavalan. "Accelerated carbonation of wastes and minerals." Thesis, University of Greenwich, 2015. http://gala.gre.ac.uk/21536/.

Full text
Abstract:
Accelerated carbonation technology (ACT) could be used for the stabilisation of hazardous wastes, remediation of contaminated soils and re-use/recycling of various waste streams. ACT has also potential for storing anthropogenic CO2 emissions into mineral silicates and alkaline waste residues via mineral or waste carbonation. Compared to ocean and geological storage, mineral and waste carbonation offer several advantages such as long-term storage and low monitoring requirements. Currently, the biggest challenge of mineral carbonation is the low conversion rate of calcium and magnesium-based minerals into thermodynamically stable carbonates under ambient temperature and pressure. Also, literature offers little information about physical techniques or chemical substances that could enhance the efficacy of accelerated carbonation of alkaline wastes. In this study, various carbonation techniques were applied for increasing the carbonation reactivity of magnesium hydroxide. The experiments were conducted under low temperature and pressure, while the maximum reaction time was 24 hours. Under these conditions the associated costs are kept to a minimum. The possibility of producing monolithic products with value-added was investigated by using blended mixtures of magnesium and calcium hydroxide. These mixtures were cured in carbon dioxide for 7 and 28 days and their physical properties were measured and compared with the properties for normal and lightweight concrete. Moreover, several alkaline residues were carbonated with the aid of ultrasound and four candidate catalysts (acetic acid, ethanol, sodium hypochlorite and sodium nitrite) and their CO2 uptake was measured. During sonication the variables: ultrasonic frequency, water content and treatment time were examined, while the applied chemicals were added at three different molarities (0.1 M, 0.5M and 2.5M). Throughout this work a number of analytical techniques were used for the characterisation of the raw and carbonated materials. These techniques included XRay fluorescence, X-ray diffraction, wet laser analysis, total organic carbon analysis and scanning electron microscopy. The results showed that the CO2-reactivity of Mg(OH)2 was low due to thermodynamic constraints that inhibited the rapid diffusion of CO2 into the system. The mixtures composed of pure Mg showed improved compressive strength and bulk density. In addition, sonication at low water content was weak, as there was lack of enough water to facilitate cavitation. On the other hand, at high water content the achieved CO2 uptake of the products increased by up to four times, as the wet conditions enhanced the cavitation of the solid particles. Finally, it was found that ethanol and acetic acid promoted the hydration rate of CO2 during accelerated carbonation, while minerals phase analysis did not reveal the formation of toxic by-products. In conclusion, the findings of this study proved that sonication depends highly on water content and is favoured at wet conditions. Furthermore, acetic acid and ethanol are two chemicals with potential to ameliorate the accelerated carbonation of various industrial wastes without the formation of un-desired or toxic compounds.
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Xiaomin. "Accelerated carbonation of municipal solid waste incineration residues." Thesis, University of Greenwich, 2008. http://gala.gre.ac.uk/8399/.

Full text
Abstract:
Incineration can reduce the mass and volume of municipal waste significantly but produces solid waste in the form of bottom ash and air pollution control (APC) residues. Landfill is currently the most commonly used disposal option for these ash residues, however, the impact of hazardous compounds in these wastes on the environment during landfilling is becoming more widely appreciated and cheaper, alternative, management options need to be explored. In this research, the treatment of these municipal solid waste incinerator (MSWI) residues by accelerated carbonation is investigated and compared with naturally aged ashes. Both bottom ash and APC residues were carbonated in an atmosphere composed of gaseous CO2. It was found that the carbonation of calcium oxides/hydroxides resulted in the rapid formation of calcium carbonate and that silicate compounds were hydrated. The reduction of pH from 12-12.5 to 7-9 observed upon carbonation was associated with a reduction in availability of soluble salts and meals. Carbonated ash had a higher buffering capacity to acid attack when compared to the untreated, non-carbonated, ash. The bottom and APC ashes sequestrated between 6% and 13% CO2 (w/w dry weight), respectively upon carbonation; and this may be important where the reduction of greenhouse emissions to the atmosphere is concerned.
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Shuangxin. "Carbonation of 20-year-old blended cement pastes." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589003.

Full text
Abstract:
This PhD study aims to understand the carbonation mechanism of slag-rich waste forms and consequently benefits assessing the long term efficiency of immobilising waste materials with cementitious disposals. Three phases of experiments had been managed to achieve the aim. The first was an examination of three 20-year-old alkali-activated neat slag pastes. This section supplied the information about the immobilisation mechanism of alkaline metal cations within a cement system. The second was a characterisation of four 20-year-old water- activated slag-bearing pastes with curing at 40°C for the initial five years. This part concerned the effects of aging and heating treatment in cement hydration. The third was the accelerated and gentle testing of the water-activated pastes. The carbonation mechanism was mainly drawn by the micro-structural and nano- structural features of carbonated pastes and comparison to those of hydrated pastes. The obtained experimental data for the alkali-activated pastes confirmed the outstanding suitability of slag for fixing metal cations. It was because the formed C- S-H gel had been verified to be entirely tobermorite-based and possess a high substitution degree of bridging Si tetrahedra by Al tetrahedra. Meanwhile, the main fixation mechanism has been proved to be the incorporation of metal cations into the structure of the C-S-H through balancing the charges caused by the substitution. Thus, the significant incorporation of Ae+ within the structure of the C-S-H could be advantageous of immobilising alkaline cations through charge-balancing. The collapse of the C-S-H structure during carbonation has been observed due to not only decalcification, but also dealumination. Thus, according to the above findings, the carbonation is very likely to negatively affect the fixation of waste materials within cement systems. It was because, along with the extraction of the bridging Al tetrahedra, the charge-balancing cations were not needed and possibly would eventually be released. A conceptual model of carbonation occurring in hardened cement pastes has been proposed at the end of the chapter conclusion. More findings about the efficiency of different activators on hydration and the effects of curing temperature and aging on hydration have been discussed in details in the following chapters.
APA, Harvard, Vancouver, ISO, and other styles
9

Pesce, Gianluca. "Study of carbonation in novel lime based materials." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629662.

Full text
Abstract:
This research advances the current understanding of the carbonation reaction in porous materials by investigating pH changes during the hardening process of lime, the role of pore-water in the dissolution process of calcium hydroxide and the effects of pore size on precipitation of calcium carbonate solid phases. To achieve this, carbonation is studied within a thin film of an aqueous solution of calcium hydroxide, that simulates the conditions existing in porous media once most of the liquid water has evaporated. The research introduces novel approaches such as the use of specially manufactured micro-electrodes used to measure pH variations during the carbonation process. The effect of pore size on the solid phases precipitated by carbonation is investigated using a novel lime based material called nano-lime. Influence of pore-water on the hardening process of lime is studied in formulated lime using impedance spectroscopy: an electrochemical technique which is new in the study of lime based materials. Overall, results demonstrate that the micro-electrodes can operate reliably in very alkaline environments such as those produced by the dissolution of lime. Their potentiometric response, in fact, was found to be Nernstian up to pH 14. Furthermore, the electrode response proved to be sufficiently sensitive and reproducible to differentiate, on the basis of pH, between the formation of calcite and vaterite. It is likely that these micro-electrodes are currently the only analytical tools capable of monitoring high pHs in confined places and, for this reason, they can be considered highly valuable for the study of chemical processes involving very alkaline waters. The study on the role of pore-water in the hardening process of formulated lime has, instead, demonstrated the potential of impedance spectroscopy as a non-destructive technique for real time in situ monitoring of the reaction between lime and hydraulic additives.
APA, Harvard, Vancouver, ISO, and other styles
10

Gopinath, Rakesh. "Concrete carbonation prediction for varying environmental exposure conditions." Doctoral thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/32700.

Full text
Abstract:
The Durability Index (DI) approach has been developed in South Africa, in order to improve the durability performance of reinforced concrete structures. The DI approach is based on durability index tests, which are linked to transport mechanisms related to particular deterioration processes (Alexander et al., 1999a). Carbonation of concrete is governed, inter alia, by the microstructure and the transport characteristics of the concrete. A carbonation model with permeability coefficient (k) from the Oxygen Permeability Index (OPI) test as the key material variable was developed by Salvoldi (2010) using accelerated carbonation test data. The main aim of this research is to further develop the carbonation model by adopting the modelling framework of Salvoldi (2010) using natural carbonation data. For the experimental work, a total 48 different concrete mixes were produced by with different water: binder ratios (w/b), cement types, cement extender (addition) type and curing regime. The OPI test was conducted on all the concretes, and their corresponding permeability coefficients were determined. A set of 48 concrete specimens were exposed to five different sites for natural carbonation, and carbonation depths were measured periodically. Based on the modelling framework of Salvoldi (2010) and using the natural carbonation data between 150- 850 days, a model predicting the depth of natural carbonation was developed. However, in the case of concrete exposed to rain, drying/wetting is a major factor influencing the rate of carbonation. Therefore, the carbonation model was further modified taking into account the influence of drying/wetting cycles, by coupling it with a moisture model. For the development of the moisture model, the concrete specimens were exposed to a laboratory environment maintained at constant temperature and relative humidity (RH). The internal RH of the concrete specimens at varying depth was measured at different time intervals. Based on the measured RH data, the moisture model was also developed with ‘k' from the OPI test as the key input parameter. The moisture model was then coupled with the carbonation model developed. This provides an integrated and powerful solution for predicting carbonation of concrete both sheltered and exposed to rain by using only one main material input parameter ‘k', which is one of the major contributions of this research.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Carbonation"

1

Carbonation of reinforced concrete. Dublin: Citis, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Dunster, A. M. Accelerated carbonation testing of concrete. Watford: Building Research Establishment, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Yarmolinsky, David. Mechanisms for Taste Sensation of Carbonation. [New York, N.Y.?]: [publisher not identified], 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gibson, Brian Robert. The carbonation of structural quality concrete. [London]: Queen Mary College, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Richardson, Mark G. Carbonation of cementious systems: A bibliography. Dublin: University College Dublin. Department of Civil Engineering, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Falk, Elisabeth. Carbonation of Peridotite in The Oman Ophiolite. [New York, N.Y.?]: [publisher not identified], 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Canada Mortgage and Housing Corporation., ed. Extent of carbonation in buildings in Toronto. [Ottawa]: CMHC, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Peter, Halsall, Soroczan Cate, Canada Mortgage and Housing Corporation. Research Division., and Robert Halsall and Associates, eds. Anti-carbonation coatings for use on Canadian buildings. Ottawa: CMHC, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Richardson, Mark G. Carbonation of reinforced concrete: Its causes and management. Dublin: Citis, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Canada Mortgage and Housing Corporation. Research Division. and Halsall Associates Limited, eds. Anti-carbonation coatings for use on Canadian buildings. Ottawa: The Division, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Carbonation"

1

Albarède, Francis. "Carbonation." In Encyclopedia of Astrobiology, 377. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_236.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Albarede, Francis. "Carbonation." In Encyclopedia of Astrobiology, 249. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_236.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Albarede, Francis. "Carbonation." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_236-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Richardson, Mark G. "Carbonation." In Fundamentals of Durable Reinforced Concrete, 147–84. 2nd ed. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003261414-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Albarède, Francis. "Carbonation." In Encyclopedia of Astrobiology, 483. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_236.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Mosher, Michael, and Kenneth Trantham. "Maturation and Carbonation." In Brewing Science: A Multidisciplinary Approach, 327–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73419-0_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Tapas, M. J., A. Yan, P. Thomas, C. Holt, and V. Sirivivatnanon. "Effect of Carbonation on the Microstructure and Phase Development of High-Slag Binders." In Lecture Notes in Civil Engineering, 213–21. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_22.

Full text
Abstract:
AbstractThe drive for sustainable concrete production favors the use of high replacement levels of supplementary cementitious materials (SCMs) in the concrete mix. The use of SCMs such as fly ash and slag, however, although they improve the sustainability of concrete production as well as most concrete durability properties, increases the carbonation rate. Carbonation decreases the pH of the concrete pore solution, making the steel reinforcement susceptible to corrosion. The effect of carbonation is, however, not confined to the change in pH of the pore solution. We investigated changes in the microstructure and phases of high-slag binders due to carbonation. The carbonation resistance of mortars with 50 and 70% slag replacement were investigated at exposure conditions of 2%CO2, 50%RH, 23 °C. The carbonated and non-carbonated parts of the mortars were subjected to various characterization techniques to investigate the effect of carbonation on microstructure and phase development. Results confirmed the absence of portlandite in all the carbonated regions (“colorless” by phenolphthalein test, which indicated that the change in color of the phenolphthalein solution was due to the absence of portlandite to buffer the pH). Significant reduction in the amount of C-S-H, as well as increase in the amount of calcium carbonate, were been observed in the carbonated regions. Aragonite, a polymorph of CaCO3, was very prominent in all the carbonated mortars.
APA, Harvard, Vancouver, ISO, and other styles
8

Mehdizadeh, B., K. Vessalas, B. Ben, A. Castel, S. Deilami, and H. Asadi. "Advances in Characterization of Carbonation Behavior in Slag-Based Concrete Using Nanotomography." In Lecture Notes in Civil Engineering, 297–308. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_30.

Full text
Abstract:
AbstractExposure of concrete to the atmosphere causes absorption of CO2 and carbonation via a chemical reaction between the CO2 and calcium hydroxide and calcium-silicate-hydrate reaction products inside the concrete. A greater understanding of carbonation behavior and its micro- and nanoscale impacts is needed to predict and model concrete durability, cracking potential and steel depassivation behaviors. New and sophisticated techniques have emerged to analyze the microstructural behavior of concrete subjected to carbonation. High-resolution full-field X-ray imaging is providing new insights to nanoscale behavior. Full-field nano-images provide significant insight into 3D structural identification and mapping. Nanotomographic modeling of an accelerated carbonated test specimen can also provide a 3D view of the pore structure that resides inside slag-based concrete. This is critical for better understanding of the capillary porosity and pore solution behaviors of concrete in situ. We investigated the analysis of durability properties, including the carbonation behavior of slag-based concrete, by evaluating microstructural and nanotomographic identification techniques.
APA, Harvard, Vancouver, ISO, and other styles
9

Iwama, K., T. Nagayasu, K. Maekawa, and K. Higuchi. "Modeling of carbonation, de-carbonation and re-carbonation processes of structural concrete subjected to high temperature." In Computational Modelling of Concrete and Concrete Structures, 582–89. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003316404-68.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Chiang, Pen-Chi, and Shu-Yuan Pan. "Utilization of Carbonation Products." In Carbon Dioxide Mineralization and Utilization, 277–92. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3268-4_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Carbonation"

1

Sivalingam, Senthoorselvan, Stephan Gleis, Hartmut Spliethoff, Craig Hawthorne, Alexander Charitos, and Guenter Scheffknecht. "Analysis and Comparison of Reactivity and CO2 Capture Capacity of Fresh Calcium-Based Sorbents and Samples From a Lab-Scale Dual Fluidized Bed Calcium Looping Facility." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22192.

Full text
Abstract:
Naturally occurring limestone and samples from a lab scale dual fluidized bed (DFB) calcium looping (CaL) test facility were analysed in a thermo gravimetric analyser (TGA). The reactivity of the samples evaluated at typical carbonation conditions prevailed in the carbonator was compared with raw samples. Carbonations were carried out at 600, 650 &700°C and 5, 10 &15 vol-% CO2 atmosphere using a custom designed sample holder that provided ideal conditions for solid gas contact in a TGA. The rate of carbonation and carbonation capacity of the samples were compared with respect to the following three categories: number of calcination-carbonation cycles, carbonation temperature and CO2 concentration. Notable differences in total conversion (XCaO) and the rates of conversions were observed between the raw and DFB samples in all three cases. It is suspected the much lower activity of the DFB sample is attributed to the differences in experimental conditions: ie., partial carbonation of the DFB particles, fast heating rate in the calciner and thus a rapid calcination reaction, and particle attrition in the CFB calciner riser. These harsh conditions lead sintering and thus a loss of surface area and reactivity. Sintered DFB samples showed low (nearly 1/3 of the raw samples) but stable conversions with increasing number of cycles. The sorbent taken from the DFB facility did not decrease with respect to carbonation rate or maximum conversion over 4 cycles whereas the fresh limestone changed significantly over 4 cycles. Hydration was used as an attempt to regenerate the lost capture capacity of partially carbonated DFB sample. Hydration of the sintered DFB sample was successful in increasing the maximum capture capacity in the fast reaction regime to values almost as high as that of a fresh sample in its first carbonation cycle. Although more investigation is required to investigate the effect of hydration on the CaO particle morphology, a process modification to enhance the CO2 capture efficiency of the carbonator via particle hydration was proposed.
APA, Harvard, Vancouver, ISO, and other styles
2

"Natural Carbonation Of Concrete." In SP-305: Durability and Sustainability of Concrete Structures. American Concrete Institute, 2015. http://dx.doi.org/10.14359/51688562.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Faleschini, Flora, Mariano Angelo Zanini, and Lorenzo Hofer. "Reliability analysis of carbonation for recycled aggregate concretes." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.1346.

Full text
Abstract:
<p>Durability represents a crucial issue in the evaluation of safety and serviceability for reinforced concrete structures. Carbonation-induced corrosion is a complex process, which involves several phenomena with different nature at the micro-scale level. Many studies have already focused on carbonation-induced corrosion of natural aggregate concrete (NAC), leading to several prediction models to estimate carbonation depth. Less research is devoted instead on recycled aggregate concrete (RAC), about which limited experimental works analyzed carbonation coefficient in accelerated tests. This work presents a reliability-based analysis of carbonation resistance of RACs, applied on experimental carbonation coefficients derived from literature, and on the full probabilistic method prosed in fib Bulletin 34.</p>
APA, Harvard, Vancouver, ISO, and other styles
4

"Mechanism of Carbonation of Mortars and the Dependence of Carbonation on Pore Structure." In SP-100: Concrete Durability: Proceedings of Katharine and Bryant Mather International Symposium. American Concrete Institute, 1987. http://dx.doi.org/10.14359/3838.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Irina, V. Shadrunova, and V. Kolodezhnaya Ekaterina. "Modern trends in waste recycling technologies of incinerators." In Challenges of Science. Institute of Metallurgy and Ore Beneficiation, 2023. http://dx.doi.org/10.31643/2023.12.

Full text
Abstract:
In 2021, the Government of the Russian Federation set the executive authorities the task of decarbonizing Russian industry and developing an action plan for the transition to carbon regulation and sequestration of carbon dioxide emissions. One of the directions of carbon dioxide sequestration is mineral carbonation. The idea of the work is to use mineral carbonation, as an alternative to natural mineral raw materials, slags from the combustion of solid non-combustible waste. The technology of carbon sequestration by mineral carbonation of technogenic raw materials is at the research stage, therefore it is necessary to assess the potential of using waste incinerators. To solve the tasks, the material composition of the slags of one of the incinerators was studied in detail. The possibility of slag enrichment with the production of copper-containing preconcentrate has been established. The content of minerals capable of participating in carbonation was determined, and the carbonation potential was estimated based on the calculated values. The requirements for man-made waste for their use as raw materials for carbonation are formulated. The factors that have a restraining effect on the introduction of mineral carbonation technologies are highlighted.
APA, Harvard, Vancouver, ISO, and other styles
6

YU, Zhenwei, Kunjie CHEN, Zhao LI, and Wang YU. "Experimental Study on Carbonation Treatment." In International Conference on Biological Engineering and Pharmacy 2016 (BEP 2016). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/bep-16.2017.37.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"Carbonation of Fly Ash Concrete." In SP-192: 2000 Canmet/ACI Conference on Durability of Concrete. American Concrete Institute, 2000. http://dx.doi.org/10.14359/5770.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Húlek, Lukáš, Michal Bačuvčík, Ivan Janotka, Jakub Gašpárek, and Peter Paulík. "Cement-Based Coating as Concrete Anti-Carbonation Barrier." In Non-Traditional Cement and Concrete 2023 conference. Switzerland: Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-69mmrs.

Full text
Abstract:
During the research study focused on 100-year-old concrete bridges, a couple of them were found with a very low carbonation depth under an ordinary cement-based protective render coat (PRC). Phenolphthalein test showed at this place carbonation depth up to 2 mm. Bridge concrete was carbonated up to 80 mm, when a PRC spalled up. Close correlation between the surface permeability of a PRC estimated by the Torrent method and the carbonation depth of the base concrete beneath it, was observed. Most of the PRCs appeared to be almost impermeable showing the coefficient of permeability below 0.01 × 10-16 m2. The field experiments were replaced by those of laboratory-made aiming to a PRC development from currently available materials. For this purpose, material composition and rheological optimization of the PRCs were suggested and relevant tests performed. The PRCs applied to a surface of concrete panel were tested for permeability (Torrent method), adhesion (target) and crack propagation. The resistance to carbonation of the plain concrete C8/10 strength class according to EN 206 + A2 and those of PRC-protected were verified by an accelerated carbonation in 20 °C/60 % R.H./20 % vol. CO2-exposure. By contrast, dry-air cure served as a reference cure. This article is mainly focused on the laboratory tests evaluation and explanation of the observed low carbonation of the base concrete covered by a PRC.
APA, Harvard, Vancouver, ISO, and other styles
9

Andrade, C. "Carbonation Effect on the Chloride Profile." In XV International Conference on Durability of Building Materials and Components. CIMNE, 2020. http://dx.doi.org/10.23967/dbmc.2020.232.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Evans, Jonathan D., and Andrea Fernández. "Sharp-interface models for concrete carbonation." In NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2012: International Conference of Numerical Analysis and Applied Mathematics. AIP, 2012. http://dx.doi.org/10.1063/1.4756268.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Carbonation"

1

Michael J. McKelvy, Andrew V. G. Chizmeshya, Kyle Squires, Ray W. Carpenter, and Hamdallah Bearat. A Novel Approach To Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost. Office of Scientific and Technical Information (OSTI), June 2006. http://dx.doi.org/10.2172/895921.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Andrew V. G. Chizmeshya, Michael J. McKelvy, Kyle Squires, Ray W. Carpenter, and Hamdallah Bearat. A Novel Approach to Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost. Office of Scientific and Technical Information (OSTI), June 2007. http://dx.doi.org/10.2172/924162.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Michael J. McKelvy, Andrew V.G. Chizmeshya, Kyle Squires, Ray W. Carpenter, and Hamadallah Bearat. A NOVEL APPROACH TO MINERAL CARBONATION: ENHANCING CARBONATION WHILE AVOIDING MINERAL PRETREATMENT PROCESS COST. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/860811.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Clarens, Andres, and Catherine Peters. Targeted Mineral Carbonation to Enhance Wellbore Integrity. Office of Scientific and Technical Information (OSTI), September 2019. http://dx.doi.org/10.2172/1760338.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Michael G. Nelson. CARBON DIOXIDE SEQUESTRATION BY MECHANOCHEMICAL CARBONATION OF MINERAL SILICATES. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/826304.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Peters, Catherine, and Andres Clarens. Targeted Mineral Carbonation to Enhance Wellbore Integrity (Final Report). Office of Scientific and Technical Information (OSTI), September 2019. http://dx.doi.org/10.2172/1755100.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rapp, D. M. Carbonation as a binding mechanism for coal/calcium hydroxide pellets. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/5878050.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rittmann, Bruce, Justin Flory, Everett Eustance, Yen-Jung Lai, Michelle Young, Rosa Krajmalnik-Brown, John McGowen, Robert Stirling, and Jason Quinn. Membrane Carbonation for 100% Efficient Delivery of Industrial CO2 Gases. Office of Scientific and Technical Information (OSTI), October 2022. http://dx.doi.org/10.2172/1895136.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ellis, BRIAN. STORING CO2 IN BUILT INFRASTRUCTURE: CO2 CARBONATION OF PRECAST CONCRETE PRODUCTS. Office of Scientific and Technical Information (OSTI), January 2023. http://dx.doi.org/10.2172/1910586.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Templeton, Alexis S. Defining Fe and H Speciation During Olivine Carbonation Under Highly Reducing Conditions. Office of Scientific and Technical Information (OSTI), October 2017. http://dx.doi.org/10.2172/1485305.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Carbonation' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography