Relevant bibliographies by topics / Nontraditional and Natural Pozzolans

Academic literature on the topic 'Nontraditional and Natural Pozzolans'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Nontraditional and Natural Pozzolans"

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Tokpatayeva, R., A. Castillo, J. Yoon, G. Kaladharan, K. Jafari, R. M. Arachchige, F. Rajabipour, S. Peethamparan, and J. Olek. "Comparative Study of the Reactivity and Performance of Different Nontraditional and Natural Pozzolans in Cementitious System." Advances in Civil Engineering Materials 11, no. 2 (October 5, 2022): 20220021. http://dx.doi.org/10.1520/acem20220021.

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Sierra, Oscar M., Jordi Payá, José Monzó, María V. Borrachero, Lourdes Soriano, and Javier Quiñonez. "Characterization and Reactivity of Natural Pozzolans from Guatemala." Applied Sciences 12, no. 21 (November 3, 2022): 11145. http://dx.doi.org/10.3390/app122111145.

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The possibility of using pozzolanic materials as a partial substitute for Portland cement (PC) to develop mortars and concretes promotes environmental and economic benefits. The present paper includes an in-depth investigation into the characterization of natural pozzolans from Guatemala for the valorization of these materials. An exhaustive physico-chemical characterization of the starting materials was first carried out. Second, an analysis of the pozzolanic reactivity of both pozzolans was performed using an evolution test of the pH and electrical conductivity measurements and a Frattini test. Finally, pastes and mortars were manufactured with pozzolans T and R as a substitute for PC. The results of the pH and electrical conductivity measurements confirmed that natural pozzolans can be classified as low-reactivity. The Frattini test and the thermogravimetric analysis confirmed the pozzolanic behavior of natural pozzolans at 28 curing days. In the cement pastes, lime fixation was positive for a long curing period, which demonstrated that these pozzolans had medium–long-term pozzolanic activity, similar to fly ash (FA). The results were confirmed by mechanical assays. The mortars with 15%, 25%, and 35% substitutions of cement for pozzolans had strength gain percentages of around 13–15% at 90 curing days.
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Shi, Caijun. "An overview on the activation of reactivity of natural pozzolans." Canadian Journal of Civil Engineering 28, no. 5 (October 1, 2001): 778–86. http://dx.doi.org/10.1139/l01-041.

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Natural pozzolan is one of the oldest construction materials. Lime-pozzolan cements have been used for several thousands of years and have an excellent reputation for their durability. Pozzolans are being widely used as a cement replacement in Portland cement concrete. The use of pozzolans has the advantage of lower costs and better durability, but the disadvantage of a longer setting time and a slower early strength development. Different techniques have been tried to increase the reactivity of natural pozzolans to overcome these disadvantages. This paper has reviewed various methods used to activate the pozzolanic activity of natural pozzolans. All activation methods can be classified into three catalogues: thermal, mechanical, and chemical activation. A comparison based on strength–cost relationship indicates that the chemical activation method is the most effective and cheapest one.Key words: activation, reactivity, natural pozzolans, pozzolanic reaction, calcination, elevated temperature curing, chemical activators, strength, cost.
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Pourkhorshidi, A. R., J. Sobhani, and A. A. Ramezanianpour. "A geochemical assessment method for identification of natural pozzolans as supplementary cementitious material." Advances in Cement Research 33, no. 12 (December 2021): 550–60. http://dx.doi.org/10.1680/jadcr.21.00078.

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Pozzolans are available in natural resources as raw materials that are potentially applicable in the cement and concrete industries. Proper identification and exploration methods are crucial in relation to their technical and economical purposes. In this paper, a two-phase study is employed, based on geochemical data processing and experimental investigations. Chemical and petrography of natural pozzolans were utilised to develop the proposed method. This method proposes three geochemical indexes: the limiting values of silica/calcium oxide (SiO2/CaO), alumina saturation and alkali content to qualify the natural pozzolan according to the supplementary cementitious requirements. Then, based on ASTM C618 and EN 196-5 standards and complementary tests, the chemical and physical properties of two natural pozzolans were assessed to validate the proposed method. The results showed that this method could be used as a robust and direct way to identify natural pozzolans.
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Elmahdoubi, Fadoua, Safaa Mabroum, Rachid Hakkou, and Mounsif Ibnoussina. "Geopolymer Materials Based on Natural Pozzolans from the Moroccan Middle Atlas." Minerals 11, no. 12 (November 30, 2021): 1344. http://dx.doi.org/10.3390/min11121344.

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The pozzolans of the Moroccan Middle Atlas are derived from a low explosive volcanism, mostly strombolian. They are mainly composed of olivine and pyroxene, presenting a less homogeneous structure (irregular vesicles). The main target of this project is to study the use of natural pozzolans (NP) and metakaolin as precursors for the production of geopolymeric binders. The characterization of raw materials and elaborated geopolymers was carried out to study their mineralogical, chemical, microstructural, and mechanical properties. The studied pozzolans and kaolin were crushed, grinded, and sifted to get a fine grain size diameter of less than 100 µm. Then, they were calcined at 750 °C for 2 h to achieve an amorphous structure, increasing of their reactivity. Geopolymer production consists of mixing pozzolans and metakaolin with different amounts with an alkaline solution of sodium hydroxide and sodium silicates. The mass proportion of metakaolin (MK) used in this study was 10%, 20%, and 30%. In the present work, the amount of metakaolin was added as a source of alumina. The elaborated geopolymers were characterized using XRD, FTIR, TGA, and SEM analyses. The compressive strength was measured at 7, 14, and 28 days. The results showed interesting mechanical proprieties at about 18 MPa at 28 days with the mixture containing 20% MK. The addition of MK showed a significant increase in mechanical properties of the elaborated geopolymer. Meanwhile, the other results confirmed the training of new phases in addition to N-A-S-H gel. All these results indicate that the use of pozzolans in the production of geopolymers could be a great solution for the sustainable management of this mineral resource.
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Shukla, Ashish, Nakul Gupta, Ankur Gupta, Rajesh Goel, and Sanjeev Kumar. "Natural Pozzolans a Comparative Study: A Review." IOP Conference Series: Materials Science and Engineering 804 (June 17, 2020): 012040. http://dx.doi.org/10.1088/1757-899x/804/1/012040.

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Santana, Juan J., Natalia Rodríguez-Brito, Concepción Blanco-Peñalver, Vicente F. Mena, and Ricardo M. Souto. "Durability of Reinforced Concrete with Additions of Natural Pozzolans of Volcanic Origin." Materials 15, no. 23 (November 24, 2022): 8352. http://dx.doi.org/10.3390/ma15238352.

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In this work, the properties of concrete modified with dosages of natural pozzolans (NP) in substitution of cement or superfine aggregates were evaluated. Proportions of 20/80 pozzolan/cement or pozzolan/superfine aggregates were selected for the additions of quarry and tuff pozzolans. Pozzolanic activity, durability, compressive strength, characteristic resistance, settling consistency, density, electrical resistivity, depth of water penetration, accessible porosity, and carbonation and chloride penetration were determined for the resulting concrete mixtures, and they were subsequently compared to the values obtained for the reference concrete batches without additions. The results of the cementitious mixtures supplemented with tuff (PZT) and quarry (PZQ) pozzolans, expressed in mmol/L, are consistent with the pozzolanism test, with [Ca(OH)2]/[OH−] ratios at 7 days are 6.03/60.19 for PZQ and 1.78/92.78 PZT. In addition to the pozzolanic activity at these dosages, the characteristic resistance and durability parameters required by EHE-08 were verified. Particular attention was given to the determination of the diffusion of chloride ions, introducing an instrumental modification of the accelerated integral method. The modification provides values of diffusion coefficients similar to those obtained by the other methods with the advantage of greater stability and quality of the measurement.
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Espinoza-Hijazin, Gaston, Álvaro Paul, and Mauricio Lopez. "Concrete Containing Natural Pozzolans: New Challenges for Internal Curing." Journal of Materials in Civil Engineering 24, no. 8 (August 2012): 981–88. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0000421.

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Bahadori, Hadi, Araz Hasheminezhad, and Farshad Taghizadeh. "Experimental Study on Marl Soil Stabilization Using Natural Pozzolans." Journal of Materials in Civil Engineering 31, no. 2 (February 2019): 04018363. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0002577.

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Hooton, RD, GS Barger, ER Hansen, MR Wood, T. Neary, DJ Beech, and D. Jaquier. "Production and Use of Calcined Natural Pozzolans in Concrete." Cement, Concrete and Aggregates 23, no. 2 (2001): 73. http://dx.doi.org/10.1520/cca10478j.

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Dissertations / Theses on the topic "Nontraditional and Natural Pozzolans"

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Bondar, Dali. "Alkali activation of Iranian natural pozzolans for producing geopolymer cement and concrete." Thesis, University of Sheffield, 2009. http://etheses.whiterose.ac.uk/14553/.

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The challenge for the civil engineering community in the near future will be to realize the building of structures in harmony with the concept of sustainable development, through the use of high performance materials which have low environmental impact and can be produced at reasonable cost. Geopolymers are novel binder materials that could provide a route towards this objective. Although research on geopolymer has advanced, most of the previous research conducted on geopolymers has dealt with pastes and concentrated on the material's chemistry and microstructure. There is little information available concerning the engineering and durability properties of geopolymer concrete and none considering the use of natural pozzolans for production of geopolymer concrete. This investigation has studied the potential of using five natural pozzolans from Iran as geopolymer precursors. Most of the raw materials contain zeolites and clay minerals and have a high loss on ignition. Therefore, trials were made where samples were calcined at 700, 800 and 900°C. The solubility of both the raw and calcined materials in an alkaline solution was used as an indicator for pozzolanic activity. Improvements in pozzolanic properties due to heat treatment and elevated curing temperatures (20, 40, 60, and 80°C) were studied by using alkali solubility, XRD and compressive strength tests. It has been found that geopolymer binders can be synthesized by activating natural pozzolans and condensing them with sodium silicate in a highly alkaline environment. A new model is presented which allows the prediction of the alkali activated pozzolan strength from information on their crystallinity, chemical compositions and alkali solubility. Two types of Iranian natural pozzolans, namely Taftan which can be activated without calcination and Shahindej which was calcined were selected for further activation to study the effect of the alkaline medium on the strength of the alkali-activated natural pozzolan. The effect of the type, form, and concentration (molarities =2.5, 5.0, 7.5, 10.0 M) of the alkaline hydroxide, the modulus of sodium silicate (Si02INa20 ratio =2.1, 2.4, 3.1) and different curing conditions on the geopolymerisation of the above two natural pozzolans were studied. The optimum range and contributions for each factor is suggested based on their effect on compressive strength. An optimum paste formulation has been developed for concrete mixing together with the procedure of addition of the raw materials to the reaction mixture and suitable curing methods for producing the geopolymer concrete derived from them. The properties of this geopolymer concrete in both the fresh and hardened states have been investigated in terms of setting time, workability, air content, compressive strength, splitting tensile strength, static modulus of elasticity, ultrasonic pulse velocity, and drying shrinkage. Studies related to durability such as gas permeability, chloride ion penetration, and sulphate resistance have been undertaken and compared to these for typical OPC concretes. Some problems were encountered in applying the standard concrete durability tests. In this study attempts have been made to determine the relationships between the different properties of geopolymer concrete with its compressive strength and compared to results for ope concrete, to help to explain the differences between alkali-activated natural pozzolan concrete and ope concrete. In the countries which have large resources of natural pozzolan, geopolymer concrete based on alkali activation of these resources can help decrease the energy consumption and environmental impacts involved in using traditional cement pastes.
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Baltazar, Luís Gonçalo Correia. "Rheology of natural hydraulic lime grouts for masonry consolidation." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2014. http://hdl.handle.net/10362/13139.

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Olekambainei, Arip-Kituyan Emmanuel. "The influence of moulding moisture content on the engineering properties of aggregate-lime-natural pozzolan mixes." Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-06092005-094814.

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Tasca, Maisson. "ESTUDO DA CARBONATAÇÃO NATURAL DE CONCRETOS COM POZOLANAS: MONITORAMENTO EM LONGO PRAZO E ANÁLISE DA MICROESTRUTURA." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/7810.

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The carbonation in concrete is caused by the penetration of environmental carbonic anhydride (CO2) in concrete by diffusion, being considered one of more important structures pathologies. It occurs naturally in concrete structures, from the surface and causes the alkalis neutralization reactions, depassivating the rebars and its corrosion possibility. In this study the concrete investigation with 14 years old composed by binary and ternary mixtures of pozzolans as silica fume (10%), fly ash (25%), rice husk ash (25%), fly ash and silica fume (15+10)% and fly ash with rice husk ash (10+15)%. The natural carbonation depths were measured in cylindrical specimens with 0,5, 1, 2, 4 and 14 years readings, exposed in lab internal environment, in normal conditions of temperature and CO2 concentrations. Natural carbonation coefficients in the five cited ages were calculated, in equality of water/binder (w/b) relationship (0.35, 0.45 and 0.55), and 50 and 60 MPa axial compressive strength, and the results were compared with the short term tests (accelerated). Microstructure analysis by means of remained calcium hydroxide, hydrated compounds by DRX, porosity by Hg intrusion porosimetry and visual analysis by MEV and EDS were accomplished. Among the pozzolans mixtures the silica fume (10%) presented lower carbonation for w/b 0.35 and 0.45. For w/b 0.55 the better performance occurred to the fly ash and rice husk ash ternary mixture. The relationships between accelerated and natural carbonation coefficients showed decrease of the natural coefficients related to the accelerated ones, in a relation that varied between 1,0 and 2,0 (mean) for the pozzolanic mixtures. In 50 and 60 MPa compressive strength equality, the carbonation depended of the pozzolan type and content, being influenced by the chemical and physical properties of each one in particular. The microstructure tests results confirmed the CH decrease in the carbonated layer and the CaCO3 increase, and the hydrated silicates and silicoaluminates depolymerization. According NBR 15575-5 was observed that it is possible to obtain concretes with until 25% of pozzolans with performance of the project useful life, in front of carbonation, of 60 years.
A penetração de anidrido carbônico (CO2) ambiental por difusão no concreto ocasiona a carbonatação, sendo considerada uma das patologias mais importantes das estruturas. Acontece naturalmente nas estruturas de concreto, a partir da superfície e ocasiona reações de neutralização dos álcalis, despassivando a armadura e a possibilidade de sua corrosão. Neste estudo apresenta-se a investigação de concretos com 14 anos de idade, compostas de misturas binárias e ternárias de pozolanas sendo sílica ativa(10%), cinza volante(25%), cinza de casca de arroz(25%), cinza volante e sílica ativa (15+10)% e cinza volante com cinza de casca de arroz (10+15)%. As profundidades de carbonatação natural foram medidas em corpos de prova cilíndricos, com leituras a 0,5, 1, 2, 4 e 14 anos, expostos em ambiente interno de laboratório, em condições normais de temperatura e concentração de CO2. Calculou-se os coeficientes de carbonatação natural nas 5 idades citadas, em igualdade de relação a/ag (0,35, 0,45 e 0,55) e de resistência à compressão axial de 50 e 60 MPa, e comparou-se com os resultados de curto prazo (acelerado). Realizou-se análise da microestrutura por meio do teor de hidróxido remanescente, dos compostos hidratados por difração de raios-X, porosidade por porosimetria por intrusão de mercúrio e análise visual por microscopia eletrônica de varredura com EDS. O concreto de referência apresentou menor coeficiente de carbonatação nas três relações a/ag estudadas. Entre as misturas com pozolanas a sílica ativa (10%) apresentou menor carbonatação para a/ag 0,35 e 0,45. Para a/ag 0,55 o melhor desempenho aconteceu para a mistura ternaria de cinza volante e cinza de casca de arroz. As relações entre os ensaios acelerado e naturais mostraram decréscimo dos coeficientes de carbonatação natural em relação aos acelerados, numa relação que variou, em média, entre 1,0 e 2,0 para as mistura pozolânicas. Em igualdade de resistência à compressão de 50 e 60 MPa a carbonatação dependeu do tipo e do teor de pozolana, sendo influenciada pelas propriedades químicas e físicas de cada uma em particular. Os resultados dos ensaios da microestrutura confirmaram o decréscimo do CH nas camadas carbonatadas e acréscimo de CaCO3 e a despolimerização dos silicatos e silicoaluminatos de cálcio hidratados. Segundo a NBR 15575-2 observou-se que é possível obter-se concretos com até 25% de pozolanas, com desempenho à vida útil de projeto, frente a carbonatação, de 60 anos.
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Seraj, Saamiya. "Evaluating natural pozzolans for use as alternative supplementary cementitious materials in concrete." Thesis, 2014. http://hdl.handle.net/2152/28052.

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Concerns over the future availability of traditional SCM sources, such as fly ash, have left the concrete industry in need of alternative sources of SCMs. The research presented here has evaluated natural pozzolans such as pumice, perlite, vitric ash, zeolites, shale and calcined clay as alternative sources of SCMs. Unlike previous research that has only concentrated on empirically evaluating the performance of natural pozzolans in concrete, the research presented in this dissertation has measured both the performance of the pozzolans in cementitious mixtures as well as their physical and chemical characteristics, to draw meaningful relationships between pozzolan properties and performance. The physical and chemical characteristics of these natural SCMs were measured using techniques like particle size analysis, Brunauer–Emmett–Teller (BET) surface area, scanning electron microscope (SEM) imaging, x-ray fluorescence (XRF), x-ray diffraction (XRD), and thermal gravimetric analysis (TGA). The performance of the pozzolans as alternative SCMs was examined by looking at their effect on mortar strength and mixture workability, as well as by their ability to mitigate expansions from durability problems like alkali silica reaction (ASR) and sulfate attack. The performance of the pozzolans was related back to their physical and chemical characteristics to gain an understanding of the underlying mechanisms of cement and pozzolan interaction, and to draw insights as to why some pozzolans perform better than others in cementitious mixtures. Using this knowledge, some of the under-performing pozzolans were modified to see if changes in their properties could improve performance. Results of the research showed that other than the two coarse zeolites, the rest of the pozzolans tested could be used as Class F fly ash replacements in concrete, with the pumice, perlite, metakaolin and fine zeolite being the best performers in terms of mortar strength and durability. Although the pumice mortar had lower strengths than the control at early ages, results from the performance improvement studies showed that the reactivity of pumice could be enhanced by grinding the pozzolans to a finer particle size distribution. Zeolites were found to negatively affect mixture workability, but calcination of the zeolites helped to improve the workability of zeolite mixtures.
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Cano, Rachel Irene. "Evaluation of natural pozzolans as replacements for Class F fly ash in portland cement concrete." Thesis, 2013. http://hdl.handle.net/2152/23563.

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Most concrete produced today utilizes pozzolans or supplementary cementitious materials (SCMs) to promote better long term durability and resistance to deleterious chemical reactions. While other pozzolans and SCMs are available and provide many of the same benefits, Class F fly ash has become the industry standard for producing quality, durable concrete because of its low cost and wide-spread availability. With impending environmental and safety regulations threatening the availability and quality of Class F fly ash, it is becoming increasing important to find viable alternatives. This research aims to find natural, lightly processed, alternatives to fly ash that perform similarly to Class F fly ash with regards to pozzolanic reactivity and provide comparable compressive strength, workability, drying shrinkage, thermal expansion properties and resistance to alkali-silica reaction, sulfate attack, and chloride ion penetration. Eight fly ash alternatives from the US were tested for compatibility with the governing standard for pozzolans used in portland cement concrete and various fresh and hardened mortar and concrete properties. The results of this research indicate that six materials meet the requirements for natural pozzolans set by the American Society for Testing and Materials and many are comparable to Class F fly ash in durability tests. The primary concern when using these materials in concrete is the increase in water demand. The spherical particle shape of fly ash provides improved workability even at relatively low water-to-cement ratios; however, all of the materials tested for this research required grinding to achieve the appropriate particle size, resulting in an angular and rough surface area that requires more lubrication to achieve a workable consistency. So long as an appropriate water reducing admixture is used, six of the eight materials tested in this study are appropriate and beneficial for use in portland cement concrete.
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Books on the topic "Nontraditional and Natural Pozzolans"

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International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete (9th 2007 Warsaw, Poland). Ninth CANMET/ACI international conference on fly ash, silica fume, slag & natural pozzolans in concrete. Edited by Malhotra V. M, Canada Centre for Mineral and Energy Technology., and American Concrete Institute. Farmington Hills, Mich: American Concrete Institute, 2007.

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International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete (9th 2007 Las Vegas, Nev.). Ninth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete. Edited by Malhotra V. M and American Concrete Institute. Farmington Hills, MI: American Concrete Institute, 2007.

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International, Conference on Fly Ash Silica Fume Slag and Natural Pozzolans in Concrete (7th 2001 Madras India). Seventh CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete. Farmington Hills, Michigan: ACI International, 2001.

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International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete (4th 1992 Istanbul, Turkey). Fly ash, silicafume, slag, and natural pozzolans in concrete: Proceedings fourth International Conference, Istanbul, Turkey, May 1992. Edited by Malhotra V. M and American Concrete Institute. Detroit: American Concrete Institute, 1993.

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International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete (4th 1992 Istanbul, Turkey). Fly ash, silicafume, slag, and natural pozzolans in concrete: Proceedings fourth International Conference, Istanbul, Turkey, May 1992. Edited by Malhotra V. M and American Concrete Institute. Detroit: American Concrete Institute, 1993.

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International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete (6th 1998 Bangkok, Thailand). Fly ash, silica fume, slag & natural pozzolans in concrete: Proceedings, Sixth CANMET/ACI International Conference, Bangkok, Thailand, 1998. Edited by Malhotra V. M, Canada Centre for Mineral and Energy Technology., and American Concrete Institute. Farmington Hills, Mich: ACI International, 1998.

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International Conference on the Use of Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete (4th 1991 Istanbul, Turkey). Fly ash, silica fume, slag, and natural pozzolans in concrete: Proceedings, fourth international conference, Istanbul, Turkey, May 1992. Edited by Malhotra V. M, Canada Centre for Mineral and Energy Technology., and American Concrete Institute. Detroit, Mich: American Concrete Institute, 1993.

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International, Conference on Fly Ash Silica Fume Slag and natural Pozzolans in Concrete (5th 1995 Milwaukee Wis ). Fly ash, silica fume, slag, and natural pozzolans in concrete: Proceedings fifth International Conference, Milwaukee, Wisconsin, USA, 1995. Detroit: American Concrete Institute, 1995.

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International, Conference on Fly Ash Silica Fume Slag and Natural Pozzolans in Concrete (7th 2001 Chennai India). Seventh CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete: [proceedings of the conference held July 22-27, 2001, in Chennai (Madras), India]. Farmington Hills, MI: American Concrete Institute, 2001.

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ACI Committee 232., ed. Use of natural pozzolans in concrete. Detroit, Mich: American Concrete Institute, 1995.

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Book chapters on the topic "Nontraditional and Natural Pozzolans"

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Dedeloudis, Christos, Monika Zervaki, Kosmas Sideris, Maria Juenger, Natalia Alderete, Siham Kamali-Bernard, Yury Villagrán, and Ruben Snellings. "Natural Pozzolans." In RILEM State-of-the-Art Reports, 181–231. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70606-1_6.

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Ramezanianpour, Ali Akbar. "Natural Pozzolans." In Springer Geochemistry/Mineralogy, 1–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36721-2_1.

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Shukla, Ashish, and Nakul Gupta. "Study on the Efficacy of Natural Pozzolans in Cement Mortar." In RILEM Bookseries, 469–80. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2806-4_54.

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Ricardo, Joaquín Raúl Cuetara, and Rolando Batista Gonzales. "First Experiences with Geopolymeric Mortars of Alkaline Activation Based on Natural Pozzolans." In RILEM Bookseries, 101–10. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22034-1_12.

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Naturinda, Dans Nshekanabo. "Practical Application of Natural Pozzolans and Lime for Cost Optimisation in Low-Cost Housing." In Collaboration and Integration in Construction, Engineering, Management and Technology, 279–83. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48465-1_46.

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Baltimore, Craig V. "A Long-Term Solution of a Sustainable Robust Self-Consolidating Grout Considering Natural Pozzolans." In Masonry 2022: Advancing Masonry Technology, 184–89. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2022. http://dx.doi.org/10.1520/stp164020210076.

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"Natural pozzolans." In Cement and Concrete Mineral Admixtures, 5–10. CRC Press, 2016. http://dx.doi.org/10.1201/b20093-3.

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"Natural pozzolans." In Cement and Concrete Mineral Admixtures, 22–27. CRC Press, 2016. http://dx.doi.org/10.1201/b20093-5.

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Sánchez de Rojas Gómez, M. I., and M. Frías Rojas. "Natural pozzolans in eco-efficient concrete." In Eco-Efficient Concrete, 83–104. Elsevier, 2013. http://dx.doi.org/10.1533/9780857098993.2.83.

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McDonough, Jeffrey K. "Hume’s Dialogues Concerning Natural Religion." In Saints, Heretics, and Atheists, 168—C18.P39. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780197563847.003.0018.

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Abstract:
Abstract This chapter considers various objections to the argument from design in the context of Hume’s Dialogues Concerning Natural Religion. The first section looks at Hume’s famous regress objection to the argument from design. The second section takes up the general objection that the argument from design supports nontraditional theist views more than traditional theist views. The third section examines the charge that the argument from design is consistent with there being an immanent designer, while the fourth section considers the possibility that design is consistent with there being no designer at all. Finally, the fifth section considers three contemporary objections to the argument from design.
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Conference papers on the topic "Nontraditional and Natural Pozzolans"

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"Mitigating Effect of Pozzolans on Alkali-Silica Reactions." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2036.

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Nader Ghafoori, Nader Ghafoori, Arash Kian Arash Kian, Ariful Hasnat Ariful Hasnat, and Stanley Tat Stanley Tat. "Comparison of industrial and natural pozzolans for ASR mitigation." In Fifth International Conference on Sustainable Construction Materials and Technologies. Coventry University and The University of Wisconsin Milwaukee Centre for By-products Utilization, 2019. http://dx.doi.org/10.18552/2019/idscmt5111.

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"Longterm Strength Development of Silica Fume Concrete." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2383.

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""Properties of High-Strength Concrete Using Classified Fly Ash"""""." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/1935.

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"Durability of High Early Strength Silica Fume Concretes Subjected to Accelerated and Normal Curing." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/1222.

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"Reaction Mechanism of Blended Cements: A 29Si NMR Study." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2195.

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"Effect of Mineral Admixtures on the Cement Paste-Aggregate Interface." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2111.

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"Influence of Mechanical Strength and Curing Methods on Sea water Durability of Mortars Containing Fly Ashes and Slag." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2045.

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"Influence of Fly ash and Moist Curing Time on Concrete Permeability." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/1250.

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""Properties and Microstructure of High-Performance Concretes Containing Silica Fume, Slag and Fly Ash"." In "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2250.

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Reports on the topic "Nontraditional and Natural Pozzolans"

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Sleep, Matthew, and Morgan Masley. The Use of Mt. Mazama Volcanic Ash as Natural Pozzolans for Sustainable Soil and Unpaved Road Improvement. Transportation Research and Education Center, 2018. http://dx.doi.org/10.15760/trec.202.

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