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Articoli di riviste sul tema "Curing"

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Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 luglio 2024

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1

Jeong, Jin-Hoon, e Dan G. Zollinger. "Development of Test Methodology and Model for Evaluation of Curing Effectiveness in Concrete Pavement Construction". Transportation Research Record: Journal of the Transportation Research Board 1861, n. 1 (gennaio 2003): 17–25. http://dx.doi.org/10.3141/1861-03.

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Early-age moisture loss from the surface of a concrete pavement may induce undesirable effects that play a factor in long-term performance. Early-age detrimental behavior such as slab curling, warping, delamination, and even plastic shrinkage cracking are affected by the amount of evaporation and the effectiveness of the curing medium. The rate of evaporation is a key item in the monitoring of the quality of the curing. However, most approaches for this are largely empirical and are useful only under laboratory conditions. The effective curing thickness concept is introduced as a method to evaluate the effectiveness of a curing method. The surface relative humidity has the biggest influence on both the effective curing thickness and the rate of evaporation. Thus, prediction of the rate of evaporation of the water from concrete depends on the relative humidity of the surface and is important for evaluation of the curing method. Existing evaporation models, including the American Concrete Institute nomograph, were evaluated for their capabilities in predicting evaporation from curing concrete. Data from a series of laboratory experiments with a modified version of Penman’s evaporation model are also presented.

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2

Zhang, Zengping, Guozheng Liang, Changqing Fang, Jianzhong Pei e Shuanfa Chen. "Curing octaepoxysilsesquioxane with different curing agents". Journal of Applied Polymer Science 125, n. 3 (20 gennaio 2012): 2281–88. http://dx.doi.org/10.1002/app.36452.

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3

Hustin, J., e E. Jauniaux. "Curing the human embryo—curing the placenta". Human Reproduction 8, n. 11 (novembre 1993): 1966–82. http://dx.doi.org/10.1093/oxfordjournals.humrep.a137969.

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4

Dalrymple, Theodore. "Curing Crime". Chesterton Review 35, n. 3 (2009): 780–81. http://dx.doi.org/10.5840/chesterton2009353/4113.

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5

MATSUYAMA, Akira. "Curing Catalyst". Journal of the Japan Society of Colour Material 66, n. 9 (1993): 561–70. http://dx.doi.org/10.4011/shikizai1937.66.561.

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6

Silver, Sue. "Curing mediaphobia". Frontiers in Ecology and the Environment 1, n. 4 (maggio 2003): 171. http://dx.doi.org/10.1890/1540-9295(2003)001[0171:cm]2.0.co;2.

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7

Monsen, Rita Black. "Curing children". Journal of Pediatric Nursing 15, n. 4 (agosto 2000): 205–6. http://dx.doi.org/10.1053/jpdn.2000.9027.

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8

McFarland, Ernie. "Curing calculatoritis". Physics Teacher 24, n. 1 (gennaio 1986): 34. http://dx.doi.org/10.1119/1.2341928.

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9

Dalrymple, T. "Curing crime". BMJ 338, jun03 2 (3 giugno 2009): b2240. http://dx.doi.org/10.1136/bmj.b2240.

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10

Crainer, Stuart. "Curing healthcare". Business Strategy Review 18, n. 4 (dicembre 2007): 75–79. http://dx.doi.org/10.1111/j.1467-8616.2007.00504.x.

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11

Crease, Robert P. "Curing anosognosia". Physics World 19, n. 2 (febbraio 2006): 18. http://dx.doi.org/10.1088/2058-7058/19/2/33.

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12

Wells, William. "Curing diabetes". Genome Biology 1 (2000): spotlight—20001123–01. http://dx.doi.org/10.1186/gb-spotlight-20001123-01.

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13

Mitsuyasu, Ronald. "Curing HIV". Current Opinion in HIV and AIDS 8, n. 3 (maggio 2013): 224–29. http://dx.doi.org/10.1097/coh.0b013e32835ef0a1.

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14

Ashbee, Ruth. "Curing depression". New Scientist 210, n. 2810 (aprile 2011): 25. http://dx.doi.org/10.1016/s0262-4079(11)60981-0.

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15

Norton, Emma. "Curing Cancer". Lancet Oncology 15, n. 13 (dicembre 2014): 1432. http://dx.doi.org/10.1016/s1470-2045(14)71147-7.

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16

Alex, Gary. "CURING LIGHTS". Journal of the American Dental Association 133, n. 10 (ottobre 2002): 1321–22. http://dx.doi.org/10.14219/jada.archive.2002.0039.

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17

Robert Benson. "Curing Babylon". Sewanee Review 116, n. 2 (2008): 274–82. http://dx.doi.org/10.1353/sew.0.0007.

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18

Gopala krishna sastry, K. V. S., e Putturu manoj kumar. "Self-curing concrete with different self-curing agents". IOP Conference Series: Materials Science and Engineering 330 (marzo 2018): 012120. http://dx.doi.org/10.1088/1757-899x/330/1/012120.

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19

L. R. Walton, L. D. Swetnam e J. H. Casada. "Curing Burley Tobacco in a Field Curing Structure". Applied Engineering in Agriculture 10, n. 3 (1994): 385–89. http://dx.doi.org/10.13031/2013.25867.

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20

Patil, Pranali, Rushikesh Tithe, Prasad Gaikwad, Avdhoot Pasalkar e Tejas Khirid. "Economical Curing Method by Curing Pad for Beam". International Journal for Research in Applied Science and Engineering Technology 11, n. 5 (31 maggio 2023): 2492–97. http://dx.doi.org/10.22214/ijraset.2023.51946.

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Abstract (sommario):

Abstract: Efficient uninterrupted curing is a key to quality concrete. Proper curing of concrete is crucial to obtain design strength and maximum durability considering the cost of curing. Curing is designed primarily to keep the concrete moist, by preventing the loss of moisture from the concrete during the period in which it gains strength. Due to rising problem of scarcity of water and expensive conventional methods of curing, it had become necessary to build-up a new method for concrete curing. This paper represents the experimental work related to a newly developed, effective and economical method of beam curing. This method consists of a technology namely ‘Curing Pad’ that not only absorbs and retains water for an extended period of time but also reduces evaporation losses. Concrete pad consists of 3 layers. The top layer is of a reflector material that reduces evaporation losses. The middle layer comprises of an absorbent material that stores and transmits water to the concrete beam. Bottom layer is binding or packing layer that holds all three layers together. Various tests are performed to check the durability of Curing Pad as well as its performance on concrete beam. These test results are compared to those of ponding method of beam curing.

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21

Chen, Ai Jun, Jia Sheng Zhang, Li Ying Peng e Zhen Hua Ren. "Indoor Experimental Research on the Unconfined Compressive Strength of Lime Improving Expansive Clay". Advanced Materials Research 250-253 (maggio 2011): 2296–301. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2296.

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Guangxi province is the typical expansive soil area, and the unconfined compressive strength is the important strength index. There is little studied result about the unconfined compressive strength of expansive soil in Guangxi province. Based on the expansive clay experimental embankment of Nanyou Highway, the experimental research on the unconfined compressive strength was undertaken. Tests results indicate that the expansive clay samples are all disintegrated when the sample is dip in water, which show that the stability of expansive clay is very weak. Some lime improving samples of curling 7 days and 14 days are also disintegrated when dipping in water, which indicate that the unconfined compressive strength sample of lime improving expansive clay should curl 28 days. Lime ratio and curing time both influence the unconfined compressive strength of improving expansive clay greatly. There is optimum adding lime ratio for lime improving expansive clay. During the early days of curing the unconfined compressive strength have linear increase with curing time.

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22

Phua, Evonne Mei Jing, John Neil Waddell e Joanne Jung Eun Choi. "Curing through Ceramics: Influence of Different Light-Curing Units and Curing Modes on Bond Strength". Oral 2, n. 1 (17 febbraio 2022): 62–74. http://dx.doi.org/10.3390/oral2010008.

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Objectives: To measure and compare the bond strength between three different types of ceramics and resin cement, as well as the degree of conversion of resin cement after using different light-curing units and curing modes. Methods: Three types of ceramics—Leucite-reinforced (Empress CAD), Lithium disilicate (Emax CAD), and Zirconia (Emax ZirCAD)—of varying thicknesses (1.5 mm and 2.0 mm) were bonded to a light-cure resin cement (Variolink Esthetic LC). Light-curing was carried out using a monowave LCU (3M Elipar DeepCure-S LED Curing Light with irradiance of 1470 mW/cm2) and with polywave LCU (Ivoclar Bluephase PowerCure) using High, Turbo, and 3 s curing modes, respectively (1200, 2100, 3000 mW/cm2). A chevron-notch bond strength test (total n = 288) was conducted to calculate the fracture energy and interfacial bond strength (J/m2). The degree of cure (%DC) of the residual resin cement on debonded surfaces was measured using Fourier Transform Infrared Spectroscopy (FTIR). Collected data were statistically analysed under SPSS ver. 27 by conducting an ANOVA and Bonferroni post hoc test. The mode of failure was established using a scanning electron microscope (SEM). Results: A significant difference in interfacial bond strength was found between the three types of ceramic material groups (p < 0.01). Cement cured through Empress that was 2 mm thick showed the highest bond strength (1.36 ± 0.46 J/m2), while the lowest was observed (0.26 ± 0.07 J/m2) in 2 mm Emax CAD using the 3 s mode. The use of different LCUs and curing modes had a significant influence on the %DC of resin cement seen in all groups, except 2 mm Emax ZirCAD. The dominant mode of failure for Empress, EmaxCAD, and EmaxZirCAD were cohesive, adhesive, and mixed, respectively. Conclusions: The type of ceramic and its thickness can significantly affect bond strength, and the results showed that polywave LCU is more effective than monowave LCU when curing through ceramics.

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23

Rostami, Vahid, Yixin Shao e Andrew J. Boyd. "Carbonation Curing versus Steam Curing for Precast Concrete Production". Journal of Materials in Civil Engineering 24, n. 9 (settembre 2012): 1221–29. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0000462.

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24

Rahiotis, Chris, Afrodite Kakaboura, Michalis Loukidis e George Vougiouklakis. "Curing efficiency of various types of light-curing units". European Journal of Oral Sciences 112, n. 1 (febbraio 2004): 89–94. http://dx.doi.org/10.1111/j.0909-8836.2004.00092.x.

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25

Gallot-Lavallée, O., G. Teyssedre, C. Laurent, S. Robiani e S. Rowe. "Curing and post-curing luminescence in an epoxy resin". Journal of Applied Polymer Science 100, n. 3 (2006): 1899–904. http://dx.doi.org/10.1002/app.22555.

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26

S P Anshad, Abhin. "Diabetics Diagnosis and Curing Mechatronics System". International Journal of Science and Research (IJSR) 12, n. 8 (5 agosto 2023): 1892–94. http://dx.doi.org/10.21275/sr23819135738.

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27

G, Chidananda. "Effect of Curing Methods on Strength and Durability Properties of M30 Grade Concrete". International Journal for Research in Applied Science and Engineering Technology 9, n. 11 (30 novembre 2021): 1386–89. http://dx.doi.org/10.22214/ijraset.2021.39035.

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Abstract: This paper presents an experimental investigation on influence of different curing methods on the performance of M30 grade concrete. Different curing methods such as air curing, pond curing, intermittent curing, gunny bags curing, chemical curing and using Super Absorbent Polymer (SAP) by 0.3% of weight of cement are considered. Slump and compacting factor tests are performed to know the workability of fresh concrete. Compressive strength of hardened concrete is determined for concrete specimens cured by different curing methods. Durability in terms of carbonation resistance on hardened concrete is also performed as per IS 516 (Part 5/Sec 3, 2021) codal provisions. Depending upon the site conditions and availability of potable water, curing methods such as pond curing, intermittent curing, gunny bags curing, chemical curing and SAP curing can be adopted in site to achieve the expected strength and durability requirements. Keywords: Curing methods, Compressive strength and Carbonation resistance.

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28

Mu, Zhong Guo, Xue Lian Bai, Yi Ding Luo, Jian Ting Mei e Ming Hu Zhang. "Study on Microwave Curing of Polyurethane (PU)/Epoxy (EP) Interpenetrating Networks (IPN)". Applied Mechanics and Materials 556-562 (maggio 2014): 649–52. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.649.

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Microwave curing of PU/EP IPN was studied in this paper. Microwave curing IPN was prepared by means of intermittent microwave heating, The results indicates that microwave curing technique can shorten curing time remarkably. The microwave curing and thermal curing IPN have identical structure, tensile property of microwave curing IPN is better than that of thermal curing IPN, Impact strength of thermal curing IPN is slightly higher.

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29

Joshaghani, Alireza, e Dan G. Zollinger. "Assessment of Concrete Pavement Set Gradient Based on Analysis of Slab Behavior and Field Test Data". Transportation Research Record: Journal of the Transportation Research Board 2673, n. 6 (16 maggio 2019): 512–23. http://dx.doi.org/10.1177/0361198119849900.

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This paper discusses how the set gradient in a jointed concrete slab is related to the cracking performance and its effects on fatigue crack model calibration. The role of curing quality on-set and how curing quality parameters are related to the set gradient is also discussed. To assess the impacts of curing practices on the set gradient of a newly constructed concrete slab, a field investigation was undertaken at the Florida Department of Transportation State Materials Office in Gainesville, Florida. This study investigated early age concrete pavement behavior with respect to the development of the set gradient. In this research, four test slabs were placed and cured under different conditions to create different states of stress and creep behavior during and after hardening of the concrete. Early age concrete temperature and moisture history are key factors that affect the slab curling and warping behavior as they pertain to the resulting set gradient. This paper elaborates on the details of the cracking performance data analysis of test data associated with the development of the set gradient.

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30

N.T, Dr Nishad. "Curing Efficacy of LED and QTH Light Curing Units for Curing Nanocomposite Resins – A Systematic Review". IOSR Journal of Dental and Medical Sciences 11, n. 2 (2013): 36–44. http://dx.doi.org/10.9790/0853-1123644.

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31

Katsuoka, Nana, Tsubasa Sato, Yoshiki Uno e Shigeyuki Date. "Effect of Initial Water Sprinkling Curing on Strength Development of Precast Concrete". Materials Science Forum 1084 (13 aprile 2023): 157–64. http://dx.doi.org/10.4028/p-1l95r6.

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Abstract (sommario):

In general, steam curing is applied to improve the productivity of precast concrete products. After steam curing, products are stored outdoors for secondary curing before shipment. However, drying shrinkage and microcrack expansion that occurs during steam curing may impede strength enhancement. On the other hand, water curing is also clearly effective as a secondary curing process. However, installing a water curing pool in a precast concrete plant is not easy due to limited space. Therefore, this study focused on water sprinkling curing, which is relatively easy to perform without such restrictions. In this study, the effects of water sprinkling curing on the physical properties of mortar at the initial age of steam curing were investigated from the aspects of materials, mix proportions, curing conditions, and test piece dimensions. The results showed that water sprinkling curing increased the compressive strength by about 10% compared to curing under air. The effect of water sprinkling curing increased as the specific surface area of the test piece increased.

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32

Chen, Haibo, Dan Zhou, Zhousheng Huang e Jiawei Wang. "Experimental and Prediction Model Study of Carbonation Resistance of High Performance Concrete under Influence of Curing Conditions". Journal of Physics: Conference Series 2468, n. 1 (1 aprile 2023): 012099. http://dx.doi.org/10.1088/1742-6596/2468/1/012099.

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Abstract The carbonation resistance of high performance concrete is closely related to the service life of concrete structure, and is an important parameter to reflect its durability. The carbonation resistance of concrete is influenced on selection of curing conditions greatly. In the paper, based on the common curing conditions, the carbonation tests of high performance concrete under different curing methods and curing time were carried out, and the influence mechanism of curing conditions on the carbonation resistance of materials was qualitatively analyzed. The exponential function expression of curing time and carbonation depth was fitted when curing by wet straws. The results show that: in terms of carbonation resistance, the order is wet straw curtain curing, plastic film curing and curing agent curing, and should be cured in advance. The carbonation depth is effectively reduced by short-term curing (3d) and medium-term curing (7d), but the reduction rate slows down, and 7d curing is suggested. The fitted prediction model is calculated the carbonation depth of concrete materials, and the test results are provided data for the selection of curing conditions and time of engineering.

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33

Bhattarai, Y., P. Chapagain, S. Panthi e S. P. Shrestha. "Exploring the Impact of Curing Techniques on the Compressive Strength of Concrete Structures: A Comprehensive Investigation". Journal of Lumbini Engineering College 6, n. 1 (30 maggio 2024): 78–83. http://dx.doi.org/10.3126/lecj.v6i1.66285.

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This research investigates the influence of various curing methods on the compressive strength of plain concrete, exploring techniques such as water ponding, jute curing, plastic bag curing, dry curing, and geo-textile curing. Emphasizing both early and long-term concrete strength enhancement, the study identifies water ponding and geo-textile curing as the most promising for high early strength, while jute curing and plastic bag curing exhibit moderate performance, with dry curing ranking as the least effective. Incorporating insights from industry professionals through a structured questionnaire, the research underscores the collective awareness of the pivotal role of proper curing practices in concrete strength and durability. The study recommends further exploration into the influence of varying slump values and alternative curing methods, considering diverse environmental conditions, with the potential to optimize curing practices for robust and durable concrete structures. In conclusion, this research highlights the critical importance of correct curing practices for ensuring concrete structures' strength and longevity, offering practical implications for the construction industry and civil engineering.

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34

Al-Qadhi, M., Necar Merah e K. Mezghani. "Optimizing the Curing Process of Epoxy-Clay Nanocomposites". Key Engineering Materials 471-472 (febbraio 2011): 415–19. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.415.

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Epoxy resin is one of the most applied thermoset polymers as a matrix for Glass Fiber Reinforced Pipes (GFRP). Curing process of epoxy resin is important for the integrity of the GFRP. The present work has been conducted to determine the proper pre-curing and post-curing temperatures and duration to develop epoxy-clay nanocomposite. During this study a differential scanning calorimeter (DSC) was used to determine the glass transition temperature and hence the degree of curing. Several samples of epoxy were prepared at different pre-curing and post-curing temperatures and durations. Pre-curing temperatures ranging from 80 to 150°C and post-curing temperatures ranging from 150 to 200°C were studied. The results show that the optimum pre-curing and post-curing temperatures are 100 and 170°C, respectively. Regarding the effect of curing duration, several specimens were prepared at the same pre-curing and post-curing temperatures with different curing durations of 1, 2, and 3 hours. It was observed that beyond one hour curing, the changes in the Tg and the degree of crosslinking were negligible. Using these optimum conditions samples of epoxy-clay nanocomposites were prepared using ultrasonication. The results showed that the addition of nonoclay to epoxy resulted in a reduction of the Tg.

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35

Yin, Jicai, Yanli Teng, Xiaojun Meng, Yuanyuan Ge e Xiuhong Zhang. "Influence of fly ash on the curing characteristics of an epoxy resin". Polymers and Polymer Composites 28, n. 8-9 (13 dicembre 2019): 579–88. http://dx.doi.org/10.1177/0967391119894083.

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With excellent damping capacity, growing interest has been focused on polymer concrete (PC) as a novel machine tool bed material in the field of ultraprecision machining. It is widely acknowledged that the fly ash (FA) is an essential component material in reducing the curing shrinkage of PC, which can significantly affect the curing characteristic of PC. However, the effect of FA on the curing characteristic of epoxy resin is not studied in detail. In this article, the effect of FA on the curing characteristic of epoxy resin was examined by differential scanning calorimetry. Experimental results show that the peak temperature and curing rates of epoxy resin/curing agent and epoxy resin/curing agent/FA increase with the increasing heating rates, and the peak temperature and curing rates of epoxy resin/curing agent are greater than that of the epoxy resin/curing agent/FA with the same heating rates. In addition, the difference between the maximum curing rates of epoxy resin/curing agent and epoxy resin/curing agent/FA decreased with the increasing heating rates. This article can provide technical reference for curing process of PC for machine tool beds and further improve the machining accuracy.

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36

Yun Ming, Liew, Kamarudin Hussin, Mohd Mustafa Al Bakri Abdullah, Mohammed Binhussain, Luqman Musa, Ismail Khairul Nizar, Che Mohd Ruzaidi Ghazali e C. Y. Heah. "Effect of Curing Regimes on Metakaolin Geopolymer Pastes Produced from Geopolymer Powder". Advanced Materials Research 626 (dicembre 2012): 931–36. http://dx.doi.org/10.4028/www.scientific.net/amr.626.931.

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The properties of metakaolin geopolymer paste are affected by the alkali concentration, the initial raw materials, solidification process, and amount of mixing water as well as the curing conditions. This study aimed to investigate the effect of curing temperature (room temperature, 40°C, 60°C, 80°C and 100°C) and curing time (6h, 12h, 24h, 48h and 72h) on the geopolymer pastes produced from geopolymer powder. The results showed that curing at room temperature was unfeasible. Heat was required for the geopolymerization process, where strength increased as the curing temperature was increased. Moderate elevated curing temperature favored the strength development of geopolymer pastes in comparison with those treated with extreme elevated curing temperature. When geopolymer paste was subjected to extreme elevated curing temperature, shorter curing time should be used to avoid deterioration in strength gain. Similarly, longer curing time was recommended for moderate elevated curing temperature. The microstructure of geopolymer paste cured at moderate curing temperature showed obvious densification of structure. In contrast, the structure formed was weak and less compact at very high elevated curing temperature.

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37

Sato, Tsubasa, Nana Katsuoka, Yoshiki Uno e Shigeyuki Date. "Basic Study on the Effect of Water Sprinkling Curing Immediately after Demolding on the Initial Strength of Steam Cured Mortars". Materials Science Forum 1084 (13 aprile 2023): 131–37. http://dx.doi.org/10.4028/p-0msj77.

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Abstract (sommario):

Steam curing is generally applied to improve productivity of precast concrete products. After steam curing, the products are stored outdoors as a secondary curing process until shipment. However, drying shrinkage and expansion of microcracks that occur during steam curing may inhibit strength improvement. On the other hand, water curing is also clearly effective as a secondary curing process. However, installing a water curing pool in a precast concrete plant is not easy due to limited space. Therefore, we focused on water sprinkling curing, which is relatively easy to perform without such restrictions. In this study, the effects of water sprinkling curing on the physical properties of mortar at the early age of steam curing were studied from the aspects of materials, mix proportions, curing conditions, and temperature of water used for sprinkling curing. As a result, it was confirmed that water sprinkling curing at an early age after demolding resulted in a rapid decrease in the temperature of the mortar surface layer. However, it was confirmed that the same conditions were effective in increasing compressive strength.

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38

Fawzi, Nada Mahdi, e Ahmed Saher Tawfeeq Agha. "The Effect Of Curing Types On Compressive Strength Of High Performance Concrete". Journal of Engineering 18, n. 07 (21 luglio 2023): 768–83. http://dx.doi.org/10.31026/j.eng.2012.07.01.

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Abstract (sommario):

The present investigation considers the effect of curing temperatures (30, 40, and 50˚C) and curing compound method on compressive strength development of high performance concrete, and compares the results with concrete cured at standard conditions and curing temperature (21˚C). The experimental results showed that at early ages, the rate of strength development at high curing temperature is greater than at lower curing temperature, the maximum increasing percentage in compressive strength is 10.83% at 50C˚ compared with 21C˚ in 7days curing age. However, at later ages, the strength achieved at higher curing temperature has been less, and the maximum percentage of reduction has been 5.70% at curing temperature 50C˚ compared with 21C˚curing temperature in 91 days curing age. Also, the results showed that the specimens which are cured under field condition (using curing compound) have a various strength development rate, and the results indicate 92.11% as minimum field-standard curing strength ratio.

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39

Wang, Xiaoxia, Qinglin Wang, Linlin Gao e Yuxi Jia. "Effect of Heat Treatment on Curing Uniformity of Fiber Composite Laminates". Polymers and Polymer Composites 25, n. 1 (gennaio 2017): 29–34. http://dx.doi.org/10.1177/096739111702500105.

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A numerical simulation procedure is presented to investigate the heat transfer and temperature distribution and then predict the curing uniformity of fiber/resin composite laminates during the hot molding process. By means of a coupled thermochemical simulation of the composite material curing process, the effects of curing temperature and heating rate on curing uniformity are investigated. Compared with the curing process with lower temperature and heating rate, the curing process with higher temperature and heating rate can cure the composites much faster but generate more uneven temperature distribution. By comparatively analyzing the influencing factors of curing non-uniformity, the curing characteristics of composites are revealed distinctly, which is helpful to understand the curing mechanism and design optimal curing cycle according to specific requirements.

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40

Zhang, Kun, Bai Ru Lu, Xun An Zhang, Yi Hong Wang e Zhan Qu. "Research on Weibull Distribution Theory for Cubic Compressive Strength Test Method of Raw Earth Materials with Different Curing Methods and Time". Key Engineering Materials 896 (10 agosto 2021): 129–40. http://dx.doi.org/10.4028/www.scientific.net/kem.896.129.

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Cube compressive strength of raw-soil based mater is an important index of mechanical property. Because the test results vary by different curing modes and trial curing time, compressive strength test on 160 cubic raw-soil test-pieces which were made by 4 curing modes (natural curing, indoor curing, indoor+ preservative film curing, curing in standard curing chamber) and 4 Curing period (4d, 14d, 21d, 28d) was designed.In this study,the failure mechanism, failure mode, force mechanism of test were analyzed.Using Weibull distribution theory, the influence of different environmental factors on material strength is discussed.The research revealed that the different curing methods and curing time had remarkable effect on failure mode of material, but the load displacement curves had not affected. The compressive strength with 21d and 28d ‘s indoor curing and standard curing method were same in the test.The strength of raw soil increases with time, and the curing temperature had a significant effect on the early strength of raw soil materials, but had little effect on the later strength. The humidity had a great influence on the later growth of material strength. Constant temperature and humidity could effectively ensure the full response of internal water loss hardening of raw soil-based materials, and the strength of specimens increases obviously.The recommended curing mode and standard curing time for standard test of raw-soil test-pieces were temperature of 25-30oC, humidity of 50%-55%, and 28day, respectively.

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Liu, Yuzhang, Jun Zhang, Jiang Chang, Shixiang Xie e Yongsheng Zhao. "Effect of the Thermal Insulation Cover Curing on Temperature Rise and Early-Age Strength of Concrete". Materials 15, n. 8 (10 aprile 2022): 2781. http://dx.doi.org/10.3390/ma15082781.

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In the present paper, the effects of thermal insulation cover curing on the rise in temperature of concrete, and further on the mechanical properties of the concrete are measured experimentally. In the experiments, polyurethane foam boards of 100 mm thickness were used for thermal insulation, and three concrete strength grades of C30, C50 and C80, were used as concrete samples. Conventional standard curing, and two heat curing methods with a constant temperature of 40 °C and 60 °C were used for comparison. The pore structure of the cement paste subject to the different curing procedures, including insulation cover curing, heat curing and standard curing, was experimentally measured using mercury intrusion porosimetry. The test results show that rate of increase in compressive strength compared with standard curing is 22–34%, 16–26%, and 23–67%, respectively, for C30, C50, C80 concrete after being subject to 1 to 3 days thermal insulation cover curing in the initial period after concrete casting. As expected, initial heat curing of concrete will result in a reduction in the long-term strength of the concrete. At 28 days, the strength reduction rate compared with standard curing due to the insulation cover curing is 3.1–5.9%, 0.6–3.0%, 0–3.2%, respectively, for C30, C50, C80 concrete. By contrast, the compressive strength reduction compared with standard curing at 28 days is 8.6–10.5%, 8.6–9.1%, 4.7–5.6%, respectively, for C30, C50, C80 concrete after being subject to a constant heat curing of 40 °C and 60 °C in the initial period after concrete casting. Measurement of the pore structure of the paste subject to different curing procedures initially after casting shows that rising curing temperature leads to coarser pores, especially an increase in capillary pore fraction. Among the four curing methods used in the present study, the effect of insulation cover curing and low temperature (40 °C) heat curing on the capillary pore content is small, while the effect of high temperature (60 °C) heat curing is significant.

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42

Li, Chuang, Jiyong Shi, Xiaodong Zhai, Zhikun Yang, Xiaowei Huang, Zhihua Li, Yanxiao Li e Xiaobo Zou. "Effects of Pulsed Pressure Curing on Beef Quality". Foods 12, n. 3 (3 febbraio 2023): 656. http://dx.doi.org/10.3390/foods12030656.

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The study was proposed to investigate the effects of pulsed pressure curing on the beef absorption of the curing solution, cooking loss, moisture content, centrifugal loss, salt content, sensory attributes, texture, microstructures and volatile compounds. Curing methods include the following four treatments: (1) control group 1—static curing (SC); (2) control group 2—vacuum curing (VC); (3) control group 3—pressurized curing (PC); and (4) treatment group—pulsed pressure curing (PPC). The acquired results revealed that pulsed pressure curing significantly boosts the curing efficiency and moisture content, decreases cooking loss in beef, brightens meat color, and enhances texture compared to static curing, vacuum curing, and pressurized curing. Additionally, centrifugal losses were not impaired, and sensory findings revealed that PPC significantly improved the saltiness of beef. TPA results showed that the springiness and cohesiveness of PPC were greatly increased, and hardness and chewiness were significantly reduced. Moreover, PPC significantly reduced the content of 1-octen-3-ol and 1-hexanol. Scanning electron microscopy (SEM) images documented that pulsed pressure curing can effectively increase the tenderness of beef. This study demonstrates that processed meat product efficiency and sensory attributes should be taken into account when selecting a curing technique, and the PPC technique has an advantage in both areas.

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Siekmann, Lisa, Madeleine Plötz e Carsten Krischek. "Alternative Curing Methods". Current Clinical Microbiology Reports 8, n. 2 (13 marzo 2021): 40–48. http://dx.doi.org/10.1007/s40588-021-00164-w.

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Abstract Purpose of Review Curing—the treatment of meat products with nitrite and nitrate—is controversially discussed by consumers, as increased consumption of cured foods might negatively influence human health. Recent Findings However, omitting of curing chemicals might reduce microbiological safety, thereby increasing the risk to consumer health. Also, besides the addition of nitrate/nitrite, meat products are additionally preserved within the hurdle principle by other methods such as chilling, ripening, or heating. Summary The present article focuses on the addition of plants/plant extracts or plasma-treated water as nitrate sources and the direct treatment of meat products with plasma for nitrate generation. With regard to color and microbial safety of cured meat products, which are relevant to the consumers, promising results were also obtained with the alternative curing methods. Nonetheless, it is doubtful to what extent these methods are viable alternatives, as the curing chemicals themselves and not their origin are problematic for consumer health.

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Brush, Barbara L., e Sue Fisher. "Curing versus Caring". Women's Review of Books 13, n. 1 (ottobre 1995): 26. http://dx.doi.org/10.2307/4022220.

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Chan, Eddie. "Curing Misconduct Malaise". CFA Institute Magazine 27, n. 4 (dicembre 2016): 60–61. http://dx.doi.org/10.2469/cfm.v27.n4.23.

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Clark, Andy. "Curing Cognitive Hiccups". Journal of Philosophy 104, n. 4 (2007): 163–92. http://dx.doi.org/10.5840/jphil2007104426.

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"Photo-Curing Schemes to Cure the Epoxy Resins and their Impacts on Curing Process". Journal of chemistry and applications 4, n. 1 (30 dicembre 2018): 01–05. http://dx.doi.org/10.13188/2380-5021.1000010.

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48

"Curing backache". Nursing Standard 2, n. 11 (12 dicembre 1987): 8. http://dx.doi.org/10.7748/ns.2.11.8.s19.

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"Curing symptoms". Nature 317, n. 6039 (ottobre 1985): 658. http://dx.doi.org/10.1038/317658a0.

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50

"Powerful curing". British Dental Journal 207, n. 9 (novembre 2009): 453. http://dx.doi.org/10.1038/sj.bdj.2009.1000.

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