Results 171 to 180 of about 15,071 (234)
Durability and Microstructural Evolution of PVA-Fiber-Reinforced Concrete Under Coupled Sulfate Attack and Freeze-Thaw Conditions. [PDF]
Materials (Basel)Wu H, Shen C, Lv C, Sun Y, Qu S, Zhou X.
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Mechanisms of Durability Degradation in Recycled Fine Aggregate Concrete of Varying Strengths Induced by Chloride and Sulfate Dry-Wet Cycles. [PDF]
Materials (Basel)Chen C +5 more
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Cement and Concrete Research, 2001
Abstract Delayed ettringite formation (DEF) can damage concrete that has experienced a temperature above about 70°C. Claims that slow release of sulfate from the clinker can have a similar effect in concrete not thus heated are unsupported. Chemical and microstructural aspects of DEF are reviewed.
H.F.W Taylor, C Famy, K.L Scrivener
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Abstract Delayed ettringite formation (DEF) can damage concrete that has experienced a temperature above about 70°C. Claims that slow release of sulfate from the clinker can have a similar effect in concrete not thus heated are unsupported. Chemical and microstructural aspects of DEF are reviewed.
H.F.W Taylor, C Famy, K.L Scrivener
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Minerals explained 59: Ettringite
Geology Today, 2021Some minerals are of interest both in fundamental and applied sciences. This is especially the case for ettringite Ca6Al2(SO4)3(OH)12·26H2O (hexagonal). As a secondary mineral, it was described in 1874 in limestone xenoliths from the Eifel volcanic area in Germany.
Thiéry, Vincent, Rica, Brunilda
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Borate Substituted Ettringites
MRS Proceedings, 1992ABSTRACTThe setting of cement is adversely affected by soluble borates. To reduce interference, the extent to which borate can be insolubilized has been investigated. One specific mechanism of insolubilization is by inclusion into ettringite. Ettringite, Ca6Al2(SO4)3(OH)12·26H2O, is a normal and stable constituent of Portland cement. It has an open but
Csetenyi, Laszlo J., Glasser, F. P.
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Applied Mechanics and Materials, 2015
The exposure of cement to high concentration of sulphate anions for a prolonged time period can lead to the formation of secondary ettringite and thaumasite. The preparation of synthetic ettringite is described in this paper.
Jan Gemrich +3 more
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The exposure of cement to high concentration of sulphate anions for a prolonged time period can lead to the formation of secondary ettringite and thaumasite. The preparation of synthetic ettringite is described in this paper.
Jan Gemrich +3 more
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Crystal Structure of Ettringite
Nature, 1968ETTRINGITE (Ca6[Al(OH)6]2(SO4)3.26H2O) occurs as a natural mineral, and is technically important as a hydration product of Portland and supersulphated cements and in its use, as satin white, for coating paper. It forms hexagonal, prismatic crystals which in synthetic material are often highly elongated.
A. E. Moore, H. F. W. Taylor
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Natural specimen of triple solid solution ettringite–thaumasite–chromate-ettringite
Journal of Thermal Analysis and Calorimetry, 2013Three natural minerals of ettringite group were investigated by TG to refine their chemical composition. Two samples are ettringite Ca5.97Mg0.01Sr0.02Al1.99Cr0.01(SO4)3(OH)12·23.7H2O and bentorite Ca5.99Mg0.01Cr1.95Al0.01Si0.03(SO4)2.82·(CO3)0.20(OH)12·19.4H2O, but the third one Ca5.99Na0.01Al1.38Si0.62(SO4)2.49·(CrO4)0.36·(CO3)0.46(OH)12·15.8H2O has ...
V. A. Drebushchak +3 more
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