【摘 要】
：
Cement hydration constitutes a complex process whereby mostly crystalline phases precipitate from an oversaturated solution.XRD and ESEM investigations reve
【机 构】
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Technische Universit(a)t München, Chair for Construction Chemistry, 85748 Garching, Germany
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
Cement hydration constitutes a complex process whereby mostly crystalline phases precipitate from an oversaturated solution.XRD and ESEM investigations reveal that ettringite, a prominent cement hydrate and the main anchoring phase for most concrete admixtures including superplasticizers, precipitates almost instantaneously (i.e.within 10 s) when cement gets in contact with water.Such early ettringite crystals exhibit lengths of several hundred nanometers and appear highly disordered.
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