The results indicate that the formation of calcium silicate hydrate is difficult at normal pressure.

针对铝酸钠溶液除硅过程，研究苛性比、碱浓度、配钙量、温度等对水合硅酸钙形成的影响规律。

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Synthesis condition and method of hexagonal calcium aluminate hydrate are described. The synthetic hexagonal calcium aluminate hydrate is characterized through chemical, TG-DTA and XRD analysis.

叙述了六方水合铝酸钙的合成条件和方法，并通过化学分析、TG - DTA分析和XRD分析对所合成的六方水合铝酸钙进行了表征。

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The study also shows that calcium silicate hydrate gel, analcite and hydrated calcium aluminosilicate are the major hydration products of the cement.

碱磷渣水泥的主要水化产物是水化硅酸钙、方沸石、水化硅铝酸钙。

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In particular one part of it - calcium silicate hydrate - refused all attempts to be analysed under an electron microscope or by nano-indentation.

BBC: By Ian Hardy