摘要
用化学纯原料在水热条件下合成了Ｃ／Ｓ比为１．０和１．３的二个水化硅酸钙样品，研究了水化硅酸钙在２００～８００℃温区脱水过程中发生的组成和结构的变化和其脱水相再水化。结果表明，在４００～８００℃范围内脱水的水化硅酸钙脱水相均具有胶凝性能：在较低温度下（４００℃）脱水的脱水相比表面极大，再水化时需水量很大，因而使其水化硬化体中具有丰富的孔网体系。本文为建立４００℃左右低温脱水的水化物脱水相（ＤｅｈｙｄｒａｔｅｄＨｙｄｒａｔｅｓＰｈａｓｅｓ简称ＤＨＰ）胶凝材料新体系提供了理论依据。
Two samples of CSH,with 1.0 and 1.3 C/S ratio respectively,were produced at hydrothermal condition using CR. material. Varieties of composition and structure of CSH dehydrated at the temperature of 400～800 ℃ and the hydration of dehydrated phases of CSH were studled.studied Results show that Dehydrated calcium silicate hydrates dehydrated at the temperature of 400-800 ℃ have cementitious property, The CSH dehydrated at the low temperature (400 ℃) with high specific surface has big water requirement and its hardened paste has a abundant porosity network system. The paper provides foundation for establishing a new kind of cementitious material study system based on dehydrated hydrates phases at low temperature (about 400℃).
