论文部分内容阅读
研究了硬硅钙石型硅酸钙保温材料活性料浆的反应过程与反应机理。实验表明，硬硅钙石活性料浆的形成要经过Ｃ－Ｓ－Ｈ凝胶及水化硅酸二钙形成阶段、托贝莫来石形成阶段和硬硅钙石形成阶段。实验还表明，加入超细活性的硅质原料，使用含少量ＳｉＯ２的生石灰，以及适当降低Ｃ／Ｓ值均能促进反应速度。其机理在于以上措施均能使料浆在反应前期迅速消耗掉游离的Ｃａ（ＯＨ）２，从而使石英颗粒表面形成松散的水化硅酸钙包裹层。
The reaction process and reaction mechanism of the active slurry of xonotlite-type calcium silicate insulation material were studied. The experiments show that the formation of the xonotlite active slurry should go through the formation of C-S-H gels and the formation of hydrated calcium silicates, the formation of melalesite and the formation of xonotlite. Experiments also showed that the addition of ultra-fine active siliceous raw materials, the use of quick lime containing a small amount of SiO2, and appropriate reduction in C/S values can all promote the reaction rate. The mechanism is that the above measures can enable the slurry to rapidly dissipate free Ca(OH)2 in the early stage of the reaction, thereby forming a loose hydrated calcium silicate coating on the surface of the quartz particles.