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一、掺活性混合材的影响把粉煤灰、谷壳灰、粒化高炉矿渣等活性混合材分别掺入普通水泥中,可明显改善水泥石的渗透性。掺入符合要求的粉煤灰,有利于改善水泥浆体的和易性,使搅拌、捣实成型时带入水泥浆的空气减少,形成串通的毛细孔隙的几率减小。更主要的是,粉煤灰中的活性组分在过饱和Ca(OH)_2溶液中会进行水化反应,水化产物主要是C—S—H凝胶,还有少量钙矾石。这种水化反应较缓慢,往往需一个月或几个月,而且与环境养护条件有
First, the impact of mixed active materials The fly ash, husk ash, granulated blast furnace slag and other active mixes were incorporated into ordinary cement, can significantly improve the permeability of cement stone. The incorporation of fly ash that meets the requirements is conducive to improving the workability of the cement paste, reducing the air that is brought into the cement slurry during mixing and tamping, and reducing the chance of colporating capillary pores. More importantly, the active components in fly ash will undergo hydration reaction in supersaturated Ca(OH) 2 solution. The hydration products are mainly C-S-H gels, and a small amount of ettringite. This hydration reaction is relatively slow, often takes a month or months, and there are