volborthite

Results show that the cement pastes with calcined gypsum had more Ca(OH)2, less chemically combined water and no ettringite in the first day of hydration in comparison with the cement pastes with gypsum.

结果表明:在水化龄期相同时,掺煅烧石膏水泥浆体中水化产物同掺二水石膏相比,Ca(OH)2生成量大;在1 d前无钙钒石(AFt)生成;结合水量在1 d前,前者高于后者,而1 d后则相反。

It takes use of the formation of ettringite.

主要研究利用某些工业废弃物(粉煤灰、矿渣等)和适量的无水石膏,基于钙钒石的形成而引起的膨胀势能,制备一种用于道路混凝土的收缩补偿水泥添加剂。