摘要
主要研究了机械活化粉煤灰的颗粒分布和矿物成分的变化规律 。
An active β-C_2S has been synthesized by a new technique, i.e., a mixture of CaO andaerosil with CaO/SiO_2 ratio equaled to 2 was first subjected to hydrothermal treatment atabout 100℃ and then ignition at a temperature not higher then 850℃ without adding stab-lizer. The mineral obtained was identified by XRD, IR and OM, and confirmed to be in β-form.The results of identification was comparable to those of C_2S synthesized by conven-tional method, i.e. heating the mixture at higher temperture (1340℃). This β-C_2S obtained at lower temperature was very active. The harden paste showed asignificant strength at 3-days hydration.The compressive strength at 14-days hydration was10 times of that of the controlled β-C_2S.The contents of the combined water as well as theCa(OH)_2 released that determinated at various hydration periods showed once again thatthe hydration rate of β-C_2S obtained by the new technique is more rapid than the ordinaryβ-C_2S.
出处
《硅酸盐通报》
CAS
CSCD
2003年第2期73-76,共4页
Bulletin of the Chinese Ceramic Society
