摘要
通过X射线衍射试验,分析了超细矿渣的细度、取代量及龄期对水泥水化的影响.试验结果表明:与基准浆体相比,掺入超细矿渣粉28 d龄期水化样中Ca(OH)2晶体的衍射峰强度急剧下降,且消耗Ca(OH)2晶体的数量与水化样龄期及超细矿渣粉取代量和细度密切相关.掺P1000超细矿渣粉(比表面积实测值1 885 m2/kg)水泥水化速度非常快,3 d时二次水化反应已基本完成,从3 d到60 d Ca(OH)2的含量变化不明显;而且随着矿渣细度的增加和矿渣粉比表面积的增大,其吸收Ca(OH)2晶体的能力增强.但随着水泥水化产物中Ca(OH)2晶体数量的减少,C3S和C2S等熟料矿物水化并未加快,这与一般规律不符,还需结合其他实验手段进一步分析.
The influence of the replacement ratio,fineness and age of superfine slag powder on the properties of cement paste was investigated by tests with XRD.The results showed that compared with the reference slurry,the diffraction peak intensity of the Ca（OH）2 crystal drops sharply in the 28-day hydrated cement sample blended with superfine slag powder,and that the consumed quantity of Ca（OH）2 is in close relation with the age of hydrated cement sample and the replaement ratio and fineness of the powder.The hydration rate of the cement paste with P1000 superfine slag powder（measured specific area：1 885 m2/kg） is so quick that the secondary hydration reaction can be completed basically just in 3 days.No significant change is found in Ca（OH）2 diffraction peak intensity in the period of 3-60 days.The hydrated cement＇s absorbability of Ca（OH）2 is enhanced with the increasing slag fineness and slag powder＇s specific area.However,the hydration processes of such clinkers as C2S and C3S are not shortened with the decreasing quantity of Ca（OH）2 crystal,which shows the inconsistancy with the general rules and the reason is to be investigated further with other testing means.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第9期1300-1303,共4页
Journal of Northeastern University(Natural Science)
基金
国家重点基础研究发展计划项目(2009CB623203)
国家自然科学基金重点资助项目(50739001)
国家自然科学基金资助项目(50878109)
国家"十一五"科技支撑计划项目(2007BAB27B03)
