【摘要】 本文研究了一种新型的复合早强减水剂并试验了它在火山灰水泥中的使用效果。这种复合早强减水剂由一种非萘系减水剂AP与适量的无机盐组成,它的掺入,不仅可使水泥凝结时间正常,而且在水泥砂浆流动度相同的条件下,早期强度也有较大的提高。此外,本文还借助于XRD,DTA,TG,SEM等测试手段对复合早强减水剂的作用机理作了初步探讨。更多还原

【Abstract】 The effects of a new complex water reducing accelerator onpozzolanic portland cement(PPC)blended with calcinated tuff havebeen studied.The accelerator is made of a non-naphthalene waterreducer AP and a suitable amount of inorganic salt.By mixing APand an inorganic salt with a proper proportion,the normal settingtime of paste can be got and the early strength on mortar preparedunder the same workability can be immensely inereased.The detecting methods of XRD,DTA,TG,SEM etc have alsobeen used for the investigation on the hydration mechanism of PPCwith the new accelerator.更多还原