丙烯酸钙对水泥水化进程的影响  

Influence of Calcium Acrylate on The Hydration Process of Cement

作　　者：田磊[1] 王琦[1] 宋鹏[1] 温乐明[1] 王付兰[1] 

机构地区：[1]济南大学材料科学与工程学院山东省建筑材料制备与测试技术重点实验室,山东济南250022

出　　处：《济南大学学报（自然科学版）》2013年第4期373-377,共5页Journal of University of Jinan(Science and Technology)

基　　金：山东省自然科学基金(ZR2010EM057)

摘　　要：采用红外光谱测试、差热-热重(DTA-TG)分析和X射线衍射(XRD)测试等手段对水泥综合改性效果进行分析,研究丙烯酸钙对水泥水化热历程的影响。结果表明:丙烯酸钙促进早期钙矾石(AFt)的生成,促进硅酸三钙(C3S)的不断水解及水化期的放热速率;抑制AFt向单硫型水化硫铝酸钙(AFm)的转变,影响Ca(OH)2的成核和析出,导致3～24 h内Ca(OH)2的生成量减少;水化后期提高水泥浆体分散性和液相中Ca2+浓度,水化更充分。We chose better samples to test the heat of hydration,analyzed the samples by FTIR,DTA-TG and XRD to study the influence of calcium acrylate on the heat of hydration of cement.The results show that calcium acrylate can accelerate the formation of AFt,the hydrolysis and the velocity of heat of hydration of C3S,restrain the transformation of AFt into AFm,and influence the uncleation and precipitate of Ca(OH)2 which lead to decrease of formation of Ca(OH)2 in 3~24 hours;and that,in 3~7 days,calcium acrylate can influence the hydration of calcium silicate and the formation of gel structure,which makes the formation of Ca(OH)2,content of bound water and extent of hydration lower than those of blank sample,and latterly improve the dispersity of paste and the concentration of Ca2+ which make the hydration of cement sufficient.

关 键 词：丙烯酸钙 水泥水化进程 水泥水化热 

分 类 号：TU528[建筑科学—建筑技术科学]