阳离子乳化沥青对水泥水化及CA砂浆性能的影响  

The Influence of Cationic Asphalt Emulsion on Cement Hydration and Properties of CA Mortar

作　　者：李炜 朱文婷 施宇磊 洪锦祥 杨鼎宜[1,2] LI Wei;ZHU Wen-ting;SHI Yu-lei;HONG Jin-xiang;YANG Ding-yi(College of Civil Science and Engineering,Yangzhou University,Yangzhou 225127,China;Institute of Green Building Materials,Yangzhou University,Yangzhou 225127,China;Jiangsu SoBute New Materials Co.,Ltd.,Nanjing 211103,China)

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127 [2]扬州大学绿色建筑材料研究所,江苏扬州225127 [3]江苏苏博特新材料股份有限公司,江苏南京211103

出　　处：《混凝土与水泥制品》2020年第12期1-5,共5页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51708483);国家重点研发计划项目(2018YFD1101002);高性能土木工程材料国家重点实验室开放基金项目(2018CEM009);江苏省土木工程材料重点实验室开放基金项目(CM2018-11)。

摘　　要：通过力学性能、化学结合水、水化程度、Ca(OH)2含量、浆体密实度和孔结构等试验,研究了阳离子乳化沥青对水泥水化的影响。结果表明:随着乳化沥青与水泥的质量比(A/C)从0增加到0.45,水泥-乳化沥青(CA)砂浆的力学性能逐渐下降;化学结合水、水化程度和Ca(OH)2含量也随之降低;超声波速逐渐下降,浆体的孔径和累积孔体积逐渐增加,CA砂浆的水化产物减少。总之,阳离子乳化沥青抑制了水泥水化和微结构的形成。The influence of cationic asphalt emulsion on cement hydration was investigated by testing the mechanical properties,chemically bound water,hydration degree,content of calcium hydroxide,density of paste and the pore structure.The results show that with the increase of mass ratio of asphalt to cement(A/C)from 0 to 0.45,the compressive and flexural strength declines gradually.The content of chemically bound water,cement hydration degree and the formation of Ca(OH)2 also decreases.The velocity of ultrasonic wave of cement-asphalt mortar reduces,while the pore size and the cumulative pore volume of cement-asphalt paste increases gradually.The formation of cement hydration products of CA mortar reduces.All in all,the hydration of cement and the formation of microstructure are suppressed by cationic asphalt emulsion.

关 键 词：水泥 阳离子乳化沥青 水化 抑制 

分 类 号：TU528[建筑科学—建筑技术科学]