摘要
用2种具有不同性质的苯丙乳液来研究聚合物对砂浆各种性能的影响,测量了不同聚合物掺量下,聚合物改性砂浆的流动性及力学性能。通过测量砂浆凝结硬化过程中绝热温升来研究聚合物对砂浆中水泥水化过程的影响。用扫描电子显微镜观察了聚合物改性砂浆的微观结构。结果表明:由于聚合物成膜及其与水泥水化产物的相互作用,砂浆的力学性能得到显著改善。聚合物的性质不同,对砂浆性能的影响作用不同。环境扫描电子显微镜对新拌水泥浆的原位观察证实了乳液聚合物粒子在水泥颗粒上的迅速吸附,为解释聚合物对新拌砂浆流动性能的改善以及对水泥水化的延滞作用提供了直接证据。
Two polymer latexes were employed to investigate the impacts of polymer on various properties of polymer modified mor- tars.With varied polymer additions,the mechanical properties of mortars as well as their slumps in the flesh state were measured. Semi-adiabatic temperatures of mortar during setting were monitored to study the influences of polymer latexes on the hydration process of cement.Scanning electron microscopy was used to observe the microstructure of fresh and hardened mortars.It is clearly indic...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2009年第1期107-114,共8页
Journal of The Chinese Ceramic Society
基金
“十一五”国家科技支撑计划(2006BAJ05B03)
自然科学基金(50802050)资助项目。
关键词
聚合物改性砂浆
力学性能
水泥水化
微观结构
玻璃化温度
苯丙乳液
polymer modified mortar
mechanical properties
cement hydration
microstructure
glass transition temperature
acrylate latexes
