摘要
外方内圆偏心约束法是研究水泥基材料抗裂性能的有效方法,文中采用数值分析和试验分析验证了外方内圆偏心约束方法的底板摩擦力对净浆和砂浆收缩开裂影响的问题。结果表明,模具底板摩擦力的存在能够缩短水泥净浆或砂浆收缩的开裂时间,并且水灰比越大,具有底板摩擦力的试件开裂越快。
The outer square and inner circle eccentric constraint method is an effective way to study the anti-cracking performance of cement-based materials. For the question of friction in the testing proce- dures ,using ANSYS with theoretical numerical analysis, outer square and inner circle eccentric constraint method is used to verify friction＇ s effect on different water-cement ratio of cement paste and mortar. The results show that the presence of friction can reduce cement paste or mortar specimens with friction cracks quickly as the water-cement ratio increases. shrinkage cracking time, the
出处
《低温建筑技术》
2014年第1期4-7,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金项目(51078261)
关键词
摩擦力
收缩开裂
水泥净浆
砂浆
friction
shrinkage cracking
cement paste
mortar
