高干缩水泥浆裂纹生成的力学分析  

Mechanics Analysis of Crack Formation in High-shrinkage Cement Paste

作　　者：尹财民 魏水平[2] 

机构地区：[1]四川华爰工程建设有限公司,四川成都610036 [2]四川理工学院建筑工程学院,四川自贡643000

出　　处：《黑龙江科技信息》2010年第27期303-304,37,共3页Heilongjiang Science and Technology Information

摘　　要：选用混合模型研究受单一骨料约束的高干缩水泥浆的裂纹特性,在骨料中粘结力约束的影响通过应力传感器的试验测定。建立力学模型,将测量值作为计算值,对模型随时间变化的高干缩水泥浆的裂纹扩展情况进行线弹性断裂力学分析。力学模型的计算结果和试验结果是一致的。A mix model has been used in the study of the fracture behavior of high-shrinkage cement paste constricted by a single aggregate. The effect of restraint on cohesive force in an aggregate has been determined experimentally with the use of a stress sensor. The Measured cohesive forces are used as input in a linear elastic fracture mechanical analysis modeling for time of crack growth in high-shrinkage cement paste. Results from calculations based on these models are compared with results from tests carried out on the growtb of cracks in high-shrinkage cement paste in a two-dimensional model.

关 键 词：水泥浆 干缩 粘结力 约束 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]