混凝土多孔砖砌体自由干燥收缩性能研究  

Experimental study on dry shrinkage deformation of concrete perforated brick masonry

作　　者：赵文兰[1] 刘立新[1] 毕苏萍[1] 蔡秀兰[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450002

出　　处：《四川建筑科学研究》2011年第5期228-231,共4页Sichuan Building Science

基　　金：河南省新型墙体材料专项基金(豫建墙2007-21)

摘　　要：混凝土多孔砖砌体在使用阶段的干燥收缩值对控制墙体的干燥收缩裂缝十分重要。对混凝土多孔砖砌体进行了连续217 d干燥收缩变形的试验研究,通过对其在标准养护和自然养护环境中收缩性能的研究,分析了环境温度、相对湿度及龄期对混凝土多孔砖砌体收缩变形的影响,并提出了考虑这些因素的混凝土多孔砖砌体收缩变形的估算公式。研究结果可为我国混凝土多孔砖砌体在工程中的应用提供参考依据。The value of drying shrinkage of concrete perforated brick masonry in service stage is very important to control drying shrinkage cracks in masonry wall.Based on the test results for the dry shrinkage deformation of concrete perforated brick masonry cured in standard environment and natural environment within 217 days,the main factors affecting the dry shrinkage deformation such as the ambient temperature,the relative humidity and the curing ages are discussed and analyzed.The formulas estimated the dry shrinkage deformation of concrete perforated brick masonry are suggested,and this may be as a reference for the application of concrete perforated brick masonry in engineering.

关 键 词：混凝土多孔砖 砌体 干燥收缩 变形 

分 类 号：TU522[建筑科学—建筑技术科学]