粉煤灰加气混凝土砌体力学性能与节能效应分析  

Analysis on Mechanical Properties and Energy Saving Effect of Fly Ash Aerated Concrete Masonry

作　　者：张立伟 李向东 李鹏 郝纪战 ZHANG Liwei;LI Xiangdong;LI Peng;HAO Jizhan(China Construction Seventh Bureau Building Decoration Engineering Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]中建七局建筑装饰工程有限公司,河南郑州450003

出　　处：《粉煤灰综合利用》2020年第1期77-80,共4页Fly Ash Comprehensive Utilization

摘　　要：利用室内试验方法制备了粉煤灰加气混凝土砌块和砌体,分别测试了混凝土砌块的抗拉抗压强度和砌体的抗拉和抗剪强度,分析了砌体抗压和抗剪强度随砂浆厚度的变化规律。在此基础上,建立了粉煤灰加气混凝土砌体节能效应的FLAC 3D数值计算模型。研究表明:(1)粉煤灰加气混凝土砌块的抗拉压强度平均值分别为4.53 MPa和0.75MPa;(2)粉煤灰加气混凝土砌体的整体抗压和抗剪强度随砂浆厚度的增大而分别减小和增大;(3)粉煤灰加气混凝土砌体的平均传热系数小于普通灰砂砖砌体,且随砂浆厚度的增大而减小。The fly ash aerated concrete blocks were prepared by laboratory test.The tensile and compressive strength of the concrete blocks and the tensile and shear strength of the masonry were tested respectively.The variation rules of the compressive and shear strength of the masonry with mortar thickness were analyzed.Based on this,the FLAC 3D numerical calculation model of energy-saving effect of fly ash aerated concrete masonry is established.The results show that:(1)The average tensile and compressive strength of fly ash aerated concrete blocks are 4.53 MPa and 0.75 MPa respectively.(2)The overall compressive and shear strength of fly ash aerated concrete masonry decreases and increases with the increase of mortar thickness respectively.(3)The average heat transfer coefficient of fly ash aerated concrete masonry is lower than that of ordinary lime sand brick masonry,and decreases with the increase of mortar thickness.

关 键 词：粉煤灰 加气混凝土 力学性能 传热系数 

分 类 号：TU522.3[建筑科学—建筑技术科学]