轻质高强蒸压加气混凝土的制备及性能研究  

Preparation and Properties of Lightweight High-StrengthAutoclaved Aerated Concrete

作　　者：李相国[1,2] 魏武 何超 蔡礼雄 吕阳[1] 但建明[2] LI Xiangguo;WEI Wu;HE Chao;CAI Lixiong;LYU Yang;DAN Jianming(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;School of Chemistry and Chemical Engineering,Shihezi University,Shihezi 832000,China;Huaxin Environmental Engineering Co,Wuhan 430075,China)

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]石河子大学化学化工学院,石河子832000 [3]华新环境工程有限公司,武汉430075

出　　处：《硅酸盐通报》2024年第7期2427-2433,共7页Bulletin of the Chinese Ceramic Society

基　　金：八师石河子市科技计划项目(2022GY01);兵团重点科技攻关计划(2023AB013-03)。

摘　　要：本文利用新疆地区粉煤灰和微硅粉等典型固废资源为原料,开展轻质高强蒸压加气混凝土制备技术研究,分析了原料配比、水料比和发气剂掺量对制品绝干密度和抗压强度的影响。结果表明,当m(粉煤灰)∶m(微硅粉)∶m(石英砂)∶m(生石灰)∶m(水泥)∶m(石膏)=30∶25∶10∶25∶8∶2、铝粉量为总物料质量的0.10%、水料比为0.58、蒸压温度为195℃、蒸压压力为1.2 MPa、蒸压时间为8 h时,轻质高强蒸压加气混凝土的绝干密度为568.70 kg/m^(3),抗压强度为5.4 MPa,导热系数为0.140 W/(m·K),达到了A5.0、B06等级。In this paper,the preparation technology of lightweight high-strength autoclaved aerated concrete was studied by using typical solid waste resources such as fly ash and micro silica powder in Xinjiang.The effects of raw material ratio,water to material ratio and gas-generating agent content on the absolute dry density and compressive strength of products were analyzed.The results show that when m(fly ash)∶m(micro silica powder)∶m(quartz sand)∶m(quicklime)∶m(cement)∶m(gypsum)is 30∶25∶10∶25∶8∶2,the amount of aluminum powder is 0.10%of total material mass,the water to material ratio is 0.58,the autoclave temperature is 195℃,the autoclave pressure is 1.2 MPa,and the autoclave time is 8 h,the absolute dry density of lightweight high-strength autoclaved aerated concrete is 568.70 kg/m^(3),the compressive strength is 5.4 MPa,and the thermal conductivity is 0.140 W/(m·K),reaching the level of A5.0,B06.

关 键 词：蒸压加气混凝土 粉煤灰 微硅粉 绝干密度 抗压强度 发气剂 

分 类 号：TU528.2[建筑科学—建筑技术科学]