新型预制自保温墙体力学性能影响因素研究  

Research on the influencing factors of mechanical properties of new prefabricated self-insulated walls

作　　者：董庆广 陈宁 陈昕 DONG Qingguang;CHEN Ning;CHEN Xin(Shanghai Research Institute of Building Science,Shanghai 201108,China;Shanghai Mengbricks Energy Saving Material Technology Co.Ltd.,Shanghai 200540,China)

机构地区：[1]上海市建筑科学研究院有限公司,上海201108 [2]上海萌砖节能材料科技有限公司,上海200540

出　　处：《新型建筑材料》2024年第7期6-9,共4页New Building Materials

基　　金：“十四五”国家重点研发计划项目(2023YFC3806300);上海市科委社发项目(22dz1203100)。

摘　　要：采用烧结淤泥多孔砖复合保温材料,通过拉接浇筑形成结构保温一体化预制自保温墙体。研究了砌筑砂浆种类、砌筑方式、灌孔和插筋数量对烧结淤泥多孔砖砌体力学性能的影响。结果表明:对于烧结淤泥多孔砖砌体,薄层砌筑砂浆通缝抗剪强度标准值为0.52 MPa,比普通砂浆砌筑提高了34%;标准砌筑方式比非标准砌筑方式的通缝抗剪强度提高了15%;烧结多孔砖孔内铺设2根或者3根增强钢筋并灌浆后,砌体平均抗剪强度由0.53 MPa分别提高至1.39、2.25 MPa,分别提高了162.26%和324.53%。3孔铺筋注浆试样的抗剪强度比2孔铺筋注浆试样的抗剪强度提高了61.8%。A structural insulation integrated prefabricated self-insulated wall is formed by pulling and pouring sintered silt brick composite insulation material.This paper investigates the effects of masonry mortar types,masonry methods,number of grouting holes and reinforcing bars on the mechanical properties of sintered silt porous brick masonry.The results show that for sintered filt porous brick masonry,the standard value of shear strength for thin-layer masonry mortar through joints is 0.52 MPa,which is 34%higher than that of ordinary mortar masonry.The shear strength of the standard masonry method has increased by 15%compared to the non-standard masonry method.After laying 2 or 3 reinforcing steel bars in the holes of sintered porous bricks and grouting,the average shear strength of the masonry increased from 0.53 MPa to 1.39 MPa and 2.25 MPa,respectively,with an increase of 162.26%and 324.53%,respectively.The shear strength of the 3-hole reinforced grouting specimen increased by 61.8%compared to the 2-hole reinforced grouting specimen.

关 键 词：自来水厂淤泥 烧结砖 砌体 力学性能 

分 类 号：TU522.3[建筑科学—建筑技术科学]