SAP多孔水泥砂浆制备与静态力学性能研究  

Study on Preparation and Static Mechanical Properties of SAP Porous Cement Mortar

作　　者：杨东升[1] 邓勇军[1,2] 胡俊华 陈代果 YANG Dongsheng;DENG Yongjun;HU Junhua;CHEN Daiguo(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang,Sichuan 621000,China;Sichuan Provincial Key Lab of Shock and Vibration of Engineering Materials and Structures,Mianyang,Sichuan 621000,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621000 [2]工程材料与结构冲击振动四川省重点实验室,四川绵阳621000

出　　处：《施工技术（中英文）》2023年第9期119-125,共7页Construction Technology

基　　金：国家自然科学基金(12002293);四川省科技厅项目(2020YJ0423)。

摘　　要：以高分子吸水树脂(super absorbent polymers,SAP)作为成孔材料,代替发气剂制备多孔水泥砂浆。结合静态抗压试验,研究泥砂配合比、孔隙率及孔径对多孔水泥砂浆强度的影响规律。研究结果表明,泥砂配合比越大,含砂率越大,多孔水泥砂浆抗压强度越低;孔隙率越大,多孔水泥砂浆抗压强度越低,应力突变现象越来越不明显;孔径越小,多孔水泥砂浆越密实,抗压强度越高,但不易吸能。Porous cement mortar is prepared by using super absorbent polymers(SAP)instead of gas generator.Combined with the static compressive test,the influence of the mud-sand mix proportion,porosity and pore size on the strength of porous cement mortar is studied.The research results show that the larger the mud-sand mix proportion,the greater the sand content,the lower the compressive strength of porous cement mortar.The greater the porosity,the lower the compressive strength of porous cement mortar,the less obvious stress mutation.The smaller the pore size,the denser the porous cement mortar,the higher the compressive strength,but not easy to energy absorption.

关 键 词：水泥 砂浆 抗压强度 孔径 孔隙率 试验研究 

分 类 号：TU528[建筑科学—建筑技术科学]