硅酸钙-植物纤维EPS复合墙板抗冻性能试验研究  

Experimental Study on Frost Resistance of Calcium Silicate-plant Fiber EPS Composite Wallboard

作　　者：胡恩金 王秀丽[2,3] 徐梓轩 侯鸿杰 吴征 潘旭斌 HU En-jin;WANG Xiu-li;XU Zi-xuan;HOU Hong-jie;WU Zheng;PAN Xu-bin(Gansu Construction Investment Civil Engineering Construction Group Co.,Ltd.,Lanzhou,Gansu,730070,China;School of Civil Engineering,Lanzhou University of Technology,Lanzhou,Gansu,730050,China;Western Center of Disaster Mitigation of Ministry of Education,Lanzhou,Gansu,730050,China)

机构地区：[1]甘肃建投土木工程建设集团有限责任公司,甘肃兰州730070 [2]兰州理工大学土木工程学院,甘肃兰州730050 [3]西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《建材技术与应用》2023年第3期19-23,共5页Research and Application of Building Materials

基　　金：国家重点研发计划(2019YFD1101004);甘肃省建设科技攻关项目(JK2020-26);兰州市科技项目(2020-2-4)。

摘　　要：通过不同质量分数的稻草纤维与聚苯乙烯泡沫(EPS)颗粒复掺试验,研究二者掺量对经历30次标准冻融循环之后的EPS水泥基复合材料质量、抗压强度、抗折强度和劈裂抗拉强度的影响。结果表明:在30次冻融循环之后,复合材料的质量、抗压强度、抗折强度及劈裂抗拉强度均有不同程度的下降,其中质量损失率随着纤维掺量的增加而降低,质量损失率在EPS掺量为1.1%、纤维掺量为0时达到最大,为3.87%。力学性能的损失率随着纤维掺量的增加而增加,其中抗折强度以及劈裂抗拉强度的损失率均明显高于抗压强度损失率。抗压强度、抗折强度以及劈裂抗拉强度的最大损失率分别为1.415%、3.991%和4.790%。研究结果表明,此类板材具有较好的抗冻性能。The impact of varying mass fractions of straw fiber and polystyrene foam(EPS)particles on the weight,compressive strength,flexural strength,and splitting tensile strength of EPS cement-based composites following 30 standard freeze-thaw cycles was investigated.The results show that after 30 freeze-thaw cycles,the quality,compressive strength,flexural strength and splitting tensile strength of the composite decrease in varying degrees,and the mass loss rate decreases with the increase of fiber content.The mass loss rate reaches the maximum of 3.87%when EPS content is 1.1%and fiber content is 0.The loss rate of mechanical properties increases with the increase of fiber content,and the loss rate of flexural strength and splitting tensile strength is significantly higher than the loss rate of compressive strength.The maximum loss rates of compressive strength,flexural strength and splitting tensile strength are 1.415%,3.991%and 4.79%respectively.The results show that this kind of sheet has better frost resistance.

关 键 词：植物纤维 硅酸钙板 EPS水泥基复合材料 抗冻性能 微观结构 

分 类 号：TU551[建筑科学—建筑技术科学]