PP纤维对疏水性水泥-矿渣复合材料性能的影响  

Effect of PP fibers on the performance of hydrophobic cement-slag composites

作　　者：沈霁 姚力豪 王彦平 张仲杰 王文彬 陈康泰 张印涛 Shen Ji;Yao Lihao;Wang Yanping;Zhang Zhongjie;Wang Wenbin;Che Kangtai;Zhang Yintao(School of Civil Engineering,Lanzhou Petrochemical University of Vocational,Lanzhou 730060;School of Materials Science and Engineering,Lanzhou Jiaotong University,Lanzhou 730070;School of Energy and Power Engineering,Lanzhou Petrochemical University of Vocational,Lanzhou 730060)

机构地区：[1]兰州石化职业技术大学土木工程学院,兰州730060 [2]兰州交通大学材料科学与工程学院,兰州730070 [3]兰州石化职业技术大学能源与动力工程学院,兰州730060

出　　处：《化工新型材料》2024年第S01期266-271,共6页New Chemical Materials

基　　金：甘肃省高校课程思政建设研究项目(GSkcsz-2021-076);甘肃省高校教师创新基金项目(2023A-213);大学生创新创业训练计划项目(S202316209016)。

摘　　要：在掺加聚二甲基硅氧烷制备具有疏水性的水泥-矿渣复合材料的基础上,通过掺加不同掺量聚丙烯(PP)纤维,研究对其力学性能、防水性能和耐久性的影响,发现PP纤维掺量为0.4%时,试样的韧性显著提高,28d抗折强度达到7.05MPa,相较于空白组提高了20.7%,同时抗硫酸盐侵蚀性能最佳。当PP纤维掺量为0.2%时,试样的吸水率降低了14.2%,同时抗冻融性能最佳。静态接触角测量结果表明,试样表面的静态接触角未受PP纤维的影响。In this paper,hydrophobic cement-slag composites were obtained by doping polydimethylsiloxane,and the effects of PP fibers on their mechanical properties,water resistance and durability were investigated.It was found that when the PP fiber doping was 0.4%,the toughness of the specimen was significantly improved,and the 28d flexural strength reached 7.05MPa,which was 20.7%higher than that of the blank group,and the resistance to sulfate erosion was the best.When the PP fiber doping was 0.2%,the water absorption of the specimen was reduced by 14.2%,and the best freeze-thaw resistance was achieved.The static contact angle measurements showed that the static contact angle of the specimen surface was not affected by the PP fiber.

关 键 词：矿渣 聚丙烯纤维 疏水性 耐久性 

分 类 号：TU526[建筑科学—建筑技术科学]