期刊论文

中文

新型建筑材料

1001-702X

2020

47

4

77-81

10.3969/j.issn.1001-702X.2020.04.019

湖北省技术创新重大项目(2017ABA155) 湖北省中央引导地方科技发展专项(2018ZYYD062)。

本校为第一机构

通过向再生骨料混凝土砌块中添加经不同种类硅烷偶联剂改性的农作物秸秆纤维,制备改性秸秆纤维增强再生骨料砌块,测试了再生骨料砌块的性能,并对试件进行SEM、XRD分析。结果表明,再生骨料砌块中的秸秆纤维用5%的KH560改性效果最优,添加10%经5%KH560改性的秸秆纤维制备再生骨料砌块28 d抗压强度较未改性时提高了102%。不同改性秸秆纤维的最佳掺量为5%KH550改性的秸秆纤维20%、5%KH560改性的秸秆纤维10%和2%KH570改性的秸秆纤维20%。

Modified straw fiber reinforced recycled aggregate blocks were prepared by adding crop straw fibers modified with different types of silane coupling agents to the recycled aggregate,the properties of the recycled aggregate blocks were tested,and the specimens were characterized by SEM and XRD.The results show that the straw fiber in the recycled aggregate block is best modified with 5% KH560,and the 28 d compressive strength of the recycled aggregate blocks prepared with 10% straw fiber modified by 5% KH560 was 102% higher than those of the unmodified fiber.The optimal dosage of different modi...