Effect of modified rubber powder on the mechanical properties of cement-based materials

doi:10.1016/j.jmrt.2022.06.070

CORC > 兰州理工大学 > 兰州理工大学

	Effect of modified rubber powder on the mechanical properties of cement-based materials
	Zhai, Shengtian 1; Liu, Cheng 1; Liu, Guojian 5; Pang, Bo 4; Zhang, Lihua 3; Liu, Zhiyong 1; Liu, Laibao 3; Zhang, Yunsheng 1,2
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2022
卷号	19 页码:4141-4153
关键词	Waste rubber powder Modification Floating Mechanical properties Interfacial bonding Rubber aggregate concrete
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2022.06.070
英文摘要	There are two common problems in the application of rubber aggregate concrete (RAC). One problem is that the rubber aggregate floats easily, which leads to a reduction in the workability of the mixture and delamination of the matrix. Another problem is that the mechanical properties of RAC are greatly reduced after hardening due to the poor inter-facial bonding between rubber and the cement matrix (R-C). In this study, a novel modi-fication method of waste rubber powder (WRP) combining mechanochemistry action, ultrasonic energy accumulation and the coating effect was proposed. The particle size distribution, specific surface area, hydrophilicity, morphology and structure of rubber were characterized by a laser particle size analyser, scanning electron microscopy (SEM), etc. The distribution of WRP in the cement-based materials was determined. The interfacial bonding and microstructure of R-C were analysed by SEM. The compressive and flexural strengths of cement-based materials with different contents of rubber were studied. The results showed that the R-C interface was significantly improved, and rubber particles were uniformly distributed in the cement mortar. The particle size of rubber particles showed a standard normal distribution, the surface cracks and pores were filled and coated, and the hydrophilic angle decreased from 94.6 & DEG; to 68.0 & DEG;. The cracks and voids of the R-C interface disappeared, and the compressive and flexural strengths of the mortar increased by 70% and 50%, respectively. The R-C interface and the distribution of rubber particles were found to play a major role in influencing the mechanical properties of RAC. (c) 2022 The Author(s). Published by Elsevier B.V.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000840991000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159857]
专题	兰州理工大学
作者单位	1.Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China 3.Southwest Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Environm friendly Energy Mat, Mianyang 621010, Peoples R China; 4.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China; 5.Suzhou Univ Sci & Technol, Sch Civil Engn, Suzhou 215009, Peoples R China;
推荐引用方式 GB/T 7714	Zhai, Shengtian,Liu, Cheng,Liu, Guojian,et al. Effect of modified rubber powder on the mechanical properties of cement-based materials[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,19:4141-4153.
APA	Zhai, Shengtian.,Liu, Cheng.,Liu, Guojian.,Pang, Bo.,Zhang, Lihua.,...&Zhang, Yunsheng.(2022).Effect of modified rubber powder on the mechanical properties of cement-based materials.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,19,4141-4153.
MLA	Zhai, Shengtian,et al."Effect of modified rubber powder on the mechanical properties of cement-based materials".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 19(2022):4141-4153.