Study on Mechanical Properties of the Basalt Fiber-Rubber Granular Concrete under Triaxial Stress Condition and Its Application

doi:10.3390/app10238540

	Study on Mechanical Properties of the Basalt Fiber-Rubber Granular Concrete under Triaxial Stress Condition and Its Application
	Wu, Duohua 2,3; Li, Zhiwen 2,3; Li, Juli 1; Peng, Bo 2,3; Shen, Hui 2,3
刊名	APPLIED SCIENCES-BASEL
	2020-12-01
卷号	10 期号:23 页码:18
关键词	soft rock roadways failure features basalt fiber rubber granular compression tests strain-softening
DOI	10.3390/app10238540
英文摘要	To reduce the failure probability of rigid supporting structures caused by large deformation of deeply buried high-stress soft rock roadways, the mechanical properties and failure features of basalt fiber-rubber granular concrete (BFRGC) are investigated based on triaxial compression tests. The post-peak strain softening equations of BFRGC, based on the Mohr-Coulomb yield criterion, are deduced and then compiled in the finite-difference software (FLAC3D) to simulate the post-peak strain-softening process of BFRGC. Combined with practical engineering, the supporting effects of BFRGC with different proportions are evaluated by FLAC3D. The results of compression tests show that the yield strength of the BFRGC increases significantly when the mass percentage of basalt fiber is 0.4%. Moreover, mixing basalt fibers into both the plain concrete and rubber concrete can effectively restrain the development of the fractures under three-dimensional stress. The numerical results show that when the mass fractions of basalt fibers and rubber particles are 0.4% and 5-10%, respectively, both the plastic zone in the surrounding rocks and the deformation of the rigid supporting structures decrease obviously. It is indicated that the optimal ratio of BFRGC can effectively reduce the stress concentration around the roadway and improve the overall bearing capacity of the supporting structures.
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000597733400001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25290]
专题	中科院武汉岩土力学所
通讯作者	Wu, Duohua
作者单位	1.Shandong Transport Vocat Coll, Dept Traff Engn, Tai An 271000, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Geotech Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Duohua,Li, Zhiwen,Li, Juli,et al. Study on Mechanical Properties of the Basalt Fiber-Rubber Granular Concrete under Triaxial Stress Condition and Its Application[J]. APPLIED SCIENCES-BASEL,2020,10(23):18.
APA	Wu, Duohua,Li, Zhiwen,Li, Juli,Peng, Bo,&Shen, Hui.(2020).Study on Mechanical Properties of the Basalt Fiber-Rubber Granular Concrete under Triaxial Stress Condition and Its Application.APPLIED SCIENCES-BASEL,10(23),18.
MLA	Wu, Duohua,et al."Study on Mechanical Properties of the Basalt Fiber-Rubber Granular Concrete under Triaxial Stress Condition and Its Application".APPLIED SCIENCES-BASEL 10.23(2020):18.