Rheological Characteristics of Cement Grout and its Effect on Mechanical Properties of a Rock Fracture

doi:10.1007/s00603-017-1340-x

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	Rheological Characteristics of Cement Grout and its Effect on Mechanical Properties of a Rock Fracture
	Peng, Xingxin 2,4; Lei, Guangfeng 2,4; Liu, Quansheng 2,3; Wei, Lai 2,4; Lu, Chaobo 1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2018
卷号	51 期号:2 页码:613-625
关键词	Rheological properties Water-cement ratio Fractured rock mass Mechanical properties Grouting reinforcement
ISSN号	0723-2632
DOI	10.1007/s00603-017-1340-x
英文摘要	Grouting reinforcement, which has an obvious strengthening effect on fractured rock mass, has been widely used in various fields in geotechnical engineering. The rheological properties of grout will greatly affect its diffusion radius in rock fractures, and the water-cement ratio is an important factor in determining the grouting flow patterns. The relationship between shear stress and shear rate which could reflect the grout rheological properties, the effects of water-cement ratio, and temperature on the rheological properties of grouting was studied in the laboratory. Besides, a new method for producing fractured rock specimens was proposed and solved the problem of producing natural fractured rock specimens. To investigate the influences of grouting on mechanical properties of a rock fracture, the fractured rock specimens made using the new method were reinforced by grouting on the independent designed grouting platform, and then normal and tangential mechanical tests were carried out on fractured rock specimens. The results showed that the mechanical properties of fractured rock mass are significantly improved by grouting, the peak shear strength and residual strength of rock fractures are greatly improved, and the resistance to deformation is enhanced after grouting. Normal forces affect the tangential behavior of the rock fracture, and the tangential stress strength increases with normal forces. The strength and stability of fractured rock mass are increased by grouting reinforcement.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000426074300016
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4221]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Guangxi Transportat Res Inst 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov ; 4.Univ Chinese Acad Sci ;
推荐引用方式 GB/T 7714	Peng, Xingxin,Lei, Guangfeng,Liu, Quansheng,et al. Rheological Characteristics of Cement Grout and its Effect on Mechanical Properties of a Rock Fracture[J]. ROCK MECHANICS AND ROCK ENGINEERING,2018,51(2):613-625.
APA	Peng, Xingxin,Lei, Guangfeng,Liu, Quansheng,Wei, Lai,&Lu, Chaobo.(2018).Rheological Characteristics of Cement Grout and its Effect on Mechanical Properties of a Rock Fracture.ROCK MECHANICS AND ROCK ENGINEERING,51(2),613-625.
MLA	Peng, Xingxin,et al."Rheological Characteristics of Cement Grout and its Effect on Mechanical Properties of a Rock Fracture".ROCK MECHANICS AND ROCK ENGINEERING 51.2(2018):613-625.