Experimental Investigation on Uniaxial Compressive Responses of Grouted Rock-Like Material
| Autor: | Z. Y. Ma, W. Q. Ma, T. X. Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Cement grout 0211 other engineering and technologies Soil Science Uniaxial compression Geology Rigidity (psychology) 02 engineering and technology 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Fracture propagation Degree (temperature) Architecture Geotechnical engineering Rock mass classification Elastic modulus 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Geotechnical and Geological Engineering. 38:2653-2662 |
| ISSN: | 1573-1529 0960-3182 |
| Popis: | The grouting rate and pre-damage degree of grouted rock mass always influence its macro-mechanical properties. In this paper, a series of experimental uniaxial compression tests of cubic rock-like specimens were conducted to investigate the influencing law of the grouting rate and pre-damage degree on the mechanical behaviors and failure characteristics of a grouted rock mass. The results show that the failure pattern of the grouted specimens is mainly dominated by splitting failure and the increasing grouting rate enhances the load-bearing performance and decreases the failure extent of the specimens. The peak strength values decrease with the increasing pre-damage degree of the specimens, and the relationship is approximately linear. Unlike the peak strength, the elastic modulus values form a parabola that increases with the increase of the pre-damage degree. The grouted specimens with a small pre-damage degree have little fracture propagation and better integrity. It is illustrated that an increased pre-damage degree of the grouted specimens causes more fissures. Fissures provide more space for grouting, and the increase in cement grout improves the rigidity of the specimens. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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