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contributor authorWeipei Xue
contributor authorZhishu Yao
contributor authorWei Jing
contributor authorHaiqing Song
date accessioned2022-01-30T20:48:36Z
date available2022-01-30T20:48:36Z
date issued1/1/2020 12:00:00 AM
identifier other%28ASCE%29MT.1943-5533.0002922.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4267157
description abstractIn order to investigate the effects of high pore-water pressure on the mechanical damage and failure behavior of mine shaft–lining concrete, specimens were immersed in a high-water-pressure container (up to 10 MPa) to form a high hydraulic gradient similar to that present in shaft-lining concrete in deep aquifers. The acoustic-wave velocity, strength, elastic modulus, and microcrack propagation were correlated through a mixed orthogonal experimental scheme in which the water pressure, exposure time, and concrete strength, were varied over 16 tests. The experimental results indicate that high pore-water pressure accelerates the damage process of shaft-lining concrete, resulting in increased modulus of elasticity, decreased peak strength with increasing water pressure and exposure time, and greater microcrack propagation in lower-strength-grade concrete (e.g., C60). In addition, most of the specimens failed by shear cracking. A damage evolution equation and constitutive model of shaft-lining concrete under uniaxial compression considering the effects of high pore pressure is established. The model shows good agreement with the experimental results.
publisherASCE
titleMechanical Damage and Failure Behavior of Shaft-Lining Concrete after Exposure to High Pore-Water Pressure
typeJournal Paper
journal volume32
journal issue1
journal titleJournal of Materials in Civil Engineering
identifier doi10.1061/(ASCE)MT.1943-5533.0002922
page11
treeJournal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 001
contenttypeFulltext


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