Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests
A series of experimental tests were conducted to investigate the effects of loading rate on the tensile strength of sandstone by using four test methods, including a direct tensile method and three typical Brazilian disc methods (plate loading, circular arc loading, and strip loading). The loading r...
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2019-01-01
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Series: | Advances in Civil Engineering |
Online Access: | http://dx.doi.org/10.1155/2019/6260351 |
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doaj-e46b8d2784ff4c7dad41becbec8ef7572020-11-25T02:47:36ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/62603516260351Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc TestsFengqiang Gong0Le Zhang1Shanyong Wang2School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaARC Centre of Excellence for Geotechnical Science and Engineering, Faculty of Engineering and Built Environment, The University of Newcastle, University Drive, Callaghan, NSW 2308, AustraliaA series of experimental tests were conducted to investigate the effects of loading rate on the tensile strength of sandstone by using four test methods, including a direct tensile method and three typical Brazilian disc methods (plate loading, circular arc loading, and strip loading). The loading rates used in these tests varied from 10−2 MPa/s to 100 MPa/s. The results show that the rate effects are clear for these test methods, and the tensile strength of sandstone will increase linearly with the logarithm of the loading rate. At the same loading rate, it is found that the tensile strengths of the sandstone specimens under plate loading and arc loading are relatively similar and are much greater than the direct tensile strength, while the tensile strength under strip loading is less than the direct strength. A comprehensive comparison suggested that the strip loading method can be adopted for the Brazilian disc test, while the obtained strength should be modified with a coefficient of 1.37 to obtain the direct tensile strength.http://dx.doi.org/10.1155/2019/6260351 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fengqiang Gong Le Zhang Shanyong Wang |
spellingShingle |
Fengqiang Gong Le Zhang Shanyong Wang Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests Advances in Civil Engineering |
author_facet |
Fengqiang Gong Le Zhang Shanyong Wang |
author_sort |
Fengqiang Gong |
title |
Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests |
title_short |
Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests |
title_full |
Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests |
title_fullStr |
Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests |
title_full_unstemmed |
Loading Rate Effect of Rock Material with the Direct Tensile and Three Brazilian Disc Tests |
title_sort |
loading rate effect of rock material with the direct tensile and three brazilian disc tests |
publisher |
Hindawi Limited |
series |
Advances in Civil Engineering |
issn |
1687-8086 1687-8094 |
publishDate |
2019-01-01 |
description |
A series of experimental tests were conducted to investigate the effects of loading rate on the tensile strength of sandstone by using four test methods, including a direct tensile method and three typical Brazilian disc methods (plate loading, circular arc loading, and strip loading). The loading rates used in these tests varied from 10−2 MPa/s to 100 MPa/s. The results show that the rate effects are clear for these test methods, and the tensile strength of sandstone will increase linearly with the logarithm of the loading rate. At the same loading rate, it is found that the tensile strengths of the sandstone specimens under plate loading and arc loading are relatively similar and are much greater than the direct tensile strength, while the tensile strength under strip loading is less than the direct strength. A comprehensive comparison suggested that the strip loading method can be adopted for the Brazilian disc test, while the obtained strength should be modified with a coefficient of 1.37 to obtain the direct tensile strength. |
url |
http://dx.doi.org/10.1155/2019/6260351 |
work_keys_str_mv |
AT fengqianggong loadingrateeffectofrockmaterialwiththedirecttensileandthreebraziliandisctests AT lezhang loadingrateeffectofrockmaterialwiththedirecttensileandthreebraziliandisctests AT shanyongwang loadingrateeffectofrockmaterialwiththedirecttensileandthreebraziliandisctests |
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1724752631858987008 |