Microcrack pattern propagations and rock quality designation of Batu Caves limestone
Microcrack pattern of limestone with various grade of natural weathering were studied to examine the microcrack initiation and propagations in relation to Rock Quality Designation (RQD) and shear strength parameters such as shear stress and normal stress. The degree of natural weathering were determ...
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Electronic Journal of Geotechnical Engineering
2011
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Online Access: | http://psasir.upm.edu.my/id/eprint/23224/ http://www.ejge.com/2011/Ppr11.045/Abs11.045.htm |
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my.upm.eprints.232242015-10-21T04:20:04Z http://psasir.upm.edu.my/id/eprint/23224/ Microcrack pattern propagations and rock quality designation of Batu Caves limestone Mohd Pauzi, Nur Irfah Omar, Husaini Kim Huat, Bujang Misran, Halina Md Yusoff, Zainuddin Microcrack pattern of limestone with various grade of natural weathering were studied to examine the microcrack initiation and propagations in relation to Rock Quality Designation (RQD) and shear strength parameters such as shear stress and normal stress. The degree of natural weathering were determined using Schmidt hammer test and it was found that as the weathering grade increased from grade I to grade IV, the microcrack length changed from ca. 500 μm to a longer length of ca. 800 μm. The increased in microcrack length were coupled with the increased in width of the cracks as observed using Scanning Electron Microscope (SEM). Furthermore, it was suggested that the microcrack length of limestone is inversely proportional to RQD value with confidence level of 60%. However, the microcrack length of limestone was observed to be directly proportional with shear stress and normal stress with confidence level of 95% and 99% respectively. Electronic Journal of Geotechnical Engineering 2011 Article PeerReviewed Mohd Pauzi, Nur Irfah and Omar, Husaini and Kim Huat, Bujang and Misran, Halina and Md Yusoff, Zainuddin (2011) Microcrack pattern propagations and rock quality designation of Batu Caves limestone. Electronic Journal of Geotechnical Engineering, 16 (bund. F). pp. 591-604. ISSN 1089-3032 http://www.ejge.com/2011/Ppr11.045/Abs11.045.htm |
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Microcrack pattern of limestone with various grade of natural weathering were studied to examine the microcrack initiation and propagations in relation to Rock Quality Designation (RQD) and shear strength parameters such as shear stress and normal stress. The degree of natural weathering were determined using Schmidt hammer test and it was found that as the weathering grade increased from
grade I to grade IV, the microcrack length changed from ca. 500 μm to a longer length of ca. 800 μm. The increased in microcrack length were coupled with the increased in width of the cracks as observed using Scanning Electron Microscope (SEM). Furthermore, it was suggested that the microcrack length of limestone is inversely proportional to RQD value with confidence level of 60%. However, the
microcrack length of limestone was observed to be directly proportional with shear stress and normal stress with confidence level of 95% and 99% respectively. |
format |
Article |
author |
Mohd Pauzi, Nur Irfah Omar, Husaini Kim Huat, Bujang Misran, Halina Md Yusoff, Zainuddin |
spellingShingle |
Mohd Pauzi, Nur Irfah Omar, Husaini Kim Huat, Bujang Misran, Halina Md Yusoff, Zainuddin Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
author_facet |
Mohd Pauzi, Nur Irfah Omar, Husaini Kim Huat, Bujang Misran, Halina Md Yusoff, Zainuddin |
author_sort |
Mohd Pauzi, Nur Irfah |
title |
Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
title_short |
Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
title_full |
Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
title_fullStr |
Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
title_full_unstemmed |
Microcrack pattern propagations and rock quality designation of Batu Caves limestone |
title_sort |
microcrack pattern propagations and rock quality designation of batu caves limestone |
publisher |
Electronic Journal of Geotechnical Engineering |
publishDate |
2011 |
url |
http://psasir.upm.edu.my/id/eprint/23224/ http://www.ejge.com/2011/Ppr11.045/Abs11.045.htm |
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1643827993839140864 |
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13.154949 |