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Geotechnical and Geological Engineering

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16-03-2022 | Original Paper

Modification of the Natural Slake Test and Assessment of Slaking Behavior of a Shale from Malaysia Under Rainfall

Authors: Teck Yew Lai, Vera Hui Loo, Vun Ket Wong, Kwong Soon Wong

Published in: Geotechnical and Geological Engineering | Issue 6/2022

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Abstract

The durability of clay-bearing rocks has been a concern to the construction industry. Extensive research have been conducted to determine the durability of clay-bearing rocks in the laboratory. However, the influence of rainfall on the slaking of clay-bearing rocks in the tropical weather has not yet been studied quantitatively. This study was carried out at Miri, a city in Sarawak State of Malaysia. The average rainfall per year is between 3300 mm and 4600 mm while the humidity is ranging from 80 to 90%. The objective of this study is to assess how rainfall affects the slaking behavior of clay-bearing rocks mainly shale in this area. This research evaluated the suitability of natural slake test method to be used in the tropical climate. A new experiment setting and procedure of natural slake test are recommended. A total of 78 samples have been tested under 26 sets of rainfall events in a 24-h period. The results show that the slaking of shale in the study area is very susceptible to rainfall. When the rock samples are exposed to rainfall intensity of less than 2 mm/h, the slaking of samples were minimal. The slaking of samples become severe when rainfall intensity is higher than 2 mm/h.

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Title: Modification of the Natural Slake Test and Assessment of Slaking Behavior of a Shale from Malaysia Under Rainfall
Authors: Teck Yew Lai
Vera Hui Loo
Vun Ket Wong
Kwong Soon Wong
Publication date: 16-03-2022
Publisher: Springer International Publishing
Published in: Geotechnical and Geological Engineering / Issue 6/2022
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-022-02085-x

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