Publication: A correlation between impact strength index, slake durability index and uniaxial compressive strength of granite rocks at natm-4, Langat, Selangor
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Date
2012-06-01
Authors
Md Noh, Nor Arina Saadiah
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Abstract
In this study, the correlations of the three parameters of rocks were studied in relation to the construction of the Inter – State Raw Water Transfer (ISRWT) Project. Inter – State Raw Water Transfer (ISRWT) Project is designed to assist and convey raw water from the Semantan River through a transfer tunnel to the Selangor / Kuala Lumpur region for domestic and industrial uses to mitigate future water shortages since the water resources available within the Selangor / Kuala Lumpur. The study area was at NATM-4 Langat area. In order to study the mechanical properties of the granitic rocks and correlation between impact strength index, slake durability index and uniaxial compressive strength, rock samples were collected from 16 tunnel distances to conduct three tests which are impact strength test, slake durability test and uniaxial compressive strength test. During analysis, there are factors have been considered to the strength of rocks but the most consideration was on the weathering state. From the results obtained, the slightly weathered rocks resulted in high strength meanwhile the
highly weathered rocks show significantly low strength when it subjected to high impact loading, slake durability and uniaxial compressive force. In the experimental studies, it is also noticed that the correlation between these three tests are directly proportional. The impact strength index, slake durability index and uniaxial compressive strength are directly proportional to each other. So, as a recommendation, to study the strength or rocks, the physical testing also required because it is closely related to the mechanical properties of the rocks.