| Summary: | A comprehensive study of rock properties is crucial to investigate and characterize the behavior of rock when it undergoes multiple loading and stresses. The properties of rocks are heavily influenced by weathering grade and the composition of minerals which indicates the hardness, swelling potential and abrasiveness, therefore give an effect on the strength and the durability of rocks. The interaction between mineralogy and engineering properties are significantly important for the engineer to fully understand the behavior of mudrock for further application especially in Malaysia. Selected weathered mudrocks from Bukit Kukus Kedah, a part of Semanggol formation were characterized for physical, mechanical and mineral properties. The result shows the degree of weathering influenced the physical and mechanical properties of mudrock. The sample with low porosity and high density possessed highest slake durability index of 91.43%. X-Ray diffraction revealed two of the sample tested were consists of goethite and quartz. The sample presence with goethite is higher in durability compare to sample consists of quartz only due to the cementation effect and denser minerals. © Published under licence by IOP Publishing Ltd.
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