Sr. Design Engineer, Heavy Civil Infrastructure, Larsen & Toubro Ltd1
Department of Geology, School of Physical Sciences, Sikkim University2
Department of Civil Engineering, The NorthCap University3
Department of Civil Engineering, Kumaraguru College of Technology4
The problem of acute scarcity of aggregate materials for building construction, pavements and rail ballast can be solved using soft rock materials (sedimentary rocks) which have sufficient strength and durability characteristics equivalent to hard rocks. But it is important to analyze the physico-mechanical behavior of rocks in detail before recommending them for any type of constructional works, as their properties are adversely affected if they are exposed to alkaline and acidic conditions for long durations. In the present study, Kota Sandstone, which is a widely available stone in the region of Rajasthan, India but not a preferred aggregate material due to strength and durability concerns, was analysed. Several physical and mechanical properties like porosity, compressive strength, tensile strength, ultrasonic pulse velocity and durability of Kota Sandstone was measured. The results indicated that under different soaking conditions, Kota Sandstone bears similar strength and durability characteristics as basalt which is of the hardest and most preferred aggregate material. The findings of the study may help construction industry to utilize the outcomes of the study and use Kota Sandstone as a preferred aggregate material and also reduce the expensive quarrying of hard rocks.
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