An expected increase in demand of aggregates due to the upcoming and ongoing projects of western ... more An expected increase in demand of aggregates due to the upcoming and ongoing projects of western route of CPEC, there is a need of establishing new sources of aggregate in Trans Indus Ranges of Pakistan. In this context, limestone of Middle Jurassic Samana Suk Formation exposed at Sheikh Budin Hill, Marwat Range was investigated and sampled to depict its suitability as aggregate for the construction of roads with help of geological and engineering testing. The studied samples exhibit the tolerable values of all standard engineering parameters including Loss Angeles Abrasion (21.8%), Aggregate Impact (15.68%), Soundness (2.35%), Specific Gravity (2.57), water absorption (0.67%), Aggregate Crushing Value (12.99%), stripping of bitumen (<5%), coating of bitumen (>95%), Flakiness index (9.36%) and Elongation index (10.77%) proposed by the different national and international agencies like AASHTO, ASTM, BS and NHA. Petrographic analysis revealed that there is trivial possibility of Alkali Aggregate Reaction like ASR and ACR. The results of geological and engineering parameters recommend limestone of Samana Suk Formation as suitable aggregate for the base course, sub base coarse, asphalt and cement concrete.
An expected increase in demand of aggregates due to the upcoming and ongoing projects of western ... more An expected increase in demand of aggregates due to the upcoming and ongoing projects of western route of CPEC, there is a need of establishing new sources of aggregate in Trans Indus Ranges of Pakistan. In this context, limestone of Middle Jurassic Samana Suk Formation exposed at Sheikh Budin Hill, Marwat Range was investigated and sampled to depict its suitability as aggregate for the construction of roads with help of geological and engineering testing. The studied samples exhibit the tolerable values of all standard engineering parameters including Loss Angeles Abrasion (21.8%), Aggregate Impact (15.68%), Soundness (2.35%), Specific Gravity (2.57), water absorption (0.67%), Aggregate Crushing Value (12.99%), stripping of bitumen (<5%), coating of bitumen (>95%), Flakiness index (9.36%) and Elongation index (10.77%) proposed by the different national and international agencies like AASHTO, ASTM, BS and NHA. Petrographic analysis revealed that there is trivial possibility of Alkali Aggregate Reaction like ASR and ACR. The results of geological and engineering parameters recommend limestone of Samana Suk Formation as suitable aggregate for the base course, sub base coarse, asphalt and cement concrete.
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