Material testing for soil, aggregate and asphalt being used in road construction of CPEC route along Pindi Gheb to Tarap, Punjab, Pakistan (P-1001) (MFN 6328)

Abstract

The study area is part of Potwar Basin. The study objectives consist of evaluation of material testing for soil, aggregate and asphalt being used in road construction of CPEC route along Pindi Gheb to Tarap, Punjab, Pakistan. During field investigation different test pits were excavated as per project’s specification along the purposed road alignment. Sub grade material falls in class A-1b. The liquid limit of sub grade material for soil testing is 24% while Plastic limit is 20%. The Plasticity Index (PI) is 4.0 % while above layers is non-plastic. The maximum dry density for sub grade is 2.632 gm/cc at moister content 10.2%. Using lab density CBR value was calculated for sub grade is 31.0%. The specific gravity for oven dry sample is 2.679 while apparent specific gravity is 2.725. The water absorption was 0.62%. The Sand Equivalent test shows the specific limit 75% Min. The Bitumen by weight of 3.55% and the compaction of Asphalt is 96%.