Granular Subbase (GSB)Specifiion and construction ...
· 1 test per 400 cum2 to +1% of OMC: Aggregate Impact Value: IS 2720 (Part4) 1 test per source or as required <40%: Wet Aggregate Impact Value: IS 5640: As required (If WA > 2%) <40%: Liquid Limit : IS 2720 (Part5) 1 test per 400 cum <25%: Plasticity Index: IS 2720 (Part5) 1 test per 400 cum <6%: MDD OMC: IS 2720 (Part8) 1 test per 400 cum – CBR at 98% Dry Density: IS 2720 .