Determination of In-situ Field Density on Rock Fill Strata: Experimental Methodology

Backfilling is the process of replacing or reusing the soil that is removed during building construction to strengthen and support a structures foundation or any other structural member, in rocky terrain there is scarcity of borrow earth backfilling was done by filling with rocks to control the project cost. No codal provision is available for rockfill compaction testing against density, a methodology has been develop for compaction and density is calculated and in no case density should not be less than 1900 kg/cum. The aim of this paper is to crop out the issue of backfilling when project authorities deviate from specified item of backfilling given in schedule of quantities due to non-availability of borrow earth and no provision for compaction methodology and density measures is available in Indian Standard Codes.