Improvement the compressibility in residual soils by using styrene butadiene rubber

الملخص EN

A new stabilizing agent was sophisticated to improve the geotechnical performance and applicability of residual soils.

The laboratory test includes specific gravity, sieve analysis and hydrometer test with consistency limits test to classify the used soils and standard compaction test with compressibility tests to evaluate the stabilizer effect on engineering soil properties.

Two types of soils MH and SM were mixed with various amount of polymer SBR (Styrene Butadiene Rubber) 2.5, 5, 7.5, 10, and 12.5 % by weight and compacted at the optimum moisture content (OMC) and maximum dry density (MDD).

The virgin soil and the stabilized samples were subjected to consolation test to determine their compressibility at different curing times 1,3,7,14,28 days.

The results of the test show that the SBR significantly improved the compressibility of residual soil.

Where the plasticity index decreasing in both soils used by 81% and 77% in MH and SM soil respectively.

While Increase in the pre-consolidation pressure (Pc) about 62.5% and 300% at MH and SM respectively.

The compression index (Cc ) decreases 256% and 200% at MH and SM soils respectively.

Curing time had an effect on all geotechnical soil properties were tested after 14 days curing