Comparison in Engineering Properties of Clay Soil Stabilized with Recycle Aggregate, Fly Ash, Cement, and Ground-Granulated Blast-Furnace Slag

Abstract

AbstractIn this study, effectiveness of using chemical stabilizers that are Class F fly ash, cement and ground-granulated blast furnace slag to stabilize the clayey soil with different combinations and proportions are investigated. Along with this suitability of recycled aggregates is also taken into consideration. Using recycled aggregates and replaced with soil is one way to minimiz concrete wastes. This study includes two soil samples, first clay and when clay gets replaced by 50% recycled aggregates. Two stabilizer blends were undertaken Class F fly ash + cement and Class F Fly ash + GGBS in both the soil samples to study their performance. Specimens prepared were subjected to Standard Proctor test and Unconfined Compression test. Test results indicate that with increase in fly ash + cement content, increases the OMC and decreases dry density, while with increase in fly ash + GGBS content, decreases the OMC and increases dry density. As the % binder increases, fly ash + cement shows much rise in UCS value as compared to fly ash + GGBS. Maximum UCS value was obtained in fly ash + cement with 20% binder content in 50% clay–50% RA soil mixture at 28th day.KeywordsSoil stabilizationStandard proctor testUnconfined compressive strengthGround granulated blast furnace slagRecycled aggregates