AN EXPERIMENTAL STUDY TO DETERMINE THE COMPACTION CHARACTERISTICS AND CALIFORNIA BEARING RATIO OF SOIL MIXED WITH FLY ASH AND DISCRETE FIBRE

Expansive soils have the ability to swell and shrink, which causes lots of structural damages. In the present scenario, soil is stabilized using different waste materials in order to improve its strength. In this study, fly ash and fibers were mixed with soil to investigate the relative strength gain in terms of California bearing ratio tests. The effect of fly ash and fibre on geotechnical characteristics of soil – fly ash and soil-fly ash- fibre mixtures was investigated by conducting standard proctor compaction tests, CBR tests. The tests were performed as per Indian standard specifications. The soil used for the study was brought from Doultabad of Medak district. The physical properties of the soil were determined as per IS specifications. Fly ash for the study was brought from Raichur, Karnataka. An experimental study was carried out to determine the compaction characteristics and California bearing ratio of soil and fly ash mixed with discrete fibre of 12mm length. The results obtained from the study indicate that the addition of fly ash and fibre to soil increases the California bearing ratio values when compared to that of unreinforced soil.