Soil stabilization by lime utilization

Since the black cotton soil is extremely weak in strength and highly expansive and contractive in nature. And lime which is in enormous quantum is available in Hyderabad Karnataka area where authors belong to. And it is very problematic for civil Engineers to construct structures over BC Soil. This has motivated the authors to do the study under consideration of soil stabilization by using lime. Typically, lime addition to expansive soils initiates four types of reactions between lime and the silicate/aluminates constituents of the expansive clay. These are flocculation, cat-ion exchange, carbonation and pozzolanic reaction. These reactions contribute to mineralogical and micro-structural changes in the treated or stabilized soils. Due to this reason, lime treated expansive soil behavior is significantly different from natural or untreated expansive soils. Added amount of lime had been varied in proportions of 1%, 2%, 3% and 4%. Use of lime in geotechnical engineering for enhancing the soil properties has received great attention in the recent times. This paper presents the investigation of behavior of pavement subgrade soil stabilized with lime. It is found that the 2% of lime content CBR test strength is showing highest result.