Published Paper Details:

Soil is one of the most abundant construction materials of the nature used from the base of the structure. Almost all type of construction is built with or upon the soil. The most important part of a road pavement is subgrade soil and its strength. If the sub grade is not enough good the whole structure will face failure such as cracks, then stabilization is normally needed. Sub grade is sometimes replaced with stronger soil material or stabilized so as to improve the strength. Increase in sub grade strength may lead to economy in the structural thicknesses of a pavement. Cement, fly ash, lime, fibers etc. are very commonly used for soil stabilization. The main objective of this experimental study is to improve the properties of the soil by adding bitumen emulsion. In this study, the whole laboratory work revolves around the basic properties of soil and its strength in terms of CBR. Besides the bitumen emulsion, stone dust and brick dust are a kind of solid waste materials that are generated from stone crushing industry and brick kilns respectively which are abundantly available. It is estimated that each crusher unit produce 15%-20% stone dust. Disposal of such wastes poses lots of geo- environmental problems such as landfill disposal problems, health and environmental hazards. The best way to eliminate these problems is to make use of such waste products. Keeping this in view a little crushed stone dust and brick kiln dust are added to provide better soil strength. It is observed that excellent soil strength results by using cationic bitumen emulsion (CMS) with little quantity of the above two waste products used as fillers. The appropriate mixing conditions for the soil with CMS Bitumen emulsion have been first attempted. The main objective of this experimental study is to improve the properties of the gravel soil by adding bitumen emulsion. An attempt has been made to use emulsion for improving the strength of gravel soil expressed in terms of CBR values which may prove to be economical. In this study, the whole laboratory work revolves around the basic properties of soil and its strength in terms of CBR. A little cement added to provide better soil strength. It is observed that excellent soil strength results by using cationic bitumen emulsion (CMS) with little quantity of cement used as filler. The appropriate mixing conditions for gravelly soil with CMS Bitumen emulsion have been first attempted. This is followed by deciding four particular material conditions to show the variation in dry density and CBR value to achieve the best possible strength properties of gravel soil.