USE OF CEMENT KILN DUST AND RECRON 3S FIBRE TO IMPROVE THE STRENGTH PARAMETERS OF CLAYEY SOIL

Abstract

Soil is a natural material on the earth surface and all depends on the nature. As a civil engineer soil is very important part in any construction work, so firstly we need to check soil behaviour, its strength and bearing capacity of soil, that how much strength or capability to bear the structure load in the soil which is under construction. There are many types of soil and having different strengths and load bearing capacity. In this research we focused on to improve the strength parameters of clay soil by adding CKD and Recron-3s Fibre. We performed various tests on the soil to know its strength parameters such as Cement Kiln Dust as a stabilized material in soil with varying percentages 5%, 10%, 15%. Use of cement kiln dust for improving soil property is advantageous because they are cheap, locally available and eco-friendly. Soil samples for California Unconfined Compressive Strength (UCS) tests are prepared at its Maximum Dry Density (MDD) corresponding to its Optimum Moisture Content (OMC) in the UCS sampler without and with recron-3s fibre. The percentage of recron-3s fibre by dry weight of soil is taken as 0.75%, 1.0% and 1.5% and corresponding to each recron-3s fibre content soaked UCS tests are conducted in the laboratory. Adding of recron-3s fibre and Cement kiln dust results in less thickness of pavement due to increase in mix and reduce the cost of construction and hence economy of the construction of highway will be achieved.