Review On Performance Evaluation and Analysis of Cement Stabilized Fly Ash–GBFS Mixes As A Highway Construction Material
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Abstract
Constructing an adequate network of pavements, especially in backward areas, is very important for the socio-economic development of the India. However, challenges are faced many times, while constructing roads in the areas with problematic soils or when the subgrade is having poor strength. In such cases, Subgrade improvement is a feasible and economic solution. Fly ash, lime and cement are the commonly used materials for ground improvement. Geosynthetics, Geotextiles and Geo-grids are also used nowadays in roads for subgrade improvement in pavement construction. On the other hand, the waste materials such as coconut coir, rice husk, marble dust, rubber shreds, plastic strips, flyash, etc. have emerged as a solution for subgrade improvement, besides solving the problem of disposal of these materials and consequential environmental issues. The present work has investigated the use of Flyash (waste material of coal based thermal power plants) in Subgrade Improvement and to evaluate the effects of mixing of various percentages of flyash on the Bearing Capacity of saturated and unsaturated soil by conducting California Bearing Ratio test on the Sandy soil of poor gradation.
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