Comparative Study on Bearing Capacity on Alkaline Activated and Non-Activated Juliflora Ash in Black Cotton Soil

Abstract

Due to modernization, lots of villages become big cities. As a results available portable water becoming a major issue all over the world. Prosopis juliflora is a biological nightmare species, which is having lots of negative effects to the environment. Due to high release of CO2 and higher amount of water absorption through its roots results global warming and drought. So as to use this species into a useful manner to reduce these effects. In this research work bearing capacity of black cotton soil was compared with the addition of different materials. Prosopis juliflora ash is one of the materials which is used to improving the bearing capacity of soil. An experiment has been made to study on improving bearing capacity of black cotton soil by using Prosopis juliflora ash and alkaline activators. Sodium hydroxide and sodium silicate are used as alkaline activators for the stabilization of black cotton soil. Adding Prosopis juliflora ash in soil replacing soil with ash at 15% and 18%, to determine the optimal replacement level and 10% alkaline activators also added to soil sample to check the difference in bearing capacity of black cotton soil. For this research, molarity of sodium hydroxide is fixed as 8M. The results are compared with the soil sample without adding Prosopis juliflora ash and alkaline activators. The results show that, the maximum unconfined compressive strength as well as bearing capacity was found to be at 15% prosopis juliflora ash with alkaline activators. Maximum unconfined compressive strength was obtained as 377kPa. Cured soil specimens having high bearing capacity than those of the soaked and unsoaked specimens.