Engineered soil and the need for lime-natural pozzolan mixture percentage approximation

Abstract

The topic, engineered soil and the need for lime-natural pozzolan mixture percentage approximation is tried to be realized with the basic objective of initiating the identification of the percentage range for lime-natural pozzolan amender mixture approximation as in lime fixation for soil stabilization. The so far accomplished research sources were taken as bases of conceptual formulation. Amending of soil by using CaCO₃ and the abundantly available local natural pozzolan showed a success to develop a wall making input for rural housing development. In due course, arriving at an approximate percentage fixation remained a challenge because of the lengthy time required for laboratory material characterization and the cost incurred. In here, though for a specific soil type, a possible method of range approximation is suggested based on: pre-initial lime consumption, initial lime consumption, optimum lime-natural pozzolan consumption and post-optimum lime-natural pozzolan consumption. The outcome indicated the rough range of 4.5% to 9.5% for lime-natural pozzolan mixture application as shown in the omc and mdd vs. amender percentage line graph; reflecting a possible answer to the stated objective.