Effect of Addition of Pozzoplast as Additive on Local Soil Stabilization
The one most important technique used in construction especially in pavement and foundation is soil stabilization because it improves the engineering properties of soil such as durability, volume stability and strength. In this study the Pozzoplast, a processed siliceous (fly ash) is used as stabilizing agent for non-plastic soil collected from district Lahore Punjab. Preparation of soil sample was done by adding varying amount of Pozzoplast (5, 10, and 20% by weight). Basic properties of soil such as plasticity index, cohesion, angle of internal friction, optimum moisture content (OMC), unconfined compressive strength, maximum dry density (MDD) and shear strength were determined. All tests were carried out according to the provision of the relevant ASTM specifications. Test results showed that when fines increase, liquid limit, angle of internal friction and OMC increases and, MDD and cohesion decreases. Unconfined compressive strength also improved drastically. Detail research analysis shows that for the stabilization of non-plastic soil as well as high plastic soil, the appropriate amount of pozzoplast (processed fly ash) was observed to be 20% of soil by weight.