STABILIZATION OF MARGINAL LATERITIC SOIL BY ALKALI-ACTIVATED RECYCLE CONCRETE AND BAGGAGE ASH

Abstract

This research investigates the possibility of improving marginal lateritic soil by polymerization to be used as road material. The polymerization process uses bagasse ash (BA) and recycled concrete (RC) as a precursor and sodium alkali (NaOH) as an alkali activator, which is the process of using waste material for road material. The interested Variables of the improved soils are soil to the binder at 90:10, the ratio of RC to BA at 100:0, 70:25, 66:33, 50:50, 33:66, 25:75, and 0:100 NaOH concentration at eight molars, the unconfined compressive strength was tested at soaked, curing times at 7 and 28 days and varies water content at 0.8OWC, OWC, and 1.2OWC. The result found the highest strength at OWC ratio RC: BA at 25:75 (OWC = 737 kPa.) at 28 days. Therefore, it is possible to use improvement for road material.