MARGINAL LATERITIC SOIL TREATED USING CERAMIC WASTE FOR RURAL ROAD APPLICATION

This research aims to improve lateritic soil from Chachoengsao province 82 km from Bangkok with ceramic wastes. Engineering properties of lateritic were tested that included liquid limit, plastic limit, specific gravity, and modified compaction, permeability, and Los Angeles abrasion tests. Sieve analysis and engineering properties of mixed materials were also conducted. The maximum dry density (Modified Proctor Density) and the optimum water content of the natural studied soil were 1.95 g/cm3 and 10% while the maximum MDD and OMC obtained from the specimen with lateritic soil: CM ratios of 90:10 are 2.23 kN/m3 and 8%, respectively. The lateritic soil was mixed with ceramic fragments of 3, 5, 7, 10, 15 and 20% by weight of dry soil. The results show that lateritic soil replaced by 10% ceramic fragment or the so-called proper blended samples exhibit the highest California Bearing Ratio (CBR) values and engineering properties conformed to the specification of Department of Rural Roads (DRR) of Thailand.