CBR laboratory investigation on Lightweight Modular Block (LMB) using recycled dredged soil mixed with EPS

Abstract Changing material into a lightweight geomaterial such as EPSCS is one of the considerable methods to improve geotechnical performance in field. This already used numerous construction projects due its light characteristics. Lightweight Modular Block or LMB type composed dredged Soil, cement, and Expanded Polystyrene (EPS). The amount cement composition are 3%, 5%,7% 9%. Meanwhile, (EPS) 0.5% 0.75%. paper aims briefly explain road foundation materials, subbase base, through CBR laboratory tests. Based on data, adding EPS can reduce density by 18% - 29% depending chosen mixture. Whereas more tends increase value. All test results will be analyzed compared SNI 03-3438-1994 for qualification layer.