Potential use of kelud volcano eruptive deposits, Indonesia as aggregates of Green structural lightweight concrete

The study presents the potential use of Kelud volcano eruptive deposits, Indonesia which includes river sand as fine aggregate, pumice well scoria coarse aggregate green structural lightweight concretes. Their physical properties were experimentally tested and compared with controls that commonly used in region. Furthermore, they applied on concretes designed for five determined compressive strengths normalweight concrete a control. fresh hardened mechanical also investigated experimentally. Precast slab units both their application evaluated maximum bending capacity, stiffness self-weight then to results stated sand, fulfilled requirements concrete. obtained approximately 30 MPa density reductions about 22%. For similar strength, capacities precast quite high self-weights at 28 days 85% lower than However, stiffnesses control so deflections must be considered design.