Slamet Widodo, Iman Satyarno, Sri Tudjono
This research is aimed to observe and analyze the flexural behavior of composite concrete slab that constructed using Hybrid Fiber Reinforced Lightweight Concrete (HyFRLWC) for stay in-place (SIP) formwork then overlaid with self-compacting concrete (SCC) for topping layer. The study was focused to observe and evaluate the constructed one-way slabs whether its failure mainly caused by bending moment or interface failure between the two layer of concrete materials (HyFRLWC as the substrate layer with SCC topping) without any shear connector. The experiment was carried out with full-scale testing of the six composite concrete slabs. The slabs prepared in smooth substrate surface conditions (as-placed) and roughened in longitudinal direction and the bending test using two points loading was carried out on three full scale slabs for each variant. All slabs were made with dimensions of 800 mm in width, 3200 mm in length and 120 mm in thickness. Physical model tests and the stress analysis results showed the failure mainly caused by bending failure, and none of the specimens collapsed due to interface failure. SCC that casted as topping layer can adhere well to the HyFRLWC substrate and the composite slab is capable to act monolithically in dealing with flexural loads. © IAEME Publication.
Civil Engineering Department, Universitas Negeri Yogyakarta, Karangmalang, Yogyakarta, 50275, Indonesia; Civil Engineering Department, Gadjah Mada University, Bulaksumur, Yogyakarta, 55281, Indonesia; Civil Engineering Department, Diponegoro University, Tembalang, Semarang, 50275, Indonesia
