Increasing the flexural strength of reinforced concrete slabs can be done by adding the slab's sufficient thickness (d). However, the addition will make the plate heavier. The plate weight can be reduced by replacing the amount of concrete in the tensile area with the hollow space formed from a modified PVC pipe. It is done without reducing the flexural strength as the concrete is weak to tensile strength. The study is conducted to determine the effect of the hole on reinforced concrete slabs on flexural strength, deflection, stiffness, and crack patterns.The research uses three specimens, consisting of a 12 cm solid plate and two PVC hollow plates,with a thickness of 12 cm and 14 cm each. All plates are made on a full scale with 12 cm x 160 cm x 220 cm. The loading method is an evenly distributed load that is increased until it reaches its maximum capacity. The test object pedestal system is all of the joint support along the edges. All plates are made of cast concrete in the same size and distance between the reinforcing bars. The holes on plates are made of PVC pipe with a diameter of 7.6 cm. The PVC I (IPL-2) hollow plate has the same effective thickness as a solid plate, but the concrete volume is 19% less. The PVC II (IPL-3) hollow plate is 14 cm thick with the same volume of concrete as a solid plate. The research is done by providing maximum load to find out the bending damage in each plate (IPL-1, IPL-2, and IPL-3) and the crack pattern.
Volume 12 | Issue 2
Pages: 3449-3456
DOI: 10.5373/JARDCS/V12I2/S20201466