Experimental Study of the Effect of Cavities on the Load Capacity of Two-Way Reinforced Concrete Plates on Fixed Concrete Thickness Wahyu Mahendra Trias Atmadja1, Herman Parung2, Rita Irmawaty3 dan A.Arwin Amiruddin4
A.Arwin Amiruddin4
1Student of the Civil Engineering Doctoral Program, Hasanudin University.
Jalan Perintis Kemerdekaan KM-10, Tel: 081328013399, email:mahendrawahyu1975[at]gmail.com
2Professor., Department of Civil Engineering, Hasanuddin University.
Jalan Perintis Kemerdekaan KM-10, Tel: 0411-580505, email:parungteknikunhas[at]gmail.com
3Associate Prof., Departemen Teknik Sipil, Universitas Hasanuddin.
Jalan Perintis Kemerdekaan KM-10, Telp 08114619672, email: rita_irmaway[at]yahoo.co.id
4Assistant Prof., Department of Civil Engineering, Hasanuddin University.
Jalan Perintis Kemerdekaan KM-10, Tel: 082190423578, email: a.arwinamiruddin[at] yahoo.com
Abstract
The study aims to determine the effect of cavities on the load capacity of reinforced concrete slabs when compared to massive reinforced concrete slabs that have the same thickness, with the hope of reducing the structure^s weight and the use of concrete materials. The modified PVC pipes, as cavity formers, will be placed in the tensile area without reducing the flexural strength that is caused by the weak nature of concrete against tensile strength. The test is carried out on a full scale against 14 cm thick solid plates (PP-1), and hollow plates, which use modified PVC pipes (PB-2), with a cavity diameter of 7.6 cm that has the same thickness. The test uses joint supports on all four sides and the loading pattern is evenly distributed. All slabs are made, on the spot, of cast concrete with the same size and distance between the reinforcement. PVC hollow plate (PB-2) has the same effective thickness as solid plate but has 14% less concrete volume. The maximum load capacity on the solid plate (PP-1) is 522.66 kN and on the hollow plate (PB-2) is 444.33 kN. The melting capacity on the solid plate (PP-1) is 373,515 kN and on the hollow plate (PB-2) is 325,935 kN. Initial crack load capacity on the solid plate (PP-1) is 19.5 kN and on the hollow plate (PB-2) is 16.75 kN
