Authors : M. Al-Nasra, R. Abdulraziq, Y. Abouelnaga, A. AlMofleh, O. Ayub, M. Abdelsadig and O. Mohammed
Abstract: The one way ribbed slab is very common reinforced concrete slab. It considered one of the main structural element in reinforced concrete structures. The main function of these slabs is to carry surface loads efficiently and in many cases to provide higher insulation value. It is common practice to fill the spacing between the ribs with different lightweight materials including cavity concrete blocks and polystyrene foam. This study focused on the spacing between the ribs. The main objective is to study the effect of the ribs spacing on the performance of the one way reinforced concrete ribbed slabs. The other parameters are kept the same for all of the tested samples including the overall thickness, the concrete mix design and the embedded steel reinforcement. Five slabs were prepared and tested by one way flexural bending stress. Polystyrene foam blocks of variable width is used to fill the space between the ribs. The height of the polystyrene foam blocks is kept constant. Special fiber is added to the concrete mix design to improve the performance of the concrete. Parametric study is conducted relating the slab strength with many factors including the material cost and the overall slab weight.
M. Al-Nasra, R. Abdulraziq, Y. Abouelnaga, A. AlMofleh, O. Ayub, M. Abdelsadig and O. Mohammed, 2019. Investigating the Effect of the Ribs Spacing on the One Way Reinforced Concrete Ribbed Slab Strength. Journal of Engineering and Applied Sciences, 14: 5138-5142.