Optimization of Dry-Cast Extruded Precast/Prestressed Hollow-Core Slabs Using CFRP Strands


Load resistance of hollow-core (HC) slabs is influenced by several factors. In the literature, the most influential ones among those found to be geometry of HC slabs and amount and distribution of the applied prestressing load during production. So, this research is aiming to simulate HC slab units under loading by means of numerical modeling using computer software. The numerical model will be verified using experimental results. Then, the software will be used to carry out a parametric study to find out the optimum cross section configuration providing the maximum ultimate capacity with the lightest weight. The test parameters include void shapes, dimensions, and strand distribution. However, some special applications of HC slabs in projects could require units not only strength efficiency but also immunity to corrosion or magnetic waves. As a result, this research will also investigate the use of carbon fiber reinforced polymer (CFRP) prestressing stands to replace steel. Outcome of the research will increase the efficiency of HC slab production and introduce innovative products that are more durable and suitable for special applications.

Mahmut Sami Celal
Faculty Supervisor: 
Dr. Ehab El-Salakawy