Theoretical investigation of reinforced reactive powder concrete two-way slabs subjected to impact force

• Main Authors: Majeed, S. H., Sayhood, E. K., Mohammed, N. S.
• Format: Conference Proceeding
• Language: English
• Subjects: Compressive strength; Concrete slabs; Falling; Falling bodies; Impact loads; Integral equations; Reinforced concrete; Ultra high performance concrete
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0148216

This paper investigates a mathematical study depending on the numerical approach Using the slab undamped vibration integral equation to compute slab’s central impact load and central deflection. Eight slab samples of reinforced concrete with dimensions (500x500 mm and 70 mm in thickness) were theoretically analyzed and discussed. The influence of mass, the effect of falling height, the effect of compressive strength, and the effect of reinforcement ratio in the tension zone were all investigated in this study. The established theoretical results are contrasted with the results of experimental tests. The test results showed that when the mass of a falling body decrease from 26 kg to 16 kg, The impact force were reduced by 20.18 % when using the full cracked section. On the other hand, using the formula of biggs showed a decrease of 22.44%. The utilization of reactive powder concrete has a significant influence on the performance of slabs subjected to drop weight, based on the fully cracked section of the slab G2 as compared with slab G1, an improvement of 2.28% was indicated. While utilizing the formula of biggs, showed an increased in impact force of 4.87%. Theoretically and experimentally findings were found to be in concordance. As can be seen, a numerical approach could accurately forecast the shock force of relatively large slabs of concrete.