Participants
Assoc. Prof. Omar Mohamed Omar – Dr. Nour Bassim FrahatCountry / City
EgyptFunding Authority
Self- FinancingImpact-resistant concrete is designed to withstand dynamic forces and heavy impacts, making it suitable for high-traffic areas and explosion-prone zones. This research aims to enhance the performance and sustainability of shock-resistant concrete by incorporating basalt and eco-friendly rubber plastic waste. A total of 22 concrete mixtures were tested with varying proportions of these materials. The base mix included 600 kg/m³ of cement, a 40:60 sand ratio, a water-to-cement ratio of 0.2%, along with 3% superplasticizer and 10% silica fume. The samples were divided into three groups: the first group used rubber in proportions ranging from 7.5% to 22.5%; the second group combined rubber with basalt at ratios between 25% and 75%; and the third group replaced rubber with popcorn. The results indicated that increasing rubber content reduced compressive and tensile strength while increasing deflection, leading to reduced stiffness. However, the inclusion of basalt significantly improved performance, with the best outcome observed in the mix containing 25% basalt and 7.5% rubber. Mixtures with popcorn and basalt exhibited superior flexural strength and stiffness, with the highest performance at 50% basalt and 15-22.5% popcorn. Plastic waste enhanced workability and improved compressive strength over time. The study concludes that incorporating basalt with waste materials achieves a balance between strength and stiffness, resulting in sustainable and efficient impact-resistant concrete.