Abstract
Self-Compacting Concrete (SCC) reduces environmental noise and has more workability. This research presents an investigation of the behavior of SCC under mechanical loading (impact loading). Two types of cement have been used to produce SCC mixtures, Ordinary Portland Cement (OPC) and Portland Limestone Cement (PLC), which reduces the emission of carbon dioxide during the manufacturing process. The mixes were reinforced with Carbon Fiber Reinforced Polymer (CFRP) which is usually used to improve the seismic performance of masonry walls, to replace lost steel reinforcements, or to increase column strength and ductility. Workability tests were carried out for fresh SCC. Prepared concrete slabs of 500×500×50mm were tested for low-velocity impact loading at ages of 28, 56, and 90 days after water curing. The results were compared with the ones of non-reinforced SCC mixes and show a significant effect on the impact resistance after the SCC was reinforced with CFRP. The strongest impact resistance was recorded for reinforcing slabs made from OPC SCC, while for the reinforced concrete slabs produced from PLC the results were less, but at a close rate.
Highlights
Self-Compacted Concrete (SCC) is a kind of concrete that is cast without being compacted and fills the formwork with its own weight
Reinforcement of SCC improves the impact resistance because the carbon fiber reinforced with polymer used in this research has good mechanical properties to curb cracking and absorb high energy when withdrawn from the concrete, which makes the reinforced slabs to have high strength and flexibility www.etasr.com and makes them capable of withstanding external shocks better than SCC without reinforcement
Carbon fibers can be used for reinforcement and consolidation and they show high impact resistance
Summary
Self-Compacted Concrete (SCC) is a kind of concrete that is cast without being compacted and fills the formwork with its own weight. A visible interface can guarantee that stress is effectively transmitted from the weaker matrix to the stronger fiber, reducing stress concentrations and improving the overall mechanical characteristics [6]. Throughout their functioning lives, many structures or structural parts are likely to be subjected to impact forces or even repeated impacts. Impact forces apply short-term dynamic loads to the material, subjecting it to unusual and unwanted stresses, in brittle materials such as concrete. This type of loading necessitates improved microstructural performance in order to be efficiently absorbed. The drop-weight, projectile impact Charpy pendulum, and the explosive and Repeated Blows Drop-Weight Impact (RBDWI) tests are among them [7]
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