الفهرس | Only 14 pages are availabe for public view |
Abstract Nowadays, ultra-high performance self-compacted concrete (UHPSCC) is a new type of concrete that has gained a lot of attention due to its superior compressivestrength and durability than normal concrete. in addition to overcome the cost ofpreparation of UHPC and reduce the environmental pollution, this study used recycled glass (GP) and lime (LP) powder as cement replacement materials in production of the UHPSCC. The flowability, mechanical and durability properties of UHPSCC mixes were investigated and structural performance of UHPSC columns with a typical cross section of 150×150 x1200 mm reinforced longitudinally and transversely with steel and basalt fiber reinforced polymer (BFRP) bars under were tested under axial monotonic loading. the influence of the type of the reinforcement (steel and basalt)and the volumetric ratio and spacing of the transverse reinforcement on the performance of the specimens were investigated. Also, a non-linear finite element analysis (NLFEA) using ANSYS Software ver. 14.5 was carried out to verify the behavior of UHPSC-BFRC reinforced concrete columns under centric loads. The fresh test results showed that the incorporation of GP and LP partially replaced of cement improved the flowability of UHPSCC. The compressive, tensile, and flexural strength were improved by increasing GP content to 20% replacement of cement by weight with maximum increase of 6.25% ,14.7% and 26.7% respectively at normal curing compared to the control mix. Also, use of these industrial wastes improved the durability properties which the mix UHPSCC 7 showed better values of water absorption and sorptivtiy with decrease level of 36.9% and 12.2% respectively compared to the control mix. Keywords: ultra-high-performance concrete, Basalt fiber reinforced polymer, limestone powder, glass powder. |