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Experimental Study on Tin Slag Polymer Concrete Strengthening under Compression with Metallic Material Confinement
Muhamad Soffi Manda1,2, Mohd Ruzaimi Mat Rejab1, Shukur Abu Hassan3,4
1Structural Performance Material Engineering (SUPREME), Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, Pekan 26600, Pahang, Malaysia.
Metallic confinement significantly enhances tin slag polymer concrete strength and ductility under compression. Mild steel tubes improved compressive strength by up to 122.74%, modifying failure modes and preventing sudden fracture.
Area of Science:
- Materials Science
- Civil Engineering
- Structural Engineering
Background:
- External strengthening of tin slag polymer concrete (TSPC) using fibre-reinforced plastic (FRP) has shown promise.
- The potential of metallic material confinement for TSPC strengthening remains unexplored.
Purpose of the Study:
- To experimentally investigate the compressive behavior of TSPC strengthened with metallic material confinement.
- To quantify the strength enhancement and analyze the failure modes of confined TSPC.
Main Methods:
- Machined mild steel tubes were used for partial and full confinement of TSPC short columns.
- Compression tests were conducted on unconfined and confined TSPC specimens.
- Stress-strain curves and failure modes were analyzed.
Main Results:
- Compressive strength increased from 59.19 MPa (unconfined) to 95.86 MPa (partial confinement) and 131.84 MPa (full confinement).
- Strength enhancement reached 61.95% (partial) and 122.74% (full) confinement.
- Metal confinement modified stress-strain curves, delaying strain softening and fracture, and promoting ductile failure modes (expansion/crushing).
Conclusions:
- Metallic material confinement effectively enhances the compressive strength of TSPC.
- Confinement modifies failure modes, increasing ductility and preventing brittle fracture.
- Further research, including numerical analysis, is recommended for structural material design.
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