Advanced Concrete Materials for Rapid Infrastructure Repair and Rehabilitation
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2025-01-01
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Edition:Final Report (September2023- December 2024)
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Abstract:This project demonstrates the use of belitic calcium sulfoaluminate (BCSA) cement in engineered cementitious composites (ECC) and measures the corrosion performance of BCSA cement concrete using ASTM G109. BCSA cement is a fast setting, fast strength gain, low shrinkage cement which can be mixed similarly to Portland cement (PC) but has significantly different performance. For infrastructure projects, demonstrating the properties of BCSA ECC could lead to its greater implementation in bridges and pavements while reducing impacts. One important consideration in infrastructure made with reinforced concrete is the protection of the embedded rebar from corrosion. ASTM G109 exposes reinforced concrete to a chloride solution and determines when corrosion of the embedded rebar initiates. In this study, BCSA cement concrete was compared to PC and several variables were altered to attempt to modify or improve the corrosion resistance of the BCSA mixtures. BCSA presented a good alternative or supplement to PC in ECC. BCSA cement improved the crack width of ECC and improved early age strength. In terms of corrosion, rebar in BCSA cement concrete samples was generally more prone to corrosion than in PC, but the mix design and preparation of the BCSA cement concrete can be altered to significantly improve its corrosion behavior.
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Main Document Checksum:urn:sha-512:56dc3da9d8065e1b85d0121500bf217151695ba9a80ea26ae0d983264495c73782be49576f350f79cca9dd0500354cd51c243f100b9b2638184769f80dc10d17
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