Structural Applications of Self-Consolidating Concrete
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2010-03-01
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Edition:Final Report May 2006 to March 2010
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Abstract:An experimental research study was conducted at South Dakota State University to determine the feasibility of constructing precast and cast-in-place box culverts in South Dakota using self-consolidating concrete (SCC) made with local aggregates. The research included literature search and review, development of SCC mix designs utilizing South Dakota local aggregates, aggregate testing, material testing of both fresh and hardened SCC properties, development of SCC special provisions in coordination with SDDOT staff and industry representatives, and evaluation of constructability of SCC box culverts. The results show that, when properly sized and shaped, South Dakota local aggregates were suitable for producing SCC. All SCC mix designs considered in this study were found stable, under the laboratory conditions, by visual stability index and hardened visual stability index. The results also show that the compressive strength gain and the tensile and flexural strength characteristics of SCC are similar to those of conventional concrete. As part of this research, special provisions for the use of SCC in box culverts in South Dakota were developed. The Special Provisions were a collaborative effort between the researchers at SDSU, SDDOT, and members of the concrete industry. Visual inspection of four box culverts built partially with SCC demonstrated the ease of constructability and the feasibility of cast-in-place and precast SCC highway structures in South Dakota.
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