55 PCI Journal | March–April 2019 Using belitic calcium sulfoaluminate cement for precast, prestressed concrete beams Cameron D. Murray, Royce W. Floyd, and Christopher C. E. Ramseyer ■ ■ This paper explores the feasibility of using belitic calcium sulfoaluminate (BCSA) cement to produce precast, prestressed concrete beams. ■ ■ Four prestressed concrete beams were fabricated using BCSA cement, and the beam fabrication meth- od, prestressing strand transfer length and develop- ment length, prestress losses, and flexural and shear behavior were evaluated. ■ ■ The results show that BCSA cement can be used in precast, prestressed concrete beams to shorten cur- ing times, reduce prestress losses, and provide dura- bility and sustainability benefits; however, additional research is needed to further investigate flexural and shear behavior. B elitic calcium sulfoaluminate (BCSA) cement is a fast-setting, hydraulic cement that can produce concrete with high early strength and excellent durability. While typical precast concrete producers will re- lease prestress at 18 to 24 hours, BCSA cement could allow prestress release in as little as two hours. Releasing pre- stress this quickly has the potential to improve the speed of producing precast, prestressed concrete members and reduce labor costs. Although this material has been in use for years, there is little to no published information about its structural performance in the United States. This study is an extension of a conference paper 1 and is one of the first documented uses of BCSA cement for precast, prestressed concrete in the United States. More information is needed on the structural performance of members produced with this material, but this work demonstrates the feasibility of BCSA cement in this application. This study focuses on the fabrication of BCSA cement concrete beams at a commercial precast concrete facility and the material properties, transfer length, development length, prestress losses, shear, and flexural performance of these beams. PCI Journal (ISSN 0887-9672) V. 64, No. 2, March–April 2019. PCI Journal is published bimonthly by the Precast/Prestressed Concrete Institute, 200 W. Adams St., Suite 2100, Chicago, IL 60606. Copyright © 2019, Precast/Prestressed Concrete Institute. The Precast/Prestressed Concrete Institute is not responsible for statements made by authors of papers in PCI Journal. Original manuscripts and discussion on published papers are accepted on review in accordance with the Precast/Prestressed Concrete Institute’s peer-review process. No payment is offered.
Using belitic calcium sulfoaluminate cement for precast, prestressed concrete beams
May 05, 2023
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