Abstract
This study investigated the effects of expansive agent (EA) and shrinkage-reducing agent (SRA) on the mechanical and shrinkage properties of ultra-high-performance concrete. Along with a reference specimen, the work considered five different specimens with different ratios of SRA (1% and 2%), EA (5% and 7·5%) and a combination of 1% SRA and 7·5% EA. The test results revealed that compressive strength varied with the inclusion of SRA and EA, while tensile strength decreased according to the admixing of SRA and EA. The free shrinkage strain was obviously reduced by including SRA and EA, and the specimen with 7·5% EA showed the lowest shrinkage strain. The inner steel strain was also decreased by incorporating SRA and EA, and the specimen with a combination of 1% SRA and 7·5% EA exhibited the smallest strain even though it showed a larger free shrinkage strain than the specimen with 7·5% EA. Furthermore, the specimens with EA exhibited a decrease in steel strain after nearly 10 d due to the tensile creep effect.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
