Abstract
Fly ash is used to improve the properties of concrete in both fresh and hardened states. This study was focused on the characteristics of fly-ash-blended lean concrete mixes suitable for production of solid concrete blocks used for masonry walls and for non-structural applications. The influence of superplasticiser and low calcium fly ash on the workability of two lean concrete mixes was examined. Replacement of both cement and sand by up to 50% fly ash was attempted. The compressive strength and fly-ash content relationships for the two lean concrete mixes were obtained. Maximum compressive strength was obtained for 10% cement replacement and 40% sand replacement by fly ash. The strength increased by two to three times when compared with concrete without fly ash. Similar enhanced strength for masonry was also observed for blocks with fly ash. The maximum flexural bond strength of masonry was for masonry couplets using blocks having 10% cement replaced by fly ash. The study showed that addition of fly ash to lean concrete mixes significantly enhanced the strength of the concrete
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 callMore From: Proceedings of the Institution of Civil Engineers - Construction Materials
Disclaimer: 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.
