Abstract
In this paper a test was performed on six reinforced concrete rectangular columns subjected to concentric loading up to failure. The material used in this investigation included normal concrete, NC, and reactive powder concrete, RPC. Two columns were cast as control specimens with NC and RPC. The remaining four were of hybrid combination having the NC in the centre and the RPC surrounded it. Variables investigated were the effect of steel fibre volumetric ratio, Vf, (0.5, 1 and 1.5) as well as the thickness of the external RPC part, (40 and 20) mm. The columns were of rectangular section having the dimensions of (100×200×740) mm.Data recorded included: crack and ultimate loads as well as the longitudinal and lateral strains. Experimental results indicated that the behaviour of the hybrid reinforced concrete columns were approaching that of the full RPC.
Highlights
INTRODUCTIONFor more than 20 decades, concrete was and still considered as the principal construction material
To decrease the production cost of these kinds of concrete, some scientist introduced the hybrid concrete, HC, by constructing structural elements cast monolithically from NC with other types of concrete such as HSC, reactive powder concrete (RPC) and self-compacting concrete, SCC. This production helped in improving the quality of NC construction into becoming more robust. [8, 9, 10, 11 and 12] HC structural elements should only be used in portions of the construction that are likely to be exposed to harsh environments, mainly to increase the strength of the structure without increasing its weight; such structural elements will be stronger and more economical than those cast with plain NC
This paper investigated the effect of steel fibre volumetric ratios and the thickness of the external RPC part on the failure load and toughness in short HC columns of rectangular sections
Summary
For more than 20 decades, concrete was and still considered as the principal construction material The development of this material is progressing, from normal concrete, NC, through high strength concrete, HSC, reaching to ultra-high-performance concrete (UHPC) referred to as reactive powder concrete (RPC). To decrease the production cost of these kinds of concrete, some scientist introduced the hybrid concrete, HC, by constructing structural elements cast monolithically from NC with other types of concrete such as HSC, RPC and self-compacting concrete, SCC. This production helped in improving the quality of NC construction into becoming more robust. This paper includes an experimental investigation on six reinforced concrete rectangular columns subjected to concentric loading until failure
Sign-in/Register to view highlights & summary 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.
