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TitleEco-efficient ultra-high performance concrete development by means of response surface methodology
Author(s)Ferdosian, Iman
Camões, Aires
KeywordsCost efficient
Short-fiber composite
Statistical mixture design
Ultra-fine fly ash
Issue date2017
JournalCement and Concrete Composites
CitationFerdosian I., Camões A. Eco-efficient Ultra-high Performance Concrete Development by Means of Response Surface Methodology, Cement and Concrete Composites, Vol. 84, pp. 146-156, doi:10.1016/j.cemconcomp.2017.08.019, 2017
Abstract(s)The research described in this paper represents a statistically based model with the help of response surface methodology (RSM) aiming to study the applicability of this method to ultra-high performance concrete (UHPC) mixture design and its optimization. Besides, the effects of silica fume, ultra-fine fly ash (UFFA) and sand as three main variable constituents of UHPC on workability and compressive strength as the main performance criteria and responses of this high-tech material were investigated. The models proposed here demonstrate a perfect correlation among variables and responses. Furthermore, through performing a multi-objective optimization, cement and silica fume, as two main constituents of UHPC affecting its eco-efficiency and cost, were substituted by UFFA and sand as much as possible. Finally, an eco-efficient UHPC with cement and silica fume content of 640 kg/m3 and 56.3 kg/m3 respectively and compressive strength and flow diameter of 160.3 MPa and 19 cm was developed.
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AccessRestricted access (UMinho)
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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