Development and optimisation of green lightweight engineered cementitious composite containing industrial wastes using response surface methodology

Amirfakhrian, Seyedmahdi; Hosseini Mehrab, Alireza; Jafari, Mohammadreza; Esfahani, M. Reza

doi:10.1080/19648189.2024.2334838

European Journal of Environmental and Civil Engineering

2024

DOI: 10.1080/19648189.2024.2334838

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Development and optimisation of green lightweight engineered cementitious composite containing industrial wastes using response surface methodology

Seyedmahdi Amirfakhrian,

Alireza Hosseini Mehrab,

Mohammadreza Jafari

et al.

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Cited by 2 publications

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“…It is powerful technique for optimization of chemical reactions and engineering processes to evaluate the effect of SCMs in SCC development 22,23 . Several studies [24][25][26][27] have highlighted the efficacy of RSM in optimizing SCC formulations using different SCMs.…”

mentioning

confidence: 99%

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Aziz,

Mehboob,

Tayyab

et al. 2024

Sci Rep

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Within concrete engineering, the uptake of self-compacting concrete (SCC) represents a notable trend, delivering improved workability and placement efficiency. However, challenges persist, notably in achieving optimal performance while mitigating environmental impacts, particularly in cement consumption. However, simply reducing the cement content in the mix design can directly compromise the structural-concrete requirements. Towards these challenges, global trends emphasize the utilization of appropriate waste materials in blended concrete. This study explored a promising strategy by integrating supplementary cementitious materials (SCMs) to contribute to the United Nations' Sustainable Development Goals (SDGs) in addition to the engineering contributions. It suggests an optimal combination of Metakaolin (MK) and Limestone Powder (LP) to partially substitute cement. The research methodology employs the response surface method (RSM) to systematically explore the ideal ingredient ratios. Through a comprehensive analysis of orthogonal array of 16 mixes, encompassing both mixture and process variables, this study aims to explain the effects of MK and LP addition on the rheological and mechanical properties of SCC with varying cement replacement levels. In terms of mixture constituents, the total composition of cement, MK, and LP was fixed at 100%, while coarse aggregate (CA), fine aggregate (FA), and the water-to-binder ratio were held as process variables. In order to assess the rheological properties of the mix-design, various tests including slump flow, L-box, and sieve segregation were conducted. Additionally, to evaluate mechanical strength, samples were tested for compressive strength at both 7 and 28 days. Findings from the experiments reveal higher concentrations of MK result in reduced workability and hardened properties. Through RSM-based designed experimentation covering both rheological and mechanical aspects, it is observed that the optimal cement replacement level lies between 40 and 55%. The findings of this study contribute to the advancement of sustainable and structurally robust concrete practices, offering insights into the optimal utilization of SCMs to meet both engineering requirements and environmental sustainability goals.

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mentioning

confidence: 99%

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Aziz,

Mehboob,

Tayyab

et al. 2024

Sci Rep

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Optimizing polypropylene fiber and carbon nanotubes to reinforce concrete matrix: A response surface methodology

Algaifi,

Muhammad,

Baharom

et al. 2024

Construction and Building Materials

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Development and optimisation of green lightweight engineered cementitious composite containing industrial wastes using response surface methodology

Cited by 2 publications

References 73 publications

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Optimizing polypropylene fiber and carbon nanotubes to reinforce concrete matrix: A response surface methodology

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