Eco-friendly fibre reinforced geopolymer concrete: A critical review on the microstructure and long-term durability properties

Li, Weiwen; Zhao, Jun; Tang, Shiying; Wang, Zike; Zerfu, Kefiyalew

doi:10.1016/j.cscm.2022.e00894

Cited by 37 publications

(25 citation statements)

References 79 publications

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“…According to the concept of sustainable development, new environmentally friendly construction materials can protect the environment and save construction costs [ 24 , 25 ]. Qin et al [ 44 ] used coral reef and coral sand as coarse and fine aggregates to prepare concrete samples in the context of offshore engineering.…”

Section: Resultsmentioning

confidence: 99%

“…Today, the complexity of civil engineering has prompted the industry to develop a variety of new materials. In line with the concept of sustainability, the construction industry is trying to replace ordinary silicate cement concrete using geopolymer concrete [ 23 , 24 , 25 ]. Similarly, the formulation of high-performance concrete from machine-made sand is one of the concrete material sustainability studies [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

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Orthogonal Experimental Study on Concrete Properties of Machine-Made Tuff Sand

et al. 2022

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Machine-made sand instead of natural sand has become an inevitable choice for the sustainable development of the concrete industry. Orthogonal experiment and grey correlation analysis were used to investigate the performance of machine-made tuff sand concrete. The optimal concrete mix ratio of machine-made sand was obtained by orthogonal test and its working performance was verified. Grey correlation analysis was applied to compare the factors affecting the mechanical properties of the machine-made sand concrete. The test results show that the sand rate has the greatest degree of influence on slump and slump expansion. The mineral admixture has the greatest effect on the 7-day compressive strength of the concrete. Additionally, the water–cement ratio has the greatest influence on the 28-day compressive strength. The mechanical and working properties of the machine-made sand concrete reach the optimum condition when the mineral admixture is 20%, the sand rate is 46%, the stone powder content is 10% and the water–cement ratio is 0.30. Comparing different fine aggregate concretes of similar quality, we conclude that the mechanical and working properties of tuff sand concrete and limestone sand concrete and river sand concrete are similar. The compressive strengths of the mechanism concrete show the greatest correlation with roughness and the least correlation with stone powder content. The stone powder content has almost no effect on the compressive strength of concrete when the stone powder content does not exceed a certain range. The results of the study point out the direction for the quality control of concrete with machine-made sand.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orthogonal Experimental Study on Concrete Properties of Machine-Made Tuff Sand

et al. 2022

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“…Due to the high environmental impact of conventional concrete production, the development of geopolymer concrete is considered the most important innovation in the construction sector [ 146 ]. The addition of fly ash or granulated blast-furnace slag into concrete leads to environmental advantages such as reducing CO 2 emissions and increased waste reuse [ 147 ].…”

Section: Application Of Steel Fibers In Different Types Of Concretementioning

confidence: 99%

A Comprehensive Analysis of the Use of SFRC in Structures and Its Current State of Development in the Construction Industry

et al. 2022

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In recent years, concrete technology has advanced, prompting engineers and researchers to adopt advanced materials to improve strength and durability. Steel-fiber-reinforced concrete (SFRC) represents the substantial modification of concrete materials to improve their structural properties, particularly their flexural and tensile strength. Whether SFRC is stronger than conventional concrete depends on a variety of variables, including the volume, size, percentage, shape, and distribution of fibers. This article provides a comprehensive discussion of the properties of SFRC, such as durability, fire resistance, and impact resistance or blast loading, as well as the application of SFRC in structural members including beams, columns, slabs, and walls. The application of steel fibers in various types of concrete, including pre-stressed, pre-cast, self-compacting, and geopolymer concrete, was also examined in this comparative analysis review, and recommendations for the future scope of SFRC were identified.

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“…Plant fibers have been regarded to be excellent reinforcing elements for geopolymer matrices because geopolymerization occurs in high alkaline settings and lignocellulose fibers have a considerable tolerance to these conditions [ 110 , 111 ]; the addition of pozzolanic materials and alkaline activators in the composition of the geopolymer matrix act as specific fiber treatments [ 111 ]. Recent advances in the production of natural fiber-reinforced geopolymers as promising sustainable construction materials were reviewed by Silva et al [ 110 ] and Li et al [ 112 ]; a survey of successful reinforcements with natural fibers was reported, with a majority of the studies focusing on industrial by-products such as fly ash, ground-granulated blast furnace slag, construction and demolition wastes, and mine-tailings. Fibers act as concrete’s microcracking control units such that when the first fracture appears, the fibers function as bridges in the cracked portion, transmitting loads from the crack to the concrete, thereby making fiber-reinforced concrete more efficient [ 96 , 112 , 113 ].…”

Section: Sustainability Of Diatomaceous Earth As a Concrete Productio...mentioning

confidence: 99%

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

et al. 2022

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The development of geopolymer building composites at a lower cost with a smaller carbon footprint may lessen the growing concerns about global warming brought on by emissions of a critical greenhouse gas (CO2) paired with the high production costs in the cement sector. Diatomaceous earth, commonly used as an admixture or partial replacement of cement owing to its most effective pozzolanic properties, has been investigated as a precursor in geopolymer concrete development. Several studies have been examined to develop a greater understanding of its characterization, inclusion status, and impacts on the performance aspects of concrete. The literature review showed that using diatomaceous earth is one of the effective ways to create sustainable, insulating, lightweight building materials while minimizing the harmful economic and environmental effects of industrial solid wastes. However, since most studies have focused on its integration as a partial cement substitute or a replacement for fine aggregate, further research on diatomaceous earth-based clinker-free concrete is required. A lack of research on geopolymer concrete’s reinforcement with either natural or synthetic fibers, or a combination of the two, was also discovered. This review also showed that there has been remarkably little effort made towards theoretical property correlation modeling for predicting concrete performance. It is anticipated that the detailed overview presented herein will guide potential researchers in defining their future paths in the study area.

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Eco-friendly fibre reinforced geopolymer concrete: A critical review on the microstructure and long-term durability properties

Cited by 37 publications

References 79 publications

Orthogonal Experimental Study on Concrete Properties of Machine-Made Tuff Sand

Orthogonal Experimental Study on Concrete Properties of Machine-Made Tuff Sand

A Comprehensive Analysis of the Use of SFRC in Structures and Its Current State of Development in the Construction Industry

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

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