Development of high performance sustainable optimized fiber reinforced geopolymer concrete and prediction of compressive strength

Ganesh, A. Chithambar; Muthukannan, M.

doi:10.1016/j.jclepro.2020.124543

Cited by 153 publications

(58 citation statements)

References 46 publications

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“…The latter can be attributed to difficulties of fibre distribution associated with an increase in the amount of fibres. Ganesh and Muthukannan [ 36 ] experienced a similar phenomenon when producing high-performance glass-fibre-reinforced fly ash and slag-based AACs. In addition, the degradation of kaowool fibres in an alkaline medium emerged as a potential explanation.…”

Section: Resultsmentioning

confidence: 84%

“…It is obvious that the quality of the starting materials determines the properties of AAC composites, which—in some cases—have much lower strength values compared to “classical” binders [ 29 , 35 ]. Strength can be increased by dispersing different fibrous materials in the AAC matrix [ 36 , 37 ] and by improving the adhesion behaviour between rubber particles and the matrix [ 38 , 39 , 40 ]. The mechanical properties of fibre-reinforced AAC composites and of classical concretes lend themselves to comparison: the former can compete with the latter in terms of compressive and flexural strength, can even have better chemical resistance and abrasion resistance and can thus serve as a promising alternative.…”

Section: Introductionmentioning

confidence: 99%

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Development of Waste-Based Alkali-Activated Cement Composites

et al. 2021

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Nowadays, global warming and the ensuing climate change are one of the biggest problems for humanity, but environmental pollution and the low ratio of waste management and recycling are not negligible issues, either. By producing alkali-activated cements (AACs), it is possible to find an alternative way to handle the above-mentioned environmental problems. First, with a view to optimizing experimental parameters, metakaolin-based AACs were prepared, and in it, waste tire rubber was used as sand replacement (5–45 wt %). Insufficient wetting between the rubber particles and the matrix was corrected through different surface treatments of the rubber. For improving the mechanical/strength properties of the specimens, fibrous waste kaolin wool (0.5–1.5 wt %) was added to the AAC matrix. Considering the results of model experiments with metakaolin, blast-furnace-slag-based AAC composites were developed. The effects of storage conditions, specimen size and cyclic loading on the compressive strength were investigated, and the resulting figures were compared with the relevant values of classic binders. The strength (44.0 MPa) of the waste-based AAC composite significantly exceeds the required value (32.5 MPa) of clinker saving slag cement. Furthermore, following cyclic compressive loading, the residual strength of the waste-based AAC composite shows a slight increase rather than a decrease.

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Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Development of Waste-Based Alkali-Activated Cement Composites

et al. 2021

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“…Based on various applications, geopolymer composites show better strength in a certain specific application at room temperature [68,69]. Synthetic carbon and E-glass fibers contribute toward better mechanical properties at RT and higher temperatures.…”

Section: Discussionmentioning

confidence: 99%

An Application Review of Fiber-Reinforced Geopolymer Composite

Samal

Blanco

2021

Fibers

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Fiber-reinforced geopolymer composites (FRGCs) were considered in terms of application in various areas, and a review is presented in this article. FRGCs are emerging as environmentally friendly materials, replacing cement in the construction industry. An alternative inorganic binder such as a geopolymer matrix promotes environmental awareness on releasing less CO2. The inorganic matrix geopolymer is considered a greener cement for FRGCs. Various types of fiber reinforcements and their role toward the improvement of tensile, flexural, impact strength, fracture toughness, and energy absorption in overall mechanical performance in FRGCs were discussed. FRGCs and their properties in mechanical response, with correlation toward microstructure evolution at room and elevated temperatures, were also discussed. Simultaneously, the durability and impact strength of FRGCs and damage area as a function of the energy absorption were presented with 3D reconstruction images. Moreover, 3D images will cover the internal volume of the FRGCs with internal porosity and fiber orientation. Hybrid fiber reinforcement adds an extra step for the application of geopolymer composites for structural applications.

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“…A study from the literature explained that polymer fiber reinforcement concrete enhances durability and fuel efficiency. It was also stated that these concrete results in low maintenance cost, better riding quality, expanded load carrying capacity, and resistance to permeability of water over pliable pavements (Dhand et al, 2015;El-Messalami et al, 2021;Ganesh and Muthukannan, 2021). The concrete is formed by mixing sand and gravel or rocks with cement.…”

Section: Research Articlementioning

confidence: 99%