Flexural strength of Lightweight geopolymer concrete using sisal fibres

Kavipriya, S.; Deepanraj, C.G.; Dinesh, S.; Prakhash, N.; Lingeshwaran, N.; Ramkumar, S.

doi:10.1016/j.matpr.2021.08.135

Cited by 13 publications

(6 citation statements)

References 10 publications

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“…The solution was mixed until the temperature was stable and the concentration was balanced. Kavipriya et al [89] evaluated the properties of the composites by adding 0.25%, 0.5%, 0.75%, and 1.0% SFs, respectively. They used bamboo sticks instead of coarse aggregate.…”

Section: Design Of MIX Proportionmentioning

confidence: 99%

“…Compared with the compressive performance, SFs had a more obvious effect on the flexural strength of GP composites [123,124]. Kavipriya et al [89] took SFs and bamboo sticks as the main research objects to study their influence on the compressive performance of lightweight GPs. The GP matrix was supplemented with 0.25%, 0.5%, 0.75%, and 1.0% SFs, while the coarse aggregate was replaced with 10%, 20%, and 30% bamboo strips.…”

Section: Flexural Performancementioning

confidence: 99%

“…Compared with human-made fibers, the effect of plant fibers on the flexural strength of the composite were not particularly significant. Figure 10 shows the relationship between the SF content and flexural performance of SFRGs [13,48,51,53,89]. The bending curve shows that the appropriate amount of fiber was positively related to the bending resistance of the matrix.…”

Section: Flexural Performancementioning

confidence: 99%

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A Review of Sisal Fiber-Reinforced Geopolymers: Preparation, Microstructure, and Mechanical Properties

Qu,

Niu,

et al. 2024

Molecules

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The early strength of geopolymers (GPs) and their composites is higher, and the hardening speed is faster than that of ordinary cementitious materials. Due to their wide source of raw materials, low energy consumption in the production process, and lower emissions of pollutants, they are considered to have the most potential to replace ordinary Portland cement. However, similar to other inorganic materials, the GPs themselves have weak flexural and tensile strength and are sensitive to micro-cracks. Improving the toughness of GP materials can be achieved by adding an appropriate amount of fiber materials into the matrix. The use of discrete staple fibers shows great potential in improving the toughness of GPs. Sisal is a natural fiber that is reproducible and easy to obtain. Due to its good mechanical properties, low cost, and low carbon energy usage, sisal fiber (SF) is a GP composite reinforcement with potential development. In this paper, the research progress on the effect of SF on the properties of GP composites in recent decades is reviewed. It mainly includes the chemical composition and physical properties of SFs, the preparation technology of sisal-reinforced geopolymers (SFRGs), the microstructure analysis of the interface of SFs and the GP matrix, and the macroscopic mechanical properties of SFRGs. The properties of SFs make them have good bonding properties with the GP matrix. The addition of SFs can improve the flexural strength and tensile strength of GP composites, and SFRGs have good engineering application prospects.

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Section: Design Of MIX Proportionmentioning

confidence: 99%

Section: Flexural Performancementioning

confidence: 99%

Section: Flexural Performancementioning

confidence: 99%

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A Review of Sisal Fiber-Reinforced Geopolymers: Preparation, Microstructure, and Mechanical Properties

Qu,

Niu,

et al. 2024

Molecules

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“…An appropriate number of fibers distributed evenly in the matrix can enhance compactibility, reduce porosity and crack, and thus improve the compressive strength of the composite. Kavipriya et al [ 125 ] found that when the common aggregate in the composite was replaced with 10%, 20%, and 30% bamboo aggregate, the strength of the GP matrix did not decrease, while the strength of cement concrete decreased more.…”

Section: Early Strength Of Pfrgsmentioning

confidence: 99%

Effect of Plant Fiber on Early Properties of Geopolymer

Lv,

Wu,

Guo

et al. 2023

Molecules

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Geopolymer (GP) is environmentally friendly, has good mechanical properties and long-term workability, and has broad application prospects. However, due to the poor tensile strength and toughness of GPs, they are sensitive to microcracks, which limits their application in engineering. Fiber can be added to GPs to limit the growth of cracks and enhance the toughness of the GP. Plant fiber (PF) is cheap, easy to obtain, and abundant in source, which can be added to GP to improve the properties of composites. This paper reviews recent studies on the early properties of plant fiber-reinforced geopolymers (PFRGs). In this manuscript, the properties of PFs commonly used for GP reinforcements are summarized. The early properties of PFRGs were reviewed, including the rheological properties of fresh GPs, the early strength of PFRGs, and the early shrinkage and deformation properties of PFRGs. At the same time, the action mechanism and influencing factors of PFRGs are also introduced. Based on the comprehensive analysis of the early properties of PFRGs, the adverse effects of PFs on the early properties of GPs and the solutions were summarized.

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“…Kavipriya et al [ 111 ] used 10, 20, and 30% bamboo sticks in place of coarse aggregate. At the same time, different proportions of sisal fibers were added, and the volume ratios were 0.25%, 0.5%, 0.75%, and 1.0%, respectively.…”

Section: Mechanical Properties Of Pfrgsmentioning

confidence: 99%

The Mechanical Properties of Plant Fiber-Reinforced Geopolymers: A Review

Liu

Guo

et al. 2022

Polymers

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Both geopolymer and plant fiber (PF) meet the requirements of sustainable development. Geopolymers have the advantages of simple preparation process, conservation and environmental protection, high early strength, wide source of raw materials, and low cost. They have broad application prospects and are considered as the most potential cementitious materials to replace cement. However, due to the ceramic-like shape and brittleness of geopolymers, their flexural strength and tensile strength are poor, and they are sensitive to microcracks. In order to solve the brittleness problem of geopolymers, the toughness of composites can be improved by adding fibers. Adding fibers to geopolymers can limit the growth of cracks and enhance the ductility, toughness and tensile strength of geopolymers. PF is a good natural polymer material, with the advantages of low density, high aspect ratio. It is not only cheap, easy to obtain, abundant sources, but also can be repeatedly processed and biodegradable. PF has high strength and low hardness, which can improve the toughness of composites. Nowadays, the research and engineering application of plant fiber-reinforced geopolymers (PFRGs) are more and more extensive. In this paper, the recent studies on mechanical properties of PFRGs were reviewed. The characteristics of plant fibers and the composition, structure and properties of geopolymers were reviewed. The compatibility of geopolymer material and plant fiber and the degradation of fiber in the substrate were analyzed. From the perspective of the effect of plant fibers on the compression, tensile and bending properties of geopolymer, the reinforcing mechanism of plant fibers on geopolymer was analyzed. Meanwhile, the effect of PF pretreatment on the mechanical properties of the PFRGs was analyzed. Through the comprehensive analysis of PFFRGs, the limitations and recommendations of PFFRG are put forward.

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Flexural strength of Lightweight geopolymer concrete using sisal fibres

Cited by 13 publications

References 10 publications

A Review of Sisal Fiber-Reinforced Geopolymers: Preparation, Microstructure, and Mechanical Properties

A Review of Sisal Fiber-Reinforced Geopolymers: Preparation, Microstructure, and Mechanical Properties

Effect of Plant Fiber on Early Properties of Geopolymer

The Mechanical Properties of Plant Fiber-Reinforced Geopolymers: A Review

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