Contribution of Interfacial Bonding towards Geopolymers Properties in Geopolymers Reinforced Fibers: A Review

Yazid, Muhd Hafizuddin; Faris, Meor Ahmad; Abdullah, Mohd Mustafa Al Bakri; Nabiałek, M.; Rahim, Shayfull Zamree Abd; Salleh, Mohd Arif Anuar Mohd; Kheimi, Marwan; Sandu, Andrei Victor; Rylski, A.; Jeż, B.

doi:10.3390/ma15041496

Cited by 5 publications

(3 citation statements)

References 81 publications

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“…The interface characteristics and adhesion of fibers and matrix are key factors in the interface control technology of composites [ 52 , 80 ]. The bond between the GP matrix and the fiber is similar to that of the cement matrix.…”

Section: Plant Fiber-reinforced Geopolymers (Pfrgs)mentioning

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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Section: Plant Fiber-reinforced Geopolymers (Pfrgs)mentioning

confidence: 99%

Effect of Plant Fiber on Early Properties of Geopolymer

Lv,

Wu,

Guo

et al. 2023

Molecules

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“…By adjusting the characteristics of the interface layer and the bonding state, the interface control of the composite can be realized, so that the composite can achieve the best performance. The interface adhesion performance between fiber reinforcement and geopolymer matrix is the most critical factor in interface control technology of composites [ 74 , 75 ]. Alomayri et al [ 76 ] used layup technology to prepare cotton fabric reinforced geopolymers with different layers.…”

Section: Geopolymers and 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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“…The interaction between heavy metal ions and the geopolymer matrix varies, dependent upon the elements and its oxidation number. For example, As 2+ ions are only slightly bound by geopolymers [11]. While, chromium ions cannot be properly immobilized in the form of Cr 6+ , but can be immobilized very strongly by geopolymers in the form of Cr 3+ [8,12].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of fly ash-based geopolymer and its performance for immobilization of heavy metal cations

Iqbal¹,

Supriadi²,

Burhan³

et al. 2022

CST

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In this study, the geopolymer from fly ash as based-raw material has been examined on the ability of several heavy metal ions immobilization. The fly ash has been provided from PT IPMOMI which firstly analyzed the physical and chemical properties. Fly ash and heavy metals were mixed with an activator base until homogeneous, then cast into a cylindrical shape mold following ASTM C 39-86 and left for 7 days. After that, the geopolymer was characterized by SEM, FTIR, XRD, compressive strength test and TCLP. The diffractogram of PT. IPMOMI fly ash exhibited the existence of mullite, alumina and iron oxide phase, which were suitable with XRF result. From FTIR spectra, the vibration on finger print area appeared indicating the vibration of T-O-T from geopolymer network. The observation revealed that the addition of Pb2+ cations caused microcracking from SEM image and affected the compressive strength of the geopolymer. Sr2+ was an ion that was very easilyleached compared to other three ions, and it caused a weak interaction between Sr2+ and geopolymer network. The higher amount of metal ions into the geopolymer network reduced the compressive strength of geopolymer. Sr2+-geopolymer had a lower compressive strength compared to Pb2+, Cd2+, and Co2+.

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Contribution of Interfacial Bonding towards Geopolymers Properties in Geopolymers Reinforced Fibers: A Review

Cited by 5 publications

References 81 publications

Effect of Plant Fiber on Early Properties of Geopolymer

Effect of Plant Fiber on Early Properties of Geopolymer

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

Fabrication and characterization of fly ash-based geopolymer and its performance for immobilization of heavy metal cations

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