Fibre-reinforced geopolymer concrete with ambient curing for in situ applications

Reed, Mark Edward; Lokuge, Weena; Karunasena, Warna

doi:10.1007/s10853-014-8125-3

Cited by 98 publications

(63 citation statements)

References 16 publications

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“…Herein, we apply gum arabic (GA) polymer as a dual function binder utilizing the concept of fiber-reinforced concrete (FRC) in LIB electrode fabrication. It is well-established that the fibers reinforce the rigidity and flexibility in the "concrete" laminate [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Fibers for reinforcement in laminate can be classified into two categories: (i) low modulus, high elongation fibers such as nylon, polypropylene and polyethylene. This type of fibers could primarily enhance the energy absorption of composites in the post-cracking stage (as glycoprotein in GA) and (ii) high modulus and mechanical strength fibers such as steel, glass and asbestos that could enhance the strength and the toughness of the composites [23][24][25][26][32][33][34][35][36]. The natural gum-derived polymer GA is applied as the binder to enhance the tolerance to cracking from volume expansion in Si anode materials.…”

Section: Introductionmentioning

confidence: 99%

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Dual-functional gum arabic binder for silicon anodes in lithium ion batteries

et al. 2015

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Si has attracted enormous research and manufacturing attention as an anode material for lithium ion batteries (LIBs) because of its high specific capacity. The lack of a low cost and effective mechanism to prevent the pulverization of Si electrodes during the lithiation/ delithiation process has been a major barrier in the mass production of Si anodes. Naturally abundant gum arabic (GA), composed of polysaccharides and glycoproteins, is applied as a dualfunction binder to address this dilemma. Firstly, the hydroxyl groups of the polysaccharide in GA are crucial in ensuring strong binding to Si. Secondly, similar to the function of fiber in fiberreinforced concrete (FRC), the long chain glycoproteins provide further mechanical tolerance to dramatic volume expansion by Si nanoparticles. The resultant Si anodes present an outstanding capacity of ca. 2000 mAh/g at a 1 C rate and 1000 mAh/g at 2 C rate, respectively, throughout 500 cycles. Excellent long-term stability is demonstrated by the maintenance of 1000 mAh/g specific capacity at 1 C rate for over 1000 cycles. This low cost, naturally abundant and environmentally benign polymer is a promising binder for LIBs in the future.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual-functional gum arabic binder for silicon anodes in lithium ion batteries

et al. 2015

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“…River sand was taken as a FA, which is delimiting to zone II grading accordance with IS: 383-1970 [9] with 2.60 of specific gravity and 2.60 of fine modulus. 12mm of size crushed granite stones confirming to IS: 2386 (Part -I) -1963 [12] was used as CA with 2.91 of specific gravity and 6.60 of fineness modulus.…”

Section: Table-i: Chemical Compositions Of Ggbs and Famentioning

confidence: 99%

Effect of Aspect ratio and Volume Fraction of Steel Fibers in Strength Properties of Geopolymer Concrete

2019

IJITEE

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In this present study, a trail has been conducted to examine the influence of dissimilar aspect ratio and diverse volume fractions of steel fibers in GPC under various curing exposures on the fresh and mechanical properties. Meanwhile, the major strength performance of concrete such as compressive strength, split tensile, flexural, workability and microstructure properties were also studied. From the test results, it was revealed that in the heat curing method, there was just a low augmentation in the compressive strength at 28 years old days when compared with ambient curing condition. Then again, a radical increment in the compressive strength was recognized at 3 days on account of thermal curing because of the elevated polymerization process. The microstructure investigation illustrated that the FA and GGBS particles reacted with the alkaline activator solution and formed a denser structure in the heat curing process when compared with the room-cured specimens because of the unreacted particles present in it. The Xray diffraction pattern shows that the geopolymer particles are crystalline in nature. It was observed that the strength properties were increases with the augment in aspect ratio (Ar) and high percentage volume of steel fibers.

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“…It has been reported in many literatures that Geopolymer Concrete possess more brittleness than ordinary concrete [9][10]. This brittleness can be abridged by the addition of fibers [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Polypropylene fibers over GGBS based Geopolymer Concrete Under Ambient Curing

2019

IJITEE

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Geopolymer is being widely used in the construction industry in the recent years. Ground Granulated Blast Furnace Slag (GGBS) based geopolymer concrete is the most suited for ambient curing conditions. It has been perceived that geopolymer concrete is brittle in nature. This brittleness could be reduced by the augmentation of fibers. The objective of this paper is to study the effect of incorporation of polypropylene fibers in Geopolymer Concrete. The various proportions of the ingredients of Geopolymer concrete were calculated from the B.V.Rangan mix design of Geopolymer Concrete. Based on the previous research works conducted by the author, optimum molarity of the sodium hydroxide solution to be used as a part of alkaline activator solution was taken as 13M. Polypropylene fibers were added to the matrix in the ratios from 0.1% to 0.6%. Cubical, Cylindrical and Prism Specimens were casted and subjected to ambient curing. Compaction factor test was performed to measure workability of fresh concrete and tests such as compressive strength test, split tensile strength test and flexural strength test were performed to assess the mechanical properties of hardened Fiber Reinforced Geopolymer Concrete. Tests were carried after curing period of 7days & 28 days and the results were tabulated. Being a low modulus fiber, the fiberposses a good post cracking behaviour and reduce the brittleness of the Geopolymer Concrete. The incorporation of polypropylene fibers increases the compressive strength and flexural strength initially and then decreases.

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Fibre-reinforced geopolymer concrete with ambient curing for in situ applications

Cited by 98 publications

References 16 publications

Dual-functional gum arabic binder for silicon anodes in lithium ion batteries

Dual-functional gum arabic binder for silicon anodes in lithium ion batteries

Effect of Aspect ratio and Volume Fraction of Steel Fibers in Strength Properties of Geopolymer Concrete

Effect of Polypropylene fibers over GGBS based Geopolymer Concrete Under Ambient Curing

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