Electrical and mechanical properties of aluminosilicate inorganic polymer composites with carbon nanotubes

MacKenzie, Kenneth J.D.; Bolton, Matthew J.

doi:10.1007/s10853-009-3377-z

Cited by 73 publications

(23 citation statements)

References 20 publications

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“…The unique properties such as high elastic modulus and tensile strength and high aspect ratio make CNTs an ideal candidate for reinforcement. Mackenzie and Bolton [10] investigated the tensile strength of potassium-based aluminosilicate (clay) geopolymers containing single walled carbon nanotubes (SWCNTs) at concentrations of 0.20, 0.25 and 0.35-wt.%. The tensile strength results were inconsistent.…”

Section: Introductionmentioning

confidence: 99%

Enhanced properties of graphene/fly ash geopolymeric composite cement

Saafi

Tang

Fung

et al. 2015

Cement and Concrete Research

235

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This paper reports for the first time the incorporation of in-situ reduced graphene oxide (rGO) into geopolymers. The resulting rGO-geopolymeric composites are easy to manufacture and exhibit excellent mechanical properties. Geopolymers with graphene oxide (GO) concents of 0.00, 0.10, 0.35 and 0.50% by weight were fabricated. The functional groups, morphology, void filling mechanisms and mechanical properties of the composites were determined. The Fourier transform infrared (FTIR) spectra revealed that the alkaline solution reduced the hydroxyl/carbonyl groups of GO by deoxygenation and/or dehydration. Concomitantly, the spectral absorbance related to silica type cross-linking increased in the spectra. The scanning electron microscope (SEM) micrographs indicated that rGO altered the morphology of geopolymers from a porous nature to a substantially pore filled morphology with increased mechanical properties. The flexural tests showed that 0.35-wt% rGO produced the highest flexural strength, Young’s modulus and flexural toughness and they were increased by 134%, 376% and 56%, respectivel

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Section: Introductionmentioning

confidence: 99%

Enhanced properties of graphene/fly ash geopolymeric composite cement

Saafi

Tang

Fung

et al. 2015

Cement and Concrete Research

235

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“…Aluminosilicate inorganic polymers, also called geopolymers, were first described by Davidovits as the materials formed under high alkali conditions from aluminosilicate solid and alkali silicate solutions [8]. The geopolymer is a type of cross-linked long-chain inorganic polymer material between tetrahedral [AlO 4 ] and [SiO 4 ] units, built in three-dimensional structures.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity and dielectric property of fly ash geopolymer pastes

Hanjitsuwan

Chindaprasirt

Pimraksa

2011

Int J Miner Metall Mater

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The electrical conductivity and dielectric property of fly ash geopolymer pastes in a frequency range of 100 Hz-10 MHz were studied. The effects of the liquid alkali solution to ash ratios (L/A) were analyzed. The mineralogical compositions and microstructures of fly ash geopolymer materials were also investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The 10 mol sodium hydroxide solution and sodium silicate solution at a sodium silicate-to-sodium hydroxide ratio of 1.0 were used in making geopolymer pastes. The pastes were cured at 40C. It is found that the electrical conductivity and dielectric constant are dependent on the frequency range and L/A ratios. The conductivity increases but the dielectric constant decreases with increasing frequency.

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“…Studies of the behaviour of AAMs reinforced with carbon fi bres [ 204 ] and nanotubes [ 219 ] showed that neither improved the mechanical strength of the specimens tested. However, the inclusion of 1 % carbon fi bre improved mortar corrosion resistance.…”

Section: Fibre Reinforcingmentioning

confidence: 99%

Other Potential Applications for Alkali-Activated Materials

Bernal

Schroeyers

Provis

et al. 2013

Alkali Activated Materials

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The focus of this chapter is the discussion of a variety of niche applications (other than as a large-scale civil infrastructure material) in which alkali-activated binders and concretes have shown potential for commercial-scale development. The majority of these applications have not yet seen large-scale AAM utilisation, except as noted in the various sections of the chapter. However, there have been at least pilot-scale or demonstration projects in each of the areas listed, and each provides scope for future development and potentially profi table advances in science and technology. In addition to the applications specifi cally discussed in this chapter, there are also commercial and academic developments in alkali-activation for specifi c applications including a commercial product which is being marketed as a domestic tiling grout showing some self-cleaning properties [ 1 ], as well as

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Electrical and mechanical properties of aluminosilicate inorganic polymer composites with carbon nanotubes

Cited by 73 publications

References 20 publications

Enhanced properties of graphene/fly ash geopolymeric composite cement

Enhanced properties of graphene/fly ash geopolymeric composite cement

Electrical conductivity and dielectric property of fly ash geopolymer pastes

Other Potential Applications for Alkali-Activated Materials

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