Geopolymer concrete: A review of some recent developments

Singh, B.; Ishwarya, G.; Gupta, M.; Bhattacharyya, S. K.

doi:10.1016/j.conbuildmat.2015.03.036

Cited by 1,159 publications

(377 citation statements)

References 63 publications

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“…For near perfect geopolymerisation the curing temperatures were observed between 40°C to 85°C. Singh et al (2015) reported that for an alkaline activated fly ash, curing temperature is very vital for achieving higher strength, specimens subjected to higher curing temperature exhibited higher mechanical strength than those of lower temperature this findings is in agreement with that of (Nuruddin et al, 2016). They also observed that longer duration of curing results in better strength but the increase of strength is negligible when curing time was extended beyond 24 hours.…”

Section: Heat/oven Curingsupporting

confidence: 81%

Methods of curing geopolymer concrete: A review

Nurruddin

2018

Int. j. adv. appl. sci.

144

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Geopolymer concrete is a new approach of concrete production by exclusion of ordinary Portland cement entirely with pozzolanic material. Beside water, concrete is the largest consumed substances, which demand huge portion of Portland cement. During Portland cement manufacturing process, high emission of carbon dioxide (CO2) is produced which results in polluting the surrounding environment. Moreover, a lot of energy is expended during cement production. Based on manufacturing situations, geopolymer concrete displays different behaviors and attributes. This paper succinctly discusses the different methods of curing of geopolymer concrete and figures out the best method of curing. Experimental findings revealed that condition of curing has a good influence on the mechanical properties of geopolymer concrete. Conventionally, ambience temperature curing of geopolymer concrete result in low strength development at an early age, while higher temperature curing results in significant strength improvement. Similarly, extended curing time enhanced the geopolymerisation mechanism and achieved greater strength. However, longer duration of curing at an elevated temperature result in failure of the sample.

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Section: Heat/oven Curingsupporting

confidence: 81%

Methods of curing geopolymer concrete: A review

Nurruddin

2018

Int. j. adv. appl. sci.

144

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“…SiO2, CaO, Al2O3, Fe2O3 and K 2 O were the major components. According to the literature, these oxides are the main components of geopolymer concrete 16,17,18 . FT-IR analyses allowed the identification of the functional groups present on PET polymer, U-GCW and T-GCW.…”

Section: Resultsmentioning

confidence: 99%

Processing and Characterization of PET Composites Reinforced With Geopolymer Concrete Waste

et al. 2017

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In the present study, poly (ethylene terephthalate)-based composites were produced and characterized. These composites were composed by poly (ethylene terephthalate) (PET) reinforced with geopolymer concrete waste (GCW). Both untreated (U-GCW) and treated with oleic acid (OA) geopolymer concrete waste (T-GCW) were used in the production of the composites. The PET/GCW ratios used for either treated or untreated GCW bodies were 80/20 (wt%), 60/40 (wt%) and 50/50 (wt%). Chemical compositions were assessed by X-ray fluorescence spectroscopy (XRF), crystallinity by differential scanning calorimetry (DSC), thermal stability by thermogravimetry (TGA), microstructure by field emission gun scanning electron microscopy (FEG-SEM) with energy dispersive X-ray spectroscopy (EDS), and mechanical properties were assessed by compression tests. Fourier transform infrared spectroscopy (FT-IR) was used to check the efficiency of the treatment with OA, as well as the interaction between PET and GCW. The T-GCW PET composites showed better thermal, physical, and mechanical properties, for non-structural applications, when compared to U-GCW.

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“…In spite of the benefits of concrete, there are several factors, such as high energy consumption, high CO 2 emissions, and limited limestone reserves that have led to the reconsideration of the use of this material [1]. Owing to the above, measures have been taken both to improve the production processes of Portland cement, via the use of alternative fuels and different sources of raw materials to develop new cementitious materials that equal or exceed the properties of Portland cement and, in turn, exhibit better environmental performance.…”

Section: Introductionmentioning

confidence: 99%

Metakaolin-Based Geopolymer with Added TiO2 Particles: Physicomechanical Characteristics

2017

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Abstract:The effect of the TiO 2 addition on the physicomechanical properties of a geopolymer system based on metakaolin (MK) and hydroxide and potassium silicate as activators is presented in this article. Three different liquid-solid systems (0.35, 0.40, and 0.45) and two titanium additions were investigated (5% and 10% of the cement content). The flowability, setting time, and mechanical strength of the geopolymer mixtures and their microstructural characteristics were evaluated using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). It was concluded that a percentage of up to 10% TiO 2 does not affect the mechanical properties of the geopolymer, although it does reduce the fluidity and setting times of the mixture.

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Geopolymer concrete: A review of some recent developments

Cited by 1,159 publications

References 63 publications

Methods of curing geopolymer concrete: A review

Methods of curing geopolymer concrete: A review

Processing and Characterization of PET Composites Reinforced With Geopolymer Concrete Waste

Metakaolin-Based Geopolymer with Added TiO2 Particles: Physicomechanical Characteristics

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