Acid Resistance and Curing Properties for Green Fly Ash-geopolymer Concrete

Nguyen, Khoa Tan; Lee, Young Hak; Lee, Jaehong; Ahn, Namshik

doi:10.3130/jaabe.12.317

Cited by 45 publications

(21 citation statements)

References 3 publications

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“…Acid resistance of geopolymer increases with curing temperature. FA-based geopolymer cured at 80 • C for 10 h when immersed in HCl solution did not deteriorate much [55]. Microwave cured FA-based geopolymer gave enhanced densification comparable to the conventional curing and as a result more durable in acidic environment [56].…”

Section: Durabilitymentioning

confidence: 90%

Section: Durabilitymentioning

confidence: 97%

“…Acid resistance of geopolymer increases with curing temperature. FA-based geopolymer cured at 80 °C for 10 h when immersed in HCl solution did not deteriorate much [55]. Microwave cured When geopolymer is attacked by acids, Si-O-Al bonds are broken and as a result Si-OH and Al-OH groups get increased in the structure.…”

Section: Durabilitymentioning

confidence: 99%

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Fly Ash-Based Geopolymer Binder: A Future Construction Material

Singh

2018

Minerals

168

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A large amount of waste coming out from industries has posed a great challenge in its disposal and effect on the environment. Particularly fly ash, coming out from thermal power plants, which contains aluminosilicate minerals and creates a lot of environmental problems. In recent years, it has been found that geopolymer may give solutions to waste problems and environmental issues. Geopolymer is an inorganic polymer first introduced by Davidovits. Geopolymer concrete can be considered as an innovative and alternative material to traditional Portland cement concrete. Use of fly ash as a raw material minimizes the waste production of thermal power plants and protects the environment. Geopolymer concretes have high early strength and resistant to an aggressive atmosphere. Methods of preparation and characterization of fly ash-based geopolymers have been presented in this paper. The properties of geopolymer cement/mortar/concrete under different conditions have been highlighted. Fire resistance properties and 3D printing technology have also been discussed.

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Section: Durabilitymentioning

confidence: 90%

Section: Durabilitymentioning

confidence: 97%

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Fly Ash-Based Geopolymer Binder: A Future Construction Material

Singh

2018

Minerals

168

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“…No trabalho proposto por Nguyen et al (2013), foi realizado uma avaliação estrutural dos geopolímeros quando submersos em uma solução de ácido clorídrico sob diferentes concentrações (1M, 2M e 4M) e tempos de exposição. Os autores relatam que a resistência a ataques ácidos em geopolímeros é claramente superior quando comparados com o cimento Portland.…”

Section: Introductionunclassified

“…Os autores observaram ainda que, nas primeiras 4 semanas, a resistência à compressão diminuiu ligeiramente em 4%. Entretanto, esta tendência se alterou quando o tempo de exposição mudou de 4 para 8 semanas, quando a resistência à compressão aumentou em 3%, 0,5% e 1%, para soluções de ácido clorídrico a 4M, 2M e 1M, respectivamente [NGUYEN et al, 2013].…”

Section: Introductionunclassified

Estudo De Corrosão Em Geopolímeros À Base De Cinza Volante

Domingos

Azevedo

Strecker

2019

IX Congresso De Engenharias Da Universidade Federal De São João Del-Rei

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Critical review on fly‐ash based geopolymer concrete

Meesala

Verma

Kumar

2019

Structural Concrete

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Due to enormous growth in industrial development, the consumption of cement is substantially increased in the recent times and the cement manufacturing industry produces annually about 1.35 billion tons of the greenhouse gas emissions which are about 7% of the total greenhouse gas emission by man‐made to the atmosphere. At the same time, the thermal power plants have been generating huge quantity of fly‐ash, which is not being recycled properly. This creates huge burden on solid waste management. Hence, to minimize the emission of CO2 from cement industry and to increase the utilization of fly‐ash, a geopolymer technology is one of the viable solutions. In terms of global warming, the geopolymer technology‐based fly‐ash activated by an alkaline activators not only have potential to significantly reduce carbon footprint of ordinary portland cement concrete, but also shows considerable promise for applications in concrete industry as an alternative binder to the Portland cement. This paper provides a brief status of fly‐ash based geopolymer paste and concrete, encapsulates, and analyses critically the most significant research findings on various properties of geopolymer concrete (GPC) over the past two decades. Also, it identifies the important factors to be considered in improving the performance of GPC at elevated temperatures as well as at ambient temperatures. Collation and analysis of more than 100 research papers in this area may provide a valuable stating document for further research.

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Acid Resistance and Curing Properties for Green Fly Ash-geopolymer Concrete

Cited by 45 publications

References 3 publications

Fly Ash-Based Geopolymer Binder: A Future Construction Material

Fly Ash-Based Geopolymer Binder: A Future Construction Material

Estudo De Corrosão Em Geopolímeros À Base De Cinza Volante

Critical review on fly‐ash based geopolymer concrete

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