An investigation of resistance of sodium meta silicate activated slag mortar to acidic and basic mediums

Bingöl, Şinasi; Bilim, Cahit; Atiş, Cengiz Duran; Durak, Uğur; İlkentapar, Serhan; Karahan, Okan

doi:10.7764/rdlc.19.1.127-133

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Bingol et al ( 2020) observed an increase in the compressive strength of water-cured slag GPM specimens when subjected to H2SO4 media. The authors utilized a sodium metasilicate activator in their investigation [83].…”

Section: Geopolymer Paste (Gpp)mentioning

confidence: 99%

Acid Resistance of Geopolymer Concrete – Literature Review, Knowledge Gaps, and Future Development

Mostazid

2024

BEN

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Geopolymer concrete, a sustainable and durable alternative to conventional Portland cement-based concrete, has gained significant attention in recent years. Its reduced carbon footprint and superior mechanical properties make it a viable option for various construction applications. However, acid resistance remains a critical area of concern, particularly in environments where exposure to acidic substances is prevalent. This review paper delves into the acid resistance of geopolymer concrete, providing a comprehensive overview of the latest research findings, methodologies, and advancements in the field. The paper commences by exploring the fundamental principles of geopolymer chemistry. Subsequently, the paper meticulously reviews the experimental results of studies investigating the acid resistance of geopolymer concrete. It focuses on the effects of various acids commonly encountered in industrial and environmental settings, such as sulfuric acid, hydrochloric acid, and organic acids. The paper summarizes the key findings from the reviewed literature, highlighting the strengths and limitations of geopolymer concrete in terms of acid resistance. It identifies the factors that contribute to enhanced acid resistance and suggests potential strategies for further improvement. Furthermore, the paper outlines future research directions, emphasizing the need for long-term studies, the development of standardized testing methods, and the exploration of novel geopolymer formulations with superior acid resistance.

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Section: Geopolymer Paste (Gpp)mentioning

confidence: 99%

Acid Resistance of Geopolymer Concrete – Literature Review, Knowledge Gaps, and Future Development

Mostazid

2024

BEN

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“…Therefore, it can be used as an alternative eco-friendly material (Luo, Xu, and Li 2015). In the production of geopolymer, industrial wastes such as FA, blast furnace slag, silica fume and natural materials such as kaolin, clay, lime and red mud are used as binders (Bingöl et al 2020;Khadka et al 2020;Li et al 2019;Qu et al 2020;Sarker 2011;Sukprasert et al 2021;Yurt 2020aYurt , 2020b. These binders are activated with various alkalis.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of C class fly ash based lightweight geopolymer mortar produced with expanded vermiculite aggregate

Kaya

Köksal

2022

rdlc

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This study presents the physical and the mechanical properties of C class fly ash (FA) based lightweight geopolymer mortars produced with expanded vermiculite (EV) aggregate. The FA was activated with NaOH containing 12%, 14% and 16% sodium by weight. The volumetric ratios of EV/FA in the samples were chosen as 2,4 and 6 in the study. The liquid/solid ratio 0.23, 0.26 and 0.29. Lightweight geopolymer mortar (LGM) samples were produced by mixing FA, EV, NaOH and water in a mixer. The samples placed in molds were exposed to activation temperature of 100°C for 24 hours in the oven. The samples taken out of the oven were demoulded and kept in air curing for 28 days at 20°C±2°C room temperature. After curing, unit weight, apparent porosity, water absorption ratio, ultrasonic pulse velocity (UPV), flexural strength and compressive strength tests were performed on the samples. In addition, the thermal conductivity coefficients of the samples were determined. As a result of the experiment, a compressive strength varying between 0.59 MPa and 3.81 MPa was obtained in lightweight geopolymers samples with a unit weight between 906 kg/m3 and 1477 kg/m3. Expanded vermiculite showed a good performance on thermal conductivity of LGMs and a decrease in thermal conductivity up to the 0.094 W/mK was observed.

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“…Due to the environmental problems of the cement sector, efforts are continuing to produce an alternative binder to cement. Industrial wastes such as blast furnace slag, fly ash, floor ash and silica fume are activated with various alkalis (Bingöl et al 2020;Şahin, Mahyar & Erdoğan 2016). As a result of this chemical activation, cement-like binder can be produced.…”

Section: Introductionmentioning

confidence: 99%

Influences of high temperature on mechanical properties of fly ash based geopolymer mortars reinforced with PVA fiber

Kaya

Köksal

2021

rdlc

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In this study, a geopolymer composite containing PVA fiber was produced to recycle waste fly ash and obtain an eco-friendly binder. Mechanical properties of geopolymer mortars, produced by using F class fly ash which was activated with NaOH (sodium hydroxide), and reinforced by PVA (polyvinyl alcohol) fiber were investigated after high temperature effect. Geopolymer mortar samples produced by mixing with fly ash, sand, water and NaOH were placed in standard molds of 40×40×160 mm3. PVA fibers were used at percentages of 0,5%, 1% and 1,5% by volume in the experiment. Tests were performed on mortars exposed to high temperatures of 200°C, 400°C, 600°C and 800°C for physical and mechanical properties. For the specimens not subjected to high temperatures, an increase in the compressive strength of mortars containing PVA fibers was observed in comparison to mortar without PVA fiber. On the other hand, it was concluded that losses in compressive strength were less for mortar without PVA fiber when compared with the mortars containing PVA fibers. As a result of the modeling, the PVA ratio, which gives the optimum flexural and compressive strength, was determined as 1,47%. As a result of melting of PVA fibers under the effect of high temperature, 83,58% loss of compressive strength was determined in samples containing 1,5% PVA after 800ºC temperature.

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An investigation of resistance of sodium meta silicate activated slag mortar to acidic and basic mediums

Cited by 8 publications

References 9 publications

Acid Resistance of Geopolymer Concrete – Literature Review, Knowledge Gaps, and Future Development

Acid Resistance of Geopolymer Concrete – Literature Review, Knowledge Gaps, and Future Development

Physical and mechanical properties of C class fly ash based lightweight geopolymer mortar produced with expanded vermiculite aggregate

Influences of high temperature on mechanical properties of fly ash based geopolymer mortars reinforced with PVA fiber

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