Shrinkage, compressive and bond strengths of alkali activated/cement powder for alternative coating applications

Phiangphimai, Chattarika; Joinok, Gonganok; Phoo-ngernkham, Tanakorn; Hanjitsuwan, Sakonwan; Damrongwiriyanupap, Nattapong; Sae-Long, Worathep; Sukontasukkul, Piti; Chindaprasirt, Prinya

doi:10.1016/j.conbuildmat.2023.132631

Cited by 17 publications

(2 citation statements)

References 49 publications

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“…The bonding strength and surface hardness, crucial performance indicators for coatings, effectively reflect the protective effect of geopolymer coatings on concrete structures. The interfacial bonding between geopolymer coatings and concrete arises from physicochemical interactions at the contact surfaces between phases [ 79 , 80 , 81 , 82 , 83 ]. Figure 11 a illustrates the bond strength of geopolymer coatings with varying diatomite concentrations at curing ages of 3 days, 7 days, and 28 days.…”

Section: Resultsmentioning

confidence: 99%

Improving Sag Resistance in Geopolymer Coatings Using Diatomite Filler: Effects on Rheological Properties and Early Hydration

Hu,

Jin,

Pang

et al. 2024

Materials

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The reduction in the rheological parameters and dissolution rate of precursors in geopolymer coatings during early hydration significantly contributes to sagging. This study aims to improve the sag resistance of these coatings by incorporating diatomite filler. Rheological testing was conducted to assess the impact of diatomite and its concentration on the yield stress, plastic viscosity, and thixotropy of the geopolymer coatings. The results indicated that diatomite’s large specific surface area and high reactivity have a significant influence on the rheological parameters and early dissolution rate of precursors. With a diatomite concentration of 1.1%, the coating exhibited a yield stress of 2.749 Pa and a plastic viscosity of 0.921 Pa·s, maintaining stability, homogeneity, and no sagging at a thickness of 600 μm. Furthermore, the highly active SiO2 in diatomite participates in the secondary hydration reaction of the geopolymer materials led to the formation of substantial C-(A)-S-H gel. This gel enhances internal interconnectivity within the coating, thereby improving its rheological and mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Improving Sag Resistance in Geopolymer Coatings Using Diatomite Filler: Effects on Rheological Properties and Early Hydration

Hu,

Jin,

Pang

et al. 2024

Materials

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“…It is noteworthy that besides manganese slag, there are some other sustainable materials that can be used in concrete and geopolymer concrete such as metakaolin [22] and alkali-activated cement [23][24][25] as well as multiwall carbon nanotubes [26].…”

Section: Introductionmentioning

confidence: 99%

The Properties of Normal Concrete with Ground Manganese Slag as Binder Replacement

Chee Khoon Ng,

Johnson Kwong Sen Ting,

Nichole Louise Jack

et al. 2024

ARAM

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Manganese slag is a by-product from the production of ferrosilicon and manganese alloys. It has been found to possess pozzolanic properties and is therefore suitable for use in concrete mixtures. This paper investigates the properties of normal concrete with ground manganese slag as a binder replacement in terms of workability, compressive strength, flexural strength, and leaching characteristics. In this study, it is found that using ground manganese slag as a binder replacement increases the slump of fresh concrete. It is also found that using ground manganese slag as a binder replacement reduces both the development of compressive and flexural strengths. However, at a 10% binder replacement rate, the deterioration is considered minimal. The results of leaching characteristics from 'The Tank Test' show that using ground manganese slag as a binder replacement increases the alkalinity of the solution surrounding the concrete, indicating that the metal ions in the ground manganese have diffused and dissolved in the solution.

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Effect of ZnO on properties of metakaolin-based geopolymer anticorrosive coating

Duan,

Liu,

Zhang

et al. 2024

J Coat Technol Res

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Shrinkage, compressive and bond strengths of alkali activated/cement powder for alternative coating applications

Cited by 17 publications

References 49 publications

Improving Sag Resistance in Geopolymer Coatings Using Diatomite Filler: Effects on Rheological Properties and Early Hydration

Improving Sag Resistance in Geopolymer Coatings Using Diatomite Filler: Effects on Rheological Properties and Early Hydration

The Properties of Normal Concrete with Ground Manganese Slag as Binder Replacement

Effect of ZnO on properties of metakaolin-based geopolymer anticorrosive coating

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