Low-density granite-based geopolymer for well cementing: The role of burnt lime in enhancing early strength

Agista, M.N.; Khalifeh, M.; Braga, R.M.; Freitas, J.C.O.

doi:10.1016/j.geoen.2024.213249

Geoenergy Science and Engineering

2024

DOI: 10.1016/j.geoen.2024.213249

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Low-density granite-based geopolymer for well cementing: The role of burnt lime in enhancing early strength

M.N. Agista,

M. Khalifeh,

R.M. Braga

et al.

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2024

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Expansion and Strength Evolution Mechanism of Granite-Based Geopolymer Based on the Reactivity of Calcium Expansive Agents

Gomado,

Agista,

Khalifeh

2024

ASME Open Journal of Engineering

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In this article, the role of the reactivity of different heat-treated calcium oxides on the properties of a granite-based geopolymer was investigated for low-temperature application to attain high linear expansion and its strength as well as understanding the probable underlying mechanism. The reactivity of the calcium oxide was investigated using the combination of isocalorimetry and BET. The heat-treated calcium oxides were classified as low reactive, medium reactive, and highly reactive with respect to their heat release in water. In addition to this, the resultant effect of the heat-treated calcium oxide was explored in terms of the exothermic behavior, linear expansions, compressive strength, and the pore volume distribution at a dosage of 0.1 wt% of the solid phase of the geopolymer mix. The results indicate that the different reactivities of the calcium oxide impact the linear expansion as well as the compressive strength. The different reactive calcium oxides improved the linear expansion by at least 100%. However, the low reactive calcium tends to decrease the compressive strength by 35% as a result of overexpansion. Therefore, this calls for the optimization of the reactivity of CaO for its application geopolymer for the best properties.

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Expansion and Strength Evolution Mechanism of Granite-Based Geopolymer Based on the Reactivity of Calcium Expansive Agents

Gomado,

Agista,

Khalifeh

2024

ASME Open Journal of Engineering

View full text Add to dashboard Cite

show abstract

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Low-density granite-based geopolymer for well cementing: The role of burnt lime in enhancing early strength

Cited by 1 publication

References 32 publications

Expansion and Strength Evolution Mechanism of Granite-Based Geopolymer Based on the Reactivity of Calcium Expansive Agents

Expansion and Strength Evolution Mechanism of Granite-Based Geopolymer Based on the Reactivity of Calcium Expansive Agents

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