Alkali-activated binders based on technogenic fibrous waste

Klyuev, A.V.; Кашапов, Н. Ф.; Klyuev, Sergey; Ageeva, Marina; Фомина, Е. В.; Sabitov, Linar; Недосеко, И В; Vatin, Nikolai; Kozlov, Pavel; Vavrenyuk, S V

doi:10.1016/j.cscm.2023.e02202

Cited by 2 publications

(1 citation statement)

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“…Moreover, their crystalline nature enhances the mechanical properties of the geopolymer matrix. Anorthite and pyroxene can improve compressive strength, flexural strength and resistance to abrasion and deformation [65]. Acting as nucleation sites, they facilitate the growth of the geopolymer gel network, resulting in a more densely packed and mechanically robust structure.…”

Section: Xrd Analysismentioning

confidence: 99%

Martian Regolith Simulant-Based Geopolymers with Lithium Hydroxide Alkaline Activator

Vitse,

Li,

Boehme

et al. 2024

Buildings

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As humanity envisions the possibility of inhabiting Mars in the future, the imperative for survival in the face of its challenging conditions necessitates the construction of protective shelters to mitigate the effects of radiation exposure and the absence of atmospheric pressure. The feasibility of producing geopolymers using the Martian regolith simulant MGS-1 (as precursor) for potential building and infrastructure projects on Mars in the future is investigated in this paper. Various alkaline activators, such as sodium hydroxide (NaOH), lithium hydroxide (LiOH·H2O) and sodium silicate (Na2SiO3), are employed to investigate their efficiency in activating the precursor. The influence of alkali type and concentration on the mechanical performance of the synthesized geopolymers is examined. Geopolymer samples are oven-cured for 7 days at 70 °C before a compressive strength test. It is found that through the hybrid use of LiOH·H2O and NaOH with optimal concentrations, metakaolin and milled MGS-1 as precursors, geopolymer mixtures with a compressive strength of 30 ± 2 MPa can be developed. The present test results preliminarily demonstrate the potential of Martian regolith simulant-based geopolymers as suitable construction and building materials for use on Mars.

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Section: Xrd Analysismentioning

confidence: 99%