Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Mon, Dec 16, 2024
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Showing 1 results for Metamontmorillonite
Feasibility of Design One-Part Sodium Silicate Activated
Metamontmorillonite
-Limestone Cements
Nailia Rakhimova, Vladimir Morozov, Aleksey Eskin, Bulat Galiullin,
Volume 20, Issue 3 (9-2023)
Abstract
In this study, the potential of calcined montmorillonite as a primary precursor for one-part alkali-activated cement incorporated with high percentage of limestone, is evaluated. Comparative studies on the properties of the sodium silicate activated metakaolin-limestone and metamontmorillonite-limestone fresh and hardened cement pastes depending on several formulation and processing parameters (precursor nature, dosages of limestone and alkali reactant, curing conditions) showed that metamontmorillonite exhibits reactivity comp
arable to that of metakaolin in the studied cement systems.
The mechanical performance of o
ptimal alkali-activated cement formulations consisted of 20-30% of
metamontmorillonite
and 70-80% of limestone
is provided by both reactivity of metamontmorillomite under sodium silicate activation and the filler, nucleation, and chemical effects of the raw limestone.
The reaction products and microstructures of alkali-activated metamontmorillonite-limestone cement-based hardened pastes were investigated using thermal, XRD, and SEM/EDS analyses.
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