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This paper investigated the effect of a nanometric silica from a geothermal waste on the compressive strength, microstructure, and reaction products formed on geopolymers cured at room temperature; the thermal stability was evaluated after exposure up to 800°C. The geothermal silica waste replaced 0–20% of the metakaolin and was suspended in the alkaline solution, to avoid agglomeration. Sodium silicate...
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