Study on the aerogel cement-based composites for geothermal insulation cementing
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W Zhu, S Cui, Q Kong, B Wang, H Tan, X Zheng
Energy and Buildings, 2025
Elsevier
Geothermal wells experience significant heat loss during energy extraction, challenging conventional cementing to balance mechanical integrity with thermal efficiency. To address this, hydrophobic silica aerogel was synthesized via the sol–gel method and composited with cement to develop silica aerogel cement-based composites (SAC) for harsh geothermal conditions (60–100℃, 0–36% NaCl). Experimental results demonstrate that the thermal conductivity of SAC containing 7% aerogel (0.1406–0.215 W/(m· K)) is significantly lower …
