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http://dx.doi.org/10.5345/JKIBC.2018.18.1.051

Evaluation on Compressive Strength Development and Thermal Conductivity of Cement Pastes Containing Aerogels with Hydrophilic Surface Treatment  

Ahn, Tae-Ho (Department of Architectural Engineering, Kyonggi University Graduate School)
Park, Jong-Beom (Department of Architectural Engineering, Kyonggi University Graduate School)
Yoon, Hyun-Sub (Department of Architectural Engineering, Kyonggi University Graduate School)
Yang, Keun-Hyeok (Department of Plant.Architectural Engineering, Kyonggi University)
Publication Information
Journal of the Korea Institute of Building Construction / v.18, no.1, 2018 , pp. 51-57 More about this Journal
Abstract
The objective of the present study is to examine the feasibility on the development of high-insulation concrete using aerogels with hydrophilic surface treatment. To prevent the segregation and enhance the dispersibility of agerogels in the cement pastes, the substrate of aerogels was modified to be hydrophobic property using surfactant. The modified aerogels were added from 0% to 100% of the cement volume at the interval of 25% under the constant cement content. Some cement pastes showed segregation phenomenon and flocculation of aerogels during mixing phase. The addition of aerogels decreased the compressive strength of cement pastes but enhanced the thermal conductivity. The thermal conductivity of pastes with 100% aerogels was lower by 43% when compared with that measured in the conventional paste. To improve the compressive strength and insulation capacity of concrete containing aerogels, a reliable surface treatment method of aerogels needs to be further investigated.
Keywords
aerogel; paste; surface treatment; insulation; thermal conductivity;
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Times Cited By KSCI : 2  (Citation Analysis)
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