Cement of high specific heat and high thermal conductivity, obtained by using silane and silica fume as admixtures

Authors
Citation
Ys. Xu et Ddl. Chung, Cement of high specific heat and high thermal conductivity, obtained by using silane and silica fume as admixtures, CEM CONCR R, 30(7), 2000, pp. 1175-1178
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
CEMENT AND CONCRETE RESEARCH
ISSN journal
0008-8846 → ACNP
Volume
30
Issue
7
Year of publication
2000
Pages
1175 - 1178
Database
ISI
SICI code
0008-8846(200007)30:7<1175:COHSHA>2.0.ZU;2-Z
Abstract
Cement paste of high specific heat and high thermal conductivity has been a ttained by using silane and silica fume as admixtures. These admixtures tog ether cause the specific heat to increase by up to 50% and the thermal cond uctivity to increase by up to 38%. Silane acts to increase the specific hea t and increase the thermal conductivity. Silica fume acts to increase the s pecific heat and decrease the thermal conductivity. Silane provides a netwo rk of covalent coupling among the silica fume particles. The network increa ses the compressive strength and modulus, decreases the compressive ductili ty, enhances heat conduction through phonons, and increases the specific he at through vibrations. (C) 2000 Elsevier Science Ltd. AII rights reserved.