Abstract
The specific heat of cement paste was increased by 12% and the thermal conductivity was decreased by 40% by using as admixtures silane-treated silica fume and silane-treated carbon fibers. The specific heat was increased by the carbon fiber addition, due to fiber-matrix interface slippage. The increase was in the order: as-received fibers, ozone-treated fibers, dichromate-treated fibers, and silane-treated fibers, due to the increasing contribution of the movement of the fiber-matrix covalent coupling. The specific heat was increased by the silica fume addition, due to slippage at the interface between silica fume and cement. The increase was enhanced by silane treatment of the silica fume. Silane treatment of carbon fibers decreased the thermal conductivity.
| Original language | English |
|---|---|
| Pages (from-to) | 1117-1121 |
| Number of pages | 5 |
| Journal | Cement and Concrete Research |
| Volume | 29 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1999 |
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