| 摘要 |
<p>A method of accelerating the hardening of concrete by carbonation with a gas consisting wholly or partly of carbon dioxide. Prior to carbonation, the concrete is dewatered and/or deaerated in a closed mould in which a sub-pressure is maintained. The gas which does not react with the concrete binders and/or the water vapour formed during the carbonation reaction are removed from the concrete during carbonation. The concrete may be precarbonated by the supply of carbon dioxide gas during the actual mixing process. The wholly or partly carbonated concrete can be dried by radiation, preferably in the form of high-frequency electromagnetic waves.</p> |
