| abstract |
The present invention relates to a process for providing a fiber cement product, the process comprising the steps of (a) providing an uncured fiber cement product, (b) curing the uncured fiber cement product, (c) optionally abrasive blasting of at least part of the surface of the cured fiber cement product, (d) treating the cured fiber cement product with CO2 (so-called carbonation) at a concentration of 0.01 to 100%, at a temperature of 5 to 90° C., relative humidity of to 99% for a period of 1 minute to 48 hours. The obtained fiber cement products show less efflorescence. |