Hydraulic binder composition

摘要

The present invention relates especially to a composition for manufacturing an article comprising one or more superposed layers each less than 5 centimeters thick, comprising a hydraulic binder and at least one compound chosen from an organic compound comprising at least two hydrophilic functions and a hydrophobic chain, and a polyamide oligomer. The use of these additives in the presence of hydraulic binder allows the manufacture of articles and coatings with good protection against water uptake, satisfactory water resistance and good mechanical properties such as breaking strength.

主权项

1. A process for improving a cement or fibrocement article's resistance to water uptake, the process comprising:
mixing a composition comprising
(i) a cement;(ii) an aqueous solution or dispersion of at least one organic compound comprising at least two hydrophilic functions and a hydrophobic chain, or a polyamide oligomer comprising less than 20 repeating units; and(iii) an additive selected from the group consisting of a latex and fibers,wherein the composition has a water/cement ratio of greater than 1 and less than 3.75; and then forming one or more superposed layers of the composition on a surface of the article wherein each layer of the composition has a thickness of less than 5 centimeters.