| abstract |
The present invention relates to a mould release composition comprising an aqueous emulsion of an oil, wherein the emulsion comprises preferably at least one organic acid, preferably at least one ester surfactant such as monoglycerides of lower alkanoic acids; preferably at least one further ester of polyethylene glycol and oleic acid, and preferably at lest one ether surfactant, said composition further comprising colloidal silica, said mould release composition providing an environmentally friendly, biodegradable, mould release composition and surface improver giving a rapid and lasting strengthening of the surface of the concrete rendering the surface more dense or hardened. |