PRODUCT FOR REINFORCING AND PROTECTING THE FACADE OF BUILDINGS AND HISTORICAL MONUMENTS AND IN-SITU IMPLEMENTATION PROCESS

摘要

The invention relates to a composition intended for reinforcing and protecting the facades of buildings and historical monuments and to a process for in-situ implementing the same. According to the invention, the product comprises 15...30% a calcium source, 10...20% a phosphate source, 1...5% a collagen source, 2...5% biologically active extracts or antimicrobial aromatic oils in admixture with synthesis biocides, in a ratio of 1:1...1:3, 5...10% an ecologically acceptable solvent, 10...15% an antifreeze agent, 15...20% a film-forming agent, 0.01...0.03% natural pigment and, for the remainder up to 100%, water, the percentage being expressed by weight. The process claimed by the invention consists in cleaning the mineral support and drying it, filling the fissures, cracks and microcraters with the claimed composition, biocementation thereof in situ at atmospheric temperature and pressure, by exposing them to air for at least 72 h, after which, onto the repaired defects and onto the rest of the surface, the composition diluted with water in a ratio of 1:3...1:9 is applied, by brushing, so that, when dried, results in a thin film of about 10 μm for long-term protection against biodeterioration