ADMIXTURE AND METHOD FOR FREEZE-THAW DAMAGE RESISTANCE AND SCALING DAMAGE RESISTANCE OF CEMENTITIOUS COMPOSITIONS

• Main Authors: ONG, FRANK, FETE, RAYMOND, PAPONETTI, RICK, SMITH, JAMES CURTIS
• Format: Patent
• Language: English; French
• Published: 22.09.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; HUMAN NECESSITIES; HYGIENE; LIME, MAGNESIA; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

A freeze-thaw damage resistance and scaling damage resistance admixture for a cementitious composition including an aqueous slurry comprising a water insoluble superabsorbent polymer and expandable polymeric microspheres. A method for preparing a freeze-thaw damage resistant and scaling damage resistant cementitious composition including forming a mixture of a hydraulic cement and an admixture including an aqueous slurry of a water insoluble superabsorbent polymer and expanded polymeric microspheres. La présente invention concerne un adjuvant conférant une résistance au gel-dégel et à l'écaillage pour une composition cimentaire comprenant une suspension aqueuse contenant un polymère superabsorbant insoluble dans l'eau et des microsphères polymères expansibles. L'invention porte également sur un procédé de préparation d'une composition résistant aux cycles gel-dégel et à l'écaillage, qui consiste à former un mélange d'un ciment hydraulique et d'un adjuvant contenant une suspension aqueuse d'un polymère superabsorbant insoluble dans l'eau et de microsphères polymères expansées.