Concrete anti-carbonation coating Beijing factory

I. Introduction PCS concrete anti-carbonation coating is a high performance anti-carbonation emulsion polymer-modified cement-based composite emulsion copolymer composition contains a unique, cross-reactions cause the formation of polymer chains in the cement - cement hydrates pass each other network structure, resulting in a combination of chemical and mechanical cohesion and adhesion, improved tensile strength and bond strength, surface coated in concrete and firm bond with the formation of high strength and tough durable elastomeric coating protective layer, which can effectively prevent environment carbon dioxide, chloride, oxygen and water, acid rain and other corrosive media erosion of structural materials. The coating consists of high performance polymer emulsion, a variety of additives (liquid material, A component) with a modified cement-based materials (powder, B component) two-component composition of the cured coating is both a high flexibility, there are high durability of the new material is protected closed inorganic material molecular materials. Second, use widely used in anti-carbonation water utilities, ports, tunnels, bridges and other industrial and civil buildings of reinforced concrete structures, impermeable, waterproof, corrosion, improve the structure of life. Such as cooling towers, aqueducts, locks, dams, bridges, reservoirs, sewage treatment pond, concrete poles and other projects. Third, the characteristics (1) Good bonding strength and bonding capacity, can be painted in a variety of building material surface; (2) resistance to atmospheric corrosion, UV radiation, wear resistance under normal use conditions, the service life can be up to more than 20 years; (3) excellent flexibility to further expand both closed microcracks, but also resistance to the new generation of cracking due to the concrete matrix expansion and contraction caused by prevent moisture from entering the concrete; (4) have Good waterproof sealing performance and prevent outside rain erosion of the structure; (5) good resistance to harmful gases, such as carbon dioxide, oxygen, salt spray, etc. permeability, to prevent concrete neutral, mild chemical and corrosion resistance, to prevent chlorine ion and acid, alkali, salt substances into the concrete, to prevent steel corrosion; (6) water-based paint, non-toxic, tasteless, non-polluting. (7) provides needed variety of colors, dark gray, gray, beige and light blue as the standard color. Fourth, the construction method of the base surface treatment (1) concrete surface: The base surface should be hard, smooth, rough, clean, wet. Base punch, acts of injustice, you should use the angle grinder polished smooth; base surface dust, floating pulp, oil and other applications wire brush to get rid of, loose, hollowing parts should be chiseled; greater use of the defective product deployment polymer mortar for leveling all kinds of gaps, cracks or cellular, Pock and other irregularities at the use of this product formulated polymer putty. Before brushing anti-carbonation coating, spray concrete surface should be pre-cleaned and wet treatment, Zaishi paint brush without a wet feeling a little dry for some time. (2) the bonding carbon fiber cloth surface: the normal process of bonding carbon fiber cloth, it should be after the last brushing glue stick surface layer of a clean quartz sand (quartz sand 40 to 70 mesh on its surface even point, point stick It should be thin and uniform), and rolled out with a roller, to be carried out after brushing paint surface dry. Carbon cloth and pasted concrete surface transition area should be used polymer putty, smooth transition. (3) bonded steel surface: the normal process after the end of stick steel construction, remove grease, dirt and rust and other attachments steel surface, then brushing two epoxy iron red antirust paint, rust-proof paint is dry when the even point sticky layer on its surface and clean quartz sand, and rolled out with a roller, to be carried out after brushing paint surface dry. (4) The putty: If the base surface is uneven, lines deep, surface coating or paint can not cover the requirements of high decorative features, flexible water-resistant putty overall Scraping the base surface, then brushing PCS anti-carbonation paint brush, in order to achieve better aesthetic results. 2. Before each paint mixing paint formulation should first liquid feed ingredients and mix well. Paint quality ratio are: A component: B component: water = 1: 3: (0-0.2). When brushing the bottom, add water desirable high limit. Liquid feed and powder ratio should be measured accurately, using a stirrer, stir, stirring time in about 5min, mixing a good paint should be uniform color, no dough, precipitation. After the stirring was completed before brushing paint standing 3min. 3. Paint brush coating should be layered multi-channel brushing is complete. When the base layer is not approved putty, paint brush should be 4 to 5, so as to form a coating thickness of 1 ~ 1.2mm; when brushing 3 to putty to form a coating thickness of about 0.75mm. Can be carried out (even in summer recommended drying season, the interval time is not less than 1.5h) after brushing must be before the road is dry tack coat. The current road construction is completed after brushing, you should check whether the coating thickness uniformity, non-holidays, can be carried out after brushing after passing road construction. Brushing tools can be a brush or a lint roller. Should roll coating roll back and forth a few times more, so do not stay between the coating and the base layer of bubbles, firmly bonded. Brushing should be alternated every time brushing direction of the coating. If precipitation in use should pay attention to any paint stir. The final coat curing coating finished construction should not rain within 12h. If the coating is to be contacted water, conservation of natural drying is required before more than 7d. When closed humid environment, construction, humidity and ventilation should be strengthened. V. Performance Specifications Item Specifications Item Specification initial setting time (h) ≤6 7d compressive strength (MPa) ≥25 Final setting time (min) ≤8 28d compressive strength (MPa) ≥40 7d flexural strength ( MPa) ≥6 28d flexural strength (MPa) ≥7 and concrete surface bond strength (MPa) ≥1.5 impermeability pressure 28d (MPa) ≥0.9 VI, packaging and storage A component (liquid material): 20kg / barrel; Paint the shelf life of six months. Paint should be stored in a cool, ventilated, dry place to prevent the sun and rain, the storage temperature of 5 ~ 35 ℃.