Cementitious capillary crystalline waterproof coating (CCCW) is a kind of light gray powder water proofing material which is made of Portland cement (commonly known as Portland cement), quartz sand and other inorganic materials as raw material, infiltrated into active compounds and other auxiliary materials. It is a green, non-toxic, tasteless and nuisance free product. It is a rigid waterproof material, and its quality is up to GB18445-2012 national standard.
This product is based on foreign advanced technology and developed by a large number of engineering and technical personnel in China. It is a new efficient inorganic waterproof and anticorrosive coating. Before the introduction of the product, it has been successfully applied in tens of thousands of projects in more than 100 countries and regions of the world. Its superiority in performance and reliability in quality can be well known worldwide.
The waterproof mechanism of this product is that the active compounds contained in the material react with water to permeate the pores of the concrete structure with water as the carrier. The active compounds infiltrated into the pores inside the concrete interact with the free calcium oxide in the concrete to form insoluble water-soluble dendritic fibrous crystals (calcium sulphoaluminate). The water absorbs and expands from the pores in the structural holes, and makes the surface of concrete structure gradually form a dense impervious area to the depth, which greatly improves the overall impervious capacity of the structure. Due to the bondage of hydration space and C-S-H gel, a large amount of gelatinous crystals are formed in the waterproofing coating of C waterproof coating, which plays a role of compacting and impermeable in the coating. With the development of time (usually 14~28 days), the amount of crystallization is also increasing. The gel crystals in the waterproof coating and the penetration and crystallization inside the concrete structure improve the density of the concrete structure, that is, the permeability resistance of the concrete structure is enhanced. As the hydration reaction of cement is an incomplete reaction process, the reaction is still carried out after many years without loss of water. In the later hydration process, it can also continue to catalyze active compounds to form crystals. Therefore, even if the concrete structure is penetrated again or partially damaged and cracked (cracks less than 0.4mm), it can self repair under the action of crystallization. Healing has the capability of multiple impermeability, which essentially improves the repeated cracking and seepage caused by the instability of the volume of ordinary concrete structures.
1, dual waterproof performance:
The penetrated crystal produced by the product can penetrate into the concrete structure and block the structural pore. No matter how deep the penetration is, it can play a waterproof role in the structure. At the same time, the coating on the base surface of the concrete structure can play a role of compensation and contraction due to its micro expansion performance, so that the structural base surface after construction can also have good crack resistance and seepage resistance. Use.
2. Strong resistance to water pressure:
This product can withstand strong water pressure for a long time, and brush two layers of material on a concrete specimen with a thickness of 50mm and a compressive strength of 13.8Mpa. It can withstand at least 123.4m of water pressure (1.2Mpa).
3, has a unique ability to self repair:
This product is inorganic waterproof material, the crystal formed will not produce aging. After many years, crystal structure can still activate cement and produce new crystals. The crystal will continue to tighten, seal or re seal less than 0.4mm cracks or pores, and complete the process of self repair.
4. It has the functions of corrosion protection, aging resistance and reinforcement.
This product can self repair the cracks and gaps below 0.4mm, make the concrete structure more dense and increase the strength of the structure, thereby greatly reducing the invasion of chemical substances, ions and water, and protecting the steel bar from rust. The crystal does not affect the breathing capacity of concrete. It can maintain the normal air permeability inside the concrete. The moisture and moisture content of the concrete will prolong the service life of the building on the basis of keeping the concrete structure free from erosion. At the same time, the concrete structure treated by the material effectively prevents the spalling, weathering and damage caused by freezing and thawing.
5. It has the reinforcing effect on the concrete structure.
The concrete structure after the construction is activated due to the activation of the unhydrated cement, which strengthens the concrete structure and generally improves the 20~30% of the concrete strength.
6, has a long-term waterproof effect:
The physicochemical reaction produced by this product starts from the surface or adjacent parts of the base surface, and gradually affects the internal structure and permeates over time. Under normal temperature, 28 days later, the active compound can penetrate the crystal into the concrete structure 10~35cm (the density of concrete layer is sparse, and the penetration depth will be deeper). The crystal formed is stable without decomposition, and even if the waterproof coating is worn or scraped, it will not affect the waterproofing effect, because its active ingredients have penetrated deeply into the concrete structure.
7. It has the advantages of simple construction method, saving labor and time.
This product is simple and convenient to construct. It can be constructed by brush, roller coating or scraping. It can also be constructed by dry spreading. Under normal conditions, once the painting is completed, the construction task can be completed, and there is no need for multiple brushing, saving time and labor.
8, comply with environmental protection standards, non-toxic, pollution-free and pollution-free:
The active compounds in this product are water-soluble compounds, which are not irritating to human skin, and can be used for drinking, food, swimming pools, reservoirs and other engineering projects.
Scope of application:
This product can be widely used in tunnel, dam, reservoir, power station, nuclear power station, cooling tower, subway, overpass, bridge, underground continuous wall, airport runway, pile head pile foundation, waste water treatment pond, reservoir, water supply plant, industrial and civil building basement, roof, toilet bath and other waterproof construction, as well as concrete building facilities and all other defects of concrete structure. Repair and plugging.