usage method
◎ Base surface pretreatment
﹥ The concrete surface must be solid and firm without peeling, sanding and looseness.
﹥ All base surface defects shall be repaired in advance. Small pores, bubble holes, etc. can be mixed with powder and water to form a wet ball, and then smoothed
﹥ The surface must be clean, free of dust, grease, falling off, film remover and other Debris material.
﹥ Before applying the slurry, the substrate shall be wetted in advance, but there shall be no ponding. Wipe off the surface water when working on the wet surface.
﹥ Dry sprinkling construction can also be used for waterproof of bottom plate.
﹥ The newly poured concrete surface (including the plastered surface) shall be sown before the initial setting of the concrete before the construction of this product.
CTI Comus COM AS EAL brand cement Basic osmotic crystalline type Waterproof coating
Product Introduction
CO-MA-SEAL of CTI ® SB is a special quartz The powdery inorganic mixed material made of sand, modified crack resistant fiber and a variety of active chemicals is recognized as a rigid waterproof material in the world at present, and has the name of "biological cement" in all. The physical, mechanical and chemical activity of SB is far from that of ordinary Type I products. Type II products have better impermeable pressure, second impermeable pressure and higher osmotic pressure ratio than Type I. Therefore, the repair ability for later cracks is also stronger and more reliable. At the same time, SB requires much shorter curing period than other similar materials, which is more practical.
CO-MA-SEAL ® SB has the main characteristics of infiltrating crystallization, increasing the density of concrete, improving the strength of concrete, strong impermeability, good self-healing performance, strong cohesion, corrosion resistance, easing aging, preventing steel corrosion, harmless to human body, simple and fast construction, etc, In particular, its active substances have the advantage of self-healing and repairing cracks for many times to produce secondary impermeability when cracks and leakage are caused by uncertain factors in the later stage of the concrete structure, and its waterproof property increases with time, which is incomparable to other waterproof materials. In recent years, cement-based permeable crystalline waterproof materials have been more and more used in various waterproof projects, especially in hydraulic, tunnel, basement and other waterproof projects. Its unique and good waterproof performance has also been confirmed by a large number of engineering examples, and it belongs to the waterproof materials popularized in the national standard Technical Code for Waterproofing of Underground Works.
Waterproof mechanism
CO-MA-SEAL ® The unique active chemical substances in SB utilize the inherent chemical characteristics and porosity of cement concrete itself, use water as a carrier, and by means of infiltration, transport and fill in the concrete micropores and capillaries, to promote the calcium (OH) produced in the hydration process of dicalcium silicate and cement two And partially hydrated components to form insoluble dendritic crystal calcium sulphoaluminate (3CaOAl two O three CaSO four ·32H two O) It is integrated with the concrete, so that water and other liquids from any direction can be blocked, achieving the effect of long-term waterproof, moisture-proof, reinforcement protection and strengthening the strength of the concrete structure; At the same time, its active substance is inorganic matter that does not age. When the concrete structure cracks and leaks due to uncertain factors in the later period, it can self heal and repair cracks for many times to produce secondary impermeability, which can directly play a role in reinforcing, delaying structural cracking, and preventing water leakage caused by cracking.
(The authentic and qualified cement-based permeable crystalline waterproof material will heat up after mixing with water! There will be small bubbles, and it will shrink when mixing. After construction, if there is no water, it must be watered for wetting and curing. Therefore, it can repair the wet back surface for plugging. It takes 3-5 days for ordinary cement-based permeable crystalline waterproof materials to be cured, while it only takes 3-5 hours for our cement-based permeable crystalline waterproof materials to be cured, so the effect is easier to guarantee!!)
Construction method
﹥ 32% water can be added in the first construction, which is more conducive to the penetration of active substances in materials. The amount of water added in the second construction is 30%. The amount of water added shall be well weighed and strictly executed during construction, and it shall not be added at will. When constructing the wet surface of the basement with back water, the amount of water added for two times can only be 30%.
﹥ SB feels difficult to stir at the beginning after adding water, and it will heat up if the amount of water is not enough, but remember not to add additional water at this time. After mixing evenly, the mixture will become thinner and thinner. The mixture can be painted only after mixing thinly. When there is a lot of mixture, use a hand-held mixer to mix. Brush while stirring.
﹥ When the stone paint spray gun is used for spraying, the pressure, the distance between the nozzle and the base surface shall be reasonably adjusted so that the slurry can be sprayed to the base surface at a certain pressure without rebounding.
﹥ The mixed powder shall be used up within 20 minutes of operation. Do not add water to the fast setting slurry before reuse.
﹥ During construction, pay attention to prevent the slurry from accumulating too thick or missing brush somewhere. After the previous coating loses light, the second coating can be applied for about 20 minutes to 1 hour.
﹥ It shall be painted 2-3 times when it is used for repairing the leakage on the back surface.
﹥ The curing can be carried out after final setting (1.5-2 hours). The curing period is 3-5 hours. It is strictly prohibited to directly flush with water during curing. It must be sprayed with fog water for curing. After spraying curing, it can be covered with wet straw curtains. No curing is required during construction in closed damp space. When the weather is hot or windy, the whitening of the base surface must be cured by spraying in time.
﹥ Reference dosage: 1.5kg/m2 (2 coats)
Executive standards GB18445-2001 Cement based Permeable Crystalline Waterproof Material Type II
CECS195-2006 Technical Specification for Application of Polymer Cement and Permeable Crystalline Waterproof Materials
JC1066-2008 Limit of Harmful Substances in Building Waterproof Coatings Index Requirements for Class A Environmental Protection Waterproof Coatings
Packaging and storage 40kg/bag, stored in a cool and dry place (1 ℃ - 35 ℃), with a shelf life of one year, and should be sealed and moisture-proof in time after opening.
