TD-DAS cementitious capillary crystalline waterproofing materials cementitious capillary crystalline waterproofing coating the main ingredient of Portland cement, selected quartz sand, special active chemical substances as a gray powdery material, waterproof mechanism lies in the water as a carrier guide water through strong permeability, transmission and capillary pores in concrete, filling, physical and chemical reactions take place to form a water-insoluble dendrite-like crystals. Crystal and concrete structure was integrated into the overall closed waterproof layer, cut off the flow from any direction and other liquid erosion. Achieve a permanent waterproof, chemical resistant purpose, but rebar protect and enhance the structural strength of concrete. I. Features 1, with exceptional water capacity. Brushing the concrete interface layers of the material can withstand water pressure of 1.5MPa or more. 2, in the concrete interface brushing the material physical and chemical reactions produced by penetration into the concrete, the penetration depth of up to 200mm and above. And it has a unique breathing, anti-corrosion, anti-aging, protect the steel capacity. 3, environmental protection, non-toxic, pollution-free. 4, low temperature: -40 ℃, 5h, no cracking, peeling skin, no change. 5, in the concrete form of the material interface brushing water-insoluble dendrite-like crystals, the gap dense, clogging waterways penetration, concrete cracks can be filled with less than 0.4mm of self-repair. 6, can be maintained to ensure superior water effects at 3.0 to 11.0 PH value, temperature -30 ℃ ~ 120 ℃ situation and to protect and improve the strength of concrete reinforced. 7, good compatibility with other materials, which can be arbitrarily brushing the surface of the waterproof layer of cement mortar, lime cream, paint, resin coatings and other materials. 8, the construction method is simple, saving labor. Concrete leveling layer interface do not need, do not need a protective layer after brushing. Second, the scope subway, basement, concrete pipes, reservoirs, power stations, cooling towers, dams, concrete boat, tunnel, dock caisson, roof plaza, parking platform, elevator pit, sewage treatment plants, swimming pools, nuclear power plants, food storage library , cesspools, bridge structure, aquarium, fish hatchery was, silos, highways, airports, parking apron, oil pool, playground, concrete pavement and toilet. Third, performance indicators performance standards: GB18445--2001 No. Test Item Specification Ⅰ Ⅱ 1 Stability Qualified 2 Setting time Initial setting time min≥ 20 final setting time h≤ 24 3 flexural strength Mpa≥ 7d 2.80 28d 3.50 4 compression strength Mpa≥ 7d 12 28d 18 5 Wet base surface bond strength Mpa≥ 1.00 6 impermeability pressure (28d) Mpa≥ 0.8 1.2 7 Second impermeability pressure (56d) Mpa≥ 0.6 0.8 8 impermeability pressure ratio (28d) % ≥ 200 300 Fourth, the construction method, check the concrete structure; all the concrete must be painted carefully check whether there are structural defects, such as cracks, honeycomb hemp planar inferior surface shall repair chisel, clean up, with paddle before making a waterproof gray fill. 2, clean up grass surface; the need to maintain a clean surface of base to provide adequate open capillary system so conducive to penetration. Total cement base surface wipe, dust, oil, etc. to be removed. Whether new or old concrete pouring, have moistened with water, but you can not have clear water. Newly poured concrete surfaces after pouring 20h before brushing. 3, waterproof layer construction; ① brushing or spraying: in ready concrete surface, a mass ratio of brushing or spraying. Ratio: powder: water = 2: 1; dosage: 1.0-1.5kg / m. Construction requires a complete coating. Pay attention to cleaning and coating the base surface and wet treatment (fully wet, but not out of water), as found during the construction of local base or too dry, it must be re-wetted. Coating sun exposure and continued for 1 to 2 days moisten with water conservation. Stir spices should pay attention to the slurry mix did not have to open a dry pellet. Construction, the required deployment of a good paste was applied uniformly in need waterproof base surface. When the positive side waterproof construction, due to inability to predict the possible seepage parts, should slightly increase the amount to maximize the waterproof coating impermeability, and pay attention to deal with honeycomb substrate surface. Dorsal surface construction, the small leakage are easy to detect, in the first before plugging waterproof construction. ② sprinkle dry powder: Before pouring the concrete mixture No, Isaac dry powder form by a certain amount of the product to be sprinkled on bedding, sprinkle dry time of 30 min before pouring concrete. ③ before concrete filled after discharge is not completely frozen, Isaac dry powder form by a certain amount of the product spread on the concrete surface, and then the concrete surface to be compacted. V. Notes 1, the material contains cement, crystalline silica sand and other ingredients, should not be touched with bare hands, the construction should wear gloves. 2, the construction, because the dust may cause skin irritation and eye and respiratory tract irritation, it is recommended to wear glasses and dust masks, wash hands after construction. 3, the construction site to be ventilated, not without ventilation, construction in a confined environment. Six, product packaging and storage 1, closely woven bags or sealed plastic drum. 2, the materials to be placed in dry place, avoid exposure, rain. 3, the product storage period of 12 months. Implementation of the standards: GB 18445-2012 "cementitious capillary crystalline waterproofing material" technical performance indicators (performance standards GB18445-2001)