DPS (concrete permanent solidification liquid) detailed data collection

DPS, concrete permanent solidification liquid, was first used in the United States in the 1920s. It was widely used in underground military bunkers in World War II, and it was produced in many countries in the world. It entered China in 1990s and began to be used in some concrete structures built by some workers and civilians in China.

Basic introduction Chinese name: dpsbth:? Deep operation sealer? PH value: 1 1 Appearance: colorless and odorless density: 1.07 0.05 Introduction, reaction principle, performance characteristics, application scope, implementation standards, parameters, acceptance specifications, representative projects and construction scheme are defined as: water-based (in the formulation of domestic national standards, it was first invented by American chemist Hall. Reaction principle DPS waterproof material of concrete permanent setting liquid is water-based permeable crystalline waterproof material (the advantage of water-based waterproof material is that it can continue to react when there is water in the structural layer until it is "sucked dry"). Its waterproof mechanism is that it reacts chemically with free alkali in concrete to generate stable dendritic colloid, which can effectively block micro-cracks and capillary gaps in concrete, and make concrete structure have lasting waterproof function, good compactness and compressive strength. The penetration depth is 20-30mm, and at the same time, it can effectively prevent the corrosion of acid substances, oil stains and engine oil to concrete. Performance characteristics DPS waterproof material is not only the waterproof material of concrete, but also the protective agent of concrete: acid resistance, alkali resistance, corrosion resistance and resistance to high temperature changes. It can also resist the destruction and erosion of concrete by chloride ions. A, don't need a leveling layer and protective layer, directly on the concrete base spray 2 times; 2. The impermeability grade reaches more than S 1 1; Third, the waterproof project of permanent condensation DPS has the same life as concrete. Will not age, will not deteriorate; Fourth, it can be constructed on wet working surface, with short curing period and no fear of rain; Fifth, waterproof construction can be carried out after pouring the bottom plate, which can save a long time; Sixth, it is completely environment-friendly and non-toxic, and can be used as the inner wall of swimming pool sewage pool; Seven, the price is lower than other materials; Eight, the construction is simple, convenient and fast. Each worker can work 1000 m2/day. No maintenance, no watering. Scope of application: it can be used for any concrete base surface (it can be constructed when the concrete surface is wet, but there can be no open water). Such as basements, roofs, kitchens and bathrooms, bridges, tunnels, sewage pools, power plants, etc. Implement the standard dbj01-01-54-2001Quality Inspection and Evaluation Standard for Interfacial Permeable Waterproof Coatings JCT1018-2006 Type II DPS Parameter PH value:/. Appearance: colorless and tasteless; Density:1.07 0.05; Combustibility: nonflammable; Freezing point: 0; Boiling point:100; Surface tension: ≤ 36mn/m; Gelation time: ≤400 minutes; No initial setting; Penetration depth: about 3 cm (strength C25 concrete); Impermeability grade: ≥ s11; Compressive strength: ≥100%; Water absorption for 48 hours: ≤ 65%; Impermeable pressure ratio: ≥ 200%; Frost resistance: 20 ~-20, 15 times surface without pulverization and cracks; Heat resistance: 80,72 hours, no pulverization and cracks on the surface; Alkali resistance: soak in saturated calcium hydroxide solution for 168 hours, without pulverization and cracks on the surface; Acid resistance: soaked in 1% hydrochloric acid solution for 168 hours, without pulverization and cracks on the surface; Corrosion of reinforcement: no corrosion; Chloride ion permeability resistance: ≤1000c; Shelf life: more than 5 years; Environmental protection: in line with GB 18582-200 1 harmful substances in interior decoration materials * * *. Acceptance specification DBJ0 1-54-200 1 quality inspection and evaluation standard for interfacial permeable waterproof coating JCT1018-2006 Ⅱ DPS water-based permeable crystalline waterproof material GB 50208—2002 quality acceptance specification for underground waterproof engineering CECS 65438. 5 km, 80 m deep) Xiamen BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BRT BR 5 m-12 m, floor, roof, etc. Shanghai Pudong Airport Equatorial Guinea Malabo Sewage Treatment Plant Guangdong Huizhou Jinshan Bridge Yunnan Mile Sewage Treatment Plant Guizhou Zunyi Sewage Treatment Plant Nanning Nanhu Tunnel Construction Scheme 1. Key points: ensure that the concrete base surface to be constructed is complete, clean and dense, and not more than 0.3. The strength is above C25. The concrete surface can be wet, but open water cannot be used; Before DPS waterproof construction team with permanent condensed water enters the site, the general contractor shall clean up the scum such as formwork, scaffolding and concrete surface; Cut off the reinforcement of the bolt hole of the concrete foundation through the wall and plug it with quick-setting cement; Check whether there are any small crack lines, and if there are any cracks, repair them by repairing. This method can be used for repairing: a V-shaped groove with a width of about 5cm and a depth of about 3cm is chiseled along the crack line, and the permanent setting liquid DPS is sprayed once, then the quick-setting cement is plastered (to prevent new cracks from appearing in the solidification process of the quick-setting cement, the brush is dipped with water for many times), and then the permanent setting liquid DPS is sprayed once; Honeycombs, pits and leaking ribs on the wall must be chiseled away from the loose concrete on the surface and rinsed with clean water. After the surface layer is dried, spray a layer of permanent setting liquid DPS, then paste it with quick-setting cement, and then spray a layer of permanent setting liquid DPS; 2. After finishing the whole concrete base, clean it up, and there can be no clear water on the surface (the concrete base is wet, no problem). In order to achieve the purpose of uniform spray quantity, it is advisable to pop up a frame chalk line about 2 meters wide on the wall; 3. Spraying permanent condensate DPS on the surface of the whole concrete base with the dosage of 8 m2/kg; Note: DPS waterproof material with permanent condensation is forbidden to be used with water or other substances. No other ingredients can be added; B shake it up and down for about a minute before opening the DPS waterproof material package; C, when spraying permanent condensate DPS, attention should be paid to the slow and uniform spraying speed to prevent leakage and excessive spraying, so that the concrete surface is wet and water marks appear; D is not suitable for outdoor spraying in rainy days. If water surges during construction, it should be sprayed again. Outdoor spraying operation should not be carried out in weather with wind force greater than 5 or above; E. In the scorching sun environment with the temperature higher than 35℃, the concrete surface should be properly watered and wetted to prevent the permanent condensation DPS waterproof material from excessive volatilization; F. It is not suitable for construction when the temperature is below 0℃; G. when spraying DPS waterproof material with permanent setting liquid, a low-pressure sprayer can be used. High-pressure sprayer will cause waste; 4. After the interval of 16-24 hours, spray the permanent condensate DPS again with the dosage of 8m2/kg; 5. In another 24 hours, the closed water test acceptance can be organized. Reference standard Code for Acceptance of Underground Waterproofing Engineering (GB50208—2002), etc. 6. Continue to the next step.