The waterproof slurry is a waterproofing agent made by mixing calcium chloride, aluminum chloride, and other metal salts with water in a particular proportion. The product looks like a light yellow liquid.

It can interact with cement and water after the waterproof slurry is mixed into cement mortar, it can interact with cement and water. During the process of condensation and hardening of the mortar, compound salts are generated, which can fill the gaps in the mortar, thereby improving the compactness and waterproof performance of the mortar. The product has the properties of setting, early strength, pressure resistance, waterproofing, impermeability, and frost resistance. It can be formulated with waterproof cement slurry, mortar, or concrete. It is suitable for painting waterproof layers, blocking leakage points, and mixing reinforced concrete and cement mortar.

The construction points of waterproof slurry are as follows:

(1)Construction operation instructions

① For general projects, apply waterproof mortar twice, then waterproof slurry once. There should be a gap of at least one day after each application, and watering should be done first, then paint again.

② Add 3% to 7% of the cement mass into water and mix the concrete or cement mortar plaster layer.

③ When mixing concrete or mortar, the waterproof slurry should first be added to the mixing water and stirred evenly.

④ Must use the ordinary Portland cement of grade 325 or above. Yellow sand and stones need to be clean and have edges and corners.

⑤ Before applying the waterproof layer, the surface of the building should be cleared of loose matter and flushed with water.

⑥ Summer construction must prevent exposure to the scorching sun; winter construction must strengthen anti-freeze measures.

(2) Quantity used

Each 1kg of waterproof slurry can cover an area of approximately 8 m² for 3 degrees. It must be mixed as needed and used up within 30 minutes after mixing.

Inorganic aluminum salt waterproofing agent

Inorganic aluminum salt waterproofing agent is an oily liquid made from aluminum salt and calcium carbonate as the primary raw materials through the reaction of various inorganic chemical raw materials. Its color is light yellow or brownish yellow. It has complete functions of anti-leakage, anti-freeze, heat resistance, pressure resistance, early strength, and rapid setting, and is non-toxic, odorless, and pollution-free.

The inorganic aluminum salt waterproofing agent dosage is 3% to 5% of the cement. When inorganic aluminum salt is mixed into concrete, it reacts chemically with Ca(OH)₂ generated after hydration of cement to generate aluminum hydroxide and hydroxide. Iron and other cementitious substances interact with the calcium aluminate hydrate in the cement to create double-salt calcium sulfoaluminate crystals with specific expansion properties. These colloidal substances and crystals fill the capillary pores and gaps of the concrete and mortar structures. It blocks the channels for moisture migration and improves concrete’s compactness, waterproofing, and impermeability.

Inorganic aluminum salt waterproofing agent is suitable for rigid self-waterproofing and surface waterproofing layers of concrete and reinforced concrete structures. It can be used on roof planes, toilets, basements, tunnels, sewers, water towers, bridges, reservoirs, oil pools, building slab joints, New and old waterproofing projects such as dam grouting, grain storage, sewer well facilities, and wall moisture proofing.

The operation method of using an inorganic aluminum salt waterproofing agent is as follows:

(1) Cast-in-situ structural floor

Base cleaning → Brush with waterproof mortar → Apply waterproof mortar → Compact and polish → Maintenance

(2) Repair the roof of the old building

① Remove debris and oil stains from the surface of the base layer. There should be no looseness or hollows. Rinse the joints and seam lines with water;

② Apply waterproof slurry as the bonding layer;

③ Apply a layer of waterproof mortar to a thickness of 25mm, and use an iron scraper to compact and smooth it repeatedly. An expansion joint is left for every 36m², and the expansion joints are caulked with tough waterproof ointment.

(3) Prefabricated structural building roof

Clean the base layer → Fill joints and seams with sealant → Set up metal mesh → Brush with waterproof mortar → Apply waterproof mortar layer → Maintenance.

① Cleaning of the base layer: Remove debris on the surface and in the seams of the joints. There should be no looseness or hollows and caulking with tough materials. Sprinkle large grains of sand on the caulking surface in time to bond with the waterproof mortar layer;

② Set up a metal mesh, generally using 3mm steel bars or 12-14 gauge iron wire, with a spacing of 200mm×200mm;

④ Apply waterproof mortar layer: thickness is 30mm~40mm (including leveling layer), compact and polish repeatedly;

⑤ Expansion joints are left at each support beam, with a width and depth between 10mm and 20mm, and are caulked with tough waterproof materials;

⑥ The waterproof surface layer should be covered and maintained with straw curtains or sawdust. The maintenance period is 14 days.

(4)Construction of basements, toilets, pools, dams, and channels

① Grassroots cleaning, the same as before;

② Brush with waterproof slurry;

③ Apply a waterproof base layer with a thickness of 10mm to 15mm, and repeatedly press it with a wooden trowel to remove the pockmarked surface;

④ Brush with waterproof slurry;

⑤ The joints of each layer should be staggered, and the distance should not be less than 100mm;

⑥ Carry out maintenance; the maintenance period is 14 days.

(5) Precautions

① The original base layer should be clean, rough, and moist. It is not suitable for construction when the temperature is high;

② The mixing time of waterproof mortar or waterproof concrete is longer than that of plain mortar and plain concrete;

③ The waterproof mortar must be repeatedly calendered and compacted, and the waterproof concrete must be vibrated and compacted;

④ The roof of the open-air building should be covered with a sprinkler and maintained for 14 days.

The waterproofing agent is successfully developed based on the quality of the inorganic aluminum salt waterproofing agent. It is a light yellow liquid mixed with various inorganic salts with inorganic salts as the main body. It is anti-leakage, anti-freeze, heat-resistant, pressure-resistant, and early-strength. It has an outstanding quick-setting function, strong anti-aging performance, cold construction, and is safe and easy to operate.

The product is suitable for the interior and surface of reinforced concrete, cement concrete, and masonry structures, that is, top planes, toilets, building slab joints, underground houses, roof floors of grain depots, civil air defense projects, tunnels, sewers, water towers, bridges, water storage All new and old waterproofing projects such as oil ponds, dam grouting, sewer well facilities and wall moisture proofing.