The Chlorinated Butyl Latex Waterproof Mortar is a composite material made by blending chlorinated butyl latex waterproofing, special cementitious materials, and aggregates through a special process. The cationic chlorinated butyl latex is a high polymer modified based polymer waterproof and anticorrosion system; it is a high polymer latex composed of imported epoxy resin modified latex, domestic chlorinated rubber, polyacrylate, synthetic rubber, various emulsifiers, and modified latex. It is a high polymer waterproof and anticorrosion material added through processes such as plasticizing, blending, and calendering, with base materials, appropriate chemical auxiliaries, and fillers. This product is manufactured in accordance with national industry standards and high-grade approvals, using imported materials and domestic additives, and is recommended by the national well-being residential construction program.
Chloroprene latex waterproofing/anti-corrosion mortar boasts a long service life, easy application, and a lifespan exceeding 50 years when submerged in water.
This mortar boasts excellent bonding, crack resistance, frost resistance, water-proofing, anti-corrosion, chloride ion permeation resistance, wear resistance, and aging resistance. It is suitable for waterproofing, anti-corrosion, protective coating, and repair projects for steel and reinforced concrete structures in hydraulic, port, road, bridge, metallurgical, chemical, and industrial as well as civil construction projects.
Scope of Use:
1. Concrete reinforcement for building structures, waterproofing and leak prevention for civil defense facilities
2. Reservoir dam and port seepage treatment
Chemical Resistant Buildings for Hot Tubs, Landfills, Chemical Storage Warehouses, and Chemical Tanks
4. Concrete repairs for roadways, bridges, tunnels, and culverts
5. Industrial and民用building roof, restroom, and basement waterproofing treatments
6. Structural steel and reinforced concrete waterproofing
7. Can be applied directly on damp substrates, offering excellent adhesion to various base materials.
Four: Technical Specifications (Reference Standard: GB/T50212-2002)
1、
Storage Stability: No visible precipitation within 3 months at 5~40℃ (slight stratification may occur at extreme temperature differences or low temperatures; stir well before use).
3. Appearance: Uniform milky white
Note: The total solid content of chloroprene latex varies due to different synthesis methods and purity levels. For high-temperature polymerization with a purity above 99%, a total solid content of over 20% is sufficient to meet the performance requirements of the formulated product.
Section 5: Construction Overview
1. Terms of Use:
①. The ideal construction temperature for chloroprene latex waterproof mortar should be between 10-35°C. When the construction environment temperature falls below 5°C, heating and insulation measures should be taken. Construction should not be carried out in strong wind, rain, or high temperatures under direct sunlight.
②. Chlorinated polyvinyl chloride (CPVC) latex waterproof mortar should not be applied on cement mortar or concrete substrates that have not been cured for at least 3 days.
When purchasing butyl rubber latex separately and mixing mortar on-site: use cement with a grade not lower than P.O 42.5, and aggregate of clean river sand or quartz sand with a size not exceeding 2.5mm. The cement to sand ratio should be 1:1-2. The butyl rubber latex content in one ton of mortar should be 38-50%. To achieve the corresponding product performance standards and improve construction operability, it is appropriate to add stabilizers, defoamers, pH adjusters, and other auxiliary agents.
④. When using finished mortar, the dosage of chlorinated butyl rubber emulsion is correspondingly reduced, which can be as low as 15-20% of the mortar's weight.
2. Surface Preparation:
The base surface should be flat, rough, and clean, free of oil stains, sanding, hollowing, and cracking. Prior to construction, it should be rinsed with high-pressure water and kept moist, and no standing water is allowed during the construction process.
During steel surface construction, the base surface should be free of oil stains and rust, with a rust removal grade of ST3 preferred. After using chloroprene latex mortar to level the weld joints and lap sections, construction may proceed.
3. Mixing Mortar:
Butyl rubber latex waterproof and anticorrosive mortar should be mixed manually. When mechanical mixing is used, a vertical double-action mixer should be employed. Avoid vigorous stirring during mixing; after thorough mixing, do not remix or add water repeatedly. The prepared mortar should be used within 1 hour.
Step-by-Step Instructions:
Before applying the chlorinated butyl rubber emulsion mortar, it is recommended to first coat the surface with a chlorinated butyl rubber emulsion cement slurry. The slurry should be mixed at a ratio of 100-200 parts cement to 38-50 parts chlorinated butyl rubber emulsion, and an appropriate amount of modifier may be added for better workability. The chlorinated butyl rubber emulsion cement mortar should be applied and spread simultaneously. If the base surface is rough or smooth and meets the workability requirements, the pre-mixed chlorinated butyl rubber emulsion waterproof and anticorrosive mortar can be applied directly.
②. It is not advisable to apply mortar over a large area in one go. The application should be done in strips or blocks, with each block not exceeding 12m² and each strip not wider than 1.5m. The time interval between filling gaps or分段错开 should be at least 24 hours. The wooden strips or polyvinyl chloride strips for the slope joints should be pre-fixed to the base layer. After the mortar coating, the strips can be removed to leave a gap, and the gaps should be filled after 24 hours. When applying in layers, the gap positions should be staggered.
After the chloroprene latex cement mortar has been spread, it should be immediately pressed and smoothed, preferably in a single pass, and it is not advisable to repeatedly press and smooth. When bubbles are encountered, they should be pierced and pressed tightly, ensuring a dense surface.
④. When working on facades or overhead surfaces, if the surface layer thickness exceeds 10mm, it should be applied in layers with a thickness of 5-10mm per layer. Proceed to the next layer only after the previous one has dried completely and is no longer sticky to the touch.
After the application of chlorinated butyl rubber emulsion waterproof mortar, it is advisable to coat a layer of cement mortar on the surface within 12-24 hours.
5. Maintenance:
After applying chloroprene latex cement mortar, the surface should be allowed to dry until it is no longer sticky to the touch. Then, proceed with spraying or covering with plastic film or jute bags for curing. The edges of the plastic film should be sealed tightly, and the ideal curing period is moist curing for 7 days followed by natural curing for 21 days.
6. When used for paving blocks:
①. Blocks should be soaked in water for 2 hours prior to laying, and then dried to remove any watermarks.
When laying acid-resistant bricks, the kneading method should be used; the slurry method can be employed when laying natural stone with a thickness of 60mm or more.
When laying paving blocks, they should be brushed with clean slurry on the subgrade while being laid. The bonding layer and joints of the blocks should be dense and full, and measures should be taken to prevent the blocks from moving. The continuous laying height of vertical blocks should be compatible with the curing time of the adhesive and mortar, and efforts should be made to prevent deformation of the blocks under pressure.
When laying paving blocks, the gaps should be filled and compacted, with the surface of the joints being smooth and even. Any excess mortar on the blocks should be cleaned off.
