Product Introduction AL-2 Culvert Trenchless Special Aluminate Inorganic Anti-Corrosion Mortar is a mixture of polymer emulsion, special cementitious materials, and aggregates through a unique process. This mortar exhibits excellent properties such as adhesion, crack resistance, freeze resistance, impermeability, corrosion resistance, chloride ion penetration resistance, wear resistance, and aging resistance. It is suitable for anti-seepage, anti-corrosion surface protection, and repair projects in hydraulic, port engineering, highways, bridges, metallurgy, chemical industry, industrial and civil building steel structures, and reinforced concrete structures.

II. Product Applications

1. Repair and reinforcement of drainage pipelines and various box culverts and tunnels;

2. Concrete reinforcement of building structures, waterproofing and leakage sealing of civil air defense facilities;

3. Anti-seepage treatment for reservoirs, dams, and ports;

4. Anti-chemical corrosion structures such as hot water pools, landfills, chemical warehouses, and chemical tanks;

5. Anti-leakage treatment for roofs, bathrooms, and basements in industrial and civil buildings;

6. Waterproofing for steel structures and reinforced concrete;

7. Can be applied directly on damp substrates, with strong adhesion to various base materials.

III. Product Features

1. Acid and alkali resistance, anti-corrosion;

2. High waterproof grade, impermeability pressure can reach over 1.8 MPa;

3. High strength, conventional strength is above 50 MPa;

4. Easy construction, can be sprayed or applied.

IV. Performance Parameters

GB/T50212-2014 "Code for Construction of Building Anti-Corrosion Engineering"

DG/TJ08-2354-2021 "Technical Standard for Trenchless Rehabilitation of Urban Drainage Pipelines"

T/CECS717-2020 "Construction and Acceptance Specification for Trenchless Rehabilitation of Urban Drainage Pipelines"

V. Construction Process

1. Substrate Requirements and Treatment: The substrate surface should be flat, rough, clean, free of oil stains, and dust; before construction, rinse with high-pressure water and keep damp, but without standing water. Apply YJ-302 interface treatment agent in advance for bonding.

2. Material Preparation: Pour 90% of the actual water into the powder and mix evenly, then gradually add the remaining 10% water and stir until no lumps. The prepared slurry should be used within 0.5 to 1 hour.

3. Construction: Apply a uniform coat of YJ-302 interface agent (Part A: Part B = 3:1) on the damp concrete substrate. Avoid large construction areas at once; work in strips and blocks with staggered intervals of at least 24 hours. For layered construction, stagger the joint positions.

4. After applying the aluminate inorganic anti-corrosion mortar, immediately press and level it in one pass, avoiding repeated troweling (prick and press any bubbles, compact the surface). For vertical or overhead surfaces with a thickness over 10mm, apply in layers, each 5-10mm thick, and proceed to the next layer only when the previous one is touch-dry.

5. Curing: After construction, when the surface is touch-dry, perform spray curing or cover with straw mats, gunny sacks, etc., to maintain moisture. Curing temperature should not be below 5°C. After 24 hours, cover with plastic sheeting for moist curing for 7 days, and sprinkle water on the surface periodically if possible.