First, the product mix of cement, sand and additives made of high quality for cement concrete interface treatment. Second, use: This product is mainly used for bonding concrete wall coverings, and hollowing, cracking, spalling and other quality problems, improve interfacial bonding properties between concrete screed, concrete surface to replace the traditional process of cutting hair, Rough textured grass, greatly increasing the interfacial properties, improve project quality. Third, performance: shear bond strength (Mpa): 7d ≥ 1.0, 14d ≥ 1.5 tensile bond strength (Mpa): untreated 7d ≥ 0.4, 14d ≥ 0.6 ≥ 0.5 soaking heat treatment processing freeze-thaw cycle treatment ≥ ≥ 0.5 0.5 alkali treatment ≥ 0.5 Fourth, the construction process: 1 cleanup grass: Use wire brush to remove the substrate surface, such as floating dust, loose material and oil, cleaned with a soft brush. (2) preparation of mortar interface treatment: Stir the product water. 3 layer construction of water sprayed on the substrate surface with a brush to stir evenly brushing interface mortar on the substrate surface, can also be used for spraying mortar gun, or wipe with a thin iron trowel, then use the roller nap to cover the grassroots prevail. Drying can be coated preliminary step to the next job. Fifth, packaging and storage, transportation: 1. Packing: 40kg ± 1kg / Bag * 25 bags. 2. The product should be stored in a dry, ventilated place, avoid moisture, storage temperature 5 ~ 40 ℃ appropriate. 3. The product shelf life of six months, more than shelf-life re-inspected before use qualified. ; 880 / t VI, the reference amount 1 ~ 3 kg/m2 seven, performance standards: JGJ253-2011 "Technical Specification for Lightweight Aggregate inorganic insulation mortar system."