ECC assembled anti-crack and waterproof repair mortar is a new structural material with high ductility, high toughness, high crack resistance and high damage resistance based on cementitious materials, aggregates, additives and synthetic fibers.
GENERAL
ECC assembled anti-crack and waterproof repair mortar is a new structural material with high ductility, high toughness, high crack resistance and high damage resistance based on cementitious materials, aggregates, additives and synthetic fibers.
FEATURE
Scope of application
◆Seismic reinforcement
◆It is mainly used for concrete structures with waterproof and impermeability requirements;
◆Underground works: underground garage, underground shopping mall and underground civil air defense;
◆Rail transit: tunnel, subway and pipe gallery;
◆Municipal Engineering: highway, railway and bridge;
◆Water conservancy and hydropower: water control projects, underwater buildings, water conservancy projects, water diversion / water supply and drainage projects;
PERFORMANCE
Product features
| Testing items | Performance metrics | |
| Water penetration resistance test(stepwise pressure method) | ≥P12 | |
| Flexural strength(N/mm2) | 60d | ≥12.0 |
| Cube compressive strength(N/ mm2) | 60d | ≥50.0 |
| Equivalent bending toughness (kJ/m3) | 60d | ≥40.0 |
| Equivalent bending strength(N /mm2) | 60d | ≥5.5 |
Construction process
1、Base surface treatment: the base course shall be flat and solid, the floating dust, dust and oil stain on the surface shall be removed, the leaking parts shall be treated with plugging materials first, and the periphery of the parts in contact with different materials of metal and plastic pipes shall be polished. When the base course is too dry, it can be watered first, and the next construction can be carried out when there is no water.
2、Preparation of ECC agent:According to the proportion of 100kg dry material and 20kg water, it can be used by hand-held electric mixer or manual mixing. The prepared ECC is better at room temperature and can be used up within 1 hour.
3、Construction of ECC agent:
①Evenly scrape or brush the mixed slurry on the base course with a spatula or hard brush, with a thickness of 3-5mm; Impermeability of underground works: 5-8mm; Mechanical spraying can be used for large-area construction to improve efficiency.
②ECC agent shall be constructed in layers. The thickness of one construction shall not be greater than 10mm. After the initial setting of the front layer, the next layer shall be plastered to the design thickness(initial setting for 4 hours and final setting for 8 hours);
③The construction direction of the front and rear two courses shall be crossed to avoid missing painting.
④24 hours after construction, it is necessary to spray water for curing. The curing time depends on the temperature conditions on site, and it is appropriate to take 3 ~ 5 days at normal temperature.
Packaging and storage
AB two-component barrel, 20kg / barrel for component A and 5kg / barrel for component B. It must be stored in a cool and ventilated room and its shelf life is 12 months.
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