ECC high ductility crack resistant waterproof coating 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 high ductility crack resistant waterproof coating 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
◆Anti seepage of reservoir dam and port.
◆Concrete repair of pavement, bridge deck, tunnel and culvert.
◆Concrete reinforcement of building structure, waterproof and plugging of civil air defense facilities.
◆Anti leakage treatment for roofs, toilets and basements of industrial and civil buildings.
◆It can be constructed directly on the wet base surface and has good adhesion with a variety of base materials.
◆Anti chemical corrosion buildings such as hot water pool, landfill, chemical warehouse and chemical tank.
PERFORMANCE
Performance
JC/T2461-2018 test method for mechanical properties of high ductility fiber reinforced cement matrix composites
| Testing item | Performance metrics | |
| Water penetration resistance test (step-by-step pressurization 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.ECC preparation
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 recommended to be used up within 1 hour at room temperature.
3.ECC Construction:
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: mechanical spraying can be used for the construction of 5-8mm large area to improve the construction efficiency.
②ECC shall be constructed in layers, and the thickness of one construction shall not be greater than 10mm. After the initial setting of the front layer, the layer shall be plastered until 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, storage and transportation
Packed in PP bag, 25kg / bag. Stored in a ventilated and dry place and it’s shelf life is 3 months.
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