GRT-TL82 special repair material for road and bridge
The special repair material for roads and bridges is a kind of high degree and fast drying ground repair product with high cost performance ratio. This product not only has the bonding property of polymer materials, but also has the durability of inorganic materials for new concrete repair mortar ； High compressive strength, fast curing, good bonding performance; It has good water retention performance, crack resistance, high alkali resistance and ultraviolet resistance; It is easy to operate, can be used for wet base construction, and is healthy and environmentally friendly. The construction steps become simple and convenient, the durability is synchronized with the concrete, the construction period is shortened, and the economy can be ensured.
GRTTL Technical indexes of series of repair materials | |
project | GRT-TL82 |
Patching material |
Mobility （mm） | Initial value | ≥300 |
30min retention value | ≥220 |
24h vertical expansion rate (%) | 0.02—1.5 | |
Compressive strength （Mpa） | 4h | ≥20 |
3d | ≥35 |
28d | ≥60 |
bond Strength (28d) | ≥1.5 | Neutralization resistance (mm) 28d | >5 | |
Whether there is corrosion to reinforcement | nothing | |
Bleeding rate (%) | zero | |
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Product features
1. Early strength: the compressive strength can reach more than 20Mpa for 6-7 hours under 25 ℃ normal temperature, which is suitable for sites requiring short-term traffic opening.
2. Convenient construction: It has good construction and easy performance. No vibration is required during construction, and it can be used by adding water and mixing on site.
3. Good bonding performance: the bonding strength with the new and old concrete is greater than 1.8Mpa, which can largely ensure the tight bonding between the repair base.
4. It has good compatibility with the original road surface, and it will not fall off or crack after repair, with good durability.
5. The frost resistance is higher than the original pavement, and the frost resistance cycle is more than 25 times
6. The height of shrinkage ratio of the patching material is consistent with that of the original layer.
Product use
1. Special repair materials for roads and bridges are applicable to concrete roads or Floor surface cement Shallow adhesive repair, multilateral corner concrete slab repair, span expansion joint Repair and pavement subsidence repair.
2. It is suitable for repairing expressway, airport pavement, rural pavement, factory floor, school playground, urban highway, community pavement, bridge and cement pavement.
Construction taboo
1. The construction temperature of the repair material is above 5 ℃, and it is not suitable to construct in rainy days or freezing days.
2. The patching material shall be mixed and used at the same time. If it is not used up at one time, the bag mouth shall be immediately tied, and then opened when necessary.
3. No secondary surface finishing is allowed after the initial setting of the repair material pavement.
4. The repair layer of the initially set repair material will lose water, so try to avoid water spraying and forced surface finishing. Practical performance
There is no need for complex construction machinery and technical requirements during construction, no need for long-term closed traffic, and traffic can be opened 2 hours after construction; There is no need to excavate the diseased parts, which can save a lot of construction costs, material costs and maintenance time, effectively delay the spread and spread of road diseases, and extend the service life of the road; Moreover, the color of the repaired cement concrete pavement is close to that of the original cement concrete pavement, with good aesthetics.
