High toughness epoxy repair concrete

I Component

High toughness epoxy repair concrete is prepared from component a elastic epoxy resin, component B elastic epoxy curing agent and component C special aggregate. It is divided into high toughness epoxy concrete and high toughness epoxy mortar according to different proportions of material C.

General Feature Performance

GENERAL

I Component

FEATURE

II Characteristic

◆The curing speed is fast. It can be cured in two hours and the traffic can be opened in two to three hours;

◆Excellent bonding performance, able to bond steel, concrete, wood, glass and other materials;

◆Good mechanical properties, compression resistance, bonding and other physical and mechanical properties are much better than ordinary cement-based grouting materials;

◆Easy to operate, just mix evenly according to the reference proportion;

◆It has good resistance to aging and medium, and can withstand long-term corrosion of chemicals such as acids, alkalis, salts and oils.

III Aplication

It is used for the repair of expansion joint protection belt of Expressway and bridge, the rapid repair of tram track periphery and railway turnout, the maintenance of airport runway, and the rapid repair of pits and defects on cement or asphalt concrete pavement.

PERFORMANCE

IV Basic parameters

Table 1 Properties of cured elastic concrete adhesive (a + b)

Testing items	Testing methods	Technical index
Testing period (min, 25 ℃)	GB/T7123 1-2002	15-45
Tensile strength (MPA)	GB/T2567-2008	≥ 4
Elongation at break (%)	GB/T2567-2008	≥ 30
The normal tensile bond strength (MPa) of steel to (C45) concrete	GB 50728-2011	≥ 2.5, and it is cohesive failure of concrete

Table 1 performance test items of cured elastic concrete adhesive (a + b)

Testing items	Test conditions	technical requirement
Compressive strength (MPa)	23±2℃,7d	≥40
Modulus of elasticity (GPa)	23±2℃,7d	≤10
Flexural strength (MPa)	23±2℃, 7d	≥10
Bonding strength with ordinary concrete (MPa)	23±2℃, 7d	≥ 1.5, or cohesive failure of concrete
Bonding strength with asphalt concrete (MPa)	23±2℃,7d	≥ 0.6, or cohesive failure of concrete
Bonding strength with steel (MPa)	23±2℃,7d	≥1.5

Ⅴ Technological process

Damage investigation→Identify repair areas→Chisel and clean the damaged parts→Clean the surface to be bonded→Brush AB→Tamping and leveling→Maintain and open traffic→Mixed aggregate→Preparation of AB glue

Ⅵ Key points of construction

1. Chisel and clean the damaged parts

Cut the area to be repaired into regular shape, Chisel out the old concrete, ensure that the damaged concrete is completely removed, and the repair depth is not less than 20mm, and clean the repair area with air compressor or other methods.

2. Clean the surface to be bonded

If there is rusted reinforcement in the repair area, derusting treatment shall be carried out to ensure that the repair area is dry and free of oil stain;

3. Prepare AB glue solution

Prepare clean mixing containers and mixing tools, accurately weigh a certain amount of components a and B according to the instructions, and mix them evenly in the container;

4. Apply AB glue

In order to obtain the best bonding performance, it is necessary to evenly brush a layer of AB glue on the surface of bonding substrate;

5. Incorporation

Pour the prepared AB glue solution into the mixing equipment, add component C in proportion, and fully mix;

6. Tamping and leveling

Pour the mixed elastic concrete into the repair place, tamp and level the elastic concrete, and roughen or emboss it before curing;

7. Maintain and open traffic

At 25 ℃, the drying curing time is 2-3 hours. The curing time can be shortened or extended according to the actual temperature on site. If the traffic needs to be opened faster, the aggregate can be pre heated, and the heating temperature is not easy to exceed 80 ℃.

High toughness epoxy repair adhesive

VII Matters needing attention

1. Before construction, it is necessary to estimate the amount of materials to avoid waste caused by excessive batching;

2. The prepared AB glue solution shall be used immediately and shall not be placed for a long time;

Packaging and storage: packaging and storage in accordance with national regulations. The storage environment should be dry, cool and well ventilated, avoid high temperature and keep away from fire source. The packaging container must be kept closed.

Effective storage period: 6 months.

Package specification: 40kg / component

Health and safety: This product is actually non-toxic, but it does not rule out allergic reactions caused by exposure to this product. Avoid direct skin contact when using. If the skin is accidentally contaminated, wash it immediately with suitable detergent, soap and water. Flush eyes with water and seek medical treatment immediately

Statement:

The information provided in this product manual is entirely based on our understanding in the laboratory and practice. However, since the use of products is usually beyond our control, we only guarantee the quality of the products themselves. We reserve the right to modify the specification without prior notice.