JH-3 type anti-crack and anti-seepage enhancer

1. Product introduction

JH-3 type anti-crack and anti-seepage concrete high-efficiency reinforcing agent, which brings together the essence of concrete anti-crack and anti-seepage materials from some foreign countries, not only has high-efficiency anti-crack and anti-seepage properties It has good water-reducing and enhancing effect, moderate setting time, good plasticity retention, good construction workability, frost resistance and corrosion resistance. It is a first-generation multi-functional anti-crack and anti-seepage material in China.

II. Product technical parameters:

●Powdered solid;                                                            8%; ● Water content: ≤3.0%;

● Concrete time: Chu Cingi ≥+120min, Final Concaber ≤+210min; ● MGO content: ≤5.0%;

● Total content of K and Na: ≤1.0%; Shelf life: one year.

3. Main performance indicators and characteristics

1. Good constructability. JH-3 type reinforcement has a very good slump-preserving effect on fresh concrete. There is basically no slump loss within two hours after the concrete is mixed, and it is almost unaffected by temperature changes. Its slump-preserving effect is significantly higher than that of other products. , especially suitable for concrete projects with high requirements for crack resistance and waterproofing.

2. The water reduction and enhancement effect is good. The water reduction rate of JH-3 type enhancer is about 8-15%, and the enhancement effect is significant. Compared with ordinary concrete, the 3d compressive strength of concrete mixed with JH-3 type reinforcement can be increased by 70-120%, the 7d compressive strength can be increased by 55-100%, the 28h compressive strength can be increased by 30-65%, and the 90h compressive strength can be increased by 30-65%. The compressive strength can be increased by 25-40%, with a large enhancement and stable strength performance in the later period. Under the premise of ensuring the same strength, in addition to incorporating part of the substituted cement, about 10% of the cement consumption can be saved.

3. Concrete has small volume deformation. Concrete mixed with 6-8% JH-3 type reinforcing agent has micro-expansion characteristics in the early stage, and the concrete basically has no shrinkage after 28 days.

4. Strong crack resistance. On the one hand, the large water-reducing property of JH-3 type reinforcing agent reduces the W/C of fluidity concrete to about 0.30, thereby effectively reducing shrinkage; on the other hand, On the other hand, the JH-3 type reinforcing agent causes the concrete to produce a large amount of ettringite in the early stage, causing the concrete to expand slightly, thereby compensating for the shrinkage of the concrete. Experiments have shown that concrete mixed with JH-3 type reinforcement has basically no shrinkage in 28 days, and the shrinkage rate in 42 days is only 1.2×10-4, which is far less than the deformation value that will cause concrete cracking.

5. The anti-seepage effect is good, and the anti-seepage capacity is greater than S30.

6. The heat of hydration is low. The 1d heat of hydration of the cement base material mixed with JH-3 type reinforcing agent is only about 1/7 of that of pure cement slurry.

7. The bonding force between steel bars and concrete is strong. Adding 8% JH-3 type reinforcing agent increases the holding strength by 70-90% compared with ordinary concrete.

8. It has a certain anti-freeze ability and the characteristics of high early strength make concrete have a certain anti-freeze ability. When the temperature is above -5°C, this anti-crack and anti-seepage agent can be used without the need to use other antifreeze agents.

9. High durability. It has good frost resistance, and the strength loss rate after 50 freeze-thaw cycles is only 50-60% of ordinary concrete. Compared with ordinary concrete, the carbonation resistance of concrete mixed with JH-3 type reinforcing agent is increased by 2-4 times over the same period. In addition, the JH-3 type will not produce alkali aggregate reaction in concrete and has strong chemical corrosion resistance.

IV. Scope of use:

JH-3 type reinforcing agent can be mixed with ordinary Portland cement, slag Portland cement, fly ash cement, volcanic ash cement, etc., for Cement using anhydrite as a setting regulator has strong adaptability and is suitable for various plain concrete, reinforced concrete, prestressed concrete projects, repair projects and filling and pouring projects. It is especially suitable for structures with crack resistance and anti-seepage requirements, and can be used as structural self-waterproof concrete. Such as dams, anti-seepage walls, reservoirs, tunnels, storage tanks, etc.

5. Packaging and storage:

1. This product is packed in woven bags lined with plastic bags, each bag weighs 50kg.

2. This agent is in powder form. Be careful to prevent damage during transportation. Pay attention to moisture-proof when storing.

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