Types of water reducing agents

Water reducing agent

One of the concrete admixtures, also known as plasticizer, is to maintain a certain workability condition of concrete mix, can reduce water consumption, improve strength, or in the same water consumption conditions, can improve the workability of the admixtures.

According to its setting time can be divided into ordinary type, early strength type, slow setting type; According to its function, it can be divided into entrained air type and efficient type.

I. Product performance:

1. When the dosage of cementing material is 0.6-1.2%, the water reduction rate can reach 12-20%. Early strength, enhancement effect is obvious, concrete one day, three days strength can be increased by 50-80%, seven days strength increased by 40-60%, 28 days strength increased by 20-40%, long-term strength is still improved.

2, in the same water binder ratio, mixing can make concrete initial slump increase more than 10cm, liquidity greatly increased, and has replasticity.

3. Under the condition of keeping the slump of concrete basically unchanged, adding 2000HC I can save the amount of cement by 10-15%, and the early strength of concrete can still be improved than that without mixing.

4. The concrete mixed with 2000HC I has significantly higher impermeability, frost resistance and durability than the concrete without mixing. Under the condition of reducing the cement dosage by 15%, the frost resistance is still the same as that of the unmixed cement.

5, the product has good adaptability to all kinds of cement.

6, 2000HCF I high efficiency water reducing agent for concrete engineering has a wide range of application, especially recommended to use the following concrete projects: pumped concrete, fluid concrete, self-compacting concrete, hydraulic concrete, steam curing concrete, natural curing precast member concrete, reinforced and prestressed reinforced concrete, high strength concrete.

Two, use method:

1, dosage: 2000HC I powder dosage range is 0.5 ~ 1.2%, preparation of early strength concrete, common dosage is 1.2%.

2. Mixing method: The following mixing method can be selected according to the specific situation when used. No matter what method is selected, it is required to stir evenly.

(1) The powder is mixed with the cementitious material first, and then with the aggregate and water.

(2) the powder is pre-dissolved into a solution of a given concentration, and then added together with the mixing water.

(3) In the stirring process, the water reducer lags behind the stirring water 0.5-1.0 minutes to add.

3, compatibility: This product can also be used with other types of concrete admixtures in line with national standards.

4, overmixing effect: overmixing this product can improve the working degree of concrete, and prolong the setting time, in the case of curing without error, the final strength of concrete will exceed the concrete without admixture.

In order to obtain the best use effect, it is recommended that the user, when using this product for the first time or changing the cement variety, should carry out necessary concrete tests on the dosage of water reducing agent, mixing method and mixing time according to the engineering requirements and specific conditions, and refer to the above instructions, and strictly control the dosage of water reducing agent and mixing water in the construction process.

Iii. Packaging and Storage:

1. The product is packed with inner plastic bags and woven bags, each bag has a net weight of 40kg. The water agent is packed in 200Kg iron drums or in bulk. If special requirements are required, it can be customized in advance. 2, the powder should be stored in the warehouse, pay attention to moisture-proof, but moisture will not affect the use effect, can be matched into water solution before use.

3, valid for three years, after the test of soil test can continue to use.