How much antifreeze can be added to a pack of cement

In general, 3% to 5% of cement is blended.

A bag is calculated according to 100kg, which is about 3kg-5kg.

The antifreeze is made of special antifreeze materials, which can effectively reduce the freezing point of concrete and mortar, and greatly improve the frost resistance of concrete and mortar at negative temperature.

And it can increase the early strength of concrete and mortar by more than 80%, and the later strength will not be reduced, so as to ensure that the strength can be developed under the conditions of positive and negative temperature and negative temperature, and the effect is remarkable.

0 -5 case construction, can be mixed with 4 6%.

5 -10 case of construction, can be mixed with 5 8%.

How to use: 1. Concrete raw materials should meet the requirements of the "Code for Construction and Acceptance of Reinforced Concrete Engineering".

Cement: It is advisable to use ordinary Portland cement.

Slag Portland cement can also be used, and the cement delivery period shall not exceed two months.

Aggregates: The quality of sand and stone used should meet the requirements of the national standard for winter construction, and the aggregates shall not contain frozen objects such as ice and snow, and the frozen sand blocks must be broken and used after screening.

2. When mixing concrete, it is necessary to pay attention to appropriately reducing the mixing water, and the water reduction rate can be controlled at about 10%, and the slump.

It should be controlled within 30mm. When using, it must be supplemented with certain insulation measures, and the temperature of the concrete out of the tank is not less than 7.

3. Freshly poured concrete.

The temperature of the mold is not less than 5, and it is covered with plastic cloth and 1 2 layers of straw bags immediately after molding, and the newly poured concrete is strengthened for thermal insulation and moisturizing, and the curing time is not less than 7 days.

4. The dosage is 5% of the weight of cement.

It depends on what the minimum temperature is, know the ambient temperature, how much to use in accordance with the instructions of the antifreeze, you can, there are instructions on the package, the antifreeze can also be added according to the amount of cement, generally 3% 4% of the dosage is added, not greater than 5% (otherwise it will affect the strength of the concrete).

It works, and the use of antifreeze admixtures is an effective measure to improve the frost resistance of commercial cement. The role of cement antifreeze in the potato is as follows:

The critical strength of early freezing of commercial cement is reduced. In general, the critical strength can be reduced (20% 30%) R28 after being mixed with admixtures, which greatly shortens the curing time of commercial cement, reduces the cost of maintenance, and shortens the construction period of Chanshan.

Promote the crystallization distortion of solid water-ice in freshly mixed commercial cement. With the process of freezing, due to the reduction of the liquid phase, the concentration of the admixture continues to increase, and at the same time, a part of the water is used for the hydration of cement and is combined with hydrate.

, also increases the concentration and decreases the freezing point.

When the concentration of the admixture solution is close to equilibrium in the liquid phase of commercial cement, the amount of water required for cement is obtained by melting ice. As a result, the ice content in commercial cement gradually decreases until it disappears.

Generally, there are certain early strength components in the adulterated antifreeze superplasticizer of commercial concrete, and the amount of winter is about the sum of the cementitious material, such as the total rubber material of C30 is 380kg, the antifreeze is doped, that is, 380*, and how many early strength components are in the specific antifreeze, and the admixture factory has the corresponding ratio adjustment according to the test.

Concrete antifreeze is combined with the winter application temperature conditions, which can accelerate the coagulation and hardening of concrete under negative temperature conditions, the strength growth is obvious and does not affect the development of later strength, no chloride salt avoids steel corrosion, and improves the durability of concrete.

1. Dosage: liquid temperature -5 20 accounts for the powder of the cementitious material and temperature -5 20 accounts for the cementitious material.

2. Function: Mainly used for commercial concrete, suitable for reinforced concrete, prestressed concrete and fly ash concrete.

4 catties, the antifreeze component can change the concentration of the liquid phase of the concrete, reduce the freezing point, ensure the existence of the liquid phase of the concrete at negative temperature, so that the cement can still continue to hydrate. The early strength component can improve the early strength of concrete and enhance the damage resistance of concrete to freezing. Rust inhibitors such as nitrite can prevent the rust of chloride salt on steel bars to a certain extent, and have both antifreeze and early strength.

When mixing concrete, attention should be paid to appropriately reducing the amount of water mixed, the water reduction rate can be controlled at about 10, and the slump should be controlled within 30mm. Certain insulation measures must be taken during use, and the temperature of the concrete tank shall not be less than 7. The temperature of the newly poured concrete into the mold shall not be less than 5, and shall be covered with plastic cloth and straw 1 2 bags immediately after the molding to strengthen the insulation, the moisture of the newly poured concrete, the curing time shall not be less than 7 days.

It depends on what the minimum temperature is, know the ambient temperature, how much to use in accordance with the instructions of the antifreeze, you can, there are instructions on the packaging, and I really help you look forward to adopting

Antifreeze is added according to the amount of cement, generally 3% 4% of the dosage, not greater than 5% (otherwise it will affect the strength of concrete).

Cement antifreeze is combined with the winter application temperature conditions, can accelerate the coagulation and hardening of cement under negative temperature conditions, the strength growth is obvious and does not affect the development of later strength, no chloride salt to avoid steel corrosion, improve the durability of cement.

When used, it can be adapted to the winter construction requirements of -5 -20 by adjusting the dosage, antifreeze can be divided into strong electrolyte inorganic salts (chloride salts, chloride salt rust inhibitors, chloride-free salts), water-soluble organic compounds, organic compounds and inorganic salts according to its composition.

Dear, I'm glad to answer for you: a cubic of concrete plus antifreeze is like this: antifreeze for one side of concrete plus 10 15 yuan.

Add 2% to 5% of cementitious materials, and the specific Xunsun sells according to the different concrete strength grades, different construction environment temperatures, and the proportion of antifreeze that needs to be added is also different, subject to the actual situation. Because the concrete contains a certain proportion of water, if it is in the sub-zero cold empty mu amusement, it will produce a freezing reaction and affect the solidification of the concrete, so it is necessary to add antifreeze to improve the strength of the initial stage of concrete solidification, but because the concrete has high requirements for the mix ratio, the proportion of antifreeze can not exceed 5%, so as not to affect the strength.

0 degrees do not need to put antifreeze, the general construction does not let you put these things, affecting the quality of solidification!