Directory of this article
How many kilograms of antifreeze should be added to a square of concrete?
How much antifreeze should be added to C25 concrete?
How much mortar antifreeze is needed for one cubic meter of concrete?
How much antifreeze can be used for one square meter of cement roof?
How much salt should be added to a square of concrete to prevent freezing?
What is the ratio of antifreeze powder and cement?
How much antifreeze should be added to 10 cubic meters of concrete?
How many kilograms of antifreeze should be added to a square of concrete?
Generally, the amount of antifreeze added is 5% of the concrete volume, which has a greater relationship with the concrete strength and concrete volume. Adding antifreeze to concrete can ensure normal use of concrete at low temperatures. Of course, if water-reducing agent and air-entraining agent are added at the same time, the antifreeze effect will be better.
Generally, the antifreeze and water-reducing agent adulterated in commercial concrete contains a certain early strength component, and the dosage in winter is about 3.0% of the total cementitious materials. -3.5%. For example, if the total C30 rubber material is 380KG, the antifreeze should be mixed at 3.5%, which is 380*3.5%. As for the specific early strength components in the antifreeze, the admixture factory has corresponding proportions based on tests. Adjustment.
Concrete antifreeze is combined with winter temperature conditions and can accelerate the condensation and hardening of concrete under negative temperature conditions. The strength increases significantly and does not affect the later strength development. Chloride-free salt prevents corrosion of steel bars and improves the durability of concrete.
1. Dosage:
Liquid temperature -5 ~ -20℃ accounting for gelling 2.0-5.0% of the material
Powder temperature -5 ~ -20℃ 2.0-5.0% of the cementitious material
2. Function: Mainly used for commercial concrete, suitable for reinforced concrete, prestressed concrete and fly ash-mixed concrete.
How much antifreeze should be added to one side of C25 concrete?
Add 19 kg of antifreeze to one side of C25 concrete. Since the strength levels of concrete are different, the amount of cement is also different. Antifreeze should be added according to the amount of cement, which cannot be more than 5% of the cement amount. Generally, 3% to 4% of the cement amount is added. An admixture that can harden concrete at negative temperatures and achieve expected performance and sufficient anti-freeze strength under specified curing conditions. It is a substance that can prevent moisture in materials from freezing at low temperatures.
How much mortar antifreeze is needed for one cubic meter of concrete?
1. When constructing at 0~-5℃, 4~6% can be added. 2. For construction at -5~-10℃, 5~8% can be added. 3. For construction at -10~-15℃, 8~10% can be added. Early-strength antifreeze uses special antifreeze materials, which can effectively reduce the freezing point of concrete and mortar, and greatly improve the antifreeze performance of concrete and mortar at negative temperatures. And it can increase the early strength of concrete and mortar by 80%...
When taking concrete anti-freezing measures, you can add alkaline water agent or air entrainment This can make the antifreeze effect better and ensure that the concrete can achieve the desired effect.
How much antifreeze can be used for one square meter of cement roof?
Generally, the amount of antifreeze added is 5% of the concrete volume, which has a greater relationship with the concrete strength and concrete volume. Adding antifreeze to concrete can ensure normal use of concrete at low temperatures. Of course, if water-reducing agent and air-entraining agent are added at the same time, the antifreeze effect will be better.
Generally, the antifreeze and water-reducing agent adulterated in commercial concrete contains a certain early strength component, and the dosage in winter is about 3.0% of the total cementitious materials. -3.5%. For example, if the total C30 rubber material is 380KG, the antifreeze should be mixed at 3.5%, which is 380*3.5%. As for the specific early strength components in the antifreeze, the admixture factory has corresponding proportions based on tests. Adjustment.
Concrete antifreeze is combined with winter temperature conditions and can accelerate the condensation and hardening of concrete under negative temperature conditions. The strength increases significantly and does not affect the later strength development. Chloride-free salt prevents corrosion of steel bars and improves the durability of concrete.
How much salt should be added to a square of concrete to prevent freezing?
Answer: The dosage is 5% of the cement weight.
How to use cement and salt:
1. The raw materials of concrete should meet the requirements of "Reinforced Concrete" Engineering Construction and Acceptance Specifications" requirements. Cement: Ordinary Portland cement should be used, or slag Portland cement can be used. The cement delivery period shall not exceed two months. Aggregate: The quality of the sand and stone used should meet the requirements of the national standard for winter construction. The aggregate must not contain frozen matter such as ice and snow. The frozen sand blocks must be broken and screened before use.
2. When mixing concrete, attention should be paid to appropriately reducing the mixing water. 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 leaving the tank should not be lower than 7°C.
3. Add new concreteThe temperature should not be lower than 5℃. Immediately after molding, it should be covered with plastic sheeting and 1 to 2 layers of straw bags to strengthen the heat preservation and moisture retention of the newly poured concrete. The curing time should be no less than 7 days.
4. The dosage is 5% of the cement weight.
What is the ratio of antifreeze powder and cement?
Generally, 3% to 5% of cement is mixed.
One bag is calculated as 100kg, which means adding about 3kg-5kg.
The antifreeze uses special antifreeze materials, which can effectively reduce the freezing point of concrete and mortar, and greatly improve the antifreeze performance of concrete and mortar at negative temperatures.
And it can increase the early strength of concrete and mortar by more than 80% without reducing the later strength, thus ensuring the same development of strength under positive and negative temperature conditions. , the effect is significant. One ton of cement uses 30-50 kilograms of antifreeze.
How much antifreeze should be added to 10 cubic meters of concrete?
The correct proportion of C30 concrete and antifreeze is: 5% when it is below 10 degrees Celsius, and 3% of antifreeze when it is below 5 degrees Celsius. 3%--5% of cement dosage. Antifreeze concrete is a substance that hardens at negative temperatures and achieves expected performance under prescribed curing conditions and prevents moisture in the material from freezing at low temperatures.
Ensure the normal construction of concrete at negative temperatures and reduce the freezing point in the concrete mixture. It can be combined with water-reducing agent, air-entraining agent, etc. to achieve better antifreeze effect. Used for various concrete projects and during construction in cold seasons. Allow the concrete to hydrate normally in a negative temperature environment of 0°C to -15°C; lower the freezing point and improve the early strength of the concrete.
</p
微信扫一扫打赏
