The water reduction, also known as cement water reduction or concrete water reduction agent, is a commonly used building material additive. It mainly achieves the purpose of controlling the liquidity and plasticity of cement slurry or concrete to achieve the purpose of controlling water and ash ratio, improving the working performance of concrete, and reducing water consumption. The following is the role and efficacy of a water reduction agent:
Reduce water consumption: The water reducing agent can reduce the amount of concrete cement in the premise of maintaining concrete strength. By reducing water consumption, the cost of concrete can be reduced and the demand for water resources can be reduced.
Improve the plasticity and liquidity of concrete: The water reduction agent can improve the plasticity and liquidity of the concrete, making it easier to pour, collapse and vibrate. This helps improve construction efficiency and reduce the generation of pores and defects.
Delayed concrete condensation time: Some water reduction agents have the effect of delaying concrete condensation time. This is very useful for the construction situation of large -volume concrete or long operation time, which can reduce the temperature of the concrete increase and the occurrence of thermal cracks.
Improve the crack resistance of concrete: The water reduction agent can improve the crack resistance of concrete, reduce the cracks caused by plastic contraction and dry shrinkage. This helps improve the durability and life of concrete.
Improving the strength and durability of concrete: The appropriate amount of water reducing agent can improve the strength, denseness and durability of the concrete. It can promote the tight arrangement of cement particles and aggregate particles, and improve the mechanical performance and anti -penetration performance of concrete.
It should be noted that different types of water reducing agents have different characteristics and scope of applicability. When using a water reduction agent, the appropriate type of water reduction agent should be selected according to the requirements of specific materials and engineering requirements. In addition, the use of water reducing agents should meet relevant standards and specifications, and conduct necessary tests and verifications.