Type of admixture

Question

Type of admixture

Accepted Answer

Admixtures are materials added to concrete to enhance its properties.

Admixtures can improve workability, durability, strength, and reduce water content.
Types of admixtures include air-entraining agents, water-reducing agents, and accelerating agents.
Air-entraining agents create small air bubbles in the concrete to increase freeze-thaw resistance.
Water-reducing agents reduce the amount of water needed for the same workability.
Accelerating agents speed up the setting and hardening of concrete.
Retarding agents slow down the setting and hardening of concrete.
Superplasticizers increase workability without adding water.
Corrosion inhibitors reduce the corrosion of steel reinforcement in concrete.
Fiber reinforcement admixtures add fibers to the concrete to increase toughness and durability.

Accepted Answer

Admixtures are materials added to concrete to enhance its properties.

Admixtures can improve workability, durability, strength, and reduce water content.

Types of admixtures include air-entraining agents, water-reducing agents, and accelerating agents.

Air-entraining agents create small air bubbles in the concrete to increase freeze-thaw resistance.

Water-reducing agents reduce the amount of water needed for the same workability.

Accelerating agents speed up the setting and hardening of concrete.

Retarding agents slow down the setting and hardening of concrete.

Superplasticizers increase workability without adding water.

Corrosion inhibitors reduce the corrosion of steel reinforcement in concrete.

Fiber reinforcement admixtures add fibers to the concrete to increase toughness and durability.

Accepted Answer

There are five distinct classes of chemical admixtures: air-entraining, water-reducing, retarding, accelerating, and plasticizers (superplasticizers).

Type of admixture

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