Concrete Admixtures

Overview of concrete admixtures

Concrete admixtures, also known as concrete additives, is a chemical substance that is added in the process of mixing concrete, accounting for less than 5% of the cement mass, and can significantly improve the performance of concrete. The characteristics of concrete admixtures are many varieties and small dosage, which have a great influence on the performance of concrete, and have the characteristics of less investment, quick effect, and significant technical and economic benefits. With the continuous advancement of science and technology, concrete additives have been used more and more, and admixtures have become the fifth important component of concrete in addition to the four basic components.

Concrete admixture

Specifications of concrete admixtures

Types of concrete admixtures

If concrete admixtures are classified by function, there are five different classes of chemical admixtures: air-entraining admixtures, water-reducing admixtures, retarders, accelerators, and plasticizers (superplasticizers).

Applications of concrete admixtures

Concrete admixtures are added to water-cement mixtures to extend the life of concrete, control setting and hardening, and fix the general properties of concrete. They can be powder or liquid additives. Concrete admixtures can be added at the point of manufacture or on the job site.

Suppliers of concrete admixtures

We are a professional supplier of concrete admixtures and can provide polycarboxylate superplasticizer, concrete accelerator, concrete foaming agent, concrete reinforcement, redispersible polymer powder, HPMC hydroxypropyl methylcellulose, PVA fiber, PP fiber, etc.

Payment Term:
T/T, Credit Card, Western Union, Paypal etc.
Shipment Term:
By courier, by air, by sea, by land, as customers request.
Storage conditions:
1) Store in a dry environment at room temperature.
2) Avoid damp and high temperature.
3) Use immediately after opening the inner packing bag.

5 FAQs of Concrete Admixtures
 

1. What are the main types of concrete admixtures?

   • The main types include water reducers, superplasticizers, air entrainers, accelerators, and retarders. Each type serves a specific purpose, such as improving workability, increasing strength, enhancing durability, or controlling setting times.
      

2. How do water reducers and superplasticizers improve concrete performance?

   • Water reducers and superplasticizers reduce the amount of water needed to achieve a given workability, leading to higher strengths and better durability. Superplasticizers provide more significant reductions in water content compared to standard water reducers.
      

3. Can admixtures be used in all types of concrete?

   • Most admixtures can be used in various types of concrete, but compatibility must be considered. It's important to consult the admixture manufacturer’s guidelines and conduct trial mixes to ensure proper performance.
      

4. What is the effect of air entraining admixtures?

   • Air entraining admixtures introduce microscopic air bubbles into the concrete mix, which enhance freeze-thaw resistance and improve workability. They are particularly useful in areas subjected to harsh weather conditions.
      

5. How should concrete admixtures be stored?

   • Admixtures should be stored in sealed containers in a cool, dry place away from direct sunlight. Proper storage helps maintain their effectiveness and extends their shelf life. Always follow the manufacturer’s storage recommendations to avoid degradation.