Five Must-Have Concrete Additives

Additives, also called admixtures, are added to concrete before or during concrete mixing. Concrete additives can improve concrete quality and properties, and make it easy to handle. Using concrete additives can improve its performance and either speed up or slow down its curing process.


Concrete additives will help your concrete pouring process, and reduce cost while increasing work efficiency. The final results, of course, depend on the quality, dosage, and types of additives being used.


At WOTAIchem, we provide the following construction chemicals.




Adding additives or admixtures to concrete or mortar mixes


When mixing up a batch of mortar, concrete, plaster, or any similar mixture, you are likely familiar with the dosage of each component. Each ingredient must be consistent every time you mix. This effectively ensures consistent results across the entire project.


The principle remains consistent when adding any additives to concrete or mortar mixes. The additives should be consistently added to every mix.


When adding dyes or pigments to a mix, precision is crucial. Even a slight variation in the amount of dye or coloring added can result in a noticeable difference.


It’s advisable to keep a record of the quantities or dosages of each material and ensure adherence to them before mixing. This chart will help you keep track of the exact amounts used and ensure that every mix is consistent with the last one.




List of Construction Chemicals


1. Cellulose ether

2. Redispersible polymer powder

3. Super plasticizer

4. Antifoaming agent

5. Fiber reinforcement

6. Calcium formate


1. Cellulose Ether: Impressive Water-retention and Workability


Cellulose ether is typically added to dry pack mortar, which is a mixture of all dry ingredients such as sand, cement, and sometimes other additives. Before using dry pack mortar, water is added to the mixture to activate the cellulose ether and create a workable consistency. This ensures that the mortar can be easily applied and shaped to fill gaps, and cracks, or to set tiles, stones, or bricks securely in place.


Cellulose ether serves as a thickener and water-retaining agent, providing good workability. It improves mortar texture, enhances adhesion, and reduces water segregation. Cellulose ether is commonly used to increase the strength and durability of your cement mixture.


Related applications: HPMC for tile adhesive, HPMC for wall putty, HPMC for self leveling, MHEC for putty, MHEC for tile adhesive, MHEC for paints, MHEC for dry mix mortar, HEC for paints, HEC for daily chemical, HEC for oil production.




2. Superplasticizers: Boosting Fluidity and Strength


Superplasticizers also referred to as high-range water reducers. They play a crucial role as additives in the formulation of mortar or concrete mixes. These additives are indispensable for creating highly fluid mixes while maintaining optimal strength.


Superplasticizers enhance workability and reduce water usage by dispersing cement particles effectively. This results in a more fluid concrete that is easier to pour and shape, without compromising its strength. Superplasticizers also contribute to the density of mortar or concrete. Lead to increased durability and resistance to segregation.


WOTAIchem provides two types of superplasticizers:


-Polycarboxylate-based super plasticizer, short in PCE.

-Melamine superplasticizer, short in SM.


Related applications: PCE for self leveling, PCE for dry mix mortar, PCE for concrete.




3. Calcium Formate Accelerators and Frost Proofing Additives


Generally, when a concrete mix cures naturally, it’s flexible and resistant to cracking. However, there are times when making a concrete mix cure faster can be helpful, especially in winter.


When concrete is exposed to cold and frost during curing, the strength is compromised. It’s best to ensure the concrete cures quickly and reaches high strength ASAP to reduce damage from the cold.


Accelerating additives are used to shorten the time needed for a concrete mix to cure. Calcium formate is the must-have additive to help you achieve that.
Calcium formate is an important component of concrete curing, especially in cold weather. It accelerates the hydration rate of cement. And improving early strength and speeding up construction progress.


At WOTAIchem, calcium formate is a flexible additive that can be used for mortar and concrete.




4. Retarders: Controlling Setting Time


On the other hand, retarders help to slow down the setting process of mortar or concrete. They provide flexibility when working with concrete, allowing for easier handling and placement. By delaying the chemical reaction that causes concrete to harden, retarders prevent it from setting too fast. If the concrete sets too quickly, it can become very difficult to work with and may result in uneven surfaces. Retarders give contractors more time to transfer, pour, or place.




5. Fiber Reinforcements: Enhancing Structural Integrity


WOTAIchem provides synthetic fibers for your concrete mix. Synthetic fibers are sometimes also called plastic fibers. It it made to improve crack resistance and toughness of concrete. It not only reduces shrinkage but also enhances impact resistance. Fiber reinforcement offers multiple benefits for concrete application.


WOTAIchem Synthetic Fibers:

-Polypropylene Fibers
-Polyvinyl alcohol fiber
-Polyester fiber
-Polyacrylonitrile fiber




How many additives Should you add to a Mortar Mix?


Ultimately, how much you add to the concrete mix will sorely depend on which type of additive you are using, and the final result you wish you achieve.
If the mixture involves pigment or dyes, then it’s better to use a table of dosages to keep track of all ingredients. Make sure the results are consistently the same. For additives or admixtures, it’s better to follow dosage recommendations provided by manufacturers. The dosage varies based on your actual applications.



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