Chemical Admixtures - Cement
Chemical Admixtures. Chemical admixtures are the ingredients in concrete other than portland cement, water, and aggregate that are added to the mix immediately before or during mixing. Producers use admixtures primarily to reduce the cost of concrete construction; to modify the properties of hardened concrete; to ensure the quality of concrete
High Range Water Reducer - Sika
The combined water reducing and superplasticizing action provide the following benefits: Higher early and ultimate strengths for cost effective high strength concrete and earlier structural use of concrete. Higher early strengths allow faster demolding and more efficient use of forms to precast producers.
Superplasticizer: Types, Advantages & Disadvantages
Superplasticizers (SPs) are also known as high- range water reducers that are additive used in making high strength concrete. Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow a 30% or more reduction in water content.
Superplasticizer - an overview | ScienceDirect Topics
Bing-Lin Lai, in Design of Steel-Concrete Composite Structures Using High-strength Materials, 2025. 7.2.7 Quality control. When superplasticizer is used, concrete tends to lose workability rapidly. High strength concrete containing such materials must therefore be transported, placed, and finished before they lose their workability.
Use of Water Reducers, Retarders, and Superplasticizer
There are four types of superplasticizers: sulfonated melamine, sulfonated naphthalene, modified lignosulfonates and a combination of high dosages of water reducing and accelerating admixtures. Commonly used are melamine based and naphthalene based superplasticizers.
- What is a superplasticizer?
- Our premium superplasticizers are designed to significantly improve the workability and durability of your concrete mixes. By reducing water content without compromising strength, these additives ensure optimal flowability and ease of placement, making them ideal for high-performance concrete applications.
- What is PCE superplasticizer?
- PCE superplasticizer is a high-performance water reducing agent that integrates many functions such as high water reduction, high collapse retention, reinforcement, shrinkage, and environmental protection. It is also an ideal admixture for preparing high-strength and high-performance concrete.
- What is a superplasticizer in concrete?
- Superplasticizers allow a 30% or more reduction in water content. It is chemical admixtures that are added to the concrete to improve its flowing ability, they help to reduce the amount of water in the concrete and to improve the strength and durability of concrete. They achieve a reduction in water content without loss of workability.
- What is polycarboxylate superplasticizer?
- Polycarboxylate superplasticizer (PCE), the third generation of high-performance water reducer (water reducing admixture), follows the development of ordinary plasticizers and superplasticizers. It significantly reduces water content while enhancing concrete's workability, strength, and durability.
- What is a high range water reducing admixture?
- Our high range water reducing admixtures provide exceptional performance by significantly lowering water content and increasing concrete flowability. Ideal for demanding applications requiring high strength and durability, these advanced additives ensure optimal results in every mix.
- Can polycarboxylate based superplasticizer improve the crack resistance of concrete?
- The polycarboxylate based superplasticizer can improve the crack resistance of concrete. After adding an appropriate amount of water reducing agent in concrete, the internal structure of the concrete can be improved and the contraction and cracking of concrete can be reduced.
