High Performance Concrete - an overview | ScienceDirect Topics
At the present time, high-performance concrete in developed countries usually refers to concrete with 28-day compressive strength beyond 70–80 MPa, durability factor (defined as the percentage of original modulus retained after 300 freeze/thaw cycles) above 80%, and w/c below 0.35. It is made with good quality aggregates, high cement content
Frontiers | Uncovering the role of superplasticizer
This novel phenomenon (SP enhances the mechanical properties of UHPC) is due to the fact that SP reduced the water film thickness and enhanced the packing structure, therefore resulting in an increased compressive strength. For UHPFRC, similar trends can be witnessed regarding the flowability.
Superplasticizer compatibility with cement properties – A
Superplasticizers (SP) are one of the most important constituents of cement cementitious mix mixes. It makes cementitious mix flowable at a low water-cement ratio without segregation and bleeding as required for high-performance concrete [5].
Superplasticizer
Superplasticizers ( SPs ), also known as high range water reducers, are additives used in making high strength concrete. Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more.
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.
- What is a superplasticizer in concrete?
- Superplasticizers (SPs) are essential components of concrete . They not only can reduce the amount of water required to form concrete, but can also improve the compressive strength .
- What is a superplasticizer used for?
- Superplasticizers (SPs), also known as high range water reducers, are additives used for making high strength concrete or to place self-compacting concrete. Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more.
- What is polycarboxylate superplasticizer (PCE)?
- Polycarboxylate superplasticizer (PCE), the third generation of high-performance superplasticizer, follows the development of ordinary plasticizers and superplasticizers. It significantly reduces water content while enhancing concrete's workability, strength, and durability.
- Why are superplasticizers used in Indian cementitious mix?
- Superplasticizers are increasingly being used in Indian cementitious mix from the 1980 s onwards as they have proved their credibility in parameters like water and cement reduction apart from workability retention, strength gain, and ease to place and pump.
- What are the advantages and disadvantages of superplasticizer?
- Advantages of Superplasticizer: Superplasticizers reduces the water content. It reduces the cement content. Also, increases the workability of concrete. It reduces the permeability of concrete. They are easy to placement. Increased long terms. It develops the early strength.
- Does polycarboxylate superplasticizer improve microstructure of concrete?
- Improvement on microstructure of concrete by polycarboxylate superplasticizer (PCE) and its influence on durability of concrete. Constr. Build.
