Superplasticizer - an overview | ScienceDirect Topics
Superplasticizers are additions that allow a given degree of workability to be obtained at a reduced water/cement ratio. The ratio may be reduced by up to 20% in the presence of, for example, sulphonated naphthalene formaldehyde condensate, which is absorbed at the solid/liquid interface.
Superplasticizers in practice - ScienceDirect
Superplasticizers are essential components of modern concrete, allowing the production of highly durable structures with reduced environmental impact. Their working mechanisms rely on their molecular structures and physical–chemical interactions taking place between them and the surface of cement particles.
Superplasticizers in practice | Request PDF - ResearchGate
Superplasticizers (SPs) are used to reduce the amount of water required to obtain the desired flow properties of concrete mixtures or maintain the flow properties while reducing the cement...
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.
Polycarboxylate Superplasticizer Powder & Liquid for Concrete
PCE based superplasticizer (High Water Reduction) is the light yellow liquid, it can greatly reduce the water consumption of cement, increase the fluidity of concrete, and improve the crack resistance of cured cement. It can be widely used in non-shrinkage grouting, repair mortar, etc.
- What are superplasticizers used for?
- Superplasticizers are known to reduce the requirement of water by 30% or more. They enable the manufacturing of emerging concrete technology like self-consolidating concrete and high-performance concrete [169,275]. Cement particles are separated from each other due to the repulsion of negatively charged superplasticizers.
- Are superplasticizers essential components of modern concrete?
- Conclusions Superplasticizers are essential components of modern concrete, allowing the production of highly durable structures with reduced environmental impact. Their working mechanisms rely on their molecular structures and physical–chemical interactions taking place between them and the surface of cement particles.
- What is the difference between a plasticizer and a superplasticizer?
- 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. These additives are employed at the level of a few weight percent. Plasticizers and superplasticizers also retard the setting and hardening of concrete.
- Can a superplasticizer be used to reduce water content?
- The use of superplasticizers allows this water reduction without affecting workability. Water reduction of up to 30% can be achieved and concrete with a w/c ratio below 0.28 has been placed successfully. Superplasticizers can be used to produce concrete with reduced cement content without changing the w/c ratio.
- Are superplasticizers better than plain concrete?
- Thus, superplasticizers cause no inconveniences even when concretes are autoclaved and, at the same workability, they give higher strength than plain concrete. The considerable reduction allowed by the naphthalene sulphonates and a timely choice of steam curing and autoclaving cycles enable very high-strength concrete to be obtained.
- What is a superplasticizer admixture?
- Superplasticizers are a relatively new category of admixtures utilized for gaining higher strength at lower water/cement ratios. Mostly, these are chemical admixtures and interact with cement. Superplasticizers are chemically different from normal water reducers and are capable of reducing water content up to about 30%.
