Superplasticizer: Types, Advantages & Disadvantages
Types of Superplasticizer: 1.Sulphonated Melamine – Formaldehyde Condensates (SME): Sulfonated melamine formaldehyde condensates are often preferred superplasticizers in the precast industry because they do not dim the cement setting. 2.Sulphonated Naphthalene Formaldehyde Condensates (SNF):
Delay Set Superplasticizer | Fritz-Pak | Concrete Admixtures
Fritz-Pak’s Supercizer 7 is not only a premium superplasticizer, it is a delay set superplasticizer. This powerful product offers the benefits of both a high-range water reducer and a set retarder. It is recommended for use in a variety of formwork, including ICF, to provide the correct flow and strength while also reducing the risk of cold
Superplasticizer
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 - an overview | ScienceDirect Topics
Superplasticizers used in concrete come in four main groups: – Sulfated naphthalene formaldehyde (PNS); – Sulfated melamine formaldehyde (PMS); – Vinyl copolymers (VCPs); – Polycarboxylic ethers (PCEs). 8.2.1 Polynaphthalene sulfonates In 1930, PNS was used for the first time in the manufacture of synthetic rubber and the textile chemicals.
Use of Water Reducers, Retarders, and Superplasticizer
The use of WRA is defined as Type A in ASTM C 494. WRA affects mainly the fresh properties of concrete by reducing the amount of water used by 5% to 12% while maintaining a certain level of consistency, measured by the slump as prescribed in ASTM C 143-90. The use of WRA may accelerate or retard the initial setting time of concrete.
- Which superplasticizer is best for concrete?
- Sulfonated Naphthalene Formaldehyde (SNF) is another widely used superplasticizer, known for its excellent dispersing properties. SNF is particularly effective in reducing the water content in concrete mixes, which enhances the material’s strength and durability.
- Can super plasticizers reduce water content in concrete mix?
- The use of super plasticizers can permit the reduction of water in the concrete mix upto 30% without producing any ill effect on the workability of the concrete i.e. without reduction in the workability of concrete, where as normal plasticizers with doses upto 0.1 to 0.4% by weight of cement can reduce water content from 5 to 15%.
- Do plasticizers reduce concrete strength?
- Nowadays the use of plasticizers or super plasticizers has become a practice to obtain high performance concrete. When the plasticizers or super plasticizers are used in higher dose, the strength development is reduced significantly beyond one day upto 7 days. However seven day strength and beyond, the reduction will not be appreciable.
- 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.
- Is superplasticizer based concrete good for compressive strength test?
- For hardened concrete’s compressive strength test, we compared the properties of superplasticizer-based concrete with those of concrete without superplasticizer. The superplasticizer led to a significant water reduction but maintained workability. Content may be subject to copyright.
- What are the benefits of plasticizers & superplasticizers?
- As the plasticizers and super plasticizers improve workability and compactability, results in the reduction of water/cement ratio, thereby increasing the strength of concrete. It results in the al-round improvement in the properties of the hardened concrete.
