Chemical Admixtures - Cement
Superplasticizers, also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete.
Plasticizing Admixtures - Euclid Chemical
Rheology Modifying Admixture for Low-Slump Concrete View Item For over a century, The Euclid Chemical Company has served the global building market as a worldwide quality supplier of specialty products and technical support services for the concrete and masonry construction industry.
Plasticizers for Dry Cast - North America
Plasticizers for dry cast are specially formulated to disperse cement, pozzolans and integral pigments into concrete during production. The benefits for dry cast concrete production include: Increased production rates Increased compressive strengths of concrete Improved color and texture uniformity in the concrete
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.
Admixtures | Super Plasticizers - RussTech
RussTech carries a full line of super plasticizing concrete admixtures including ones that contain the new polycarboxylate technology. These high range water reducers have been specifically designed to increase strength while maintaining extended flowability at lower water to cementitious ratios in the concrete mix. SuperFlo 443. SuperFlo 2000RM.
- What are plasticizer admixtures?
- These admixtures are known as plasticizers. The combination of organic substances or combinations of organic and inorganic substances which cause reduction in water content for a given workability or give a higher workability at the same water content are known or termed as plasticizer admixtures. These are used for the following proposes: 1.
- Why do plasticizers increase the strength of concrete?
- The dispersing ability of plasticizers (water reducing admixtures) results in a greater surface area of cement exposed to hydration. For this reason there is an increase in early strength of concrete than that of admixture free concrete of the same water/cement ratio.
- What are plasticizing cementitious admixtures?
- 3.1. Chemical stability of admixtures in AAC: FTIR analysis Plasticizing cementitious admixtures are designed to improve the properties of Portland cement, which is hydrated with water that has a neutral pH. On the contrary, in AAC, solutions with higher pH are needed to hydrate/activate the cement.
- How much does a plasticizer increase workability?
- At the same water/cement ratio, the increase in workability may range from 30 mm to 150 mm slump depending upon the initial slump of concrete, type of cement, content of cement and dose of the plasticizer. A good plasticizer produces fluidity in concrete or mortar in a different way than that of an air entraining agent.
- What are superplasticizer admixtures?
- The superplasticizer admixtures evaluated are of recent commercial development by the cement industry and comprise admixtures based on melamine (Me), vinyl copolymer (VC), and polycarboxylates (PCE1, PCE2, and PCE3). The three polycarboxylates differ in their structural parameters.
- What is the use of plasticizers in concrete?
- The reduction in water/cement ratio increases the strength and improves durability of the concrete. Sometimes plasticizers are used to reduce the cement content and heat of hydration in mass concrete. Generally following materials are used as plasticizers: 1.
