SikaPlast-950 | PCE based Super-plasticizers
SikaPlast-950 MID-RANGE WATER REDUCING AND RETARDING CONCRETE ADMIXTURE SikaPlast-950 is a polycarboxylate based superplasticizer developed particularly for use in ready mixed concrete to give extended slump retention and high strength development of normal grade concrete mixes.
Retarding Admixture - an overview | ScienceDirect Topics
Retarding admixtures delay the end of the dormant period and the start of setting and hardening. This is useful when used with plasticizers to give workability retention. Used on their own, retarders allow later vibration of the concrete to prevent the formation of cold joints between layers of concrete placed with a significant delay between them.
Sika ViscoCrete-1050 SA | PCE based Super-plasticizers
Sika ViscoCrete-1050 SA High Range Water-Reducing and retarding Admixture for concrete Sika ViscoCrete-1050 SA is a polycarboxylate based superplasticizer developed particularly for use in ready mixed concrete to give extended slump retention and high strength development of high specification grade concrete mixes.
Selection of Superplasticizers for High-Performance Concrete
The use of superplasticizer and the retarding agent is a tricky method. The climatic factors also must be considered while optimizing their amount, because the cement reactivity is greatly affected by the temperature of the concrete.
15 Types of Admixtures Used in Concrete - The Constructor
Commonly used retarding admixture is calcium sulphate or gypsum. Starch, cellulose products, common sugar, salts of acids are some other retarders. Most of water reducing admixtures are also acts as retarding admixtures and they are called as retarding plasticizers. Fig 2: Retarding Admixture (Gypsum) 3. Accelerating Admixtures
