Chemical Admixtures: Water Reducers - Part 1
Explore the world of chemical admixtures in concrete, focusing on water reducers in this 20-minute video lecture. Learn about the definition, evolution, classification, and polymer structure of chemical admixtures. Understand the importance of reducing cement content through admixture addition. Dive into the classification of water reducers, including normal water reducers (Lignosulphonate salts, Hydroxycarboxylic acid, and Carbohydrates) and high range water reducers (Polysulphonates, Polycarboxylates, Polyacrylates, and Monovinyl alcohols). Examine the polymer structure and mechanism of each type of water reducer, and gain insights into the dispersion effect. This lecture, part of the NPTEL-NOC IITM series, provides a comprehensive overview of water reducers in chemical admixtures for concrete.