The difference between the use of retarder and other admixtures

(1) characteristics retarder and retarding superplasticizer have different retarding effects on the slurry and concrete surface. the retardation effect increases with the increase in dosage. over-admixture will cause the complete cessation of concrete hydration. as the temperature rises, the retarding effect of hydroxycarboxylic acids and salts decreases sharply. when the weather decreases, the retarding time…