Effect of retarder on gypsum setting time
Since the setting time of commonly used beta semi-hydrated gypsum powder is too short to meet the construction requirements of painting and painting, retarder is often added to extend or adjust the se…
Effect of retarder on concrete setting time Experiment instructions
Industrially: Retarder is a new type of concrete admixture. There are a large number of hydroxyl and carboxyl groups in its molecular structure, which can form stable complexes with free Ca 2+ in the …
What effect does retarder have on the initial setting time of concrete?
As we all know: Coagulant is a new type of coagulation material. It has a saturation point. It will increase beyond that saturation point but not too obviously. You can make a sample to find the optim…
How long is the final initial setting time of concrete after adding a retardant?
Generally, the temperature of commercial concrete here is about 18-24 degrees. I usually control the initial setting to 10 hours and the final setting to 12 hours under the conditions of 20 degrees in…
