What are the theories on the retarding effect of retarder on cement? A must-see for professionals
It is well known that retarder can help retard cement to a certain extent. As a professional, you must know what kind of theory it is? The theory of retarder’s retarding effect on cement can be …
Tell you the commonly used testing methods for the retarding time of concrete retarder
In fact, the current evaluation method for the retarding effect of concrete retarder is still relatively limited, mainly the measurement of retarder setting time and setting time difference. 1. For cl…
What is the principle of concrete retarder? Is there any relationship between retarding time and temperature?
Retarder, Retarder, is an admixture that delays the setting time of concrete without significantly affecting the later strength. The main ingredients are polyhydroxy compounds, hydroxycarboxylates and…
If 100 cubic meters of concrete plus retarder requires a retarding time of 6 hours, how much retarder should be used?
The dosage of retarder should be determined based on experiments. For example: Calculated based on four ten thousandths of the cementitious material, assuming 400*0.0004=0.16kg/m3 Then 100 cubic meter…
General provisions for retarders and retarding water-reducing admixtures
① In concrete projects, the following retardants or retarding water reducing agents can be used, sugars, lignosulfonates, hydroxycarboxylic acids and their salts, inorganic salts and other amine salts…
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