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 clean slurry, the standard method is the test specified in “Cement standard consistency water consumption, setting time, stability test method” (GBT 1346-2011) method. The instrument…