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 meters of concrete requires 0.16*100=16kg

four ten thousandths?

what kind of cement, what kind of retarder, what kind of mix ratio

can you draw conclusions without even knowing it?

i do commercial mixing. i put at least 6 kilograms of c30 concrete retarder per square meter. as if the active ingredient is only 1 kilogram, then 100 square meters of concrete also needs 100 kilograms of active ingredients

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