APPLICATION
PREPARATION of the MORTAR
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Ensure that the mixture ratio of cement and water for the concrete that shall be added with SUTOP® B-21 is less than 0.55.
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Thoroughly mix SUTOP® B-21 before using.
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Application time is approximately 45 minutes after being added to concrete.
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When type II and III type of Portland cement is used, it is advisable to use setting retarder.
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Conformity tests shall be performed before use.
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Crystallization may occur if SUTOP® B-21 is stored below +8 ºC. The material can be re-used after mixing and homogenizing.
CONSUMPTION
For concretes to be insulated using SUTOP® B-21
With a ratio of 2% of the cement amount if Water/cement ratio (w/c) ≤ 0.45
With a ratio of 2.5% of the cement amount if 0.45 < Water/cement ratio (w/c) ≤ 0.50
With a ratio of 3% of the cement amount if 0.50 < Water/cement ratio (w/c) ≤ 0.55
For concretes with Water/cement ratio (w/c) ≥ 0.55; water insulation with SUTOP® B-21 is not suitable.
Dosing at concrete plant:
SUTOP® B-21 may be added to the mixture with the mixture water as the final component.
Dosing at construction site:
SUTOP® B-21 is added to the mixer at a ratio of 2-3% and mixed for 3-5 minutes. Mixing shall be performed without delay.