Besides using a satisfactory air content in concrete what else will help minimize damage to flatwork from application of deicer salts?
American Concrete Institute Committees recommend:
Use good quality concrete materials passing ASTM specifications.
Make concrete of not less than 3500 psi design strength and of adequate cement content, depending on aggregate size:
Maximum size ofaggregate, inches
per cubic yard
Use a water-cement ratio not higher than 0.50 (Committee 211).
Use a slump that is minimum for placement conditions and not more than 4 inches (Committee 302).
Consolidate the concrete adequately (Committees 201 and 302).
Do not overwork the concrete (Committee 302).
Cure the concrete adequately and provide any protection needed against low temperatures while curing (Committees 201 and 302).
Do not apply deicers until concrete has had at least 6 weeks of temperatures above 40° F (Committee 201), has dried out and has preferably been through one winter (Committee 302).
If greater than normal protection is needed (as on slabs placed in the autumn and subjected to deicer application the first winter), apply a suitable sealer such as boiled linseed oil (Committees 201 and 302).