A Computer-Aided Approach to Pozzolanic Concrete Mix Design
Table 6
Maximum water-cementitious material ratios and minimum design strengths for various exposure conditions “Table 6 is reproduced from Kosmatka et al. [39] (under the creative commons attribution license/public domain).”
Exposure condition
Maximum water-cementitious material ratio by mass for concrete
Minimum design compressive strength, (Mpa)
Concrete protected from exposure to freezing and thawing, application of deicing chemicals, or aggressive substances
Select water-cementitious material ratio on basis of strength, workability, and finishing needs
Select strength based on structural requirements
Concrete intended to have low permeability when exposed to water
0.50
28
Concrete exposed to freezing and thawing in a moist condition or deicers
0.45
31
For corrosion protection for reinforced concrete exposed to chlorides from deicing salts, salt water, brackish water, sea water, or spray from these sources
