| Class |
N | F | C |
Increase of drying shrinkage of mortar bars at 28 days, max, difference, in %, over controlA | 0.03 | 0.03 | 0.03 |
Uniformity Requirements: | | | |
In addition, when air-entraining concrete is specified, the quantity of air- entraining agent required to produce an air content of 18.0 vol % of mortar shall not vary from the average established by the ten preceding tests or by all preceding tests if less than ten, by more than, % | 20 | 20 | 20 |
Effectiveness in Controlling Alkali-Silica Reaction:B | | | |
Expansion of test mixture as percentage of low-alkali cement control, at 14 days, max, % | 100 | 100 | 100 |
Effectiveness in Contributing to Sulfate Resistance:C | | | |
Procedure A: | | | |
Expansion of test mixture: | | | |
For moderate sulfate exposure after 6 months exposure, max, % | 0.10 | 0.10 | 0.10 |
For high sulfate exposure after 6 months exposure, max, % | 0.05 | 0.05 | 0.05 |
Procedure B: | | | |
Expansion of test mixture as a percentage of sulfate resistance cement control after at least 6 months exposure, max,% | 100 | 100 | 100 |