From: Time impacts of treating pervious concrete with sodium bicarbonate
Batch and Treatment | Age Descriptiona (months) | # of Days Between Casting and Treatment (start) | # of Days Between Treatment (end) and Testing | Average Porosity (%) ± Standard Deviation | Average Compressive Strength (MPa) ± Standard Deviation |
---|---|---|---|---|---|
Batch a WATER | 2 M treat 0.5 M test | 64 | 13 | 25.2 ± 0.5 | 9.8 ± 2.0 |
Batch a NaHCO3 | 2 M treat 1 M test | 64 | 24 | 25.3 ± 0.5 | 7.8 ± 1.1 |
Batch a WATER | 2 M treat 2.5 M test | 64 | 79 | 25.4 ± 0.5 | 10 ± 1.9 |
Batch a NaHCO3 | 2 M treat 2.5 M test | 64 | 74 | 25.4 ± 0.6 | 11 ± 2.3 |
Batch b WATER | 4 M treat 1 M test | 125 | 34 | 23.4 ± 0.6 | 13 ± 1.3 |
Batch b NaHCO3 | 4 M treat 1 M test | 125 | 33 | 23.6 ± 0.5 | 11 ± 1.8 |
Batch c WATER | 4 M treat 1 M test | 118 | 28 | 23.2 ± 0.4 | 11 ± 1.5 |
Batch c NaHCO3 | 4 M treat 1 M test | 118 | 27 | 23.3 ± 0.3 | 12 ± 1.5 |