Research Article
The Influence of Aggregate Size and Binder Material on the Properties of Pervious Concrete
Table 4
Chemical composition of sodium hydroxide.
| | Test item | Test results |
| | Chloride (Cl) | Max. 0.005% | | Sulfate (SO4) | Max. 0.003% | | Silicate (SiO2) | Max. 0.01% | | Phosphate (PO4) | Max. 0.001% | | Heavy metals (arsenic and lead) | Max. 0.001% | | Iron (Fe) | Max. 0.0007% | | Aluminum (Al) | Max. 0.003% | | Calcium (Ca) | Max. 0.001% | | Magnesium (Mg) | Max. 0.0005% | | Potassium (K) | Max. 0.1% | | Total nitrogen (N) | Max. 0.001% | | Arsenic (As) | Max. 0.0002% | | Sodium carbonate (Na2CO3) | Max. 2.0% | | Assay (NaOH) | Max. 95.0% |
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