This Method is For Determination of sulfates Affects to Aggregates. This Method is more useful for Bridge Constructions, also for places which are under sulfates attack ( like waste water tanks or sewage storage). Also is a goof guide when other necessary information is missing or not available.
1. Sieves 2. Container (basket) 3. Holding instrument 4. Balance
5. Oven 6. Special Solution ( Sodium Sulfate)
Follow the instruction in Sampling Page .
For Fine aggregate the materials mist be passed from sieve (9.5 mm). Each size of the sample must not exceed 100 Gr. samples must be divided into sizes as Follow:
| Passing from Sieve | Retained on Sieve | Amount (Gr) | Sieve for washing |
| 9.5 mm(1/2 in) |
4.75mm (No 4) |
100±0.1 |
4.75mm (No 4) |
| 4.75 mm (No 4) | 2.36 mm (No 8) | 100±0.1 | 2.36 mm (No 8) |
| 2.36 mm (No 8) | 1.18 mm (No 16) | 100±0.1 | 1.18 mm (No 16) |
| 1.18 mm (No 16) | 600µm (No 30) | 100±0.1 | 600µm (No 30) |
| 600µm (No 30) | 300µm (No 50) | 100±0.1 | 300µm (No 50) |
For Coarse aggregates the sample must satisfy the following amount and deviation:
| Passing from Sieve | Retained on Sieve | Amount (Gr) | Sieve for washing |
| 63mm | 50mm | 3000±300 | 32mm |
| 50mm | 37.5mm | 2000±200 | 32mm |
| 37.5mm | 25mm | 1000±50 | 16mm |
| 25mm | 19.5mm | 500±30 | 16mm |
| 19.5mm | 12.5mm | 670±10 | 8mm |
| 12.5mm | 9.5mm | 330±5 | 8mm |
| 9.5mm | 4.75mm | 330±5 | 4mm |
For Coarse aggregates all Materials must be retained on sieve No 4 (4.75 mm).