Acid Proofing / Acid Proof Bricks
Class I Acid Proof Bricks
Class I is a grade in Shanker Agencies’ acid proof bricks range.
Grade
Class I
Cold crushing strength
40 MPa
Class I technical specification
Typical values for Class I acid proof bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.
| Property | Class I |
|---|---|
| Water absorption | 3-6% |
| Acid resistance | 97% min |
| Alkali resistance | 75% |
| Cold crushing strength | 40 MPa |
| Size | 230×113×65mm std |
Where Class I is used
Acid storage tank lining (H₂SO₄, HNO₃, HCl, H₃PO₄)
Reaction vessel and reactor lining
Absorption tower internal lining
Chimney and flue gas duct lining
Effluent treatment plant sumps and channels
Fertiliser plant, sulphuric acid plant
Pickling tank lining (steel processing)
Battery room floors
Full acid proof bricks range
Compare Class I against every grade SAPL stocks in this family.
| Grade | Water absorption | Acid resistance | Alkali resistance | Cold crushing strength | Size |
|---|---|---|---|---|---|
| Class I | 3-6% | 97% min | 75% | 40 MPa | 230×113×65mm std |
| Class II | <2% | 99% min | 85% | 50 MPa | 230×113×65mm std |
| Class III | <0.5% | 99.5% min | 90% | 55 MPa | Custom |
| Carbon-Fill | <1% | 99.5% min | 95% | 45 MPa | Standard + custom |
| Anti-static | <2% | 99% min | 85% | 45 MPa | 230×113×65mm std |
Installation notes
- 1Surface preparation: concrete or steel substrate must be clean, dry, and free of oil/grease
- 2Apply primer coat, epoxy primer for steel, concrete primer for concrete substrate
- 3Use appropriate acid-resistant cement: furan resin (best acid resistance), phenolic resin, or potassium silicate
- 4Bed mortar thickness: 3–6 mm, applied to both brick and substrate (buttered joint)
- 5Joint width: 3–6 mm, fully filled with acid-resistant mortar
- 6Curing: furan resin mortars, 24 hrs at 25°C before any chemical exposure; heat curing improves performance
- 7Test before commissioning: hydraulic leak test or chemical spot test
Disclaimer: values are typical and compiled by Shanker Agencies Pvt. Ltd. from standard industry data and published manufacturer specifications. They are indicative, not a guarantee. Confirm the exact grade datasheet before specifying. For a certified datasheet or quotation, contact info@shankeragencies.com or +91 98999 57888.