IS 12118:1987 Part 2 is the Indian Standard (BIS) for methods of test for repair materials for concrete structures - part 2: resin-based materials. This standard provides methods for testing resin-based materials used for repairing concrete structures. It specifies procedures to determine key properties like pot life, compressive and flexural strength, and the critical bond strength to concrete using the slant shear test method.
Prescribes methods of test for resin-based materials used as repair materials for concrete structures.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Minimum Recommended Joint Width | 6 mm | 6 mm (1/4 in) | ASTM C1193 |
| Width to Depth Ratio (for joints > 12mm) | 2:1 | Generally 2:1 is recommended, with depth not exceeding 13mm (1/2 in) | ASTM C1193 |
| Width to Depth Ratio (for joints ≤ 12mm) | 1:1 | 2:1 is still preferred, but depth should not be less than 6mm (1/4 in) | ASTM C1193 |
| Recommended Application Temperature Range | 5°C to 40°C | Generally above 4°C (40°F), but strongly advises following sealant manufacturer's specific data sheet. | ASTM C1193 |
| Requirement for Primer | Generally required for porous surfaces; may be required for non-porous surfaces. | Determined by manufacturer's recommendation and/or job-site adhesion testing. | ASTM C1193 |
| Maximum Recommended Joint Width | 25 mm (up to 40 mm with special precautions) | Typically 25-50 mm (1-2 in), but requires consultation with manufacturer for widths over 25 mm. | ASTM C1193 |
| Backer Rod Compression | 20 to 25 percent | Typically 25 to 50 percent, depending on the backer rod type (open-cell vs closed-cell). | General industry practice referenced in guides like ASTM C1193 |