What is the primary method to test the bond of a resin repair material to old concrete?

The slant shear test as per Clause 5.4 is the standard method for determining bond strength.

How is the working time of a resin repair material measured according to this code?

The working time is determined by measuring the 'Pot Life' as described in Clause 4.2.

Does this standard give acceptable strength values for repair materials?

No, it only provides the standardized methods for testing. The acceptance criteria must be specified by the designer or in the project specifications, often based on the manufacturer's data.

IS 12118 Part 1

: 1987

Polysulphide based sealants - Code of practice for use in building construction

CurrentSpecializedTesting MethodMaterials Science · Waterproofing and Damp Proofing

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This code of practice (Part 1) provides guidelines for the use of two-component polysulphide based sealants for sealing joints in building construction. It covers essential aspects like joint design, surface preparation, sealant application, and curing to ensure a durable, weatherproof seal.

Provides recommendations for the selection, application, and maintenance of polysulphide based sealants in building construction.

Quick Reference Values

Recommended Width to Depth Ratio for Movement Joints2:1

Minimum Recommended Joint Width6 mm

Maximum Recommended Joint Width50 mm

Typical Movement Accommodation Factor (MAF)±25%

Minimum Application Temperature5 °C

Maximum Application Temperature40 °C

Practical Notes

The slant shear test (Clause 5.4) is the most critical test for evaluating the composite action of the repair.

Test results are highly sensitive to mixing proportions, ambient temperature, and the surface preparation of the concrete substrate.

Always perform tests and compare results against the manufacturer's technical data sheet to verify product performance.