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 2

: 1987

Methods of Test for Repair Materials for Concrete Structures - Part 2: Resin-based Materials

CurrentSpecializedTesting MethodMaterials Science · Demolition, Renovation and Repair of Structures

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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.

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.