What is the main output of the IS 9284 test?

The average depth of wear in millimeters, which indicates the concrete's resistance to abrasion (Clause 6).

What kind of specimen is used for the test?

A 7.06 cm concrete cube, typically cured for 28 days, as per Clause 4.

What is the abrasive material specified in the test?

Silicon carbide powder of 180-micron size (Clause 3.1.2).

For what applications is this test important?

It is important for concrete surfaces subjected to abrasive action, such as industrial floors, pavements, and hydraulic structure spillways.

IS 9284

: 1979

Method of test for abrasion resistance of concrete

CurrentSpecializedTesting MethodMaterials Science · Cement, Concrete, Aggregates and RCC

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This standard specifies the method for determining the abrasion resistance of concrete using a standard apparatus. It outlines the preparation of test specimens, the procedure for abrading the surface with a rotating disc and an abrasive powder, and the calculation of wear based on depth measurement.

Method of test for abrasion resistance of concrete

Quick Reference Values

Test specimen size7.06 cm cubes

Pressure on specimen294 N (30 kgf)

Abrasive charge per test2 kg of 180-micron Silicon Carbide powder

Water mixed with abrasive charge0.5 litres

Duration of grinding2 minutes

Rotational speed of grinding lap60 rpm

Key Formulas

Wear (mm) = Σ(Initial Reading - Final Reading) / Number of points measured

Practical Notes

This test is highly sensitive to the planeness of the specimen surface; ensure proper preparation.

The results are primarily for comparing the performance of different concrete mixes in a laboratory setting, not for predicting the exact service life of a structure.

Strictly adhere to the specified type (Silicon Carbide) and size (180-micron) of the abrasive powder as it is a critical parameter.