What is the purpose of the Recovery Test (Clause 4)?

To measure the ability of the filler to regain its thickness after being compressed, ensuring it maintains a seal within the joint.

What does the Extrusion Test (Clause 6) determine?

It measures how much the filler material is squeezed out of the joint under compression, which should be minimal to prevent damage or trip hazards.

Which code specifies the acceptable limits for these tests?

The acceptance criteria (e.g., minimum recovery percentage) are specified in IS 1838. This code, IS 10566, only defines the testing procedure.

What is the Weathering Test (Clause 8) for?

It assesses the durability of the filler by subjecting it to repeated cycles of freezing, thawing, and boiling to check for disintegration or loss of properties.

IS 10566

: 1983

Methods of test for preformed fillers for expansion joints in concrete paving and structural construction

CurrentSpecializedTesting MethodMaterials Science · Building Construction Practices incl. Painting, Varnishing

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This standard details the laboratory test methods for evaluating preformed fillers used in expansion joints of concrete pavements and structures. It provides procedures for critical performance tests such as recovery after compression, water absorption, and durability under weathering, ensuring the material can accommodate structural movements effectively.

Methods of test for preformed fillers for expansion joints in concrete paving and structural construction

Quick Reference Values

Compression for Recovery Test50% of original thickness

Duration for Recovery Test24 hours compression, 10 minutes recovery

Rate of loading for Compression Test0.13 to 0.25 mm/min

Duration for Water Absorption Test24 hours submergence

Cycles for Weathering Test10 cycles of freezing and thawing

Freezing temperature in Weathering Test-17.8 °C

Practical Notes

This standard only provides the 'how-to' for testing; the acceptance criteria (pass/fail values) must be referenced from the material specification code, typically IS 1838.

Strict adherence to sample conditioning, temperature controls, and loading rates specified in the clauses is crucial for accurate and comparable results.

The tests simulate real-world conditions like compression from thermal expansion, exposure to water, and freeze-thaw cycles that joint fillers experience in their service life.