About this code
Eight-part standard covering all test procedures for aggregates: particle size, specific gravity, mechanical properties, soundness, alkali reactivity, and more.
Key sections
- 01Part 1: Particle size and shape
- 02Part 2: Estimation of deleterious materials
- 03Part 3: Specific gravity, density, voids
- 04Part 4: Mechanical properties
- 05Part 5: Soundness
- 06Part 6: Bulk density
- 07Part 7: Alkali aggregate reactivity
- 08Part 8: Petrographic exam
Critical clauses
Clause Part 1Sieve Analysis
Standard procedure for grading curves.
In practiceRun weekly at RMC plant.
Clause Part 4Crushing Value
Aggregate crushing value <= 30% (concrete), <= 45% (lean).
In practiceReject if ACV > 30% for structural concrete.
Clause Part 5Soundness
Mass loss after sodium sulphate cycles.
In practice<12% loss after 5 cycles.
Practical implications
For specifiers
Reference specific parts in tender.
For suppliers
Maintain test logs per quarter.
For executors
Demand test certificates from RMC.
FAQs
How often to test aggregate?
Weekly grading; quarterly full physical tests.
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