ISO 20290-3:2019 PDF

Aggregates for concrete — Test methods for mechanical and physical properties — Part 3: Determination of aggregate crushing value (ACV)

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Title (English):

ISO 20290-3:2019

Aggregates for concrete — Test methods for mechanical and physical properties — Part 3: Determination of aggregate crushing value (ACV)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 8
Publication date:: November 26, 2019
Edition:: ISO IS 20290 edition 1 version 1
ICS:: 91.100.30

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Description (English):

This document gives the determination of aggregate crushing value (ACV) of aggregates. This gives a relative measure of the resistance of the aggregate crushing under the gradually applied compressive load. The method is applicable to aggregates passing a 14,0 mm test sieve and retained on a 10,0 mm test sieve. For other size fractions, a recommended method is described in Annex A. The aggregate size fraction taken for this test can also be as per the relevant national standards. NOTE Minor variations in grading divisions can be allowed in respective national standards. The method is not suitable for testing aggregates with an aggregate crushing value higher than 30. In such cases, the method described in ISO 20290-4 is applicable.

Technical details

Technical committee: ISO/TC 71/SC 1 - Test methods for concrete
SKU: ISO 20290-3:2019

Abstract

Overview

ISO 20290-3:2019 specifies a laboratory test method for determining the Aggregate Crushing Value (ACV) of coarse aggregates for concrete. The ACV provides a relative measure of an aggregate’s resistance to crushing under a gradually applied compressive load. The standard is primarily applicable to aggregates passing a 14.0 mm test sieve and retained on a 10.0 mm test sieve; Annex A gives recommendations for other size fractions. The method is not intended for aggregates with ACV > 30 (see ISO 20290-4 in such cases).

Key topics and technical requirements

Scope and intent: Measure resistance of aggregates to crushing using a standard compaction and compressive loading regime to produce a percentage of fines.
Specimen size and grading: Default size fraction is 14.0 mm to 10.0 mm; other fractions covered in Annex A or by national standards.
Apparatus:
- Compression testing machine capable of up to 500 kN and achieving 400 kN in 10 min ± 30 s.
- Steel cylinder and freely moving plunger (nominal 150 mm internal diameter) with defined dimensional tolerances.
- Tamping rod (16 ± 1 mm diameter), cylindrical measure, test sieves (14.0 mm, 10.0 mm and 2.36 mm compliant with ISO 565), oven (105 ± 5 °C), balance, rubber mallet and brush.
Procedure highlights:
- Prepare three specimens of the designated size fraction; compact in three layers with 25 strokes per layer using the tamping rod.
- Apply compressive load to reach 400 kN in ~10 minutes; recover crushed material and sieve on 2.36 mm.
- Calculate ACV = (mass passing 2.36 mm / total specimen mass) × 100 (expressed to 1 decimal).
- Repeat and average results; rules provided for repeat tests if variability exceeds specified limits.
Limitations: Not suitable for aggregates with ACV > 30; use ISO 20290-4 for such materials.

Applications and users

Practical uses:
- Quality control of coarse aggregates for concrete and pavement materials.
- Comparative assessment of aggregate crushing resistance for material selection.
- Input to mix design and performance specifications where aggregate strength and durability matter.
Primary users:
- Materials and testing laboratories, concrete and asphalt producers, quarry operators, civil engineers, specifications authors and standards bodies.

Related standards

ISO 565 - Test sieves (referenced for sieve compliance)
ISO 20290 series - other parts cover related mechanical and physical property tests (see ISO 20290-4 for high-ACV materials)

Keywords: ISO 20290-3:2019, aggregate crushing value, ACV, aggregates for concrete, test methods, 14 mm sieve, 10 mm sieve, compression testing machine, 2.36 mm sieve, Annex A.

Related standards

Mentioned in the description and other ISO standards

Abstract

Overview

Key topics and technical requirements

Scope and intent: Measure resistance of aggregates to crushing using a standard compaction and compressive loading regime to produce a percentage of fines.
Specimen size and grading: Default size fraction is 14.0 mm to 10.0 mm; other fractions covered in Annex A or by national standards.
Apparatus:
- Compression testing machine capable of up to 500 kN and achieving 400 kN in 10 min ± 30 s.
- Steel cylinder and freely moving plunger (nominal 150 mm internal diameter) with defined dimensional tolerances.
- Tamping rod (16 ± 1 mm diameter), cylindrical measure, test sieves (14.0 mm, 10.0 mm and 2.36 mm compliant with ISO 565), oven (105 ± 5 °C), balance, rubber mallet and brush.
Procedure highlights:
- Prepare three specimens of the designated size fraction; compact in three layers with 25 strokes per layer using the tamping rod.
- Apply compressive load to reach 400 kN in ~10 minutes; recover crushed material and sieve on 2.36 mm.
- Calculate ACV = (mass passing 2.36 mm / total specimen mass) × 100 (expressed to 1 decimal).
- Repeat and average results; rules provided for repeat tests if variability exceeds specified limits.
Limitations: Not suitable for aggregates with ACV > 30; use ISO 20290-4 for such materials.

Applications and users

Practical uses:
- Quality control of coarse aggregates for concrete and pavement materials.
- Comparative assessment of aggregate crushing resistance for material selection.
- Input to mix design and performance specifications where aggregate strength and durability matter.
Primary users:
- Materials and testing laboratories, concrete and asphalt producers, quarry operators, civil engineers, specifications authors and standards bodies.

Related standards

ISO 565 - Test sieves (referenced for sieve compliance)
ISO 20290 series - other parts cover related mechanical and physical property tests (see ISO 20290-4 for high-ACV materials)

Keywords: ISO 20290-3:2019, aggregate crushing value, ACV, aggregates for concrete, test methods, 14 mm sieve, 10 mm sieve, compression testing machine, 2.36 mm sieve, Annex A.

ISO 20290-3:2019 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

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