ISO 19595:2017
Natural aggregates for concrete
ISO 19595:2017 specifies the properties and requirements of aggregates obtained by processing natural materials and mixtures of these aggregates for use in concrete. It is applicable to aggregates with an oven-dried particle density greater than 2,00 Mg/m3 (2 000 kg/m3) in accordance with ISO 22965 (all parts).
ISO 19595:2017 incorporates a general requirement that natural aggregates are not intended to release any harmful substances in excess of the maximum permitted levels specified for the material or permitted in the national regulations of the place in use.
National provisions, preferably given in a national annex or a project specification, can specify additional or deviating requirements.
NOTE Requirements for the end use of aggregates in concrete are specified in ISO 22965 (all parts).
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Geometrical requirements
5.1 General
5.2 Aggregate sizes
5.3 Grading
5.3.1 General
5.3.2 Coarse aggregates
5.3.3 Fine aggregates
5.3.4 All-in aggregates
5.3.5 Special use aggregates and declared grading categories
5.3.6 Grading for filler aggregate
5.3.7 Natural graded 0/8 mm aggregates
5.4 Fines content
5.5 Fines quality
5.6 Particle shape of coarse and all-in aggregates — Flakiness index and shape index
5.7 Shell content of coarse and all-in aggregates
6 Physical requirements
6.1 General
6.2 Resistance to fragmentation
6.3 Resistance to wear
6.4 Particle density and water absorption
6.4.1 Particle density
6.4.2 Water absorption
6.5 Bulk density
6.6 Resistance to polishing for surface courses
6.7 Resistance to surface abrasion
6.8 Resistance to abrasion from studded tyres to be used for surface courses
7 Chemical requirements
7.1 General
7.2 Petrographic description
7.3 Sulfur containing compounds
7.3.1 Acid-soluble sulfate
7.3.2 Total sulfur
7.4 Chlorides
7.5 Constituents which alter the rate of setting and hardening of concrete
8 Durability
8.1 General
8.2 Soundness of coarse aggregates
8.3 Freeze-thaw resistance
8.3.1 Water absorption as a screening test for freeze-thaw resistance
8.3.2 Resistance to freezing and thawing
8.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions)
8.4 Volume stability — Drying shrinkage
8.5 Alkali-silica reactivity
9 Evaluation of conformity
10 Designation
10.1 Designation and description
10.2 Additional information for the description of an aggregate
11 Marking and labelling
Annex A (informative) Guidance on the description of coarseness/fineness of fine aggregates
Annex B (informative) Guidance on the effects of some chemical constituents of aggregates on the durability of concrete in which they are incorporated
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Geometrical requirements
5.1 General
5.2 Aggregate sizes
5.3 Grading
5.3.1 General
5.3.2 Coarse aggregates
5.3.3 Fine aggregates
5.3.4 All-in aggregates
5.3.5 Special use aggregates and declared grading categories
5.3.6 Grading for filler aggregate
5.3.7 Natural graded 0/8 mm aggregates
5.4 Fines content
5.5 Fines quality
5.6 Particle shape of coarse and all-in aggregates — Flakiness index and shape index
5.7 Shell content of coarse and all-in aggregates
6 Physical requirements
6.1 General
6.2 Resistance to fragmentation
6.3 Resistance to wear
6.4 Particle density and water absorption
6.4.1 Particle density
6.4.2 Water absorption
6.5 Bulk density
6.6 Resistance to polishing for surface courses
6.7 Resistance to surface abrasion
6.8 Resistance to abrasion from studded tyres to be used for surface courses
7 Chemical requirements
7.1 General
7.2 Petrographic description
7.3 Sulfur containing compounds
7.3.1 Acid-soluble sulfate
7.3.2 Total sulfur
7.4 Chlorides
7.5 Constituents which alter the rate of setting and hardening of concrete
8 Durability
8.1 General
8.2 Soundness of coarse aggregates
8.3 Freeze-thaw resistance
8.3.1 Water absorption as a screening test for freeze-thaw resistance
8.3.2 Resistance to freezing and thawing
8.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions)
8.4 Volume stability — Drying shrinkage
8.5 Alkali-silica reactivity
9 Evaluation of conformity
10 Designation
10.1 Designation and description
10.2 Additional information for the description of an aggregate
11 Marking and labelling
Annex A (informative) Guidance on the description of coarseness/fineness of fine aggregates
Annex B (informative) Guidance on the effects of some chemical constituents of aggregates on the durability of concrete in which they are incorporated
Bibliography