BS EN 12620:2013
$198.66
Aggregates for concrete
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 60 |
This European Standard specifies the properties of aggregates and filler aggregates obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for use in concrete in conformity with EN 206-1 and concrete used in roads and other pavements and for use in precast concrete products.
It covers aggregates having an oven dried particle density greater than 2,0 Mg/m3 (2000 Kg/m3). It also covers recycled aggregate with particle densities greater than 1,50 Mg/m3 (1 500 kg/m3) with appropriate caveats and recycled fine aggregate with appropriate caveats.
A list of the source materials that have been considered and indicating those which are within the scope of this standard is given in Annex A (normative).
Requirements for the evaluation of conformity of the products to this European Standard are given in EN 16236.
It incorporates a general requirement that aggregates shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination.
The tables in this standard include categories which are common across the four main aggregate standards: EN 12620, EN 13043, EN 13139 and EN 13242. Not all of these categories are appropriate for aggregates for use in concrete.
Categories, notes, comments etc, which are grey shaded, should not be used in concrete.
Aggregates used in construction should comply with all the requirements of the relevant European Standards. These standards include comprehensive and specific requirements for natural aggregates, iron and steel making slag and recycled aggregates, dealing with, for example, the stability of certain basalts, the expansion of certain slags and the constitution of recycled aggregates.
For materials from some other secondary sources however, work is ongoing and the requirements are incomplete. In the meantime, such materials, when placed on the market as aggregates, should conform fully to this standard but may also be required to conform to specific relevant additional requirements at the place of use. Additional characteristics and requirements may be specified on a case by case basis depending upon experience of use of the product, and defined in specific contractual documents.
NOTE Requirements for lightweight aggregates are specified in prEN 13055.
Requirements for the declaration of the potential of aggregates to release regulated dangerous substances are currently under development. Until such time as these are finalised, attention should be paid to requirements at the place of use.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 11 | 4 Geometrical requirements 4.1 General 4.2 Aggregate sizes |
| 12 | 4.3 Grading 4.3.1 General |
| 13 | 4.3.2 Coarse aggregates |
| 14 | 4.3.3 Fine aggregates 4.3.4 All-in aggregates |
| 15 | 4.3.5 Special use aggregates and declared grading categories 4.3.6 Grading of added filler 4.3.7 Natural graded 0/8 mm aggregates |
| 16 | 4.4 Fines content |
| 17 | 4.5 Fines quality |
| 19 | 4.6 Particle shape of coarse and all-in aggregates 4.6.1 Flakiness index and shape index |
| 21 | 4.6.2 Percentage of crushed or broken particles 4.6.3 Angularity of fine aggregates |
| 22 | 4.7 Shell content of coarse and all-in aggregates 5 Physical requirements 5.1 General |
| 23 | 5.2 Resistance to fragmentation |
| 24 | 5.3 Resistance to wear 5.4 Particle density and water absorption 5.4.1 Particle density |
| 25 | 5.4.2 Water absorption 5.5 Bulk density 5.6 Resistance to polishing for application in surface courses 5.7 Resistance to surface abrasion 5.8 Resistance to abrasion from studded tyres for application in surface courses |
| 26 | 6 Chemical requirements 6.1 General 6.2 Petrographic description 6.3 Classification of the constituents of coarse recycled aggregates |
| 29 | 6.4 Sulfur containing compounds 6.4.1 Acid-soluble sulfate 6.4.2 Total sulfur |
| 30 | 6.4.3 Water soluble sulfate content of recycled aggregates 6.5 Chlorides 6.6 Carbonate content for concrete pavement surface courses of fine, and all-in aggregates |
| 31 | 6.7 Other constituents 6.7.1 Constituents which alter the rate of setting and hardening of concrete |
| 32 | 6.7.2 Constituents which affect the volume stability of air-cooled blast furnace slag 6.7.2.1 Dicalcium silicate disintegration of air cooled blast furnace slag 6.7.2.2 Iron disintegration of air cooled blast furnace slag 7 Durability 7.1 General 7.2 Magnesium sulfate soundness of coarse aggregates |
| 33 | 7.3 Freeze – thaw resistance 7.3.1 Water absorption as a screening test for freeze-thaw resistance |
| 34 | 7.3.2 Resistance to freezing and thawing 7.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions) |
| 35 | 7.4 Volume stability – drying shrinkage 7.5 Alkali-silica reactivity 8 Evaluation of conformity 9 Designation 9.1 Designation and description |
| 36 | 9.2 Additional information for the description of an aggregate 10 Marking and labelling |
| 37 | Annex A (normative) Source materials considered in the development of EN 12620 and their status in respect of the scope of the standard |
| 40 | Annex B (informative) Guidance on the description of coarseness/fineness of fine aggregates |
| 41 | Annex C (informative) Guidance on the effects of some chemical constituents of aggregates on the durability of concrete in which they are incorporated C.1 Chlorides C.1.1 Chlorides in natural aggregates C.1.2 Chlorides in recycled aggregates C.2 Sulfates |
| 42 | C.3 Alkali-silica reaction C.3.1 Alkali-silica reaction with natural aggregates C.3.2 Alkali-silica reaction with recycled aggregates (including manufactured glass) C.4 Constituents affecting the surface finish of concrete |
| 43 | C.5 Constituents affecting the setting and hardening of concrete C.6 Constituents of air-cooled blastfurnace slag |
| 44 | Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive ZA.1 Scope and relevant characteristics |
| 47 | ZA.2 Procedures for attestation of conformity of aggregates and fillers ZA.2.1 System(s) of attestation of conformity |
| 49 | ZA.2.2 EC Certificate Declaration of conformity ZA.2.2.1 In case of products following Table ZA.3a |
| 50 | ZA.2.2.2 In case of products following Table ZA.3b |
| 51 | ZA.3 CE marking and labelling |
| 58 | Bibliography |
