ISO 19595-2017 Natural aggregates for concrete.pdf

1、 ISO 2017 Natural aggregates for concrete Granulats pour bton INTERNATIONAL STANDARD ISO 19595 First edition 2017-07 Reference number ISO 19595:2017(E) ISO 19595:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwi

2、se specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address bel

3、ow or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 19595:2017(E)Foreword v 1 Scope . 1 2 Normative references 1 3 T erms and definitio

4、ns . 1 4 Symbols and abbreviated terms . 3 5 Geometrical requirements . 3 5.1 General . 3 5.2 Aggregate sizes . 3 5.3 Grading. 4 5.3.1 General 4 5.3.2 Coarse aggregates . 4 5.3.3 Fine aggregates . 5 5.3.4 All-in aggregates . 5 5.3.5 Special use aggregates and declared grading categories 6 5.3.6 Grad

5、ing for filler aggregate . 6 5.3.7 Natural graded 0/8 mm aggregates 6 5.4 Fines content 7 5.5 Fines quality 7 5.6 Particle shape of coarse and all-in aggregates Flakiness index and shape index . 7 5.7 Shell content of coarse and all-in aggregates 8 6 Physical requirements 8 6.1 General . 8 6.2 Resis

6、tance to fragmentation 8 6.3 Resistance to wear . 8 6.4 Particle density and water absorption . 8 6.4.1 Particle density 8 6.4.2 Water absorption . 8 6.5 Bulk density . 8 6.6 Resistance to polishing for surface courses . 8 6.7 Resistance to surface abrasion 9 6.8 Resistance to abrasion from studded

7、tyres to be used for surface courses . 9 7 Chemical requirements . 9 7.1 General . 9 7.2 Petrographic description 9 7.3 Sulfur containing compounds 9 7.3.1 Acid-soluble sulfate . 9 7.3.2 Total sulfur 9 7.4 Chlorides .10 7.5 Constituents which alter the rate of setting and hardening of concrete 10 8

8、Durability 11 8.1 General 11 8.2 Soundness of coarse aggregates .11 8.3 Freeze-thaw resistance .11 8.3.1 Water absorption as a screening test for freeze-thaw resistance 11 8.3.2 Resistance to freezing and thawing 12 8.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions

9、) . 12 8.4 Volume stability Drying shrinkage 13 8.5 Alkali-silica reactivity .13 9 Evaluation of conformity .13 10 Designation .14 ISO 2017 All rights reserved iii Contents Page ISO 19595:2017(E)10.1 Designation and description 14 10.2 Additional information for the description of an aggregate .14 1

10、1 Marking and labelling 14 Annex A (informative) Guidanc e on the description of c oarseness/fineness of fine aggr eg at es .15 Annex B (informative) Guidance on the effects of some chemical constituents of aggregates on the durability of concrete in which they are incorporated .16 Bibliography .18

11、iv ISO 2017 All rights reserved ISO 19595:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each

12、 member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internationa

13、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different

14、 types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall

15、 not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents). Any trade name used in this document

16、 is information given for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organ

17、ization (WTO) principles in the Technical Barriers to Trade (TBT), see the following URL: w w w . i s o .org/ iso/ foreword .html. This document was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre- stressed concrete, Subcommittee SC 3, Concrete production and executi

18、on of concrete structures. ISO 2017 All rights reserved v Natural aggregates for concrete 1 Scope This document 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 a

19、n oven-dried particle density greater than 2,00 Mg/m 3(2 000 kg/m 3 ) in accordance with ISO 22965 (all parts). This document 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 mate

20、rial 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

21、). 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includ

22、ing any amendments) applies. ISO 6274, Concrete Sieve analysis of aggregates ISO 6782, Aggregates for concrete Determination of bulk density ISO 6783, Coarse aggregates for concrete Determination of particle density and water absorption Hydrostatic balance method ISO 7033, Fine and coarse aggregates

23、 for concrete Determination of the particle mass-per-volume and water absorption Pycnometer method 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addres

24、ses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp 3.1 aggregate granular material of natural, manufactured or recycled origin used in construction 3.2 natural aggregate aggregate from mineral sources which

25、has been subjected to nothing more than mechanical processing, such as crushing, washing and sieving INTERNATIONAL ST ANDARD ISO 19595:2017(E) ISO 2017 All rights reserved 1 ISO 19595:2017(E) 3.3 aggregate size designation of aggregate in terms of lower (d) and upper (D) sieve sizes expressed as d/D

26、 Note 1 to entry: This designation accepts the presence of some particles which are retained on the upper sieve (oversize) and some which pass the lower sieve (undersize). Note 2 to entry: Other designations may be used where specified in a national standard. 3.4 grading particle size distribution e

27、xpressed as the percentages by mass passing a specified set of sieves 3.5 f i ne s particle size fraction of an aggregate that passes the 0,063 mm sieve Note 1 to entry: The 0,075 mm sieve may be used where specified in a national standard. 3.6 coarse aggregate designation given to the larger aggreg

28、ate sizes with D greater than 4 mm and d greater than or equal to 1 mm Note 1 to entry: Aggregates that do not fit the definitions for fine or coarse (1 mm to 3 mm or 2 mm to 4 mm) are treated as coarse aggregate. Note 2 to entry: Coarse aggregate may be separated by other sizes where specified in a

29、 national standard. 3.7 f in e ag g rega te designation given to the smaller aggregate sizes with D less than or equal to 4 mm and d = 0 Note 1 to entry: Fine aggregate can be produced from natural disintegration of rock or gravel and/or by the crushing of rock or gravel or processing of manufacture

30、d aggregates. Note 2 to entry: Fine aggregate may be separated by other sizes where specified in a national standard. 3.8 all-in aggregate aggregate consisting of a mixture of coarse and fine aggregates and fines with D greater than 4 mm and d = 0 Note 1 to entry: It can be produced without separati

31、ng into coarse and fine fractions or it can be produced by combining coarse and fine aggregates. 3.9 f ill e r ag g rega te aggregate, most of which passes a 0,063 mm sieve, which can be added to construction materials to provide certain properties Note 1 to entry: Other sieve sizes, as the 0,075 mm

32、 sieve, may be used where specified in a national standard. 3.10 declared value value declared and documented by a manufacturer, which is derived from measured values under specified conditions and rules, for identification of performance requirements2 ISO 2017 All rights reserved ISO 19595:2017(E)

33、4 Symbols and abbreviated terms Symbol Description AAV resistance to surface abrasion aggregate abrasion value AN resistance to abrasion from studded tyres Nordic abrasion value AS acid soluble sulfate content F resistance to freezing and thawing percentage loss of mass f fines content F EC resistan

34、ce to freezing and thawing in the presence of salt (extreme conditions) percentage loss of mass FI particle shape of coarse and all-in aggregates flakiness index LA resistance to fragmentation Los Angeles coefficient MB fines quality methylene method MD resistance to wear micro-Deval coefficient MS

35、magnesium sulfate value PSV resistance to polishing of surface courses polished stone value S total sulfur content SC shell content of coarse and all-in aggregates SE fines quality sand equivalent method SI particle shape of coarse and all-in aggregates shape index SS sodium sulfate value SZ resista

36、nce to fragmentation impact value WA water absorption value after 24 h 5 Geometrical requirements 5.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the aggregate. When required,

37、 the aggregates shall be tested as specified in this clause to determine the relevant geometrical properties. NOTE Guidance on selection of appropriate categories for specific applications can be found in national provisions in the place of use of the aggregate. 5.2 Aggregate sizes All aggregates sh

38、all be described in terms of aggregate sizes using the designations d/D and shall conform to the grading requirements specified in 5.3, except for aggregates added as fillers, which shall be specified as filler aggregate. Aggregate sizes shall be specified using a pair of sieve sizes selected from o

39、ne of the basic sets given in Table 1. The basic sets are based on the R 20 series in ISO 565. Other sieves specified in national standards may be used. ISO 2017 All rights reserved 3 ISO 19595:2017(E) Table 1 Sieve sizes for specifying aggregate sizes Basic set 1 mm Basic set 2 mm Basic set 3 mm Ba

40、sic set 4 mm 0 0 0 0 1 1 1 1,25 (1,2) 2 2 2 2,5 4 4 4 - 5,6 (5) 5,0 6,3 (6) 8 8 8 10 10 11,2 (11) 12,5 (12) 14 16 16 16 20 20 22,4 (22) 31,5 (32) 31,5 (32) 31,5 (32) 31,5 (30) 40 40 45 56 50 63 80 100 63 80 100 63 80 100 63 (60) 80 100 NOTE Rounded sizes shown in parentheses can be used as simplifie

41、d descriptions of aggregate sizes. 5.3 Grading 5.3.1 General The grading of the aggregate shall be determined in accordance with ISO 6274 and shall conform to the requirements of 5.3.2 to 5.3.5 as appropriate to its aggregate size d/D. Aggregates may comprise single sizes, all-in aggregates or combi

42、nations of two or more sizes. Aggregates supplied as a mixture of different sizes or types should be uniformly blended. When aggregates of significantly different density are blended, caution is necessary to avoid segregation. Where the specification requires the use of sieves which are a fraction o

43、f the upper sieve size (e.g. D/2 or D/1,4) the sieve chosen shall be the next nearest from basic set plus set 1 or basic set plus set 2. NOTE When a sieve size of the ISO 565 R 20 series is closer to the calculated d/2, D/1,4 or D/2 size, the producer can choose to use this R 20 size. 5.3.2 Coarse a

44、ggregates Coarse aggregates shall conform to the general requirements specified in Table 2, appropriate to their size designation D/d.4 ISO 2017 All rights reserved ISO 19595:2017(E) Table 2 Overall limits and tolerances for coarse aggregate Coarse aggregate Property Requirement Tolerance class 1 To

45、lerance Class 2 Tolerance Class 3 Particle distribution (grading): percentage d/2 percentage d percentage mid sieve, if D 2d percentage D percentage 0,125 mm percentage 0,5 mm percentage 2 mm percentage DDeclared value 5,0 % Declared value 8,0 % Declared value 15,0 % Declared value 9,0 %Declared val

46、ue 3,0 % Declared value 5,0 % Declared value 10,0 % Declared value 7,0 %Declared value 2,0 % Declared value 3,0 % Declared value 7,0 % Declared value 6,0 % Fines Declared value 5,0 % Declared value 3,0 % Declared value 2,0 % Particle density Declared value 0,05 Mg/m 3 Declared value 0,03 Mg/m 3 Decl

47、ared value 0,02 Mg/m 3 Water absorption Declared value 0,5 % Declared value 0,3 % Declared value 0,2 % 5.3.4 All-in aggregates All-in aggregates shall conform to the general requirements of Table 4, appropriate to their upper sieve size D. National Standards specifying other sieve sizes may be used

48、where available. ISO 2017 All rights reserved 5 ISO 19595:2017(E) Table 4 Tolerances on declared typical grading for all-in aggregate All-in aggregate Property Requirement Tolerance class 1 Tolerance Class 2 Tolerance Class 3 Particle distribution (grading): percentage 0,063 mm percentage 0,250 mm p

49、ercentage D/2 percentage D percentage 2DDeclared value 7,0 % Declared value 25,0 % Declared value 25,0 % Declared value 7,5 % 100 %Declared value 5,0 % Declared value 25,0 % Declared value 20,0 % Declared value 5,0 % 100 %Declared value 3,0 % Declared value 20,0 % Declared value 10,0 % Declared value 5,0 % 100 % Fines Declared value 3,0 % Dec