ISO 1920-6:2004

Testing of concrete — Part 6: Sampling, preparing and testing of concrete cores

ISO 1920-6:2004 specifies a method for taking cores from hardened concrete, their examination, preparation for testing and determination of compressive strength. ISO 1920-6:2004 does not give guidance on the decision to drill cores or on the locations for drilling nor does it provide procedures for interpreting the core strength results.

Essais du béton — Partie 6: Échantillonnage, préparation et essais sur des carottes de béton

General Information

• Status: Withdrawn
• Publication Date: 30-Sep-2004
• Withdrawal Date: 30-Sep-2004
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: ISO/TC 71/SC 1 - Test methods for concrete
• Drafting Committee: ISO/TC 71/SC 1 - Test methods for concrete
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 11-Oct-2019

Relations

• Revised: ISO 1920-6:2019 - Testing of concrete — Part 6: Sampling, preparing and testing of concrete cores
• Effective Date: 03-Sep-2016

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 1920-6
First edition
2004-10-01


Testing of concrete —
Part 6:
Sampling, preparing and testing
of concrete cores
Essais du béton —
Partie 6: Échantillonnage, préparation et essais sur des carottes de
béton





Reference number
ISO 1920-6:2004(E)
©
ISO 2004

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ISO 1920-6:2004(E)
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ii © ISO 2004 – All rights reserved

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ISO 1920-6:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Definitions. 1
4 Apparatus. 1
5 Taking of cores. 2
6 Examination. 3
7 Preparation of cores . 3
8 Compression test. 4
9 Test results . 5
10 Test report. 5
Annex A (informative) Example of a test report of core strength. 6

© ISO 2004 – All rights reserved iii

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ISO 1920-6:2004(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 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
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 1920-6 was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-
stressed concrete, Subcommittee SC 1, Test methods for concrete.
ISO 1920 consists of the following parts, under the general title Testing of concrete:
 Part 1: Sampling of fresh concrete
 Part 2: Properties of fresh concrete
 Part 3: Making and curing test specimens
 Part 4: Strength of hardened concrete
 Part 5: Properties of hardened concrete other than strength
 Part 6: Sampling, preparing and testing of concrete cores
 Part 7: Non-destructive tests on hardened concrete

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INTERNATIONAL STANDARD ISO 1920-6:2004(E)

Testing of concrete —
Part 6:
Sampling, preparing and testing of concrete cores
1 Scope
This part of ISO 1920 specifies a method for taking cores from hardened concrete, their examination,
preparation for testing and determination of compressive strength.
The part of ISO 1920 does not give guidance on the decision to drill cores or on the locations for drilling nor
does it provide procedures for interpreting the core strength results.
NOTE It is recommended that before coring, full agreement should be reached by all parties on the need for core
testing and how the results should be interpreted.
2 Normative references
The following referenced documents are essential for the application of this part of ISO 1920. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 1920-4, Testing of concrete — Part 4: Strength of hardened concrete
ISO 1920-5, Testing of concrete — Part 5: Properties of hardened concrete other than strength
EN 12390-4:2000, Testing hardened concrete — Part 4: Compressive strength — Specification for testing
machines
3 Definitions
For the purposes of this document, the following definition applies.
3.1
core strength
compressive strength of the cored specimen, as determined by the test defined in this part of ISO 1920
4 Apparatus
4.1 Core drill, capable of extracting cores from the hardened concrete to the dimensions specified in 5.3
with the tolerances specified in Clause 7.
4.2 Compression testing machine, conforming to EN 12390-4 or to an equivalent national document and
related to the size of specimens and their expected failure load.
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ISO 1920-6:2004(E)
NOTE Concrete compression testing machines conforming to EN 12390-4 might need adaptation in order to test
cores smaller than 90 mm diameter for compression.
4.3 Balance or scale, capable of determining the mass of the core, as tested, to within an accuracy of
0,1 % of the mass.
4.4 Callipers and/or rules, capable of measuring the dimensions of the core and the steel reinforcement to
a tolerance of ± 1 %.
4.5 Gauge, capable of establishing that the relevant flatness of the specimen is within the requirements of
Clause 7.
4.6 Squares and gauges, capable of establishing that the perpendicularity and parallelism of specimens
and moulds are within the requirements of Clause 7.
5 Taking of cores
5.1 Location
Possible structural implications resulting from taking a core shall be considered prior to drilling and the
location where the cores are to be taken specified.
Cores should preferably be taken at points not near to joints or edges of the concrete element to avoid as far
as possible any reinforcement.
5.2 Drilling
Unless otherwise specified, the cores shall be drilled perpendicular to the surface in such a manner as not to
dam
...