ISO/TC 71/SC 1 - Test methods for concrete

This document specifies the test method, sampling, procedure and determination of cement paste containing a flash setting accelerating admixture for sprayed concrete. Related terms and definitions are also given. This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

This document describes procedures for determining certain properties of aggregates for use in concrete for the determination of the loose or compacted bulk density, the determination of particle density and water absorption using the hydrostatic balance method and the determination of the particle mass-per-volume and water absorption using the Pycnometer method.

This document specifies procedures for testing the strength of hardened concrete.

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.

This document gives the test method for determination of ten percent fines value (TFV) of aggregates. This method gives a relative measure of the resistance of the aggregate crushing under the gradually applied compressive load. It covers two sets of procedures: — the first procedure is applicable for aggregates tested in dry condition; and — the second procedure is applicable for aggregates tested in a soaked condition. NOTE 1 Generally, the test can be done under dry conditions. However, the engineer in charge can choose to test them in soaked condition, if necessary. The method is applicable to aggregates of different strengths covering both weak and strong aggregates. It is applicable to standards aggregates, i.e. passing a 14,0 mm test sieve and retained on 10,0 mm test sieve. National standards can also exist for the aggregate size fraction to be taken for this test. In case this definite size fraction is not available, the test can be made on other sizes, given in Annex A. The comparison of results of non-standard sizes with standard size aggregates is not possible due to lack of available data. NOTE 2 Minor variations in grading divisions can be allowed in respective national standards.

This document describes the Los Angeles test, for determining the resistance to fragmentation of coarse aggregates.

This document specifies the shape and dimensions of concrete test specimens for strength tests and the methods of making and curing these test specimens.

This document covers the method for determining the setting time of concrete with slump greater than zero, by testing mortar sieved from the concrete mixture. The initial setting time and the final setting time are the time intervals required for the mortar sieved from the concrete mixture to reach the specified values of penetration resistance after the initial contact of cement and water. The method can be used for determining the effect of variables such as temperature, type and content of cement, concrete mix proportions and admixtures, on the time of setting and hardening characteristics of concrete. This test method is applicable under controlled laboratory conditions, as well as under field conditions.

This document specifies a method for taking cores from hardened concrete, their examination, preparation for testing and determination of compressive strength. This document does not give guidance on the decision to drill cores or on the locations for drilling and does not provide procedures for interpreting the core strength results. 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.

This document specifies methods for testing the density and depth of water penetration of hardened concrete.

This document specifies procedures for testing fresh self-compacting concrete. It specifies the following test methods: determination of consistence (slump flow test), V funnel test, L box test, sieve segregation test, J-ring test and self-compactability test.

This document specifies a procedure for testing the density and void content of freshly mixed and hardened pervious concrete specimens for pavement in the laboratory or cored from field placements. This document also specifies formulae for calculating the density and void content of pervious concrete.

ISO 1920-2:2016 specifies procedures for testing fresh concrete. It specifies the following test methods: determination of consistence (slump test, Vebe test, degree of compactability, flow-table test for high‑fluidity concrete, and the slump-flow test), determination of fresh density and determination of air content by the pressure-gauge method and by the water-column method.

ISO 17785-1:2016 specifies the procedure for testing the infiltration rate of hardened pervious concrete pavement specimens in the laboratory. It is not a method for measuring the permeability of pervious concrete. The specimens can either be prepared in the laboratory or cored from field placements, but not representing field conditions. This part of ISO 17785 also specifies procedures to make and cure hardened pervious concrete samples in the laboratory.

This procedure specified in ISO 1920-12:2015 is a method for evaluating the carbonation resistance of concrete using an accelerated carbonation test. After a period of preconditioning, the test is carried out under controlled exposure conditions using an increased level of carbon dioxide to which, the vertical sides of the specimen are exposed. The test results are not designated to set performance requirements but to compare the carbonation resistance of different concretes of the same strength class, which are used in the same environmental conditions.

ISO 1920-11:2013 specifies a method for determining the unidirectional non-steady-state chloride penetration parameters of conditioned specimens of hardened concrete. The test method enables the determination of the chloride penetration at a specified age, e.g. for ranking of concrete quality by comparative testing.

ISO 1920-10:2010 specifies a test method for the determination of the static modulus of elasticity in compression of hardened concrete, on test specimens which are cast or taken from a structure.

ISO 1920-9:2009 specifies a method for determining the creep of standard concrete test cylinders subjected to a sustained longitudinal compressive load.

ISO 1920-8:2009 specifies a method for determining the length changes of concrete specimens due to drying in air, and the method of preparing and curing the concrete specimens to be tested.

ISO 1920-7:2004 specifies non-destructive test methods for use on hardened concrete. The methods included are: a) determination of rebound number; b) determination of ultrasonic pulse velocity; and c) determination of pull-out force.

ISO 1920-1:2004 specifies procedures for the sampling of fresh concrete. The samples are used for the testing of properties of fresh concrete, or for making test specimens to determine the properties of hardened concrete.

ISO 1920-4:2005 specifies procedures for testing the strength of hardened concrete.

ISO 1920-2:2005 specifies procedures for testing fresh concrete. It specifies the following test methods: determination of consistence (slump test, Vebe test, degree of compactability, flow table test and for high fluidity concrete, the slump-flow test), determination of fresh density and determination of air content by the pressure gauge method and by the water column method.

ISO 1920-5:2004 specifies procedures for testing properties of hardened concrete other than strength.

ISO 1920-3:2004 specifies the shape and dimensions of concrete test specimens for strength tests and the methods of making and curing these test specimens.

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.

Specifies a method for the determination of the particle mass-per-volume and the water absorption of fine and coarse aggregates for concrete. The method is based on the use of a pyknometer for the determination of the volume of the aggregate particles. Covers also definitions, apparatus and equipment, sampling, procedure, calculations, and test report.

Specifies methods of making and curing test specimens for strength tests. Covers also moulds, compaction of the concrete, marking and transport of test specimens and the test report. Information gained from testing the specimens is intended for use in the assessment of concrete production, both by the supplier and/or the customer.

Specifies methods of sampling fresh concrete and gives definitions, procedure and recording of samples.

Specifies a method for the determination of the bulk density of dry or moist aggregates (normal or lightweight) for concrete in either loose or compacted condition. Describes apparatus, sampling, determination of uncompacted and compacted bulk density, expression of results, and test report.

Specifies a method, using test sieves, for the determination of the particle size distribution of normal weight aggregates for concrete. Covers also sampling, apparatus, preparation of test sample, sieving, calculation and test report.

Specifies a method for the determination of the particle density and water absorption of coarse aggregates, having a nominal size greater than 4 mm, for concrete. Covers definitions, apparatus and materials, sampling, procedure, expression of results, and test report.