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Concrete

Concrete particle testing standards are published by ASTM, SIS, and BS. ASTM C172 outlines the standard practice for sampling freshly mixed concrete. SIS-CEN/TR 15840 outlines the evaluation of conformity of fly ash for concrete. BS standards outline products and systems for protection and repair of concrete structure using the granulometry analysis method for dry components of premixed mortar and for fillers for polymer bonding agents.

ASTM C172/C172M-17

Standard Practice for Sampling Freshly Mixed Concrete

1.1 This practice covers procedures for obtaining representative samples of fresh concrete as delivered to the project site on which tests are to be performed to determine compliance with quality requirements of the specifications under which the concrete is furnished ( Note 1 ). The practice includes sampling from stationary, paving and truck mixers, and from agitating and nonagitating equipment used to transport central-mixed concrete and from continuous mixing equipment as described in Specification C685/C685M . 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Note 1: Composite samples are required by this practice, unless specifically excepted by procedures governing the tests to be performed such as tests to determine uniformity of consistency and mixer efficiency. Procedures used to select the specific test batches are not described in this practice, but it is recommended that random sampling be used to determine overall specification compliance. 1.3 This practice also covers the procedures to be used for preparing a sample of concrete for further testing where it is desirable or necessary to remove the aggregate larger than a designated size. This removal of larger aggregate particles is preferably accomplished by wet-sieving. 1.4 The text of this standard references notes and footnotes which provide explanatory material and shall not be considered as requirements of the practice. 1.5 This standard 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 standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. ( Warning Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. 2 ) 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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SIS-CEN/TR 15840:2011

Evaluation of conformity of fly ash for concrete - Guidelines for the application of EN 450-2 (Swedish Standard)

This document specifies the scheme for the evaluation of conformity of fly ash according to EN 450-1:2005. The document provides technical rules for the production control by the producer, including autocontrol testing of samples. It also provides rules for actions to be followed in the event of non-conformity, the procedure for the certification of conformity and requirements for dispatching centres. Guidance EN 450-2 deals with the evaluation of conformity of fly ash submitted for certification. It deals in particular with cases where “further testing” of the product is undertaken, as is the case for attestation system 1 + under the Construction Products Directive. The product for which EN 450-2 applies is defined in EN 450-1:2005 as fly ash for the production of concrete which consists of a fine powder of mainly spherical, glassy particles, derived from burning of pulverised coal, with or without co-combustion materials, which has pozzolanic properties.

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BS EN 12192-1:2002

Products and systems for the protection and repair of concrete structures. Granulometry analysis. Test method for dry components of premixed mortar (British Standard)

This part of the European Standard specifies a method for measuring the particle size distribution of the dry components of repair mortar mixes, being part of a repair product or system, as defined in prEN 1504-3, with a maximum particle size of 8 mm or 10 mm. Part 1 does not cover particle size distribution of separate aggregates, which should be determined in accordance with the test method described in EN 933 series. NOTE Part 2 of this Standard gives a method for granulometric analysis of fillers for polymer bonding agents.

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BS EN 12192-2:1999

Products and systems for the protection and repair of concrete structures. Granulometry analysis. Test method for fillers for polymer bonding agents (British Standard)

This European Standard specifies a method for determining the maximum particle size of fillers in structural bonding agents by the use of a suitable gauge, graduated in micrometres.

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