RILEM Recommended Test Method AAR-0 'Detection of potential alkali-reactivity in concrete' Outline guide to the use of RILEM methods in assessments of alkali-reactivity potential

Title: RILEM Recommended Test Method AAR-0 'Detection of potential alkali-reactivity in concrete'
Outline guide to the use of RILEM methods in assessments of alkali-reactivity potential
Author(s): RILEM TC 191-ARP
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 36
Issue: 261
Issue date: 2003-08-01
Publication year: 2003
Pages: 472 - 479
Total Pages: 8
Nb references: 6
Language: English

Abstract: Initial work by RILEM TC 191-ARP (and its predecessor TC 106) concentrated on the assessment of the alkali-reactivity potential of aggregates, but, in recognition that damaging expansion involves interaction between all the main components of a concrete mix, more recent investigation has focused on the evaluation of particular mix combinations.
After consideration of a wide range of existing and proposed methods for the alkali-aggregate reactivity (AAR) assessment of aggregates, TC 191-ARP initially concentrated upon the preparation of three procedures: petrographical examination (AAR-1), an ultraaccelerated (mortar-bar) expansion test (AAR-2) and an accelerated (concrete prism) expansion test (AAR-3).
Work has continued on an ultra-accelerated performance test for concrete (AAR-4) and also specialised procedures for the assessment of carbonate aggregates (AAR-5).
A recommended scheme for the integrated use of these assessment procedures has now been developed, including some preliminary advice on the interpretation of their findings.
An outline of this draft scheme is described in the following sections and the principles are illustrated by the flow chart given in Fig.
1.

Online publication: 2003-06-27
Classification: RILEM Technical Committees
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/14059