Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt
@JournalArticle {2382,
title = {Results comparison of alkali-reactivity tests for same aggregates, using a kinetic model},
journal = {Key Engineering Materials},
volume = {634},
year = {2015},
month = {2015-02-01 00:00:00},
pages = {498-505},
publisher = {Trans Tech Publications Ltd},
abstract = {A kinetic based comparison between expansion tests for alkali-aggregate reactivity was
carried out deriving critical rates from test criteria, in an earlier paper. The present paper checks the
assumptions and models of that earlier comparison against results with real aggregates varying in
alkali reactivity. Using the same approach, for each aggregate, expansion rates for three expansion
tests were estimated, corrected for alkalinity and depicted as an Arrhenius plot. The relationship
used data from NF P18-590, ASTM C 1260 and ASTM C 227 expansion test-methods and shows
linear Arrhenius plots for several aggregates, aligned almost parallel to the line obtained for test
criteria. Aspects related to the different experimental conditions on test-methods and their effects
are discussed. The proposed conclusion is that both standards and aggregate results, in the given
conditions, are not inconsistent from the kinetic point of view. Some suggestions are made for
improving the accuracy of the relationship obtained.
},
keywords = {Aggregates, alkali-silica reaction, Expansion tests, reactivity},
issn = {1013-9826},
doi = {doi:10.4028/www.scientific.net/KEM.634.498},
author = {Gonzalez, L. M. and Santos Silva, A. and Jalali, S.}
}
The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.
Currently CTAC aggregates 37 researchers holding a PhD of which 27 are faculty professors of the Civil Engineering Department. Read more
Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt