A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Assessing aggregates for alkali-aggregate reaction potential
The identification of alkali-reactive aggregates has been a challenge since alkali-aggregate reactions were first diagnosed. Standards, test methods and recommendations have been developed on a local and international basis. The Rilem recommendations regarding alkali-aggregate reactions are based on a methodology in which a series of laboratory tests is suggested. The assessment starts with a petrographic examination of the aggregate, followed by rapid screening tests and concrete expansion tests. This methodology has been carried out by a number of laboratories worldwide. However, some of the tests have not been totally satisfactory as sometimes the results do not correlate with each other or with field performance. A summary of the thresholds, advantages and limitations of each test according to the findings of Rilem TC 219-ACS is presented.
Assessing aggregates for alkali-aggregate reaction potential
The identification of alkali-reactive aggregates has been a challenge since alkali-aggregate reactions were first diagnosed. Standards, test methods and recommendations have been developed on a local and international basis. The Rilem recommendations regarding alkali-aggregate reactions are based on a methodology in which a series of laboratory tests is suggested. The assessment starts with a petrographic examination of the aggregate, followed by rapid screening tests and concrete expansion tests. This methodology has been carried out by a number of laboratories worldwide. However, some of the tests have not been totally satisfactory as sometimes the results do not correlate with each other or with field performance. A summary of the thresholds, advantages and limitations of each test according to the findings of Rilem TC 219-ACS is presented.
Assessing aggregates for alkali-aggregate reaction potential
Isabel Fernandes (author) / Özge Andiç-Çakir / Doug Hooton
2016
Article (Journal)
English
BKL:
56.45
Baustoffkunde
Alkali-aggregate reaction in California concrete aggregates
| Engineering Index Backfile | 1953
Elsevier | 1991