Abstract
The progress of alkali–silica reaction (ASR) in specimens consisting of reactive glass aggregate in a cement matrix was monitored using X-ray micro-computed tomography. The technique was used to study the formation of cracks in both aggregate particles themselves and the matrix, as well as to measure expansion. A model, based on the progressive formation of cracks in concrete, is developed and used to further examine the process of ASR, and the manner by which approaches used to control ASR expansion function. It is concluded that ASR-controlling measures work by reducing available alkali ions, but also by weakening the cement matrix. This means that a similar number of cracks forms in both highly expansive instances of ASR and instances where expansion is limited by the use of controlling measures, with only crack width differing.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.