Abstract
This paper investigates the anisotropy of the compressive strength and stiffness of concrete in ASRdamaged concrete slabs through an in-depth literature review and experiments. Using Digital Image Correlation (DIC), deformations and crack propagation are closely monitored and analysed. The results show that: (i) The vertical compressive strength and stiffness are lower than the horizontal; (ii) the reduction of the vertical strength and stiffness is mainly due to closure of the horizontal ASR-induced macro-cracks and; (iii) the reduction of the horizontal strength and stiffness is mainly due to the presence of ASR-induced micro-cracks in the cement paste. It is found that the load-carrying capacity and the serviceability for ASR-damaged slabs should be assessed based on the horizontal strength and stiffness.
Original language | English |
---|---|
Article number | 120377 |
Journal | Construction and Building Materials |
Number of pages | 16 |
ISSN | 0950-0618 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Alkali-silica reaction
- Compressive strength
- Stiffness
- Anisotropy
- Digital Image Correlation