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- Title
Current Knowledge and Pending Research on Sulfate Resistance of Recycled Aggregate Concrete.
- Authors
Santillán, Lautaro R.; Zega, Claudio J.; Irassar, Edgardo F.
- Abstract
The building sector's sustainability requires construction and demolition waste (CDW) to contribute to the circular economy. Among the CDW, recycled concrete aggregates (RA) have been mainly studied to replace natural aggregates. Still, the approval of their use in regulations and standards is slower. Some barriers to the adoption of RA are related to the durability of recycled aggregate concrete (RAC). However, their physical and mechanical properties have been extensively studied. The durability risks associated with sulfate attacks have been solved for conventional concrete. However, sulfate attack on recycled concrete still raises numerous unsolved questions. In this literature review, the experience of sulfate attack on RAC is compiled and analyzed using a compressive framework highlighting the most relevant aspects of the new matrix in RAC and the old matrix of RA to support its relevance to the damaging sulfate process. Suggestions for further research are presented to understand the full extent of this issue and contribute to incorporating and extending recycled aggregates into existing regulations.
- Subjects
RECYCLED concrete aggregates; CONSTRUCTION &; demolition debris; WASTE products as building materials; SULFATE pulping process; LITERATURE reviews; DETERIORATION of concrete; SULFATES
- Publication
Sustainability (2071-1050), 2024, Vol 16, Issue 3, p1310
- ISSN
2071-1050
- Publication type
Article
- DOI
10.3390/su16031310