- Title
- Crushed bricks as an aggregate replacement for a brittle composite material
- Creator
- Alterman, Dariusz; Page, Adrian W.; Akita, Hiroshi; Albatayneh, Aiman
- Relation
- Brittle Matrix Composites 12 (BMC 2019). Proceedings of 12th International Symposium on Brittle Matrix Composites (BMC 2019) (Warsaw, Poland 23-24 September, 2019) p. 245-255
- Relation
- http://www.ippt.pan.pl/en/news/brittle-matrix-composites-bmc-12-at-ippt-pan
- Publisher
- Institute of Fundamental Technological Research. Polish Academy of Sciences
- Resource Type
- conference paper
- Date
- 2019
- Description
- With the increasing emphasis on all aspects of sustainability in buildings, it is important to fully utilize the properties of masonry units for their full life cycle. Clay bricks can be recycled in the brick manufacturing process, but they also have potential in a crushed form to be used as a concrete aggregate replacement. This paper presents the findings of a laboratory investigation into the use of crushed brick aggregate as a replacement for fine and/or coarse aggregate in concrete. Aggregate tests on crushed brick aggregate were performed as well as compressive strength and indirect tensile strength tests on hardened concrete specimens for recycled brick and conventional aggregate concretes for water-cement ratios ranging from 0.4 to 0.7 at 0.05 intervals. The research investigated not only the effect of aggregate type on concrete mechanical properties, but also the influence of the aggregate porosity on concrete workability. In addition, the nature and influence of the contact layer between the cement paste and the aggregate particles on the concrete properties was studied using optical microscopy and image analysis techniques. Reductions in concrete tensile and compressive strength were observed for the lower water-cement ratio concrete mixtures when fine and/or coarse aggregates were replaced with crushed brick. However, it was found that the porosity of the brick aggregates had a positive curing impact on the hardened concrete properties for concrete mixtures of higher water-cement ratios by storing water and preventing internal shrinkage cracking.
- Subject
- cementitious composite; image analysis technique; recycled brick aggregate; sustainability
- Identifier
- http://hdl.handle.net/1959.13/1445482
- Identifier
- uon:42593
- Identifier
- ISBN:9788365550200
- Language
- eng
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