Print Email Facebook Twitter Drying shrinkage of alkali-activated slag concrete with natural/recycled aggregates Title Drying shrinkage of alkali-activated slag concrete with natural/recycled aggregates Author Dong, H. (TU Delft Materials and Environment) Yao, X. (TU Delft Materials and Environment; Shandong University) Burgmann, S (University of Kaiserslautern) Ye, G. (TU Delft Materials and Environment; Universiteit Gent) Contributor Ye, Guang (editor) Dong, Hua (editor) Liu, Jiaping (editor) Schlangen, Erik (editor) Miao, Changwen (editor) Date 2021 Abstract Each year a large amount of construction and demolition waste (CDW) is generated in the European Union. For sustainability development the CDW is recycled and re-used. To promote the use of CDW, recycled aggregates from CDW were incorporated in alkali-activated concrete (AAC), which mainly consisted of secondary materials or industrial by-products. This study investigated the influence of recycled aggregates on workability, compressive strength and drying shrinkage of slag-based AAC. Properties of conventional concrete with natural/recycled aggregates were also tested for comparison. The results showed that the pre-saturated recycled aggregates only slightly affected the workability of conventional concrete or AAC. Recycled aggregates reduced compressive strength of both conventional concrete and AAC due to extra water for pre-saturation of the recycled aggregates. The mass loss of the concrete specimens upon drying was greater for low-strength concrete than for moderate strength concrete. The recycled aggregates increased the mass loss and drying shrinkage of AAC. For conventional concrete, low-strength concrete had a higher drying shrinkage compared with moderate strength concrete. On the contrary, for AAC in this study, low-strength concrete had a lower drying shrinkage compared with moderate strength concrete. Subject recycled aggregatesconventional concretealkali-activated concretecompressive strengthdrying shrinkage To reference this document use: http://resolver.tudelft.nl/uuid:2ea2aebe-2ce9-4632-98d0-7260ae98b798 Publisher Delft University of Technology ISBN 978-94-6366-422-6 Source 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites: Microdurability 2020 Event 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites, 2021-04-29 → 2021-05-27, Online, Delft, Netherlands Part of collection Institutional Repository Document type conference paper Rights © 2021 H. Dong, X. Yao, S Burgmann, G. Ye Files PDF Drying_shrinkage_of_alkal ... egates.pdf 921.04 KB Close viewer /islandora/object/uuid:2ea2aebe-2ce9-4632-98d0-7260ae98b798/datastream/OBJ/view