Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 167, Issue -, Pages 271-285Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.02.035
Keywords
Combined industrial solid wastes; Artificial aggregate; Pelletization; Self-compacting concrete; Durability; Environmental impact
Categories
Funding
- China Scholarship Council (China)
- Department of the Built Environment, Eindhoven University of Technology (the Netherlands)
- Attero
- Smals
- Building Materials research group at TU Eindhoven: Rijkswaterstaat Grote Projecten en Onderhoud
- Graniet-import Benelux
- Kijlstra Betonmortel
- Struyk Verwo
- ENCI HeidelbergCement
- Rijkswaterstaat Zee en Delta-District Noord
- Van Gansewinkel Minerals
- BTE
- V.d. Bosch Beton
- Selor
- GMB
- Icopal
- BN International
- Eltomation
- Knauf Gips
- Hess MC Systems
- Kronos
- Joma
- CRH Europe Sustainable Concrete Centre
- Cement Beton Centrum
- Heros
- Inashco
- Keim
- Sirius International
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Several industrial solid wastes are integrally recycled to produce cold bonded artificial aggregates (CBLA) using the pelletizing technique, and incineration bottom ash fines (BAF, 0-2 mm) are innovatively used to strengthen the pellet strength. Three types of CBLAs are produced, in which BAF, nano-silica produced by olivine dissolution and polypropylene fibre are applied to improve the aggregates' properties (strength, etc.), respectively. The influence of these different types of CBLAs on the designed self-compacting concretes (SCCs) are experimental study and compared. The fresh and hardened properties of the concrete with and without CBLAs are investigated, including slump flow diameter, t(500) time, V-funnel time, bulk density, flexural and compressive strength, etc. Moreover, the durability of the concretes is studied through water penetration and freeze-thaw tests. Additionally, the leaching behaviour of heavy metals and salts from the concretes are evaluated through different leaching tests according to environmental legislation. The results show that the roundish particle shape of CBLAs benefit the flow of concrete in fresh stage, and the strength of concrete with CBLAs has linear relation with its bulk density, and the cumulative mass loss profiles during freeze-thaw tests were influenced by the types of CBLAs. The leaching tests show that the concretes containing CBLAs are environmental non-hazardous. (C) 2018 Elsevier Ltd. All rights reserved.
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