Characterization of concrete containing RCA and GGBFS: Mechanical, microstructural and environmental properties
| Autor: | Amirhosein Sahraei Moghadam, Saeideh Moazami Goodarzi, Fereydoon Omidinasab |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Absorption of water
Aggregate (composite) Materials science 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction 0201 civil engineering law.invention Portland cement Compressive strength Flexural strength Volume (thermodynamics) Ground granulated blast-furnace slag law 021105 building & construction Ultimate tensile strength General Materials Science Composite material Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 289:123134 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2021.123134 |
| Popis: | This study presents the results of an experimental/analytical investigation on the development of eco-efficient concrete. In this study, natural aggregates (NA) were replaced by recycled concrete aggregate (RCA) with amounts of 0, 25, 50, 75, and 100% by volume. In addition, ordinary Portland cement (OPC) was replaced with ground granulated blast furnace slag (GGBFS) with amounts of 0, 15, 30, and 45% by volume. Workability and the hardened state properties such as the ultrasonic pulse velocity, the water absorption, the compressive strength, the splitting tensile strength, the flexural strength, and the impact resistance of twenty mixtures were assessed. This study also includes global warming potential (GWP) assessment. The results show that the use of RCA and GGBFS had a negative effect on workability, compressive strength and impact resistance and positive effect on GWP. Finally, given the results of the optimization, the use of RCA up to 50 vol% and the use of GGBFS up to 30 vol% is recommended. |
| Databáze: | OpenAIRE |
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