Investigation of concrete workability through characterization of aggregate gradation in hardened concrete using X-ray computed tomography
| Autor: | Ghazal Sokhansefat, Marllon Daniel Cook, Masoud Moradian, M. Tyler Ley, Riyadh Alturki |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Aggregate (composite)
Materials science medicine.diagnostic_test 0211 other engineering and technologies Computed tomography 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology law.invention Characterization (materials science) Sieve law X ray computed 021105 building & construction medicine General Materials Science Gradation Tomography Composite material 0210 nano-technology |
| Zdroj: | Cement and Concrete Composites. 98:150-161 |
| ISSN: | 0958-9465 |
| DOI: | 10.1016/j.cemconcomp.2019.02.008 |
| Popis: | Concrete mixtures with different aggregate gradations and workability were prepared and X-ray computed tomography (XCT) is used to study the aggregate packing in hardened concrete. The workability of the mixtures was measured and then the aggregate spacing and distribution in the hardened concrete were investigated with an XCT scan of 40 μm resolution. The workability measurements showed segregation or poor workability in the mixtures with more than 20% of the coarse aggregates retained on a single sieve. In addition, in these mixtures, it was observed that ≈75% of the aggregates have a spacing |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect