Deterioration mechanism of interface transition zone of concrete pavement under fatigue load and freeze-thaw coupling in cold climatic areas
| Autor: | Shengbo Zhou, Xiaolong Yang, He Tianqin, Yinchuan Guo, Aiqin Shen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
0211 other engineering and technologies Nucleation 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology Deterioration rate Permeability (earth sciences) Coupling effect Dynamic loading 021105 building & construction Transition zone Coupling (piping) General Materials Science Geotechnical engineering Composite material 0210 nano-technology Cycling Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 160:588-597 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2017.11.031 |
| Popis: | In addition to stresses from dynamic loading, concrete pavements in cold climatic areas are often attacked by freeze-thaw cycling. The interface transition zone (ITZ) is the first section to deteriorate. To study the micro-structure changes of ITZ under the coupling function of fatigue load and freeze-thaw cycling, an indoor-accelerated coupling test was designed. The results show that the coupling effect accelerates the deterioration rate and increases the complexity of micro-crack structures with more pores including crack nucleation. Moreover, the coupling effect significantly reduces impermeability. DOD is the main factor that accelerates the speed of permeability attenuation of concrete. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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