Experimental Investigation on the Freeze–Thaw Resistance of Steel Fibers Reinforced Rubber Concrete
| Autor: | Yuan Xiaosa, Xinchao Zheng, Ji Yanjun, Chi Zhang, Luo Tao, Sun Chaowei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
0211 other engineering and technologies Reinforced rubber 02 engineering and technology freeze–thaw cycles lcsh:Technology Article Flexural strength Natural rubber ICT scanning 021105 building & construction Freeze thaw resistance General Materials Science Fiber Composite material lcsh:Microscopy lcsh:QC120-168.85 rubber concrete lcsh:QH201-278.5 lcsh:T fungi technology industry and agriculture 021001 nanoscience & nanotechnology Microstructure compressive strength four-point bending strength Durability Compressive strength lcsh:TA1-2040 steel fiber visual_art visual_art.visual_art_medium lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 |
| Zdroj: | Materials Volume 13 Issue 5 Materials, Vol 13, Iss 5, p 1260 (2020) |
| ISSN: | 1996-1944 |
| Popis: | The reuse of rubber in concrete results in two major opposing effects: an enhancement in durability and a reduction in mechanical strength. In order to strengthen the mechanical properties of rubber concrete, steel fibers were added in this research. The compressive strength, the four-point bending strength, the mass loss rate, and the relative dynamic elastic modulus of steel fiber reinforced rubber concrete, subjected to cyclic freezing and thawing, were tested. The effects of the content of steel fibers on the freeze&ndash thaw resistance are discussed. The microstructure damage was captured and analyzed by Industrial Computed Tomography (ICT) scanning. Results show that the addition of 2.0% steel fibers can increase the compressive strength of rubber concrete by 26.6% if there is no freeze&ndash thaw effect, but the strengthening effect disappears when subjected to cyclic freeze&ndash thaw. The enhancement of steel fibers on the four-point bending strength is effective under cyclic freeze&ndash thaw. The effect of steel fibers is positive on the mass loss rate but negative on the relative dynamic elastic modulus. |
| Databáze: | OpenAIRE |
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