Tensile response of UHPFRC under very low strain rates and low temperatures
| Autor: | Mohamed Abdul Hafiz, Emmanuel Denarié |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Silica fume GIS_publi 0211 other engineering and technologies 02 engineering and technology Acoustic emission SH-UHPFRC Very low strain rates 021105 building & construction Ultimate tensile strength General Materials Science Tensile response Composite material Elastic modulus Curing (chemistry) Cement Viscosity Temperature Building and Construction Strain hardening exponent Elastic limit 021001 nanoscience & nanotechnology SCM 0210 nano-technology |
| Zdroj: | Cement and Concrete Research. 133:106067 |
| ISSN: | 0008-8846 |
| DOI: | 10.1016/j.cemconres.2020.106067 |
| Popis: | This paper addresses the uniaxial tensile response of Strain Hardening Ultra High-Performance Fiber Reinforced Concretes (SH-UHPFRC) subjected to very low strain rates and low temperatures. The influence of four different strain rates; 1 × 10−5, 1 × 10−7, 1 × 10−8 and 5 × 10−9 1/s on the tensile properties like elastic limit, elastic modulus, tensile strength and the strain at tensile strength, was studied for two types of SH-UHPFRC mixes; Mix I with type I cement and silica fume, and Mix II with silica fume and 50% mass replacement of type I cement with limestone filler, at three curing temperatures; 20 °C, 10 °C and 5 °C. The tests at strain rates lesser than 1 × 10−6 1/s are the first of their kind for UHPFRC materials and the results show a considerable impact on the elastic limit of the mixes. Acoustic Emission tests were also carried out for validation of test results of the elastic limit. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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