Simulation of Mechanical Properties of Light-Burned Magnesium Oxide-Containing Concrete for Historical Dam Temperatures
| Autor: | Qi Jun Yu, Zhao Heng Li, Yong Min Yang, Tong Sheng Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Magnesium Mechanical Engineering 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Tensile strain 021001 nanoscience & nanotechnology Compressive strength chemistry Mechanics of Materials 021105 building & construction General Materials Science Composite material 0210 nano-technology Elastic modulus Curing (chemistry) |
| Zdroj: | Key Engineering Materials. 744:45-54 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.744.45 |
| Popis: | Previous studies showed that curing regime has a significant influence on mechanical properties of light-burned magnesium oxide (MgO) concrete. However, research has been limited mostly to constant-temperature studies, whereas dams manufactured from concrete exist in variable-temperature environments. In order to achieve material performance parameters that agree more closely with engineering practice, the development of mechanical properties of light-burned MgO concrete curing at constant temperature and simulated dam body temperature was studied. The compressive strength, elastic modulus and ultimate tensile strain of light-burned MgO concrete increased with the increase of curing temperature, MgO content and curing age. These constant-temperature properties were similar to those under simulated dam body temperature curing conditions. A comparison of experimental results of simulated dam body temperature curing and constant temperature curing showed that a thermostatic curing system was suitable for calculating the laws of mechanics development for dam concrete. |
| Databáze: | OpenAIRE |
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