Simulation of Mechanical Properties of Light-Burned Magnesium Oxide-Containing Concrete for Historical Dam Temperatures

Abstract:

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.

• Periodical: Key Engineering Materials (Volume 744)
• Pages: 45-54
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.744.45
• Online since: July 2017
• Authors: Yong Min Yang*, Zhao Heng Li, Tong Sheng Zhang, Qi Jun Yu
• Keywords: Constant Temperature, Curing Regime, Magnesium Oxide Concrete, Mechanical Properties, Variable Temperature

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