For concrete dams during operation, the moisture content of the concrete near the water level changes periodically due to the influence of water level fluctuations. When the water level drops, it will naturally lose water from saturation to dryness, and can also become saturated again due to capillary water absorption and water pressure infiltration after the water level rises. Repeated stress increases can cause damage to the concrete, and the combined effects of temperature stress and self weight may lead to cracking problems. The underwater part of the upstream surface gradually saturates under high water head, and the properties of saturated and saturated concrete may differ from those of general concrete. Experiments have been conducted to address the above issues. This dataset contains experimental research data on key parameters under the action of concrete infiltration pressure. The dataset contains an xlsx file, where the first column is the serial number, the second column is the date, the third column is the strain (μ ε), and the fourth column is the water pressure (MPa).
The cement used in the experiment is 42.5 ordinary Portland cement (P · MH 42.5), grade II fly ash, and two types of aggregates, granodiorite and granulite. Adopting independently developed experimental equipment, consisting of anti-seepage and water-resistant devices, loading and unloading equipment, measurement and collection equipment, etc. The pressurization equipment is a digital automatic pressure regulating plunger pump, responsible for accurately controlling the water pressure loading process of the test, with a confining pressure control accuracy of up to 0.01 MPa; The unloading device is a pressure relief valve that can quickly remove the pressure in the specimen and pressure vessel; The measuring equipment adopts an embedded vibrating wire strain gauge, which can simultaneously measure the temperature of the specimen; The acquisition device is an eight channel vibrating wire acquisition instrument, with input and output terminals connected to strain gauges and PC computers respectively; Epoxy resin and silicone rubber are used for anti-seepage, and high toughness thickened rubber balloons are used for waterproofing. Conduct experiments on the effects of confining pressure, wet expansion, and pore water pressure on the stress-strain of concrete.
The data is obtained from the deformation coefficient testing equipment of the concrete material under the action of seepage field in the Engineering Mechanics Test Hall of Yanqing Experimental Base of China Academy of Water Resources and Hydropower Sciences. There are no special site requirements during the testing process, and the data is collected through the temperature, displacement, and load sensors provided by the equipment.
The deformation coefficient testing equipment for concrete materials under the action of seepage field in the Engineering Mechanics Test Hall of Yanqing Experimental Base of China Academy of Water Resources and Hydropower Research has no special site requirements during the testing process, and is collected through the temperature, displacement, and load sensors provided by the equipment. The experimental results show that there is a good linear relationship between the deformation and pressure of different saturated concrete; The saturated modulus of concrete shows a significant increase compared to the unsaturated modulus, and under experimental conditions, the modulus growth even exceeds 20%.
| # | number | name | type |
| 1 | 2021YFC3090102 | National key R & D plan |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.NCDC.NHRI_DAM.DB6854.2025
10.12072/ncdc.nhri_dam.db6854.2025
