Concrete Coupling Test Device for Load Temperature Osmotic Pressure
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Solution Overview
Problem
Current devices are inadequate in simulating the coupling effect of osmotic pressure and load on concrete, which is crucial for assessing its durability in complex engineering environments, particularly in underground and underwater structures.
Innovation Solution
A test device incorporating a loading system and a water pressurization system, integrated with a high-low temperature alternating damp heat test chamber, applies a controlled load and osmotic pressure to a test block while simulating various temperature conditions, ensuring hermetic sealing and high leakproofness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current devices are used to test concrete transmission performance, then testing under separate effects (osmotic pressure or load alone) is achievable, but testing under coupling effect of osmotic pressure and load cannot be achieved
Solution Approach 1:
The patent combines the loading device and water pressurization device into a single integrated test system. The loading device applies mechanical load to the concrete specimen through steel plates, while the water pressurization device simultaneously applies osmotic pressure through liquid storage tanks connected to the specimen. This merging of two separate testing functions into one unified device enables the coupling effect testing that was previously impossible with separate devices.
Solution Approach 2:
The test device is designed with multi-functionality to achieve separate effects testing (osmotic pressure alone, load alone) and coupling effect testing (osmotic pressure + load combined). The loading device with adjustable steel plates and the water pressurization device with controllable liquid pressure work together to provide versatile testing capabilities. The device can be configured to apply different combinations of loads and pressures, making it universally applicable for various concrete durability testing scenarios.
2Reliability
If liquid storage tank is hermetically connected to test block side surface, then sealing integrity is improved, but device complexity increases
Solution Approach 1:
The liquid storage tank is pre-equipped with a tank port that is hermetically connected to the side surface of the test block before the test begins. This preliminary hermetic connection ensures that the sealing interface is established in advance, preventing any potential leakage issues during the test. The connection is designed to maintain sealing integrity throughout the test duration by pre-positioning the sealing elements and ensuring proper alignment between the tank port and the test block side surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively simulates the coupling effects of load, temperature, and osmotic pressure, providing a robust tool for studying concrete durability under severe conditions, with demonstrated effectiveness in maintaining pressure and sealing integrity over extended periods.
Implementation Method 1
a water pressure is applied to the test block through the pressurization pump
Implementation Method 2
the press transmits a force to the test block via the steel plates and a spring/disc spring
Implementation Method 3
a temperature is controlled by the test chamber
Data Source
AI summary
The present disclosure discloses a medium transmission test device and a method for concrete under a temperature-osmotic pressure-load coupling effect. The device includes a loading device and a water pressurization device; the loading device includes a press, an upper steel plate and a lower steel plate used for clamping a test block, and a fastener that connects the upper and lower steel plates; the upper steel plate includes a first steel plate and a second steel plate; a spring is sleeved on a screw between the first steel plate and the second steel plate; the water pressurization device includes a liquid storage tank, a pressurization pump, a liquid storage pool, a connecting pipe for communicating the pressurization pump to the liquid storage tank, and a connecting pipe for connecting the pressurization pump to the liquid storage pool; the liquid storage tank is provided with an open end; and a tank port of the open end is fixedly connected to a side surface of the test block. The present disclosure achieves a load-temperature-osmotic pressure coupling effect on concrete, can well simulate a complicated severe environment where underground concrete is located, and provides an effective device support for the study of the durability of concrete under complicated severe conditions.