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Experimental device for the durability of coastal reinforced concrete under the alternating action of dryness and wetness

A reinforced concrete, alternating wet and dry technology, applied to measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., to achieve the effect of ensuring stability

Active Publication Date: 2017-07-07
JIANGSU WATER CONSERVANCY SCI RES INST
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  • Description
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Problems solved by technology

This device is mainly used for sewage treatment, and the adjustable height of the water level is fixed by the installation position of the floating ball, so it is not suitable as a test device for the durability of coastal reinforced concrete under the alternating action of dry and wet

Method used

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  • Experimental device for the durability of coastal reinforced concrete under the alternating action of dryness and wetness
  • Experimental device for the durability of coastal reinforced concrete under the alternating action of dryness and wetness
  • Experimental device for the durability of coastal reinforced concrete under the alternating action of dryness and wetness

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Embodiment Construction

[0031] Such as figure 1 , figure 2 , image 3 , showing the tidal process measured by Lianyungang, Sheyang Estuary and Tianshenggang respectively. It is uneconomical and inconvenient to use such a huge water tank to simulate the tidal range under natural conditions. Based on the above factors, the design invention adopts the methods of multi-pump proportional control, steady-state regulation, and counterweight pressurization. The following is a detailed introduction of the test device.

[0032] Such as Figure 5 , Image 6 , the present invention adopts the method of multi-pump proportional control, steady-state adjustment, and counterweight pressurization to realize the steady rise or fall of the water body of the tank, and to simplify and simulate the average water pressure under a certain tidal range by pressurizing the water body of the tank . To achieve the above object, the invention mainly includes a main water tank, an auxiliary water tank, a water pump, a porou...

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Abstract

The invention provides a test device for the durability influence of coastal reinforced concrete under the alternating action of dryness and wetness. , the water outlet is set at the bottom of the water tank, the porous partition is set at the lower part of the main water tank, and the test piece is placed on it; the floating box is set at the upper mouth of the main water tank, and the counterweight is set on the floating box; the water level control system includes pressure sensors and PLC controller, the pressure sensor is set at the bottom of the main water tank and connected to the PLC controller, and the control terminals of each water pump are connected to the PLC controller. The process has important experimental reference value for the study of the erosion process of reinforced concrete by the tidal process in the natural state, as well as its protection and the development of concrete used in coastal areas.

Description

technical field [0001] The invention relates to a concrete durability test device technology under different states, in particular to a test device for the durability influence of coastal reinforced concrete under the alternating action of dryness and wetness. Background technique [0002] Concrete is a kind of porous medium. In coastal dry-wet areas, ions that endanger the durability of concrete in water also enter the interior of concrete with water, such as sulfate ions and chloride ions. Among them, the sulfate ion reacts with the hydration product of cement, causing the volume of the hydration product to expand, causing damage to the interior of the concrete, and even cracking; the chloride ion penetrates into the reinforced steel bars inside the concrete, and utilizes the solubility of ferrous salts in the concrete. Corrosion pits are formed on the surface of the steel bar, which consumes hydroxide ions, causing the pH value of the local pore fluid of the corrosion poi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
Inventor 杨星李志清王蔚胡晓东吴沛沛吴苏舒郭刘超翁松干
Owner JIANGSU WATER CONSERVANCY SCI RES INST
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