Experimental device for the corrosion effect of gypsum rock on concrete under the action of multiple factors
A test device, multi-factor technology, applied in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of single index, no consideration of corrosion effect, no consideration of the influence of water pressure corrosion effect, etc., to achieve simple Effects of Considerations
Active Publication Date: 2017-03-29
中电建路桥集团有限公司 +1
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Problems solved by technology
(2) The experimental research considers the effect of a single factor such as temperature, ion concentration, and concrete strength, and does not consider the corrosion effect of multiple factors.
(3) The indicators used to evaluate the corrosion effect are single, and most of them are qualitative descriptions
(4) The model test is relatively simple and cannot be combined with engineering practice, and the influence of water pressure on corrosion effect is not considered
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Such as figure 1 As shown, the test device for the corrosion effect of gypsum rock on concrete under the action of multiple factors includes a base 1, a sealing ring 2, a compression ring 3, a nut cap 4, a constant temperature water bath 8 and a nitrogen cylinder 9.
[0025] The structure of the base is as figure 2 As shown, the middle part of the base 1 is provided with a test piece installation cavity 10 with an open upper end in the vertical direction. The test piece installation cavity 10 is composed of two upper and lower holes, and the diameter of the upper hole is greater than that of the lower hole. A conical step is formed at the connecting portion of the hole and the small-diameter hole, the hole wall of the large-diameter hole is provided with an internal thread, and the outer circle top of the base 1 is provided ...
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The invention discloses a device for testing the corrosion effect of gyprock on concrete under multi-factor action. The device comprises a base, a sealing ring, a compression ring, a nut cap, a constant-temperature bath tank and a nitrogen cylinder; a test piece mounting cavity is formed in the middle of the base in the vertical direction, a water outlet is formed in the bottom of the base, and the constant-temperature bath tank is arranged along the periphery of the base; the sealing ring is clamped in a conical step of the test piece mounting cavity, and the compression ring is screwed in an upper hole in the test piece mounting cavity and compresses the sealing ring; the nut cap is screwed at the top of the base, and a circular cavity is formed between the top end of the base and the inner top of the nut cap; a gas inlet is formed in the top of the nut cap, and the nitrogen cylinder is connected with the gas inlet through a pipeline. The device can do research on the corrosion effect under the common action of multiple factors including concentrate strength, concrete impervious grade, C3A content, water pressure, time and sulfate concentration; the testing device is simple, the consideration factors are complete, and the testing device has guidance meaning on the on-site construction.
Description
technical field [0001] The invention relates to a test device for the corrosion effect of gypsum rock on concrete, in particular to a test device for the corrosion effect of gypsum rock on concrete under the action of multiple factors. Background technique [0002] In recent years, with the gradual expansion of the scale of my country's transportation infrastructure construction and the rapid development of highway construction, the proportion of tunnel mileage to the total mileage of routes is also increasing. In recent years, expressway construction in Chongqing has developed rapidly. By the end of 2009, the mileage of expressways opened to traffic exceeded 1,500 kilometers. Because it is located in the southwest mountainous area, the proportion of expressway tunnels in Chongqing is larger, and many tunnels pass through gypsum rock formations. [0003] Gypsum rock is highly corrosive to tunnel concrete. The calcium sulfate solution dissolved in the gypsum rock has a physi...
Claims
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IPC IPC(8): G01N17/00
Inventor 蒲文明沈亮成子桥陈钒潘家奇韩大勇王红娟任松吴建勋赵杰清
Owner 中电建路桥集团有限公司