Device for measuring concrete surface stripping degree

Abstract

The invention discloses a device for measuring the concrete surface stripping degree. The device comprises a cuboid frame with the open lower end, a T-shaped rack arranged on a frame beam arranged at the upper portion of the frame and a group of opposite edges perpendicular to the frame beam, wherein the lower end of the T-shaped rack extends into the frame and connected with a probe rack and a connecting rod through rotary shafts, the other end of the probe rack is provided with a vertically downward probe, and the other end of the connecting rod is connected with a recording plate. The device is small in size, convenient to move and carry and simple in operation and enables a test result to be easily observed. The roughness of the test part surface can be directly reflected through mechanical transmission of parts, middle measurement errors are decreased, and the test result obtaining speed is accelerated. The accuracy of the device can reach to 0.01mm, and accurate data are provided for follow-up determination of a concrete surface roughness value, confirmation of actual protection layer thickness of degraded concrete, a weakest degradation point and further calculation of chloride ion penetration depth.

Description

technical field [0001] The invention relates to a device for concrete engineering and testing, in particular to a device for measuring the spalling degree of the concrete surface. Background technique [0002] Concrete is one of the most important civil engineering materials today. Because of its rich raw materials, low price and simple production process, the consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. These characteristics make it widely used, not only in various civil engineering, but also as an important material in shipbuilding, machinery industry, ocean development, geothermal engineering, etc. With the continuous development of concrete in the industry, the evaluation results of various performance indicators of concrete need to be more accurate, and the corresponding evaluation methods need to be more scientific. [0003] In my country, in ord...

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Problems solved by technology

Due to multiple unstable factors such as different thawing time, different water loss speed, and different air temperature and humidity during the test, this method will cause large deviations in the test results and reduce the accuracy of the test results.

[0005] In addition, this method can only evaluate the average degree of peeling of the concrete surface, but in fact, the degree of peeling of the concrete surface is different, and the places with severe peeling will be more likely to be corroded and peeled more seriously under the same test conditions.

This method cannot fully and truly evaluate the spalling of each point on the concrete surface, and cannot provide accurate data for the subsequent determination of the actual protective layer thickness of the deteriorated concrete and the weakest point of deterioration, as well as further calculation of the chloride ion penetration depth, which greatly reduces the significance of practical application

The equipment to realize this evaluation method is a single-sided freeze-thaw test chamber, which is bulky, inconvenient to carry, and expensive to manufacture. It requires harsh test conditions when used, and the test time is long and the operation is complicated.

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