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The anticorrosion of concrete chimney is microcosmic, which is determined by its physical and mechanical properties

Hits: 4050 Release: 2016-11-18 source: Chimney construction, chimney demolition, chimney anticorrosion, chimney maintenance, chimney renovation, chimney beautification, chimney inner wall anticorrosion = = Hongshun Construction Engineering Co., Ltd

The corrosion prevention of concrete chimney is inevitable. Its micro corrosion protection is determined by its own physical and mechanical properties, but its harmful degree can be controlled, and the standard of harmful degree is determined according to the service conditions. At present, the regulations of various countries in the world are not completely consistent, but they are roughly the same. For example, from the requirements of structural durability, bearing capacity and normal use, the strictest allowable anti-corrosion width is 0.1 mm. In recent years, many countries have relaxed it to 0.2 mm based on a large number of tests and experience of pumping concrete chimneys. When the structure is in a normal environment, the thickness of the protective layer meets the design requirements, and there is no corrosive medium, the corrosion protection width of reinforced concrete can be relaxed to 0.4mm It is 0.3 mm in soil and 0.15 mm in seawater and dry wet alternation.
Cause analysis of concrete anti-corrosion before repairing anti-corrosion, it is necessary to comprehensively consider various influencing factors related to it, carefully study the causes of anti-corrosion, whether the anti-corrosion has been stable, and if it is still in the development process, it is necessary to estimate the final state of the anti-corrosion development. According to the investigation of corrosion resistance of reinforced concrete (with and without corrosion); the corrosion resistance of reinforced concrete (with and without corrosion); the corrosion resistance of reinforced concrete (with and without corrosion); the corrosion resistance of reinforced concrete (with and without corrosion); the corrosion resistance of reinforced concrete (with and without corrosion); the corrosion resistance of concrete (with and without corrosion); the corrosion resistance of concrete (with and without corrosion); with and without corrosion of concrete; with and without corrosion; with and without corrosion); with and without corrosion of concrete; with and without corrosion Analysis; load test; vibration test.
Anti corrosion treatment of concrete
It is no longer suitable for the application of anti-corrosion and anti-corrosion on the surface of the steel bar which is not covered with thin-layer anti-corrosion and anti-corrosion surface coating method, which is not applicable to the surface of the joint. The method of surface patching (geomembrane or other waterproof sheet) is suitable for seepage control and plugging of large area water leakage (honeycomb and pockmarked surface, or it is difficult to determine the specific leakage location and deformation joint)
The cost of direct filling is 3 mm. If the width is less than 0.3 mm and the depth is shallow, or there are filling materials in the anti-corrosion, it is difficult to achieve the effect by grouting method, and the simple treatment of small-scale anti-corrosion can adopt V-shaped groove, and then fill.
3. Grouting method can be used in a wide range of applications, from fine to large-scale anti-corrosion, and the treatment effect is good.
4. The structural reinforcement method can be adopted for the structural strength due to the anti-corrosion caused by overload, the decrease of concrete durability caused by long-term non-treatment, and the anti-corrosion caused by fire. Including section reinforcement method, anchorage reinforcement method, prestressed method and other concrete anti-corrosion treatment effect inspection, including repair material test, core sampling test, water pressure test, air pressure test, etc.

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