ä½°ç‘žæ³°å…‹æ¡¥é¢ waterproof shot blasting machine helps build Jiujiang Yangtze River Bridge Qilihu Bridge
On October 19th, 2012, two brand-new Furui Tektronix BLASTRAC 2-20DT shot blasting machines were carried out on Jiujiang Qilihu Bridge, a bridge with a length of 3 kilometers and a two-way six-lane total width of 30 meters. Pretreatment of the bridge deck before waterproof construction. The shot blasting treatment of the bridge deck can ensure the bonding strength between the waterproof material and the bridge deck is strengthened. After the actual measurement, the drawing strength of the water-blasting layer is 3MPA, which far exceeds the required 1MPA requirement, which guarantees Construction Quality.
Waterproof shot blasting construction site of Qiaojiang Taiji Jiujiang Yangtze River Bridge
In the construction of the deck concrete cement pavement layer, due to the process of vibrating and picking up the slurry and the process of slurrying and lapping, a thick and uneven thick layer of cement mortar floating pulp layer or pulp strip is formed on the surface of the cement concrete. It is usually low in strength. Moreover, due to the influence of the wild environment of the bridge, during the hydration reaction of cement concrete, a large amount of scattered dust will cause different degrees of pollution on the surface of the cement concrete, thus affecting the interlayer bonding of the pavement layer. The weak floating layer will directly affect the adhesion of the bridge deck concrete slab to the subsequent deck waterproof layer or the modified emulsified asphalt binder layer. The contaminated surface will also block the adhesion between the layers, thus affecting the overall bond. effect. The roughness of the interlayer contact surface has a direct influence on the sliding stability between the layers. The roughness of the larger structural depth is beneficial to enhance the shear resistance between the layers and is a key factor affecting the pavement performance of the bridge deck.
ä½°ç‘žæ³°å…‹ Shot blasting machine at the construction site of the Jiujiang Yangtze River Second Bridge
At present, there is no clear regulation on the structural depth of the composite cement concrete pavement layer of the highway bridge deck, which results in different handling of the cement concrete surface of the bridge deck. Bridge deck concrete slabs with shallower roughness are disadvantageous for interlayer sliding stability.
In China, the shot blasting process has been widely used in steel bridge construction. Because the shot blasting process has the ability to remove the floating layer and impurities of the cement concrete surface at one time, and at the same time, the surface of the cement concrete can be roughened to form a uniform and rough surface, and the waterproof layer or the bonding layer of the bridge surface and the cement concrete base surface are greatly improved. The characteristics of the bonding force, the shot blasting process has attracted more and more attention from engineers and technicians, and it has begun to be applied in the treatment of cement concrete bridge decks. For the bridge deck with deeper degree of plucking, shot blasting is used to remove the floating layer of cement concrete surface to the greatest extent, and the main purpose of exposing the solid cement concrete base is to increase the microscopic structure while maintaining its original macroscopic structural depth. Depth, the effect of cleaning the bridge deck is extremely obvious. And the shot blasting treatment of the bridge surface float is highly efficient, the work site is free of pollution, and the cleaned bridge deck does not require additional cleaning work.
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Established in 1996, YangZhong HuaXin Power Equipment Co., LTD is a professional manufacturer and exporter that is concerned with the design, development and production of power equipment .We are located in Yangzhong city, Jiangsu province, with convenient transportation access.
We specialize in Cable Tray , high-low voltage bus ways, bus switch cabinet, conduct bar, pine line armature, integrated wiring and so on. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.
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