the concrete hardens
Posted: Fri Sep 15, 2017 7:10 am<p>After the concrete hardens, the high strength wire rope will be tightened at both ends of the jack, against the concrete. When the wire rope is in a pull state, according to the specification, it will be embedded in the same place and maintain the tension. When the jack is removed, the pressure into the concrete, the pipe will be poured into the cement slurry to protect the cable from erosion. This method is usually used to make huge slate, to avoid the house cover in the expansion of the soil caused by the destruction of the foundation. </p><p>All the soil from the seasonal expansion of the contraction of the pressure, are absorbed by the stone version of the pull. So the house can avoid bending away from the bend. After the Zhang method is also used in the construction of the bridge, prefabricated bridge beam, and then a section of the stitch together.</p><p> The advantages of using this method are: to reduce the demand for traditional reinforced concrete, because the prestressed steel can not accidentally stress. The cable can be easily "woven" in the build, so it can improve design efficiency. Due to the combination of steel and concrete, making the strength of the components higher. Do not use long-term fixed anchor. No grip after the Rafa is different from the grip after the Rafa is in the former without fixed steel in the concrete.</p><p> To achieve this level, must be applied to oil and extrusion molding process with a plastic die. The tension of the transmission process is the use of steel fixed anchor fixed in the surrounding stone version. The main drawback is that the cable will burst from the slate when the stone version of the injury. There are several advantages: when the harsh environment can easily adjust the cable ◦ grouting procedures can be removed ◦ can have the ability to decompress when the implementation of the repair work .</p>