外文翻譯---淺談水泥混凝土路面縱向裂縫的防治(文件)
【正文】 and opening up health after 28 days. This method is relatively simple to deal with the economy, but only applies to the road as a result of their own strength and have a crack.。 and then manually drag the horizontal vibration plate vibration device, and finally by the artificial drag of the surface vibration of beam vibration. Interpolation points with rods vibrated vibrated and tabletstyle device vibration vibration, vibration and the vibration of the point of time solely by the people to control the external environment during the construction and manmade factors such as operator under the influence, it is difficult to do points to even moderate vibration time. In this way, the cement concrete slab can not be too dense to even. As we all know, the degree of paction of concrete directly affects its strength. Repeated in the role of traffic load, the concrete slab does not crack the firstpacting Department. Once the cracks appeared in the cracks occur at the two ends of the phenomenon of stress concentration, so the cracks quickly extended to the ends of the extension at the same time, gradually increasing. Eventually lead to broken concrete slabs. 3 Vertical cracks in the preventive measures Cement concrete pavement must be the prevention of vertical cracks started from the root. Front of the concrete pavement has been the main reason for cracks is analyzed, then the prevention of the occurrence of cracks on the need to take effective measures for its. The basic strength and the overall (1) Fill Embankment Construction of the embankment fill, it is important to the design requirements in accordance with norms and hierarchical placement, hierarchical RCC, degree of paction must meet the design requirements. In addition Subgrade must be fullfilling should not be at the construction site, the work of artificial joints caused by the vertical plane formed by the weak. (2) Zerofill and cut sections Zero filling and excavation of the foundation treatment section, if the scope of the road and the road trough trough following is a general soil or loose soil, the deal with the depth of groove should not be limited to the road, the road for the next slot (the way trough the top of the scope of the following 30 ~ 80cm ) also have to deal with, and its degree of paction and the road should be the same slot. For special emphasis on road transport, the depth of processing should also be deepened. (3) A halfdug halffilled sections A halfdug halffilled and the old roadbed construction of the road widening, should be seriously dealt with the heart filled with the old part of the slope of the road
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