【正文】
Vertical cracks in cement concrete pavement may be the deal with all of local processing and handling methods. Before processing, the cracks must be generated to investigate the cause analysis, to determine what causes and then determine what approach to use. All processing This approach is to crack the concrete slab has been cleared of all to retain the horizontal connecting bars. If there is damage to the grassroots level appropriate to deal with, and then repoured with the original surface of the concrete slab, such as strength. If that is the basis of cracking due to the road surface caused by cracking, it should be in the new fullcast concrete slab added to a wide range of singlelayer or doublereinforced, reinforced the general specifications of the steel used Φ10 made to 20 * 20cm spacing . This method is suitable for a variety of reasons arising from the road surface cracking. The use of this approach, the cost of the larger. Partial treatment Local processing is in the cracks on both sides of the range of not less than 50cm cutting a groove, deep groove thickness of ~ times the slot on both sides must be neat, should be cut cutting machine. Clean bottom, laying in the bottom Φ10mm reinforced with banding of 10 * 10cm steel net, and then poured with the same intensity of the original concrete pavement pebbles concrete, moisture transport 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 v