公司新闻
沥青料路面纵向接缝不良的问题预防
来源：/ 日期：2023-06-26
沥青料路面接缝不良，会导致两侧标高不一，路面倾斜，在行车作用Ｆ，易发生颠簸或造成沥青料松散。如伴随压实不足，在重交通作用下，易造成接缝处表层过度磨损，且不良的接缝易透水，水分经接缝下渗，这会给路基、路面造成更大的破坏。
Poor joints in asphalt pavement can lead to uneven elevations on both sides, tilting of the road surface, and easy bumping or loosening of the asphalt material during driving. If accompanied by insufficient compaction, under the action of heavy traffic, it is easy to cause excessive wear on the surface of the joint, and poor joints are prone to water permeability. Water seeps through the joints, which will cause greater damage to the roadbed and road surface.
济南沥青料路面纵向接缝不良，易导致新旧摊铺车道标高不易或接缝处混合料松散。
Poor longitudinal joints in Jinan asphalt pavement can easily lead to poor elevation of new and old paving lanes or loose mixture at the joints.
１、造成纵缝不良的基本原因
1. The basic reasons for poor longitudinal joints
（１）冷接缝施Ｔ工艺不规范：半幅施工不能采用热接缝时易架设挡板或采用切片切齐。铺另半幅前必须将缝边缘清扫干净，并涂抹少量粘层沥青。摊铺时应重叠在铺层上５～ｌＯｃｍ，摊铺后用人下将摊铺在前半幅上面的混合料铲走，然后再进行碾压，应注意新摊铺带必须和前一条摊铺带松铺厚度相同；否则，易造成新旧摊铺车道不正确的重叠，重叠太多发生隆起，重叠太少就会低于先摊铺的面层的标高；
(1) The cold joint construction process is not standardized: when half width construction cannot use hot joints, it is easy to install baffles or use slicing to cut evenly. Before laying the other half, the edge of the joint must be cleaned and a small amount of adhesive layer asphalt must be applied. When paving, it should overlap the paving layer by 5-lOcm. After paving, the mixture spread on the first half of the road should be removed by a person, and then compacted. It should be noted that the new paving strip must have the same loose paving thickness as the previous one; Otherwise, it is easy to cause incorrect overlap between the new and old paving lanes. If there is too much overlap, it will cause uplift, and if there is too little overlap, it will be lower than the elevation of the first paving surface layer;
（２）热接缝施Ｔ工艺不规范：热接缝施丁一般是在使用两台以上摊铺机前后错开１０—２０米成梯队作业。此时两条比邻摊铺带的混合料还处于乐实前的热状态，所以纵向接缝易于处理，且连接强度较好。施ＬＴ时应将以摊铺的混合料部分留下１０～２０ｃｍ宽，暂不碾压，作为后摊铺部分的高层基准面，待后摊铺部分完成后。一起碾压（跨缝碾压）；否则压实设备在接缝冷的一侧压槎太多，或是碾压时沥青混合料温度不够，这造成接缝处碾压不实；
(2) The hot joint construction process is not standardized: Hot joint construction is generally carried out in a staggered manner of 10-20 meters before and after using two or more pavers. At this point, the mixture of the two adjacent paving belts is still in the hot state before Le Shi, so the longitudinal joint is easy to handle and the connection strength is good. When applying LT, the mixture to be spread should be left with a width of 10-20cm and not compacted temporarily. It should be used as the high-level reference plane for the later spreading part, and after the latter spreading part is completed. Rolling together (cross joint rolling); Otherwise, the compaction equipment will press too many joints on the cold side of the joint, or the temperature of the asphalt mixture will not be enough during compaction, which will cause incomplete compaction at the joint;
（３）冷、热接缝施－Ｔ项目部技术交底不或没有针对性，施工人员技术不熟练，如耙平施工方式不对，造成纵缝不是隆起，就是沟槽或倾斜；此外，不良的纵缝的形成与摊铺机机架人员的操作水平及摊铺机工作性能有关，如进口非接触式找平系统的摊铺机比滑靴和走钢丝绳的平整度要好，还与熨平板前方推带的混合料重量的变化，进料器或或螺旋摊铺器是否超载等有关。
(3) Cold and hot joint construction - The technical disclosure of the T project department is not comprehensive or targeted, and the construction personnel are not proficient in technology. If the raking construction method is not correct, the longitudinal joint is either raised, grooved or inclined; In addition, the formation of poor longitudinal joints is related to the operational level of the paver frame personnel and the working performance of the paver. For example, the flatness of the imported non-contact leveling system paver is better than that of the sliding shoe and steel wire rope, and it is also related to changes in the weight of the mixture pushed in front of the iron plate, whether the feeder or spiral paver is overloaded, and so on.
２、预防措施
2. Preventive measures
严禁使用不带平衡梁或没有声纳控制的摊铺机摊铺，必须使用性能良好进口摊铺机摊铺；严格控制底基层和基层标高、横坡度、平整度等指标，其合格率不低于９５％。
It is strictly prohibited to use pavers without balance beams or sonar control for paving, and imported pavers with good performance must be used for paving; Strictly control the elevation, cross slope, flatness and other indicators of the subbase and base layer, with a qualification rate of no less than 95%.
That's all for the prevention of poor longitudinal joints in asphalt pavement. We hope it can be helpful to you. For more information, please visit our website consulting service
公司地址：济南市商河县贾庄镇民营经济创业园
公司名称:2023澳门正版资料免费 
备案号：