After spreading the permeable layer, adhesive layer, and laying the lower sealing layer according to regulations on the qualified base layer, the mixture can be spread. Firstly, carry out construction layout. Accurate construction layout should avoid the heavy impact of the benchmark steel line, and the longitudinal spacing of the steel pillars should not be too large, usually 5-10 meters, and should be tightened with a wire tensioner. At the same time, it is necessary to strengthen monitoring to prevent on-site personnel from disturbing and causing fluctuations in the paving surface. Before paving, it is necessary to conduct timely inspections of indicators such as columns, cross slope, and thickness, and promptly handle any problems found.

攤鋪機(jī)攤鋪速度勻速行使不間斷，借以減少波浪和施工縫，試驗(yàn)人員隨時(shí)檢測(cè)成品料的配比和瀝青含量，及時(shí)反饋拌和廠，及時(shí)調(diào)整。設(shè)專(zhuān)人消除粗細(xì)集料離析現(xiàn)象，如發(fā)現(xiàn)粗集料窩應(yīng)予鏟除，并用新料填補(bǔ)。此項(xiàng)工作必須在碾壓之前進(jìn)行，嚴(yán)禁用薄層貼補(bǔ)法找平，以免貼補(bǔ)層在使用過(guò)程中脫落壓碎，引起面層推移破裂。

The paver runs at a uniform speed without interruption to reduce waves and construction joints. Testers constantly monitor the proportion of finished materials and asphalt content, and provide timely feedback to the mixing plant for timely adjustment. Assign a dedicated person to eliminate the segregation of coarse and fine aggregates. If any coarse aggregate pits are found, they should be removed and filled with new materials. This work must be carried out before rolling, and it is strictly prohibited to use the thin layer patching method to level it, in order to prevent the patching layer from falling off and crushing during use, causing the surface layer to move and break.

攤鋪中的質(zhì)量缺陷主要有：厚度不均，平整度差（小波浪，臺(tái)階），混合料離析、裂紋、拉溝等。

The quality defects in paving mainly include uneven thickness, poor flatness (small waves, steps), mixture segregation, cracks, and grooves.

①粉料過(guò)多，溫度不當(dāng)，砂石未完全烘干，機(jī)械猛烈起步和緊急剎車(chē)，刮料護(hù)板安裝不當(dāng)均可引起裂紋。

① Excessive powder, improper temperature, incomplete drying of sand and gravel, violent mechanical starting and emergency braking, and improper installation of scraper protection plates can all cause cracks.

②瀝青含量過(guò)多或過(guò)少，礦粉含量不足；骨料尺寸與攤鋪厚度不協(xié)調(diào)；振搗梁與熨平板的相互位置調(diào)整不當(dāng)，振搗梁、熨平板底面磨損；刮料護(hù)板安裝不當(dāng)，熨平板接縫處理不當(dāng)?shù)纫鹄瓬稀?br />

② Excessive or insufficient asphalt content and insufficient mineral powder content; Incoordination between aggregate size and paving thickness; Improper adjustment of the mutual position between the vibrating beam and the ironing plate, resulting in wear on the bottom surface of the vibrating beam and ironing plate; Improper installation of the scraper guard board, improper handling of the joints of the ironing plate, etc. may cause pulling grooves.

③供料速度不勻；機(jī)械起步和剎車(chē)過(guò)猛；攤鋪速度不均勻；熨平板工作迎角調(diào)整過(guò)當(dāng)攤鋪機(jī)發(fā)動(dòng)機(jī)或驅(qū)動(dòng)鏈條松緊度未調(diào)好均會(huì)引起小波浪。

③ Uneven feeding speed; Mechanical starting and excessive braking; Uneven paving speed; If the angle of attack of the ironing plate is adjusted too much, it will cause small waves when the engine or driving chain of the paver is not properly tightened.

④熨平板底面磨損或嚴(yán)重變型時(shí)，鋪層容易產(chǎn)生裂紋和拉溝，故應(yīng)及時(shí)變換。有時(shí)熨平板的工作迎角太小，也會(huì)使鋪層的兩邊形成裂紋或拉溝。調(diào)整熨平板的前緣拱度，并在試鋪中多次調(diào)整，直到能鋪出具有良好的鋪層為止。如果多次調(diào)整仍消除不了上述缺陷，就應(yīng)該更換熨平板的底板。當(dāng)?shù)V料中的大顆粒尺寸大于攤鋪厚度時(shí)，在攤鋪過(guò)程中該大顆粒將被熨平板拖著滾動(dòng)，使鋪層產(chǎn)生裂紋、掛溝等。所以應(yīng)嚴(yán)格控制礦料粒徑，使其最大尺寸在規(guī)范之內(nèi)?；旌狭系呐浔炔划?dāng)，會(huì)產(chǎn)生全鋪層的裂縫，因?yàn)檎駬v梁在攤鋪過(guò)程中混合料進(jìn)行搗實(shí)的同時(shí)，還要將它向前推移。如果混合料的大顆粒過(guò)多，就會(huì)出現(xiàn)全鋪層的大裂縫。為了消除這種裂縫，有時(shí)可將熨平板加熱進(jìn)行熱熨，但大多數(shù)情況下需要改變混合料的配比。

④ When the bottom surface of the ironing plate is worn or severely deformed, the laying layer is prone to cracks and grooves, so it should be changed in a timely manner. Sometimes the working angle of attack of the ironing plate is too small, which can also cause cracks or grooves to form on both sides of the layer. Adjust the camber of the front edge of the ironing plate and adjust it multiple times during the trial laying until a good laying layer can be achieved. If the above defects cannot be eliminated after multiple adjustments, the bottom plate of the ironing plate should be replaced. When the size of large particles in the ore material is greater than the paving thickness, the large particles will be dragged and rolled by the iron plate during the paving process, causing cracks, hanging grooves, and other defects in the paving layer. Therefore, it is necessary to strictly control the particle size of the ore material to ensure that its maximum size is within the specifications. Improper mixing of the mixture can lead to cracks in the entire paving layer, as the vibrating beam must move the mixture forward while compacting it during the paving process. If there are too many large particles in the mixture, large cracks in the entire layer will appear. In order to eliminate such cracks, sometimes the iron plate can be heated for hot pressing, but in most cases, it is necessary to change the ratio of the mixture.

⑤輪胎攤鋪機(jī)氣壓超限（一般為0.5~0.55mpa），攤鋪機(jī)宜打滑；氣壓過(guò)低，機(jī)體會(huì)隨礦料重量變化而上下變動(dòng)，使攤鋪層出現(xiàn)波浪。履帶式攤鋪機(jī)履帶松緊超限將導(dǎo)致攤鋪速度發(fā)生沖脈，進(jìn)而使鋪面出現(xiàn)搓板。履帶或輪胎的行駛線上因卸料而灑落的粒料未清除，該部分?jǐn)備伜穸纫淄蛔儭?/div>