瀝青路面就地冷再生施工施工工藝

　　On site cold regeneration construction technology for asphalt pavement

　　1、配合比設(shè)計(jì)

　　1. Mix proportion design

　　在現(xiàn)場(chǎng)再生機(jī)按6m/min～8m/min勻速緩慢拌和進(jìn)行取樣，試驗(yàn)室對(duì)所取混合料進(jìn)行篩分，分析混合料級(jí)配滿足規(guī)范級(jí)配要求，按5%水泥劑量進(jìn)行試配強(qiáng)度滿足設(shè)計(jì)需要。

　　Slowly mix at a constant speed of 6m/min to 8m/min in the on-site regeneration machine for sampling. The laboratory screens the selected mixture and analyzes that its gradation meets the specified gradation requirements. The strength of the trial mix is determined to meet the design requirements at a 5% cement dosage.

　　2、施工放樣

　　2. Construction layout

　　在再生施工之前，應(yīng)在道路的兩側(cè)放置一系列的標(biāo)樁作為基線，用來恢復(fù)道路的中心線。標(biāo)樁的間距，曲線距離不應(yīng)超過20米，直線距離不應(yīng)超過40米。

　　Before the regeneration construction, a series of stakes should be placed on both sides of the road as baselines to restore the centerline of the road. The spacing between stakes should not exceed 20 meters on curves and 40 meters on straight lines.

　　3、整理原路面

　　3. Organize the original road surface

　　原道路表面的石塊、垃圾、雜草等雜物和積水，并清理邊線。對(duì)原路的翻漿、車轍、沉陷、波浪、坑槽等病害進(jìn)行處理，使原路基本平整。

　　Remove debris such as stones, garbage, weeds, and standing water from the original road surface, and clean the edges. Treat the diseases such as mud turning, rutting, sinking, waves, and potholes on the original road to make it basically level.

　　4、準(zhǔn)備新加料

　　4. Prepare new materials

　　據(jù)原道路再生深度內(nèi)的平均密度，計(jì)算每平米新料的添加量。根據(jù)每車料的質(zhì)量或體積，計(jì)算每車料的堆放距離。

　　Calculate the amount of new material added per square meter based on the average density within the original road regeneration depth. Calculate the stacking distance for each vehicle based on its mass or volume.

　　5、擺放和撒布水泥

　　5. Placing and spreading cement

　　根據(jù)計(jì)劃當(dāng)日完成工程量及每袋水泥（50Kg）的攤鋪面積，計(jì)算所需水泥用量，將水泥送撒鋪路段，按每延米用量均勻擺放。在工作面用石灰方格網(wǎng)進(jìn)行標(biāo)注撒鋪，人工將水泥均勻攤開，注意使每袋水泥的撒布面積相等。水泥撒布完后，檢查水泥撒布是否均勻。

　　According to the planned completion quantity on the same day and the paving area of each bag of cement (50kg), calculate the required amount of cement, and send the cement to the paving section, evenly placing it according to the amount per linear meter. Mark and spread with lime grid on the working face, manually spread the cement evenly, and ensure that the spreading area of each bag of cement is equal. After the cement is spread, check if the cement is evenly distributed.

　　6、冷再生機(jī)銑刨與拌和

　　6. Cold regeneration machine milling and mixing

　　冷再生機(jī)推動(dòng)稀漿車或水車在原路面上行進(jìn)。施工中再生深度的檢查以相鄰已經(jīng)再生或原路面為標(biāo)準(zhǔn)，用鋼纖刺入土中，測(cè)量其刺入深度，看其深度是否合格。再生機(jī)后宜安排4～5人處理邊線和清理混合料中的雜質(zhì)以及每刀起始位置的余料，以防止影響縱向接縫、橫向接縫、平整度和再生材料的密實(shí)性。帶有熨平板的再生機(jī)，應(yīng)經(jīng)常檢查熨平板后混合料的厚度。

　　The cold regeneration machine drives the slurry truck or water truck to move on the original road surface. The inspection of the depth of regeneration during construction shall be based on the adjacent regenerated or original road surface. Steel fibers shall be inserted into the soil, and the penetration depth shall be measured to see if it is qualified. After the regeneration machine, it is advisable to arrange 4-5 people to handle the edges and clean the impurities in the mixture, as well as the remaining materials at the starting position of each blade, to prevent affecting the longitudinal and transverse joints, flatness, and compactness of the recycled material. A regeneration machine with an iron plate should regularly check the thickness of the mixture after the iron plate is pressed.

　　7、整平碾壓

　　7. Leveling and Rolling

　　冷再生機(jī)拌和完成后，用J20振動(dòng)壓路機(jī)進(jìn)行初壓，施工人員根據(jù)測(cè)量結(jié)果指揮平地機(jī)進(jìn)行整平。碾壓過程中始終保持表面濕潤(rùn)，禁止在已碾壓的路段上調(diào)頭或急剎車。從加水拌和到碾壓終止的時(shí)間不得超過使用水泥的初凝時(shí)間。

　　After the cold regeneration machine is mixed, the J20 vibrating roller is used for initial compaction, and the construction personnel command the leveling machine to level based on the measurement results. During the rolling process, always keep the surface moist and do not turn around or brake sharply on the road section that has already been rolled. The time from mixing with water to the end of compaction shall not exceed the initial setting time of the cement used.

　　8、養(yǎng)生及交通管制

　　8. Health and traffic control

　　碾壓成型并檢測(cè)合格后進(jìn)行不少于7天養(yǎng)生，水泥穩(wěn)定就地冷再生層宜養(yǎng)生7天后鋪筑上層混合料。除灑水車外，應(yīng)封閉交通。不能封閉交通時(shí)，應(yīng)限制重車通行。

　　After rolling and passing the inspection, the concrete should be cured for no less than 7 days. The cement stabilized cold recycled layer should be cured for 7 days before laying the upper layer mixture. Except for sprinkler trucks, traffic should be closed off. When traffic cannot be closed, heavy vehicles should be restricted from passing.