隨著我國公路行業(yè)的發(fā)展，現(xiàn)今我國早期所修建的公路都已經面臨大修以及中修了，每年都有著許多的瀝青路面需要進行維修和補建。如果在原有瀝青路面基礎上進行修建，那么將會使得路面被抬高，同時也會影響原來路面的相關配套設施的使用，而且這樣的補修方式也會使得成本投入變高，資源也會造成浪費。然而再生技術則能使原來路面的材料再次被投入到路面使用中，同時也能夠促使路面的性能恢復，極大程度的符合了可持續(xù)發(fā)展戰(zhàn)略需求。不過在這之中也需要相關技術人員加強研究與探索，限度的發(fā)揮出再生技術的利用價值。

　　With the development of China's highway industry, the highways built in the early days of our country are now facing major and medium repairs, and there are many asphalt pavements that need to be repaired and repaired every year. If the construction is carried out on the basis of the original asphalt pavement, it will raise the pavement and also affect the use of related supporting facilities on the original pavement. Moreover, this repair method will increase the cost investment and waste resources. However, regeneration technology can enable the materials of the original road surface to be reused on the road surface, while also promoting the recovery of road performance, which greatly meets the needs of sustainable development strategies. However, it is also necessary for relevant technical personnel to strengthen research and exploration in order to maximize the utilization value of regenerative technology.

　　現(xiàn)今我國公路總里程呈現(xiàn)出穩(wěn)步增長的局面，據(jù)交通運輸部統(tǒng)計數(shù)據(jù)顯示，2010年以來，我國公路總里程不斷增加，截止到2019年末，我國公路總里程為501.25萬，相對于去年增長了16.60萬。公路密度52.21/百平方，增加了1.73/百平方。隨著我國基礎建設投資、重視程度的增加，高速公路的建設也呈平穩(wěn)增長趨勢，高速公路里程14.96萬，增加了0.7萬。在公路建設持續(xù)發(fā)展的狀態(tài)下，交通流量也在不斷加大，這也給瀝青路面帶來了極大的壓力，早期的瀝青路面損毀較為嚴重，都面臨著大、中修整。在這之中再生技術的出現(xiàn)解決了燃眉之急，它的快速、、資源再利用等優(yōu)勢特點得到了極大青睞。

　　Currently, the total length of highways in China is showing a steady increase. According to statistics from the Ministry of Transport, since 2010, the total length of highways in China has been continuously increasing. As of the end of 2019, the total length of highways in China was 5.0125 million kilometers, an increase of 166000 kilometers compared to last year. The road density is 52.21 kilometers per 100 square kilometers, an increase of 1.73 kilometers per 100 square kilometers. With the increasing investment and emphasis on infrastructure construction in our country, the construction of highways has also shown a steady growth trend, with a total length of 149600 kilometers, an increase of 7000 kilometers. With the continuous development of highway construction, traffic flow is also increasing, which has brought great pressure to asphalt pavement. Early asphalt pavement was severely damaged and faced major and medium repairs. The emergence of regeneration technology has solved the urgent problem, and its advantages such as speed, environmental protection, and resource reuse have been greatly favored.

　　全深式就地冷再生施工工藝

　　Full depth on-site cold recycling construction technology

　　全深式就地冷再生施工工藝主要采用就地冷再生施工設備對需要修復的破損瀝青路面進行冷銑刨、破碎以及篩選，再按比例加入新集料、再生結合料、水泥、石灰、水等，經過常溫攪拌后，把這些物料鋪設路面上，再經碾壓后成型。這一施工工藝是需要一整套工序在現(xiàn)場有序的完成。其中全深式就地冷再生包含著瀝青材料層與非瀝青材料層

　　The full depth on-site cold recycling construction technology mainly uses on-site cold recycling construction equipment to cold mill, crush, and screen the damaged asphalt pavement that needs to be repaired. Then, new aggregates, recycled binders, cement, lime, water, etc. are added in proportion. After mixing at room temperature, these materials are laid on the pavement and then compacted to form. This construction process requires a complete set of procedures to be completed in an orderly manner on site. Among them, the fully deep in-situ cold recycling includes asphalt material layer and non asphalt material layer

　　全深式就地冷再生施工工藝與質量控制措施

　　Construction technology and quality control measures for fully deep on-site cold recycling

　　(1)全深式就地冷再生施工工藝原理全深式就地冷再生施工工藝需要將瀝青路面中全部厚度的瀝青面層與預定比例匯總的下臥層統(tǒng)一進行粉碎與攪拌融合在一起，以此來提供升級的均勻基層材料的維修技術。若舊材料中沒有足夠的力學性能與結構強度承載預期中的荷載，那么就需要在其中加入新的集料，同時也需要按照一定的比例加入定量的化學穩(wěn)定劑，以此來達到預期的效果。

　　(1) The principle of the full depth on-site cold recycling construction process requires the complete thickness of the asphalt surface layer in the asphalt pavement to be uniformly crushed and mixed with the predetermined proportion of the underlying layer, in order to provide upgraded and uniform base material maintenance technology. If the old material does not have sufficient mechanical properties and structural strength to bear the expected load, new aggregates need to be added to it, and a certain proportion of chemical stabilizers need to be added to achieve the expected effect.

　　在全深式就地冷再生施工工藝操作中需要再生層的下承層完好無損，且它的厚度應不低于10cm，同時也需要盡可能的滿足結構層面所需的強度需求。在全深式就地冷再生技術中，其中厚度對于單一壓實層在使用水泥與石灰時要把厚度控制在15~25cm之間。在使用乳化瀝青以及泡沫瀝青材質時厚度則需要控制在8~16cm之間。單層冷再生層面若厚度過厚那么在壓實該層面時就會出現(xiàn)問題，導致相關器械無法壓實該層面，特別在越下方的越不易被壓實。在滿足壓實度要求的再生層中，除了應在平均壓實度方面達到要求之外，表層5cm與底部5cm之間的密度差距應控制在2%以內。當然在施工過程中也可以選擇雙層再生，這就需要把存有一定厚度的表層材料進行銑刨，然后再對下面的路面進行就地冷再生，接著將銑刨的表層材料進行攪拌融合再進行鋪設。雙層再生層面鋪設不受之前所描述的厚度的限制。

　　In the operation of the fully deep on-site cold recycling construction process, it is necessary to ensure that the lower layer of the recycling layer is intact, and its thickness should not be less than 10cm. At the same time, it is also necessary to meet the strength requirements of the structural layer as much as possible. In the fully deep in-situ cold recycling technology, the thickness of a single compacted layer should be controlled between 15-25cm when using cement and lime. When emulsified asphalt and foam asphalt materials are used, the thickness should be controlled within 8~16cm. If the thickness of the single-layer cold recycling layer is too thick, there will be problems when compacting the layer, causing the relevant equipment to be unable to compact the layer, especially the lower the layer, the less likely it is to be compacted. In the recycled layer that meets the compaction requirements, in addition to meeting the requirements in terms of average compaction, the density difference between the surface 5cm and the bottom 5cm should be controlled within 2%. Of course, double-layer regeneration can also be chosen during the construction process, which requires milling and planing the surface material with a certain thickness, and then on-site cold regeneration of the underlying road surface. Then, the milled surface material is mixed and fused before laying. The double-layer regeneration layer is not limited by the thickness previously described.

　　(2)全深式就地冷再生施工中所使用的機械設施設備在運用全深式就地冷再生施工工藝時不需要使用大型機械設備，主要使用的機械設備包含再生設備、穩(wěn)定劑添加設備、平地機以及壓路機。

　　(2) The mechanical facilities and equipment used in the full depth on-site cold recycling construction do not require the use of large mechanical equipment when using the full depth on-site cold recycling construction process. The main mechanical equipment used includes recycling equipment, stabilizer addition equipment, grader, and roller.

　　冷再生機主要的功能就在于粉碎與回收材料，它在全深式就地冷再生施工工藝操作中占據(jù)著主要的位置。冷再生機可以粉碎、攪拌30cm厚度的瀝青路面及下臥層材料。在冷再生機設備中的滾筒中應該裝置可以進行替換的碳化鎢齒刀具，同時還應裝有人力操作與自動操作的裝置，另外這一設備也應可以有效的調節(jié)滾筒轉動速度，以此來適應不同厚度材質的粉碎與攪拌。

　　The main function of the cold recycling machine is to crush and recycle materials, and it occupies a major position in the operation of the full depth on-site cold recycling construction process. The cold recycling machine can crush and mix asphalt pavement and underlying layer materials with a thickness of 30cm. In the cold regeneration equipment, tungsten carbide toothed cutting tools that can be replaced should be installed in the drum, and manual and automatic operation devices should also be installed. In addition, this equipment should be able to effectively adjust the rotation speed of the drum to adapt to the crushing and mixing of materials with different thicknesses.

　　另外再生材料中若含水量沒有達到既定標準那么就需要讓其在通過干燥的過程中達到既定含水量標準，另外若再生材料過干，那么也需要補足水分。冷再生機就可以配備相應的水噴頭對再生材料添加水分，在對再生材料粉碎以及攪拌的過程中也可以進行水分的添加，同時在這時添加水分也能更好的進行估計。

　　In addition, if the moisture content in the recycled material does not meet the established standard, it needs to be allowed to reach the established moisture content standard during the drying process. In addition, if the recycled material is too dry, it also needs to be replenished with moisture. The cold regeneration machine can be equipped with corresponding water nozzles to add moisture to the regenerated material. During the process of crushing and stirring the regenerated material, moisture can also be added, and adding moisture at this time can better estimate.

　　當在再生材料中添加穩(wěn)定劑時，若添加的穩(wěn)定劑為粉狀物，那么就需要定量攤鋪撒料。干粉穩(wěn)定劑可以在粉碎瀝青層路面時加入也可以在冷再生機攪拌再生材料之前加入。不夠粉狀物的穩(wěn)定劑會受到天氣因素的影響，另外在定量攤鋪撒料操作中也易于產生塵霧，對施工操作人員和環(huán)境有著極大的影響。當穩(wěn)定劑為液體狀態(tài)加入到冷再生機中時，需要隨帶的計算機液體添加系統(tǒng)對各個液體添加量進行精準計算，同時也需要有一個與冷再生機前進速度相關的正互鎖系統(tǒng)，從而使得液體穩(wěn)定劑的添加量跟隨著冷再生機運行的變化而發(fā)生變化。

　　When adding stabilizers to recycled materials, if the stabilizer added is in powder form, it is necessary to spread the material in a quantitative manner. Dry powder stabilizer can be added during the crushing of asphalt pavement or before mixing the recycled material in the cold recycling machine. Stabilizers that are not powdery enough will be affected by weather factors, and in addition, dust and mist are easily generated during quantitative spreading operations, which have a great impact on construction operators and the environment. When the stabilizer is added to the cold regeneration machine in a liquid state, it is necessary to have a computerized liquid addition system to accurately calculate the amount of each liquid added. At the same time, a positive interlock system related to the speed of the cold regeneration machine is also required, so that the amount of liquid stabilizer added changes with the operation of the cold regeneration machine.

　　當冷再生機完成粉碎與攪拌融合任務后就需要運用到平地機進行鋪設與整形操作。在再生材料鋪設中對其鋪設的厚度有著嚴謹?shù)男枨?，因此在壓路機的選擇上就會偏重、大。因此經過壓路機的作用能夠讓再生材料的鋪設更加的完整、自然，能夠圓滿完成自身所需要完成的任務量，以此保證所鋪設的路面能夠滿足使用需求，能夠承載預期設計時的載重、荷載。

　　After the cold recycling machine completes the crushing and mixing fusion tasks, it needs to be applied to the leveling machine for laying and shaping operations. There is a strict requirement for the thickness of recycled material laying, so the selection of rollers will be biased and large. Therefore, through the action of the roller, the laying of recycled materials can be more complete and natural, and the required amount of tasks can be successfully completed to ensure that the road surface can meet the usage needs and bear the expected design load.

　　(3)全深式就地冷再生施工工藝技術要進行施工放樣，檢查全深式就地冷再生相關機械設施設備的準備情況，以及備料情況，接著再進行定格操作、鋪設水泥，在這一步驟中需要對水泥的用量進行細致的檢查。接著再使用冷再生機加水進行攪拌工作，這一步驟也需要檢查水泥劑量與用水量，一定要按照規(guī)定的標準以及需求使用相關材料，當攪拌完成后就將其鋪設路面，通過使用羊角碾進行初步碾壓，在碾壓過程中需要檢測厚度，厚度也需要按照相關要求進行操作。接下來就使用平地機進行壓平操作，這一步驟中需要補充灑水，同時施工人員要配合平地機進行壓平操作，避免一些地方操作漏失。然后再運用光輪壓路機對平地機壓過的路面進行復壓，在復壓過后膠輪壓路機要再壓一次，同時在這個過程中要檢測路面各個指標是否達到了設計要求。當以上操作都符合操作規(guī)范與各項指標后就需要將修復的這段瀝青路面安置防撞筒覆蓋土工布進行養(yǎng)生，以便之后更好的投入到使用中。

　　(3) The construction technology of full depth on-site cold recycling first requires construction layout, inspection of the preparation of relevant mechanical facilities and equipment, as well as material preparation. Then, the fixed frame operation and cement laying are carried out, in which the amount of cement needs to be carefully checked. Next, the cold recycling machine is used to add water for mixing work. This step also requires checking the cement dosage and water consumption. It is necessary to use relevant materials according to the prescribed standards and requirements. After mixing is completed, it is laid on the road surface and preliminarily rolled using a sheep horn roller. During the rolling process, the thickness needs to be checked and operated according to relevant requirements. The next step is to use a grader for flattening operation, which requires additional watering. At the same time, construction personnel should cooperate with the grader to carry out flattening operation to avoid operational errors in some areas. Then, the smooth wheeled roller is used to re press the road surface that has been flattened by the grader. After re pressing, the rubber wheeled roller needs to press again for the last time, and during this process, it is necessary to check whether the various indicators of the road surface meet the design requirements. When all the above operations comply with the operating specifications and various indicators, it is necessary to install a safety anti-collision tube on the repaired asphalt pavement and cover it with geotextile for curing, so as to better put it into use in the future.

　　在運用全深式就地冷再生施工工藝時需要將機械設備配備好，按照施工過程中所需要運用到的各項機械設備來按套配備，以此保證該工藝在施展時井然有序，避免手忙腳亂現(xiàn)象的發(fā)生。當建設施工過程中所需的設施設備到位后就需要對所需要使用到的各種材料用量進行計算。例如在水泥穩(wěn)定劑通過干粉狀加入時，應先計算出所需要摻和多少數(shù)量的水泥。公式為:水泥用量(kg/㎡)=壓實厚度(m)×干容量(kg/m?)×壓實度(%)×水泥劑量(%)/(1+水泥劑量(%))。通過這一公式來計算水泥用量，再推算水泥穩(wěn)定劑用量。

　　When using the full depth on-site cold recycling construction process, it is necessary to first equip the mechanical equipment according to the various mechanical equipment required during the construction process, in order to ensure that the process is carried out in an orderly manner and avoid the occurrence of flustered situations. After the necessary facilities and equipment are in place during the construction process, it is necessary to calculate the amount of various materials needed. For example, when adding cement stabilizer in dry powder form, the required amount of cement should be calculated first. The formula is: cement dosage (kg/㎡)=compacted thickness (m) × maximum dry capacity (kg/m?) × compaction degree (%) × cement dosage (%)/(1+cement dosage (%)). Calculate the amount of cement and then calculate the amount of cement stabilizer using this formula.

　　在全深式就地冷再生施工工藝操作過程中還能夠運用到一種預布材料，其中預布水泥需要對預布的長度進行控制，以此保障冷再生機在攪拌再生材料時能夠正常運行。另外也需要依據(jù)冷再生機的行駛速度以及路面坡度、橫坡的大小來確定預布的長度，在一般情況中預布長度為80~150m，在冷再生機攪拌再生材料的同時進行撒布操作，避免過往車輛在行駛過程中車速過快帶動預布造成污染，從而也對材料造成一定的損失、浪費。

　　In the operation process of the full depth on-site cold recycling construction technology, a pre laid material can also be used, in which the pre laid cement needs to be controlled in length to ensure the normal operation of the cold recycling machine when mixing recycled materials. In addition, the length of the pre cloth needs to be determined based on the driving speed of the cold recycling machine, as well as the size of the road slope and cross slope. In general, the pre cloth length is 80-150m. It is best to carry out the spreading operation while the cold recycling machine is mixing the recycled materials to avoid pollution caused by passing vehicles driving the pre cloth too fast during the driving process, which may also cause certain losses and waste to the materials.

　　在運用全深式就地冷再生施工工藝修補路面的過程中，冷再生機能夠處理的寬度一般會與路面的寬度之間存在著一定的差距，因此就需要多次進行粉碎操作來處理需要修補的瀝青路面，基于此就會使得路面出現(xiàn)多個縱向接頭以及一些搭接現(xiàn)象。

　　In the process of using the full depth on-site cold recycling construction technology to repair the road surface, there is generally a certain gap between the width that the cold recycling machine can handle and the width of the road surface. Therefore, multiple crushing operations are required to process the asphalt road surface that needs to be repaired, which will result in multiple longitudinal joints and some overlapping phenomena on the road surface.

　　其中冷再生機的工作速度對于之中能夠修補多少瀝青路面存在著極大的影響。在這之中瀝青路面的厚度、硬度以及需要加入到再生材料中的下臥層的厚度、再生材料的要求和冷再生機的生產能力等等都會對冷再生機的工作效率造成一定的影響。

　　The working speed of cold regeneration has a significant impact on how much asphalt pavement can be repaired in a day. The thickness and hardness of the asphalt pavement, as well as the thickness of the underlying layer that needs to be added to the recycled material, the requirements of the recycled material, and the production capacity of the cold recycling machine will all have a certain impact on the efficiency of the cold recycling machine.

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