舊瀝青路面冷再生機(jī)租賃機(jī)械如何進(jìn)行全面施工呢？在現(xiàn)在全面道路建設(shè)的基礎(chǔ)上， 我們有很多公路方面的技術(shù)問(wèn)題需要解決?，F(xiàn)在中國(guó)面臨公路運(yùn)輸已呈現(xiàn)出大流量、重荷載的局面。提高公路的使用價(jià)值是非常迫切的問(wèn)題。

How to carry out comprehensive construction of old asphalt pavement cold recycling machine rental machinery? On the basis of comprehensive road construction, we have many technical problems in the field of highways that need to be solved. Now China is facing a situation of high traffic and heavy loads in road transportation. Improving the value of highways is a very urgent issue.

因此， 大量早期修建的公路， 其技術(shù)性能已經(jīng)遠(yuǎn)遠(yuǎn)不能適應(yīng)現(xiàn)代形勢(shì)的需要。就河北省目前情況來(lái)講， 大部分的省級(jí)公路和縣級(jí)地方道路都是 80年代以前修建的， 這些公路技術(shù)等級(jí)低， 承載能力差， 并且已經(jīng)損壞嚴(yán)重， 亟待進(jìn)行技術(shù)改造。

Therefore, the technical performance of a large number of early built highways is far from meeting the needs of modern situations. In terms of the current situation in Hebei Province, most of the provincial and county-level local roads were built before the 1980s. These roads have low technical grade, poor bearing capacity, and have been severely damaged, urgently requiring technical renovation.

冷再生機(jī)出租

Rental of cold regeneration machine

在舊瀝青路面改造方面， 河北省邯鄲市、廊坊市和石家莊市均先后引進(jìn)了瀝青路面就地冷再生設(shè)備， 并進(jìn)行了大面積的施工嘗試， 都獲得了很好的經(jīng)濟(jì)效益和社會(huì)效益。 實(shí)踐證明， 針對(duì)我省的公路現(xiàn)狀， 采用就地冷再生施工技術(shù)對(duì)舊瀝青路面進(jìn)行技術(shù)改造是科學(xué)可行的。

In terms of the renovation of old asphalt pavement, Handan City, Langfang City, and Shijiazhuang City in Hebei Province have successively introduced on-site cold recycling equipment for asphalt pavement and conducted large-scale construction attempts, all of which have achieved good economic and social benefits. Practice has proven that it is scientifically feasible to use on-site cold recycling construction technology to renovate old asphalt pavement in response to the current situation of highways in our province.

1、就地冷再生的施工原理瀝青路面就地冷再生并不是人們通常所理解的將已破損的瀝青路面重新恢復(fù)到完好的原始狀態(tài)， 而是將舊面層和部分基層一并打碎混合之后就地改建成新的基層（ 或底基層） 。 嚴(yán)格地講， 此工藝應(yīng)該稱之為舊瀝青路面材料的就地再利用。路面就地冷再生的工作原理， 是在原有舊路鋪層的基礎(chǔ)上， 按照新的設(shè)計(jì)要求， 選擇性地?fù)饺脒m量的骨料、水泥、石灰、粉煤灰、乳化瀝青、泡沫瀝青和水等外加材料， 利用就地冷再生設(shè)備，實(shí)際上就是一臺(tái)大型的穩(wěn)定土路拌機(jī)） , 在自然常溫下， 就地連續(xù)完成對(duì)舊鋪層（ 路面和部分基層） 的銑刨、破碎、添加料、拌和、攤鋪等工序， 隨后進(jìn)行找平和碾壓， 終修建出一種特殊級(jí)配的道路基層（ 或底基層） 。

1. The construction principle of on-site cold regeneration of asphalt pavement is not commonly understood as restoring damaged asphalt pavement to its original state, but rather breaking and mixing the old surface layer and some of the base layer, and then rebuilding it on site into a new base layer (or sub base layer). Strictly speaking, this process should be referred to as the in-situ reuse of old asphalt pavement materials. The working principle of cold in place recycling of pavement is to selectively add some additional materials such as aggregate, cement, lime, fly ash, emulsified asphalt, foam asphalt and water on the basis of the original old pavement according to the new design requirements, and use the cold in place recycling equipment, which is actually a large stabilized soil road mixer. Under natural normal temperature, the old pavement (pavement and part of the base) is continuously completed in place The milling, crushing, adding materials, mixing, paving and other processes are carried out, followed by leveling and rolling to finally build a special graded road base (or sub base).

2、就地冷再生的適用范圍和優(yōu)點(diǎn)由于就地冷再生施工是將原道路的面層和基層變成了新的道路基層（ 或底基層） , 致使新道路的面層至少要在此標(biāo)高的基礎(chǔ)上開(kāi)始鋪筑， 況且在高標(biāo)準(zhǔn)的道路改造中， 有時(shí)是將再生層作為底基層， 在此基礎(chǔ)上還要加鋪二灰碎石等基層材料， 這就使得改造之后的路面標(biāo)高遠(yuǎn)遠(yuǎn)大于原來(lái)路面的標(biāo)高，沿路構(gòu)造物處路面的設(shè)計(jì)結(jié)構(gòu)將隨之發(fā)生變化。如果在城市道路中采用此法施工，原有的排水系統(tǒng)也將隨之受到一些影響。 因此， 對(duì)于路面標(biāo)高有較嚴(yán)格限制的道路，不宜采用此法施工。

2. The scope and advantages of on-site cold recycling are due to the fact that on-site cold recycling construction transforms the original road surface layer and base layer into a new road base layer (or sub base layer), which requires the new road surface layer to be laid at least on this elevation. Moreover, in high standard road renovations, sometimes the recycled layer is used as the sub base layer, and on this basis, base materials such as fly ash and crushed stone are also added, This makes the elevation of the renovated road surface much higher than the original elevation, and the design structure of the road surface along the road structure will change accordingly. If this method is used for construction on urban roads, the existing drainage system will also be affected. Therefore, for roads with strict restrictions on road surface elevation, this method should not be used for construction.

雖然就地冷再生的適用范圍受到路面標(biāo)高的限制，但在絕對(duì)多數(shù)的一般道路改造中，與傳統(tǒng)的施工方法相比，依然具有諸多的優(yōu)點(diǎn)。

Although the applicability of on-site cold regeneration is limited by road surface elevation, it still has many advantages compared to traditional construction methods in the vast majority of general road renovations.

（1）工序簡(jiǎn)單 由于原有舊路面的材料全部被就地利用， 省略了挖掘6 外運(yùn)6 廠內(nèi)加工及回填等一系列工作，使得施工工序大大簡(jiǎn)化。

(1) The process is simple. Due to the fact that all the materials from the original old road surface are used on site, a series of tasks such as excavation, external transportation, and internal processing and backfilling are omitted, greatly simplifying the construction process.

（2）成本較低 國(guó)外的一些施工資料顯示，與傳統(tǒng)的施工方法相比，由于舊的道路材料得以全部利用，隨著再生層厚度的不同，大致可以降低成本 20%~46%。厚度越深，降低成本越多，我國(guó)目前在這方面總結(jié)的資料還不多，但就從我省對(duì)該施工法進(jìn)行的定額測(cè)定結(jié)果來(lái)看，此工藝能夠降低工程成本是肯定的。

(2) According to some construction materials from foreign countries with lower costs, compared with traditional construction methods, due to the full utilization of old road materials, the cost can be reduced by approximately 20% to 46% with different thicknesses of recycled layers. The deeper the thickness, the greater the cost reduction. Currently, there is not much information summarized in this regard in China. However, based on the quota measurement results of this construction method in our province, it is certain that this technology can reduce engineering costs.

（3）提高道路等級(jí) 由于該施工法強(qiáng)化了基礎(chǔ)的承載能力# 如果新的設(shè)計(jì)級(jí)配合理，可使再生層的強(qiáng)度達(dá)到 （ 13-15Mpa） ，從根本上保證了道路等級(jí)的提高。這一優(yōu)點(diǎn)對(duì)于低等級(jí)道路的改造尤為重要。

(3) The improvement of road grade is due to the construction method strengthening the bearing capacity of the foundation. If the new design grading is reasonable, the strength of the recycled layer can reach (13-15Mpa), fundamentally ensuring the improvement of road grade. This advantage is particularly important for the renovation of low-grade roads.

（4）生產(chǎn)效率高 就地冷再生是在自然條件下進(jìn)行的，除了個(gè)別嚴(yán)重的坑槽需要簡(jiǎn)單的預(yù)處理外，其余路面均不需要任何處理。再加之一次性通過(guò)的施工特點(diǎn)，充分地利用了作業(yè)時(shí)間， 因此大大地提高了生產(chǎn)效率，在水穩(wěn)路基二灰碎石施工時(shí)，經(jīng)過(guò)我們的實(shí)地測(cè)定，一臺(tái) WR2300L型再生機(jī)，在組織合理的情況下， 每個(gè)工作臺(tái)班可以再生路面4000㎡以上。

(4) High production efficiency on-site cold regeneration is carried out under natural conditions, and except for a few severe potholes that require simple pre-treatment, all other road surfaces do not require any treatment. In addition, the one-time pass construction feature fully utilizes the working time, greatly improving production efficiency. During the construction of water stabilized roadbed with fly ash and crushed stone, after our on-site measurement, a WR2300L recycling machine can regenerate more than 4000 square meters of road surface per work shift under reasonable organization.

（5）保護(hù)環(huán)境和資源 因?yàn)榕f料得以全部就地利用，減少了新材料的開(kāi)采，也不存在舊料運(yùn)輸和廢料隨意棄放的問(wèn)題，施工過(guò)程沒(méi)有粉塵和廢氣的污染，節(jié)約了資源，保護(hù)了環(huán)境，因此有人稱之為“綠色” 施工技術(shù)！

(5) Protecting the environment and resources, as old materials can be fully utilized on site, reducing the extraction of new materials, and there is no problem of transportation of old materials and arbitrary disposal of waste materials. The construction process is free from dust and exhaust gas pollution, saving resources and protecting the environment. Therefore, some people call it "green" construction technology!

（6）可以不中斷交通施工 由于就地冷再生工序簡(jiǎn)單“ 投入現(xiàn)場(chǎng)的施工設(shè)備很少” 對(duì)交通干擾反應(yīng)不敏感！故此在交通量不太大的情況下“ 可以半幅通車” 半幅施工！

(6) Construction can be carried out without interruption due to the simple on-site cold regeneration process and the lack of construction equipment. It is not sensitive to traffic interference! Therefore, in situations where the traffic volume is not too high, half of the construction can be opened to traffic!

3、 常用施工方案

3. Common construction plans

根據(jù)原有道路結(jié)構(gòu)和新設(shè)計(jì)方案的不同， 就地冷再生可以組合出多種施工方案！其實(shí)各種施工方案的工作原理都是一樣， 區(qū)別只是摻入材料的不同而加入的方法也有所不同而已！但就我國(guó)北方地區(qū)道路結(jié)構(gòu)來(lái)講，以水泥為添加料對(duì)瀝青路面進(jìn)行就地冷再生是常用的一種方案！

According to the difference between the original road structure and the new design scheme, on-site cold regeneration can combine multiple construction schemes! In fact, the working principle of various construction plans is the same, and the only difference is that the materials added are different, and the methods used are also different! But in terms of road structure in northern China, using cement as an additive for on-site cold regeneration of asphalt pavement is a commonly used solution!

在利用水泥進(jìn)行就地冷再生時(shí)，外加料主要是水泥，水泥的通常用量按重量計(jì)在2%-5%之間比較合適。如果水泥的用量過(guò)多，容易使再生層變脆。為了獲得良好的壓實(shí)效果，同時(shí)還要加入適量的水。水泥的加入方法有兩種！一種是利用人工或?qū)Ｓ脵C(jī)械將水泥預(yù)先撒布在需要再生的路面上。這時(shí)水的加入方法，是通過(guò)再生機(jī)上所配備的微機(jī)控制系統(tǒng)從跟班作業(yè)的運(yùn)水車內(nèi)輸送到再生機(jī)的拌和倉(cāng)中，另一種方法是采用水泥稀漿攪拌輸送車，將需要添加的水泥和水?dāng)嚢璩伤嘞{，再通過(guò)再生機(jī)上的控制系統(tǒng)將其輸送到再生機(jī)的拌和倉(cāng)中。

When using cement for on-site cold regeneration, the main additive is cement, and the usual dosage of cement is between 2% and 5% by weight, which is more suitable. If the amount of cement used is too much, it is easy to make the recycled layer brittle. In order to achieve a good compaction effect, an appropriate amount of water should also be added. There are two ways to add cement! One method is to use manual or specialized machinery to pre distribute cement on the road surface that needs to be recycled. The method of adding water at this time is to transport it from the accompanying water transport truck to the mixing bin of the regeneration machine through the microcomputer control system equipped on the regeneration machine. Another method is to use a cement slurry mixing truck to mix the cement and water that needs to be added into cement slurry, and then transport it to the mixing bin of the regeneration machine through the control system on the regeneration machine.