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公路路面養(yǎng)護(hù)冷再生知識(shí)你了解嗎？
來(lái)源：http://www.bystreet.cn/ 日期：2021-02-02
1.冷再生材料級(jí)配
1. Grading of cold recycled materials
國(guó)內(nèi)研究中常見(jiàn)的路面級(jí)配：水泥冷再生材料一般選用《公路路面基層施工技術(shù)規(guī)范》中的級(jí)配范圍；瀝青（+水泥）穩(wěn)定類材料篇采用路面設(shè)計(jì)規(guī)范中的AC13或AC20級(jí)配范圍，也有采用再生規(guī)范中的級(jí)配范圍。
Common pavement gradation in domestic research: Cement cold recycling materials generally use the gradation range in the technical code for construction of highway pavement base; asphalt (+ cement) stabilized materials use the gradation range of AC13 or ac20 in the pavement design code, and some also use the gradation range in the recycling code.
其他曾經(jīng)使用的級(jí)配有：維特根手冊(cè)中的級(jí)配范圍、ARRA法中的級(jí)配范圍、貝雷法控制級(jí)配，也有研究者自行設(shè)計(jì)級(jí)配。
Other gradations used include: the range of gradations in wittgens manual, the range of gradations in arra method, the controlled gradations by Bailey method, and the gradations designed by researchers themselves.
2.冷再生材料成形
2. Cold recycled material forming
冷再生材料的性質(zhì)與傳統(tǒng)道路材料不完全相同，因而對(duì)成形的要求也不完全相同。冷再生材料按再生劑大致可以區(qū)分為兩類：
The properties of cold recycled materials are not the same as those of traditional road materials, so the forming requirements are not the same. Cold recycled materials can be roughly divided into two types according to regenerants
無(wú)機(jī)再生劑和瀝青再生劑，瀝青再生時(shí)往往加入少量水泥以提高其抗水損壞能力。比較常用的無(wú)機(jī)再生劑是水泥，其他還有二灰、水泥粉煤灰等。
Inorganic regenerant and asphalt regenerant, when asphalt is recycled, a small amount of cement is often added to improve its water damage resistance. The most commonly used inorganic regenerant is cement, the others are lime fly ash, cement fly ash and so on.
無(wú)機(jī)穩(wěn)定冷再生一般按照傳統(tǒng)的半剛性材料進(jìn)行成形和養(yǎng)生。常溫下進(jìn)行重型擊實(shí)試驗(yàn)或者振動(dòng)擊實(shí)試驗(yàn)，在20℃或者25℃下養(yǎng)生7天。
Inorganic stable cold recycling is generally formed and cured according to traditional semi-rigid materials. Heavy compaction test or vibration compaction test shall be conducted at room temperature, and curing at 20 ℃ or 25 ℃ for 7 days.
通過(guò)含水量-強(qiáng)度關(guān)系確定含水量。瀝青穩(wěn)定劑冷再生時(shí)的情況比較復(fù)雜，尚無(wú)統(tǒng)一方法。
The water content was determined by the relationship between water content and strength. The situation of cold recycling of asphalt stabilizer is complex, and there is no unified method.
冷再生材料組成設(shè)計(jì)方法常見(jiàn)的方法是用擊實(shí)法確定液體量，用馬歇爾穩(wěn)定度、干劈裂強(qiáng)度、濕劈裂強(qiáng)度中的一個(gè)或幾個(gè)達(dá)到優(yōu)來(lái)確定瀝青用量。
The common method of composition design of cold recycled materials is to determine the amount of liquid by compaction, and determine the amount of asphalt by one or more of Marshall stability, dry splitting strength and wet splitting strength.
3.冷再生路面結(jié)構(gòu)
3. Cold recycled pavement structure
國(guó)外的冷再生基本結(jié)構(gòu)是：熱拌瀝青混合料層+冷再生層+舊有基層。舊有基層一般是砂礫基層。
The basic structure of cold recycling abroad is: hot mix asphalt mixture layer + cold recycling layer + old base. The old base is generally gravel base.
目前國(guó)內(nèi)的冷再生道路其中使用較多的結(jié)構(gòu)有熱拌瀝青混合料層+再生層+半剛性層和熱拌瀝青混合料層+再生層。
At present, the most commonly used structures of domestic cold recycling roads are hot mix asphalt mixture layer + recycling layer + semi-rigid layer and hot mix asphalt mixture layer + recycling layer.
隨著我國(guó)大量的路面進(jìn)入維修期，路面冷再生技術(shù)會(huì)得到更廣泛的使用。文章總結(jié)了國(guó)內(nèi)外再生的技術(shù)要點(diǎn)。
With a large number of pavements entering the maintenance period in China, the cold recycling technology will be more widely used. This paper summarizes the main points of regeneration technology at home and abroad.
國(guó)內(nèi)對(duì)冷再生前評(píng)價(jià)尚無(wú)專門的評(píng)價(jià)方法，需要進(jìn)一步研究；冷再生材料開始一般作為基層使用，目前逐步作為下面層使用；
There is no special evaluation method for pre cold recycling evaluation in China, which needs further study;
在我國(guó)冷再生施工中，水泥作為再生劑較多其實(shí)驗(yàn)方法已經(jīng)較為統(tǒng)一，主要的參考傳統(tǒng)的半剛性材料；而瀝青作為再生劑的冷再生實(shí)驗(yàn)方法還不統(tǒng)一，需要進(jìn)一步研究確定合理的實(shí)驗(yàn)方法。
In the construction of cold recycling in our country, there are many cement as recycling agent, and its experimental method has been more unified, mainly referring to the traditional semi-rigid materials; while the experimental method of asphalt as recycling agent is not unified, so it needs further research to determine the reasonable experimental method.
以上是公路路面養(yǎng)護(hù)冷再生知識(shí)的講解，相信大家都有所了解了，如想了解更多精彩資訊請(qǐng)多多關(guān)注我們的網(wǎng)站。
The above is the explanation of cold recycling knowledge of highway pavement maintenance. I believe you all know it. If you want to know more wonderful information, please pay more attention to our website.
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