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就地冷再生技術在工程中的設計方案
來源：http://kqj188.com/ 日期：2023-03-01 發(fā)布人：
就地冷再生技術是在常溫下使用冷再生專用機械連續(xù)完成銑刨和破碎舊路面結(jié)構層（包括面層和部分基層）、添加再生材料、拌和、攤鋪、突出等作業(yè)過程，重新形成具有一定承載能力的結(jié)構層。就地冷再生技術施工中使用的骨料主要有銑刨下來的舊瀝青面層材料、舊基層材料、新添加碎石等。冷再生機租賃廠家為您講解：
The local cold recycling technology is to use the special cold recycling machinery to continuously complete the process of milling and crushing the old pavement structural layer (including the surface layer and part of the base layer), adding recycled materials, mixing, paving, rolling and other operations under the normal temperature, and re-form the structural layer with a certain bearing capacity. The aggregates used in the construction of local cold recycling technology mainly include milled old asphalt surface material, old base material, newly added gravel, etc. The cold regeneration machine rental manufacturer explains to you:
由于骨料中包含瀝青碎屑以及裹覆瀝青膜的礦料，因而成型的冷再生結(jié)構層與水泥穩(wěn)定碎石等半剛性基層強度特性略有不同。冷再生基層的回彈變形比水泥穩(wěn)定碎石和瀝青砼都要大，處于半剛性和柔性基層之間，既有半剛性基層的板體強度，又有柔性基層的抗變形能力，同時可以減少溫縮、干縮裂縫。
Because the aggregate contains asphalt chips and mineral aggregate coated with asphalt film, the strength characteristics of formed cold recycled structural layer are slightly different from that of semi-rigid base such as cement stabilized crushed stone. The rebound deformation of cold recycled base is larger than that of cement stabilized macadam and asphalt concrete. It is between semi-rigid base and flexible base. It has both the strength of slab of semi-rigid base and the anti-deformation ability of flexible base, and can reduce temperature shrinkage and dry shrinkage cracks.
就地冷再生技術施工工藝簡單，縮短工期，節(jié)能環(huán)保，尤其適應于普通干線公路養(yǎng)護維修工程的施工，應用前景非常廣闊。
The local cold regeneration technology has simple construction process, short construction period, energy conservation and environmental protection. It is especially suitable for the construction of maintenance and repair works of ordinary trunk highways, and has a broad application prospect.
隨著使用年限增加，以及交通量急劇增加、大噸位車輛增多，導致局部路段路基翻漿、變形，路面沉陷、坑槽、雍包、松散、龜裂破壞。
With the increase of the service life, the sharp increase of traffic volume and the increase of large-tonnage vehicles, the subgrade of local sections is subject to frost boiling and deformation, and the pavement is subject to subsidence, pits, cracks, looseness and cracking.
對路基病害進行處理，然后重鋪路面結(jié)構層，其結(jié)構形式為：3.5㎝厚AC-13瀝青混凝土上面層+5cm厚AM-16熱再生瀝青碎石混合料下面層+20㎝厚5%水泥穩(wěn)定碎石基層+15cm厚4.5%水泥穩(wěn)定就地冷再生底基層。
The subgrade disease shall be treated, and then the pavement structural layer shall be resurfaced. Its structural form is: 3.5 cm thick AC-13 asphalt concrete upper layer+5 cm thick AM-16 hot recycled asphalt macadam mixture lower layer+20 cm thick 5% cement stabilized macadam base+15 cm thick 4.5% cement stabilized local cold recycled subbase.
材料要求
Material requirements
水泥穩(wěn)定就地冷再生底基層的水泥宜采用標號32.5的普通硅酸鹽水泥，水泥初凝時間應大于3h，終凝時間應大于6h且小于10h。
Ordinary Portland cement with grade 32.5 should be used as the cement for cement stabilized local cold regeneration subbase. The initial setting time of cement should be more than 3h, and the final setting time should be more than 6h and less than 10h.
冷再生用水應為可飲用水，使用非飲用水應經(jīng)過試驗驗證，不影響產(chǎn)品和工程質(zhì)量時方可使用。
The cold regeneration water shall be potable water, and the use of non-potable water shall be tested and verified, and can be used only when it does not affect the product and project quality.
就地冷再生經(jīng)對原路銑刨取樣試驗，能夠達到《公路路面基層施工技術細則》要求，對銑刨料做液塑限試驗，其液限為32%，塑限為26%，塑性指數(shù)為6%，符合規(guī)范要求，因此對再生料級配按表一的級配控制。局部地段若級配不符合下表要求，可添加級配礫石或碎石調(diào)整。
The local cold recycling can meet the requirements of the Technical Rules for Construction of Highway Pavement Base Course after the sampling test of the original road milling. The liquid-plastic limit test of the milling material is 32%, the plastic limit is 26%, and the plastic index is 6%, which conforms to the specification requirements. Therefore, the grading of the recycled material is controlled according to the grading in Table 1. If the grading of local sections does not meet the requirements of the following table, graded gravel or crushed stone can be added for adjustment.
就地冷再生技術在工程中的設計方案相關內(nèi)容就到這里了，您有什么事項就來我們網(wǎng)站http://kqj188.com咨詢吧！
This is the relevant content of the design scheme of the in-place cold regeneration technology in the project. If you have any questions, please come to our website http://kqj188.com Ask!
下一篇：冷再生機攪拌不均勻要怎么處理？ 上一篇：就地冷再生進行突出整形注意六點
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