近日，貴港城區(qū)公路養(yǎng)護(hù)中心S511線西江農(nóng)場(chǎng)八隊(duì)上村屯（上行）（K72+250～K73+750、K78+670～K81+170）瀝青路面預(yù)防性養(yǎng)護(hù)工程開工建設(shè)，該項(xiàng)目使用了泡沫瀝青冷再生施工工藝。

　　Recently, the construction of asphalt pavement preventive maintenance project of Team 8, Xijiang Farm, Line S511, Guigang Urban Road Maintenance Center to Shangcun Village (up) (K72+250~K73+750, K78+670~K81+170) started, which uses the construction process of foam asphalt cold recycling.

　　該養(yǎng)護(hù)路段是S511線來賓玉林公路的重要組成部分，因該路段瀝青路面出現(xiàn)了龜裂、車轍、縱橫裂縫等病害，影響公路交通和正常運(yùn)營(yíng)，同時(shí)也給日常養(yǎng)護(hù)工作帶來了壓力，該中心綜合設(shè)計(jì)評(píng)審意見，使用泡沫瀝青冷再生施工工藝對(duì)該路段進(jìn)行修復(fù)。

　　This maintenance section is an important part of Laibin Yulin Highway of S511 Line. Because the asphalt pavement of this section has cracks, ruts, vertical and horizontal cracks and other diseases, which affect the road traffic safety and normal operation, and also bring pressure to the daily maintenance work, the center uses the foam asphalt cold recycling construction process to repair this section based on the design review comments.

　　泡沫瀝青冷再生施工工藝是采用就地冷再生機(jī)、壓路機(jī)、運(yùn)料車、瀝青罐車、水罐車等施工設(shè)備，將舊瀝青路面開挖銑刨，添加泡沫瀝青等拌合材料，將銑刨的舊路面材料與新添加材料均勻拌合，并攤鋪、壓實(shí)，形成新的路面結(jié)構(gòu)層。這種施工工藝直接將舊路面進(jìn)行加工和處理，進(jìn)行重新鋪設(shè)再利用，不僅可以縮短工期，還能夠減輕環(huán)境污染，減少材料消耗，實(shí)現(xiàn)公路交通運(yùn)輸可持續(xù)發(fā)展。

　　The construction process of foam asphalt cold recycling is to use construction equipment such as on-site cold recycling machine, road roller, dumper, asphalt tanker, water tanker, etc. to excavate and mill the old asphalt pavement, add mixing materials such as foam asphalt, evenly mix the milled old pavement materials with the newly added materials, pave and compact them, and form a new pavement structure layer. This construction technique directly processes and treats the old road surface, re laying and reusing it, which not only shortens the construction period, but also reduces environmental pollution, reduces material consumption, and achieves sustainable development of highway transportation.

　　該預(yù)防性養(yǎng)護(hù)工程修復(fù)里程為4，通過回填利用原15cm厚摻2.5%水泥穩(wěn)定碎石基層進(jìn)行路面病害處理后，鋪筑12cm厚AC-25泡沫瀝青混凝土就地冷再生下面層+熱瀝青粘層+3.5cm厚AC-16瀝青混凝土上面層進(jìn)行預(yù)防性養(yǎng)護(hù)，預(yù)計(jì)6月底完成路面主體施工。

　　The repair mileage of the preventive maintenance project is 4km. After the original 15cm thick cement stabilized macadam base mixed with 2.5% cement is used for treatment of pavement diseases through backfilling, the 12cm thick AC-25 foam asphalt concrete cold recycling lower layer in place+hot asphalt tack coat+3.5cm thick AC-16 asphalt concrete upper layer are paved for preventive maintenance. It is expected to complete the main construction of the pavement by the end of June.

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