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道路基層冷再生施工材料準備及工藝應(yīng)用
來源：http://kqj188.com/ 日期：2022-06-22 發(fā)布人：
在實際的道路基層冷再生施工作業(yè)過程中，主要用到的施工材料有瀝青面層銑刨料、水泥和水等等。通常大部分施工單位在選擇水泥時，由于考慮到水泥化熱問題，所以一般都會采用硅酸鹽水泥，或是礦渣硅酸鹽水泥等，這是因為此類水泥含有的水泥化熱量較少，能夠防止施工裂縫的出現(xiàn)。
In the actual cold recycling construction of road base, the main construction materials used include asphalt surface milling materials, cement and water, etc. Generally, when most construction units choose cement, they usually use Portland cement, or slag Portland cement, etc. because the cement contains less heat of cementation, which can prevent the occurrence of construction cracks.
并且，施工單位還要對新入廠的水泥質(zhì)量進行嚴格的控制，堅決不允許使用變質(zhì)的水泥。其次，施工單位還需要確保水泥強度真正達到了國家規(guī)定標準要求，無論是水泥齡期，還是穩(wěn)定性，都滿足了工程施工要求。而一般水泥初凝時間都在3-5小時左右，后的終凝時間大概在6小時。
In addition, the construction unit shall strictly control the quality of new cement, and shall not allow the use of deteriorated cement. Secondly, the construction unit also needs to ensure that the cement strength truly meets the requirements of national standards, and that both the cement age and stability meet the construction requirements of the project. Generally, the initial setting time of cement is about 3-5 hours, and the final setting time is about 6 hours.
另外，道路基層冷再生施工工藝對于用水方面有著較高的要求，施工單位應(yīng)該盡量采用飲用水，或是完全沒有毒害物質(zhì)的純凈水。再者，在對銑刨料選用時，也要確保料粒直徑規(guī)格的一致，建議切實結(jié)合工程施工需要，選擇出合適理想的銑刨料。后，碎石作為基層混合料中主要的構(gòu)成材料，應(yīng)當對其強度、壓碎值等當面進行規(guī)范要求。
In addition, the road base cold regeneration construction process has high requirements for water, and the construction unit should try to use drinking water or pure water without toxic substances. In addition, when selecting milling materials, it is also necessary to ensure the consistency of material particle diameter and specification, and the appropriate and ideal milling materials must be selected in combination with the needs of project construction. As the main constituent material of the base course mixture, the strength and crushing value of the crushed stone shall be specified.
按照原有路基銑刨過的標高和冷再生混合料底新鋪基層的設(shè)計標高及經(jīng)試驗段確定的松鋪系數(shù)，將新鋪底基層的攤鋪高程計算出來，并進行施工放樣作業(yè)。
The paving elevation of the newly paved subbase shall be calculated according to the milled elevation of the original subgrade, the design elevation of the newly paved cold recycled mixture subbase and the loose paving coefficient determined by the test section, and the construction setting out shall be carried out.
將原有路面存有的雜物清理干凈，將邊線也清理干凈，同時將再生路段上面的井蓋等結(jié)構(gòu)物清除，將原有路面進行翻漿、車轍、沉陷等病害處理作業(yè)，確保原有路面的平整性。
Clean up the sundries on the original road surface and the sidelines. At the same time, remove the well covers and other structures on the recycled road section. Carry out the treatment of the original road surface for mud boiling, rutting, subsidence and other diseases to ensure the flatness of the original road surface.
在每平米新料添加量的計算中建議嚴格遵循原有路內(nèi)再生深度的平均密度進行計算。按照每車料的多少進行其堆放距離的確定。在對每平方米穩(wěn)定層水泥用量計算時，建議嚴格遵循水泥劑量要求進行，并對水泥擺放的縱橫間距進行確定。
In the calculation of new material addition per square meter, the average density of regeneration depth in the original road must be strictly followed. The stacking distance shall be determined according to the amount of each vehicle. When calculating the cement dosage per square meter of the stable layer, the cement dosage requirements must be strictly followed, and the vertical and horizontal spacing of cement placement shall be determined.
冷再生機租賃人員認為在原有路面上水車在冷再生機的推動下前行，遵循原有路面損壞情況及再生深度對行駛速度進行適當?shù)卣{(diào)整及控制，通常都會將速度控制在每分鐘6到12米，確保銑刨后料的級配不會產(chǎn)生較大的波動。
The leasing personnel of the cold recycling machine believe that the waterwheel moves forward under the promotion of the cold recycling machine on the original road surface, and the driving speed is properly adjusted and controlled according to the damage of the original road surface and the regeneration depth. Generally, the speed is controlled at 6 to 12 meters per minute, so as to ensure that the grading of milled materials will not fluctuate greatly.
在網(wǎng)裂較為嚴重的路段，建議將再生機組的行駛速度進行有效降低，并將銑刨轉(zhuǎn)子的轉(zhuǎn)速進行適量地提升。在再生機行駛中建議有工作人員跟隨在其后面，以便對再生深度進行隨時檢查，同時還要對水泥含量及混合料的含水量進行檢測，調(diào)整時，要與再生機工作人員相配合。
In the road section with serious net crack, the running speed of the regeneration unit must be effectively reduced, and the speed of the milling rotor must be appropriately increased. During the operation of the regenerator, there must be staff behind it to check the regeneration depth at any time. At the same time, the cement content and the water content of the mixture must be detected. When adjusting, it is necessary to cooperate with the staff of the regenerator.
在實際的施工過程中，施工單位建議加強做好質(zhì)量控制管理工作，嚴格按照相關(guān)規(guī)范制度開展施工作業(yè)，對易出現(xiàn)的問題進行事先預(yù)防，進一步提升冷再生施工技術(shù)水平，從而促進公路工程建設(shè)的可持續(xù)發(fā)展。
In the actual construction process, the construction unit must strengthen the quality control management, carry out the construction operation in strict accordance with the relevant specifications and systems, prevent the easy problems in advance, and further improve the technical level of cold regeneration construction, so as to promote the sustainable development of highway engineering construction.
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