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水泥就地冷再生底基層施工工藝的應(yīng)用
來源：http://kqj188.com/ 日期：2023-06-09 發(fā)布人：
水泥就地冷再生底基層的施工工藝流程：施工放樣→原路特殊處理→準(zhǔn)備新加石料→擺放及撒布水泥→再生機(jī)就位→冷再生機(jī)銑刨及拌和→整平突出→養(yǎng)生。下面冷再生機(jī)租賃廠家為您分析：
The construction process of cement on-site cold recycling subbase: construction layout → special treatment of the original road → preparation of new stone materials → placement and distribution of cement → placement of the recycling machine → milling and mixing of the cold recycling machine → leveling and rolling → curing. Below is an analysis of the cold regeneration machine rental manufacturer for you:
1 施工放樣
1. Construction layout
施工前應(yīng)對舊路進(jìn)行測量放樣，對縱斷線型不符合設(shè)計要求的要進(jìn)行縱坡調(diào)整，要控制大坡度和小坡長兩個技術(shù)指標(biāo)。對中線進(jìn)行放樣控制，保證在施工過程中不出現(xiàn)中線偏位的現(xiàn)象。對路面高程和橫坡進(jìn)行測量，如出現(xiàn)路基沉陷或變形的要進(jìn)行處理。
Before construction, the old road should be surveyed and laid out. If the longitudinal section line does not meet the design requirements, the longitudinal slope should be adjusted, and the two technical indicators of large slope and small slope length should be controlled. Set out and control the centerline to ensure that there is no deviation of the centerline during the construction process. Measure the elevation and cross slope of the road surface, and handle any settlement or deformation of the roadbed.
2 原路特殊處理
2. Special treatment of the original road
施工前對原路進(jìn)行路況檢測，對路基彎沉過大的要進(jìn)行路基換填。根據(jù)往年的施工經(jīng)驗，路基彎沉值大于120（0.01mm）的建議進(jìn)行換填。換填深度不小于80cm。換填材料建議選用級配好的透水性材料，分層突出填筑。對路基變形嚴(yán)重的，要進(jìn)行精細(xì)的預(yù)整平，預(yù)整平時要進(jìn)行高程控制，以便在冷再生施工時保證結(jié)構(gòu)層厚度。
Before construction, the original road condition should be inspected, and if the roadbed deflection is too large, the roadbed should be replaced. Based on previous construction experience, subgrade deflection values greater than 120 (0.01mm) must be replaced. The replacement depth shall not be less than 80cm. The replacement materials must be well graded and permeable materials, and layered rolling and filling must be used. For severe roadbed deformation, fine pre leveling should be carried out, and elevation control should be carried out during pre leveling to ensure the thickness of the structural layer during cold recycling construction.
3 準(zhǔn)備新加石料
3. Prepare new stone materials
冷再生底基層施工前使用冷再生機(jī)對原路面進(jìn)行取樣，試驗室進(jìn)行配合比設(shè)計。經(jīng)試驗檢測，若集料級配不符合要求，則根據(jù)試驗結(jié)果按比例進(jìn)行摻配。摻配的石料按每平米計算數(shù)量，均勻的攤鋪在舊路面上，冷再生機(jī)在銑刨過程中就會將新加的石料均勻的摻加到新再生層中，以改善石料級配，提高結(jié)構(gòu)層強(qiáng)度。
Before the construction of the cold recycled subbase, use cold recycled materials to sample the original road surface, and conduct mix design in the laboratory. After testing and detection, if the aggregate grading does not meet the requirements, the mixture will be mixed proportionally based on the test results. The amount of mixed stone is calculated per square meter and evenly spread on the old road surface. During the milling process of the cold recycling machine, the newly added stone is evenly added to the new recycling layer to improve the stone grading and enhance the strength of the structural layer.
4 擺放水泥及撒布水泥
4. Placing and Spreading Cement
根據(jù)配合比準(zhǔn)確計算出每袋水泥所需面積，格子面積好以2袋水泥用量確定，以方便擺放和撒布水泥。將格子中擺放的水泥均勻的撒布在每個格子內(nèi)，撒布完后要進(jìn)行整平，不得出現(xiàn)水泥空洞或堆積現(xiàn)象。冷再生機(jī)下方的刮板在銑刨過程中會進(jìn)一步將水泥刮均勻，保證再生層中的水泥含量均勻一致。
Accurately calculate the required area for each bag of cement based on the mix ratio, and determine the grid area based on the amount of cement used in 2 bags for easy placement and distribution of cement. Distribute the cement placed in each grid evenly, and after spreading, it should be leveled without any voids or accumulation of cement. The scraper below the cold regeneration machine will further scrape the cement evenly during the milling process, ensuring that the cement content in the regeneration layer is uniform and consistent.
5 再生機(jī)就位
5 Revitalization in place
冷再生機(jī)是一個機(jī)械組合，在冷再生機(jī)前方要連接水車，在冷再生機(jī)的工作過程中不斷提供水源。水車容積應(yīng)在12T以上，這樣可以減少停車加水的次數(shù)，好使用兩輛水車輪流更換，縮短加水時間，防止水泥失效。冷再生機(jī)在施工路段起點(diǎn)就位后應(yīng)再次檢查連接部位是否牢固，防止發(fā)生意外。檢查水管、開關(guān)等部位有無漏水現(xiàn)象，防止造成翻漿。
The cold regeneration machine is a mechanical combination that needs to be connected to a water wheel in front of the cold regeneration machine to continuously provide water source during its operation. The volume of the water truck should be above 12T, which can reduce the number of times to park and add water. It is easy to use two water trucks to replace each other in turn, shorten the water adding time, and prevent cement failure. After the cold regeneration machine is in place at the starting point of the construction section, the connection parts should be rechecked for firmness to prevent accidents. Check for water leakage in water pipes, switches, and other parts to prevent mud boiling.
6 冷再生機(jī)銑刨及拌和
6. Cold regeneration machine milling and mixing
各項準(zhǔn)備工作結(jié)束后，冷再生機(jī)進(jìn)行銑刨。冷再生機(jī)行走速度控制在5～8m/min。銑刨過后應(yīng)立即檢查相關(guān)項目。
After the preparation work is completed, the cold regeneration machine will perform milling and planing. The walking speed of the cold regeneration machine is controlled at 5-8m/min. After milling, relevant items should be checked immediately.
7 整平及突出
7 Leveling and Rolling
就地冷再生底基層整平采用平地機(jī)整平。整平前使用振動壓路機(jī)靜壓一遍，然后測量高程，根據(jù)高程進(jìn)行整平。
The local cold recycling subbase shall be leveled by Grader. Before leveling, use a vibrating roller to perform static pressure once, then measure the elevation and level according to the elevation.
8 養(yǎng)生
8 Health preservation
突出結(jié)束后利用養(yǎng)生布覆蓋養(yǎng)生，每天應(yīng)及時在養(yǎng)生布表面補(bǔ)充灑水，始終保持養(yǎng)生布處于濕潤狀態(tài)。養(yǎng)生期間要進(jìn)行交通管制，防止冷再生底基層被行車突出造成初期破壞。還有什么問題就來我們網(wǎng)站http://kqj188.com咨詢吧！
After the rolling is completed, use a health care cloth to cover the surface for health care. Water should be added to the surface of the health care cloth in a timely manner every day, and the health care cloth should always be kept moist. During the health preservation period, traffic control should be implemented to prevent the cold recycled subbase from being crushed by vehicles and causing initial damage. If you have any further questions, please come to our website http://kqj188.com Consult!
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