行业资讯
冷再生机铣刨施工工艺先进性的表现
来源:https://www.sddhfjx.com/ 日期:2023-04-21
冷再生机铣刨应用于道路稳定土具有施工效率高、施工质量保证性好、机械化施工程度高等特点,在稳定土施工中具有良好的作业效果。冷再生机铣刨施工工艺先进性的表现如何呢?下面冷再生机租赁厂家为您分析:
The application of cold recycling machine milling in road stabilized soil has the characteristics of high construction efficiency, good construction quality assurance, and high degree of mechanized construction, and has good operational effects in stable soil construction. How about the progressiveness performance of cold recycling machine milling construction technology? Below is an analysis of the cold regeneration machine rental manufacturer for you:
施工效率
Construction efficiency
(1)冷再生机工作原理是采用冷再生技术,它是将需要改建或大修的路面,经过翻挖回收、破碎、筛分,并加入适量的稳定剂(本项目稳定剂为32.5水泥),在常温情况下重新拌和,形成具有一定路用性能的再生混合料,用于铺筑路面基层或底基层的整套工艺技术。
(1) The working principle of the cold recycling machine is to use cold recycling technology. It is a complete process technology that involves digging, recycling, crushing, screening, and adding an appropriate amount of stabilizer (32.5 cement in this project) to the road surface that needs to be rebuilt or overhauled. It is then remixed at room temperature to form a recycled mixture with certain road performance, which is used for paving the road surface base or subbase.
冷再生机在铣刨时采取与水车直连的方式,推动水车前行施工。综合按每分钟行走10-15m计算,平均每天的施工断面可达800m,按照本项目道路设计水稳层宽度9.5m计算,即每天可完成7600m2。
The cold regeneration machine adopts a direct connection with the water truck during milling to drive the water truck forward for construction. Based on a comprehensive calculation of 10-15m walking per minute, the average daily construction section can reach 800m. According to the design water stability layer width of 9.5m for this project's road, 7600m2 can be completed per day.
(2)路拌机的马力一般是360/400,平均每天施工量约5500m2即580m。路拌机基层稳定前必须对稳定路面进行洒水闷料,等稳定土含水量大于佳含水量的1-2%时路拌机才能开始作业,但在天气干热地区,水分散失过快,这样就加大了闷料的难度,同时难以保证施工进度。
(2) The horsepower of the road mixer is generally 360/400, and the average daily construction volume is about 5500m2 or 580m. Before stabilizing the base layer of the road mixer, it is necessary to sprinkle water and fill the stable road surface with materials. Only when the moisture content of the stabilized soil is greater than 1-2% of the optimal moisture content can the road mixer start operating. However, in dry and hot weather areas, the water loss is too fast, which increases the difficulty of filling materials and makes it difficult to ensure construction progress.
(3)平地机的主要作用是平整路面,若使用平地机对基层拌合施工,会影响机械的施工效率,产生窝工,同时在平地机拌合料时要不断加水而保证含水量,也很难保证能将混合料拌合均匀,施工难度大。
(3) The main function of the grader is to level the road surface. If the grader is used to mix the base course, it will affect the construction efficiency of the machinery and cause idleness. At the same time, when the grader is used to mix the materials, it is necessary to constantly add water to ensure the water content. It is also difficult to ensure that the mixture can be mixed evenly, and the construction is difficult.
(4)摊铺机施工稳定土必须建立拌和站,而且摊铺宽度也必须增加至少1m。比如:项目线路全长154公里,若是运输距离过远,摊铺机肯定会出现窝工现象,影响施工进度。
(4) A mixing station must be established for paver to construct stabilized soil, and the paving width must be increased by at least 1m. For example, the total length of the project line is 154km. If the transportation distance is too far, the paver will certainly slow down and affect the construction progress.
比如假设运输距离为10KM,每台车运8m3(压实)料,从拌和站装满料运到现场卸料后再返回预计需要1小时,每天可往返8趟,10台车每天可运输640m3(8*8*10),按摊铺10.5m(9.5m+1m)宽度计算,即每天可完成406m。
For example, assuming a transportation distance of 10KM, each vehicle transports 8m3 (compacted) of material, and it is expected to take 1 hour to transport the full material from the mixing station to the site for unloading before returning. It can take 8 trips per day, and 10 vehicles can transport 640m3 (8 * 8 * 10) per day. Calculated based on a width of 10.5m (9.5m+1m) for paving, 406m can be completed per day.
施工质量
Construction quality
(1)对于水稳层来说,层厚和佳的含水量是不容易掌握的,冷再生机连接水车,推动水车施工,冷再生机后配有专人检测铣刨深度和含水量大小,在发现铣刨深度或含水量不达标的情况下,冷再生机驾驶员可以在驾驶室内直接通过电脑调整铣刨深度和供水量,另外冷再生机驾驶舱外还配有水阀开关,可以手动调节水量大小,保证其满足铣刨深度并处于佳的含水量状态。
(1) For the water stable layer, it is not easy to grasp the layer thickness and optimal water content. The cold regeneration machine is connected to the water truck to drive the construction of the water truck. After the cold regeneration machine, a dedicated person is equipped to detect the milling depth and water content. If the milling depth or water content is found to be not up to standard, the cold regeneration machine driver can directly adjust the milling depth and water supply through a computer in the driver's cab. In addition, the cold regeneration machine is also equipped with a water valve switch outside the driver's cabin, The water content can be manually adjusted to ensure that it meets the milling depth and has an optimal water content state.
冷再生机铣刨后压路机即进行封水工作,确保水分不散失。这样就可以保证终压时不出现“鼓包”、“弹簧”等现象。另外由于水泥终凝时间较短(一般在4小时左右),而冷再生机工序衔接紧密,在铣刨完一段后(约100m)平地机就可以精平、终压,铣刨一段完成一段,可以确保施工质量。
After the cold regeneration machine is milled and planed, the roller immediately performs sealing work to ensure that water is not lost. This can ensure that there are no "bulges", "springs" or other phenomena during the final pressure. In addition, because the final setting time of cement is relatively short (generally about 4 hours), and the cold recycling machine processes are closely connected, the grader can finish leveling and final pressing after one section of milling (about 100m), and the construction quality can be ensured by finishing one section of milling.
(2)路拌机在施工时平均每50-100m会产生一个施工接缝,施工接缝若不能妥善处理对路基的危害会很大,同时路拌机施工时水分散失过快,而在补水的时候会出现水分不均匀也,同时增加了施工时间,会严重影响碾压后的基层质量。
(2) During construction, the road mixer produces an average of one construction joint every 50-100m. If the construction joint cannot be properly treated, it will pose a great threat to the roadbed. At the same time, the water loss during the construction of the road mixer is too fast, and uneven water may occur during water replenishment, which increases the construction time and seriously affects the quality of the compacted base layer.
(3)平地机拌合混合料时很难保证达到佳含水量,也不能保证拌合混合料的均匀度,造成碾压不实,出现干湿“弹簧”现象,不能满足施工要求而造成返工。
(3) When mixing the mixture with grader, it is difficult to ensure the good water content and the evenness of the mixture, which causes the compaction not to be compacted and the phenomenon of dry and wet "spring", which cannot meet the construction requirements and causes rework.
(4)摊铺机摊铺水稳时若运输距离过远,在运输途中会大大散失水分,到现场后含水量不能达标,对这样的料源摊铺后在补水会增加施工时间,更会出现水分过多或过少现象造成碾压不实,出现“弹簧”,而水泥也可能失效,不能保证水稳层强度,影响路基质量。
(4) If the transportation distance of the paver is too far when paving the water stabilized layer, the water will be lost greatly during the transportation, and the water content will not reach the standard after arriving at the site. The construction time will be increased when the water is replenished after paving such material sources, and the phenomenon of too much or too little water will also occur, which will cause the compaction to be not solid, resulting in "spring", and the cement may also fail, which cannot guarantee the strength of the water stabilized layer, affecting the quality of the subgrade.
以上所讲事项,解决了施工中出现的问题并完善了施工工艺,保证公路基层施工质量,提高了施工效率,节约了施工成本,工期得到了保证。您对该设备有需求,就来联系我们https://www.sddhfjx.com吧!
The above mentioned matters have solved the problems that occurred during construction and improved the construction process, ensuring the quality of road base construction, improving construction efficiency, saving construction costs, and ensuring the construction period. If you have a need for this device, please contact us https://www.sddhfjx.com Come on!