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水泥灑布車是道路建設與養(yǎng)護工程中用于精準噴灑水泥材料的專用設備,通過機械系統(tǒng)將水泥干粉或水泥漿按設定量均勻灑布在路面,為基層穩(wěn)定、路基加固等施工環(huán)節(jié)提供關鍵支持,其高效性與精準性使其成為現(xiàn)代道路工程中的重要裝備。
Cement sprinkler truck is a specialized equipment used for precise spraying of cement materials in road construction and maintenance projects. Through a mechanical system, it evenly distributes cement powder or slurry in a set amount on the road surface, providing key support for construction processes such as base stability and roadbed reinforcement. Its efficiency and precision make it an important equipment in modern road engineering.
在路面基層施工中,水泥灑布車承擔著水泥穩(wěn)定層的材料鋪設任務。修建瀝青或水泥路面時,需先在路基上鋪設水泥穩(wěn)定碎石基層,此時水泥灑布車可將水泥干粉均勻灑布在碎石層表面,灑布量根據(jù)設計要求(通常為碎石重量的 3%-5%)精準控制,誤差不超過 ±0.5%。灑布完成后,經拌和設備攪拌,水泥與碎石、水充分反應,形成具有一定強度的穩(wěn)定層,7 天無側限抗壓強度可達 2-4MPa,為路面提供堅實基礎。相比人工撒布,機械灑布能避免水泥堆積或漏撒,確保穩(wěn)定層強度均勻,減少后期因局部強度不足產生的路面沉降。
In the construction of the road base layer, the cement sprinkler truck is responsible for laying the material for the cement stabilized layer. When constructing asphalt or cement pavement, it is necessary to first lay a cement stabilized crushed stone base layer on the roadbed. At this time, the cement distributor can evenly distribute the cement dry powder on the surface of the crushed stone layer, and the spraying amount is precisely controlled according to the design requirements (usually 3% -5% of the weight of the crushed stone), with an error not exceeding ± 0.5%. After the spraying is completed, the cement reacts fully with crushed stones and water through mixing equipment, forming a stable layer with a certain strength. The unconfined compressive strength can reach 2-4MPa after 7 days, providing a solid foundation for the road surface. Compared to manual spreading, mechanical spreading can avoid cement accumulation or leakage, ensure uniform strength of the stable layer, and reduce road settlement caused by insufficient local strength in the later stage.
路基加固工程中,水泥灑布車可實現(xiàn)就地固化處理。對于軟土地基或路基翻漿路段,需通過摻入水泥改善土壤特性,水泥灑布車能將水泥漿均勻噴灑在翻挖后的土壤表面,灑布寬度可根據(jù)施工路段調整(通常 3-6 米),確保每平方米土壤的水泥摻入量符合設計標準(如 5%-8%)。經拌和、碾壓后,水泥與土壤發(fā)生化學反應,形成板體結構,提高路基承載力,減少工后沉降。在鄉(xiāng)村道路拓寬工程中,這種就地固化工藝可利用原有土壤,減少外運棄土與新土進場,每公里可節(jié)省材料運輸成本 20% 以上。
In roadbed reinforcement projects, cement spraying trucks can achieve on-site solidification treatment. For sections with soft soil foundation or subgrade slurry, it is necessary to improve soil characteristics by adding cement. Cement sprinklers can evenly spray cement slurry on the excavated soil surface, and the spraying width can be adjusted according to the construction section (usually 3-6 meters) to ensure that the cement content per square meter of soil meets the design standards (such as 5% -8%). After mixing and rolling, cement reacts chemically with soil to form a slab structure, which improves the bearing capacity of the roadbed and reduces post construction settlement. In rural road widening projects, this in-situ solidification process can utilize existing soil, reduce the need for external transportation of abandoned soil and the entry of new soil, and save more than 20% of material transportation costs per kilometer.
路面養(yǎng)護中的局部修復是其另一重要應用。當瀝青路面出現(xiàn)松散、麻面等表層病害時,可先用銑刨機清除破損層,水泥灑布車隨后噴灑少量水泥漿(每平方米 0.5-1.0kg),浸潤基層表面,增強新鋪瀝青層與原基層的黏結力,防止出現(xiàn)層間剝離。在水泥路面裂縫修復中,對于寬度大于 5mm 的裂縫,可通過灑布車將水泥漿灌入裂縫,填充空隙后初凝,再進行后續(xù)密封處理,提升裂縫修復的耐久性。此外,在路面 “白改黑”(水泥路面改瀝青路面)工程中,灑布車噴灑的水泥凈漿能封閉原水泥路面的細微裂縫,阻斷地下水滲透路徑,保護基層穩(wěn)定。
Local repair in road maintenance is another important application. When there are surface defects such as looseness and roughness on the asphalt pavement, a milling machine can be used to remove the damaged layer first, and a cement sprayer can then spray a small amount of cement slurry (0.5-1.0kg per square meter) to wet the surface of the base layer, enhance the adhesion between the newly laid asphalt layer and the original base layer, and prevent interlayer peeling. In the repair of cracks on cement pavement, for cracks with a width greater than 5mm, cement slurry can be poured into the cracks by a sprinkler truck, filled in the gaps, and then initially set, followed by subsequent sealing treatment to improve the durability of crack repair. In addition, in the road surface "white to black" (cement road surface to asphalt road surface) project, the cement slurry sprayed by the sprinkler truck can seal the fine cracks of the original cement road surface, block the groundwater infiltration path, and protect the stability of the base layer.
特殊路面施工中展現(xiàn)靈活適配性。修建透水路面時,水泥灑布車可將低標號水泥漿按特定量灑布在透水骨料表面,形成強度適中的膠結層,既保證路面透水性,又滿足基本承載要求。在砂石路面升級為簡易硬化路面時,灑布車均勻噴灑水泥干粉后,配合灑水車補水拌和,經碾壓形成水泥穩(wěn)定砂石路面,適用于鄉(xiāng)村低交通量道路,每公里建設成本僅為瀝青路面的三分之一。對于臨時施工便道,灑布車快速灑布水泥并拌和碾壓,可在 24 小時內形成臨時硬化路面,滿足施工車輛通行需求,工程結束后還可破碎回收,減少對場地的永久占用。
Show flexibility and adaptability in the construction of special road surfaces. When constructing permeable pavements, cement sprinklers can spray low-grade cement slurry in a specific amount on the surface of permeable aggregates to form a moderately strong bonding layer, which ensures the permeability of the pavement and meets the basic bearing requirements. When upgrading a gravel road surface to a simple hardened road surface, the sprinkler truck evenly sprays cement dry powder, and then mixes it with the sprinkler truck to form a cement stabilized gravel road surface through rolling. It is suitable for low traffic volume rural roads, and the construction cost per kilometer is only one-third of that of asphalt roads. For temporary construction access roads, the sprinkler truck can quickly spread cement and mix and roll it, forming a temporarily hardened road surface within 24 hours to meet the traffic needs of construction vehicles. After the project is completed, it can also be broken and recycled to reduce permanent occupation of the site.
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