回填材料筛选:4 个避免用建筑垃圾的标准问题

2025-09-26

在塑料管道施工过程中,回填材料的选择直接关系到管道的稳定性和使用寿命。而建筑垃圾,看似“废物利用”,实则可能暗藏隐患。以下是4个避免使用建筑垃圾作为回填材料的标准问题。

首先是颗粒大小问题。建筑垃圾往往颗粒大小不一,较大的块状物可能在回填过程中对塑料管道造成物理损伤,比如刮擦管道表面,影响其防腐性能。而且,不均匀的颗粒分布会导致回填层密实度难以保证,后期容易出现沉降。

其次是化学成分问题。建筑垃圾中可能含有各种化学物质,像残留的水泥中的碱性物质,若与塑料管道长期接触,可能会发生化学反应,侵蚀管道,缩短其使用寿命。

再者是杂质含量问题。建筑垃圾里可能混杂着各种杂质,如金属碎片、玻璃渣等。金属碎片可能会在土壤环境中生锈,体积膨胀,对管道产生挤压;玻璃渣则尖锐锋利,容易划破管道。

最后是密实度问题。建筑垃圾由于其自身特性,很难达到理想的密实度要求。密实度不足会使管道在承受地面压力时缺乏足够支撑,增加管道损坏的风险。所以,在塑料管道施工的回填材料筛选时,一定要严格遵循这些标准,避免使用建筑垃圾,选择合适的、符合要求的回填材料,以确保塑料管道工程的质量和安全。



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