建筑垃圾再生填料路基施工工艺与优化

Construction Technology and Optimization of Construction Waste Recycling Filler Subgrade

摘要: 为了对建筑垃圾再生填料路基施工工艺进行研究，通过室内试验和现场试验段，确定最优废旧混凝土块与废旧砖块的掺配比例，并压实工艺进行优化，得到以下结论：当废旧混凝土和废旧砖块的比例为70:30时，CBR值达到最大，其工程力学性质最佳。当碾压层厚度为20 cm时，存在过度碾压现象并产生颗粒破碎，碾压遍数不宜超过4遍；当碾压层厚度为30 cm时，最佳碾压遍数宜为6遍；当碾压层厚度为40 cm时，层底压实不充分、层顶过振破碎，不宜进行路基施工。

Abstract: In order to study the construction technology of recycled aggregate roadbed from construction waste, the optimal mixing ratio of waste concrete blocks and waste bricks was determined through laboratory test and field test, and the compaction process was optimized. The following conclusion was obtained: when the ratio of waste concrete and waste bricks was 70:30, the CBR value reaches maximum, indicating the best engineering properties. When the thickness of the compaction layer is 20 cm, excessive compaction may cause particle breakage, and the number of compaction passes should not exceed 4; When the thickness of the compaction layer is 30 cm, the optimal number of compaction passes should be 6; When the thickness of the compacted layer is 40 cm, with insufficient compaction at the bottom of the layer, excessive vibration and breakage at the top of the layer, it is not suitable to carry out roadbed construction.