Key material and construction method of waste aggregate cement soil mixing pile

The invention relates to a key material of a waste aggregate cement-soil mixing pile and a construction method, and the key material utilizes the hydration effect of main control materials including cement, metakaolin, quick lime, polycarboxylic acid, water glass and sodium carbonate and the framework effect of auxiliary materials including industrial wastes such as coarse fly ash and coarse water slag. It is ensured that the particle sizes of the auxiliary materials need to meet the proportion, so that the cement composite slurry has enough fluidity in the site construction process. The materials and soft soil are stirred, the strength of the solidified soil body can be guaranteed, meanwhile, the use amount of cement is reduced, the cost is greatly reduced, and huge engineering practical value is achieved. 本发明为一种废弃物骨料水泥土搅拌桩的关键材料和施工方法，该关键材料利用主控材料包括水泥、偏高岭土、生石灰、聚羧酸、水玻璃和碳酸钠的水化作用以及辅助材料包括粗粉煤灰、粗水渣等工业废弃物的骨架作用，确保辅助材料之间的粒径需要满足比例，才能使得现场施工过程中水泥复合浆液具有足够的流动性。本发明利用上述材料和软土进行搅拌，能够保证固化后的土体强度的同时，又减少了水泥的用量，大大降低了成本，具有巨大的工程实用价值。