在回访中,多次发现台阶裂缝下沉,严重者需返工,造成大量材料及人工浪费。经与混凝土道路比较,混凝土道路承受荷载较大,而出现裂缝较少,发现道路下部的稳定层对防止裂缝起了重要作用。稳定层所用材料为贫水泥混凝土,即级配相对合理的戈壁土拌和4%的水泥,浇水湿润,辗压密实。在以 During the visit, many times, we found that the cracks in the steps had subsided. In severe cases, we had to rework and caused a lot of materials and labor waste. Compared with the concrete road, the concrete road has a higher load and less cracks, and it is found that the stability layer at the lower part of the road plays an important role in preventing the crack. Stabilized layer of material used for the poor cement, that is, the grading of relatively reasonable Gobi soil mixing 4% of the cement, watering wet, rolling compaction. In