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针对大庆的粉煤灰性质及气候等条件 ,借鉴国内外先进经验进行了粉煤灰半刚性路面试验研究和改进。采取调整配合比和集料级配 ,以及在要求强度高的基层中用水泥代替石灰激发粉煤灰的方法 ,并改悬浮式结构为密实式结构 ,利用粉煤灰代替细骨料 ,提高了早期强度 ,减少了温度裂缝 ,逐渐形成了适应大庆地区高寒、大温差气候条件和地下水位高等地质条件 ,适应路面基层和垫层需要的粉煤灰半刚性路面。
Aimed at the conditions of the fly ash in Daqing and its climatic conditions, the semi-rigid fly ash test research and improvement are carried out based on the advanced experience both at home and abroad. To adjust the mix and aggregate gradation, as well as in the grass-roots demanding strength with lime instead of lime to stimulate the fly ash method and rerouting the floating structure for the compact structure, the use of fly ash instead of fine aggregate, increased Early strength, reduced temperature cracks, and gradually formed in the Daqing region alpine, large temperature and high groundwater table climatic conditions of geological conditions, to meet the needs of the pavement and mat layer of semi-rigid fly ash road.