水泥处治旧沥青路面结构铣刨料填筑路床的试验研究

Experimental Research on Cement Treated Old Asphalt Pavement Structure Milling Materials Filling Roadbed

在旧沥青路面材料的再生利用中,为提高再生材料的强度和稳定性,一般都需加入一定量的稳定剂,其中水泥类稳定剂因较沥青类价格低廉、稳定效果显著等优点而有着广泛的应用。为提高旧沥青路面材料的综合利用率,通过对旧路面结构铣刨料添加不同剂量的水泥并进行回弹模量及无侧限抗压强度试验,确定了水泥处治旧沥青路面结构铣刨料填筑路床的最佳掺灰比。最后,通过对实际工程中路床弯沉值的测定,评价了水泥处治旧沥青路面材料填筑路床的路用性能。

For the recycling of old asphalt pavement materials,in order to improve the strength and stability of recycled materials,a certain amount of stabilizer should be added. Compared with the asphalt type stabilizer,the cement stabilizer has a wider application because of its low cost,remarkable stabilization effect and so on.To improve the comprehensive utilization ratio of old asphalt pavement materials,the cement was added to the old pavement structure milling materials, and the best mixing ratio of cement was determined for the application of milling materials filled roadbed through the laboratory test of modulus of resilience and unconfined compressive strength. At last,based on the measurement of roadbed deflection value in a practical engineering project,the pavement performance of the cement treated old asphalt pavement materials filling roadbed was evaluated.