城市道路旧沥青路面铣刨料冷再生利用技术研究

Study use of the city road pavement RAP for cold regeneration

研究了不掺加新集料情况下二灰和三灰冷再生RAP混合料的劈裂强度、回弹模量、水稳定性和冻稳定性;试验可知三灰冷再生RAP混合料的强度和增长率均比二灰冷再生RAP混合料大;二灰冷再生的强度、刚度值在早期龄期较小,后期的增长率较大;三灰冷再生的早期强度、刚度值较大,后期的增长率也比较大;两种冷再生RAP混合料都具有较好的水稳性和抗冻稳定性。

The study does not participate in the aggregate under the condition of two ash and three ash cold regeneration of RAP mixture splitting strength,modulus of resilience,water stability and frozen stability;experiment three ash cold regeneration of RAP mixture strength and growth rate are higher than two RAP mixture of high ash cold regeneration;two ash cold regeneration intensity,stiffness values were smaller in early age,late growth rate is relatively large;the early strength of three ash cold regeneration,stiffness value is larger,late growth rate is also relatively large;two kinds of cold recycled RAP mixture has better water stability and anti freezing stability.