Research on the Technology of Determining the Optimal Regenerant Dosage Based on the Concept of Balanced Design Method
In this paper,the balance design method is applied to determine the optimal regenerant dosage so as to ascertain more suitable and optimal recycled asphalt,and to expand the application of the balance design method and the overall performance of the recycled asphalt.The rheological performance is used as the index to determine the optimal regenerant dosage,the rutting factor to determine the upper limit,the S value and the m value to determine the lower limit,and the optimal regenerant dosage is comprehensively determined within this range.The conventional asphalt test,infrared spectroscopy and other tests are further to carried out to verify the performance.The results show that:the conventional asphalt indexes of the recycled asphalt determined by the balance design method meet the requirements of the specification;the infrared spectrum test shows that the asphalt components of the recycled asphalt are similar to the new asphalt,and the scanning electron microscope(SEM)test shows that the rheological properties of the recycled asphalt are significantly improved.In conclusion,the concept of the balanced design method can be applied to the determination of the dosage of the regenerant,and the performance of the recycled asphalt can meet the service standard of the new asphalt.
asphalt regenerantdosage of regenerantbalance design methodperformance balancemicroscopic test
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