Cold recycled asphalt mixture mix proportion design method based on orthogonal test-Bailey method

• Main Authors: WU CHAOYUE, MENG QINGLING, GUAN JIAN, FU CHENGXI, WANG HAILIANG, GONG JIAN, ZHU HAIQING, FANG NAREN, ZHOU YAN, LIU XIAOLAN, GUO XIAOYU, GU JIANFENG, WANG XUANCANG, HU SHIQING, WANG JIAN, LI MEIDONG, PENG QUANMIN, DONG PENG, GUO HONGMEI, YE HONGYU
• Format: Patent
• Language: Chinese; English
• Published: 20.07.2021
• Subjects: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS

The invention relates to a cold recycled asphalt mixture mix proportion design method based on an orthogonal test-Bailey method, which comprises the following steps: sampling an existing pavement to obtain a recycled asphalt pavement material called RAP; detecting the water content of the RAP based on the RAP obtained by sampling; for the RAP with the moisture content meeting the requirement, grading aggregates in the RAP through a screening test; preliminarily completing grading design; screening the RAP by adopting an extraction method, and determining a nominal maximum particle size and key sieve pores; 4, the grading design in the step 4 is optimized in combination with the Bailey method, key sieve pore parameters CA, Fac and Faf are calculated according to grading optimized through the Bailey method, and the accuracy of the optimized grading is verified; and an orthogonal test method is adopted to determine the optimal emulsified asphalt use amount and the water addition amount. 本发明涉及一种基于正交试验-贝雷法的冷再生沥青混合