Method for determining optimal construction temperature in modified asphalt at different contents of modifier

A method for determining an optimal construction temperature of modified asphalt at different contents of a modifier, comprising the following steps:

• S1:
• preparing modified asphalt samples with the different contents of the modifier and measuring a viscosity of the modified asphalt samples at different temperatures Tn, where n is a positive integer;
• S2:
• at temperature T1, plotting a curve with a modifier content as x-coordinate and the viscosity of the modified asphalt samples as y-coordinate;
• determining a transition point OT1 on the curve where the viscosity changes abruptly with the modifier content;
• S3:
• taking an x-coordinate value corresponding to the transition point OT1 as a modifier content CT1, taking the temperature T1 as the optimal construction temperature of the modified asphalt corresponding to the modifier content CT1 of the transition point OT1;
• and
• S4:
• obtaining transition points OTn at the different temperatures Tn through testing, establishing relationships between modifier contents CTn and optimal construction temperatures Tn, and determining the optimal construction temperature of the modified asphalt at a specific content of the modified asphalt during actual construction.