Method for rapidly measuring SBS mixing amount of modified asphalt

The invention discloses a method for rapidly measuring the SBS mixing amount of modified asphalt. The method comprises the following steps: preparing a SBS modified asphalt sample, carrying out infrared spectral data tests, preprocessing infrared spectral images, choosing an optimal modeling band, establishing a prediction model, and using the prediction model. The modified asphalt infrared spectral data is obtained through infrared spectral tests, the prediction model is established under the assistance of a machine learning algorithm, the SBS mixing amount can be rapidly measured, the accuracy of prediction on the mixing amount of SBS asphalt modifier can be guaranteed, and the method can be widely used to measure the SBS mixing amount of modified asphalt in various projects.