In-situ thermal-regenerative asphalt mixture gradation preparation method
A technology of asphalt mixture and recycled asphalt, which is applied in the direction of mixers, chemical instruments and methods, mixer accessories, etc., can solve the problems of wasting non-renewable resources of old asphalt mixture, occupying the stacking site, and increasing the cost of the project, and achieves the test method Simple and feasible, easy to realize, accurate and reliable test data
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[0017] Determine the target gradation of hot-in-place recycled asphalt mixture according to the use layer and design requirements; according to the test method for mineral material gradation of asphalt mixture stipulated in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011) ( T0725-2000) carry out gradation inspection on the recovered original asphalt pavement mixture; conduct disease investigation on the original pavement, and estimate the ratio of new materials to be added for hot-in-place regeneration, which is generally in the range of 15% to 30%, and the disease investigation should focus on Focusing on the rut investigation, the addition of new materials is to correct the original pavement asphalt mixture gradation, and the second is to fill the original pavement ruts; based on the original pavement asphalt mixture gradation determined in step 2 and the new material addition ratio determined in step 3, With the target grading det...
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