US 12,282,037 B2
Automatic and rapid detection method of gradation for asphalt mixture and automatic detection device
Xue Gui, Xi'an (CN); Dengcheng Ma, Xi'an (CN); Zhang Gui, Xi'an (CN); Hanwan Jiang, Xi'an (CN); Xinyao Li, Xi'an (CN); Gang Fang, Xi'an (CN); Yunxiang Wang, Xi'an (CN); Zexin Liu, Xi'an (CN); Qunde Li, Xi'an (CN); Jinbo Liu, Xi'an (CN); Nian Feng, Xi'an (CN); Ruihua Zhao, Xi'an (CN); and Meng Liu, Xi'an (CN)
Assigned to Shaanxi Zhonglin Asphalt Pavement Maintenance Technology Co., Ltd, Xi'an (CN)
Filed by Shaanxi Zhonglin Asphalt Pavement Maintenance Technology Co., Ltd, Xi'an (CN)
Filed on Jan. 2, 2024, as Appl. No. 18/402,525.
Claims priority of application No. 202310121142.2 (CN), filed on Feb. 16, 2023; and application No. 202320225918.0 (CN), filed on Feb. 16, 2023.
Prior Publication US 2024/0280452 A1, Aug. 22, 2024
Int. Cl. G01N 5/00 (2006.01); G01N 1/40 (2006.01); G01N 1/44 (2006.01); G01N 33/42 (2006.01)
CPC G01N 5/00 (2013.01) [G01N 1/4022 (2013.01); G01N 1/4077 (2013.01); G01N 1/44 (2013.01); G01N 33/42 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An automatic detection method of a gradation for an asphalt mixture, comprising the following steps:
asphalt mixture introduction, comprising: introducing the asphalt mixture;
asphalt mixture dehydration, comprising: heating the asphalt mixture in a heating device to remove moisture in the asphalt mixture and dehydrating the asphalt mixture to a target dehydration rate, thereby obtaining a dehydrated asphalt mixture;
asphalt combustion, comprising: burning the dehydrated asphalt mixture in a combustion device by using a combustion method to form smoke configured to be removed, thereby obtaining aggregates after the asphalt combustion, and obtaining an asphalt content by using a weight difference of the dehydrated asphalt mixture before and after the asphalt combustion;
aggregate screening, comprising: grading through screening the aggregates obtained after the asphalt combustion according to different particle sizes of the aggregates by using a vibration screening device, and then weighing the aggregates with the different particle sizes, thereby obtaining weights of the aggregates with the different particle sizes; and
obtaining the gradation, comprising: calculating the gradation for the asphalt mixture according to the weights of the aggregates with the different particle sizes and the asphalt content.