Method for controlling paving and segregation of asphalt macadam

Abstract

The invention relates to a method for controlling paving and segregation of asphalt macadam, and the method is applied in highway construction. The method comprises the following steps of: for mixture loading and transporting on site, jacking a vehicle sideboard at a position approaching to 45 degrees at a time when a vehicle pours the mixture into a receiving hopper of a paver, blanking the mixture evenly and intensively, fully filling a rear packing auger in time and ensuring that the mixture is 5-10cm higher than the auger when the mixture achieves at the two thirds position of the receiving hopper of the paver, starting the paver at a speed of 1-3m / min and maintaining the position of the auger to a mixture level position, maintaining the mixture in the receiving hopper not to be lower than one fourth when the vehicle completely discharges the mixture and drives away, strictly forbidding the hopper close, immediately performing the material receiving of a next vehicle, and performing hopper collection after the everyday construction is completed. Under the condition of not changing the paving equipment, the segregation phenomenon of the asphalt macadam in the paving process can be solved through scientific and reasonable flow arrangement and control so as to improve the integrity, slab entirety and load-carrying capability.

Description

technical field [0001] The invention relates to the field of highway engineering, in particular to a method for controlling segregation of asphalt macadam paving in highway construction. technical background [0002] Asphalt macadam is an asphalt mixture commonly used in the lower layer of expressways in recent years, and plays the role of stress between the transitional surface layer and the base layer. However, due to its large particle size and coarse mixture, the amount of asphalt is small. The uniformity and workability of the mixture itself are poor, and it is easy to cause segregation during construction, water penetration, uneven rolling results, and even loosening when the vehicle is driving. Contents of the invention [0003] The purpose of the present invention is to provide a method for controlling the segregation of asphalt macadam paving, which can solve the segregation of asphalt macadam in the paving process through scientific and reasonable flow arrangemen...

AI Technical Summary

Problems solved by technology

[0002] Asphalt macadam is an asphalt mixture commonly used in the lower layer of expressways in recent years, and plays the role of stress between the transitional surface layer and the base layer. However, due to its large particle size and coarse mixture, the amount of asphalt used is small. The uniformity and workability of the mixture itself are poor, and it is easy to cause segregation during construction, water penetration, uneven rolling results, and even loosening when the vehicle is driving.