Laboratory fiber asphalt macadam seal layer synchronous spreading device

Abstract

The invention discloses a laboratory fiber asphalt macadam seal layer synchronous spreading device. Two slide rails are parallelly arranged on a base, and a specimen bearing part for placement of a to-be-tested wheel rut plate specimen is arranged in slide grooves on two sides of the slide rails and capable of sliding in the slide grooves. In a fiber asphalt macadam spreading process, a mode of fixing a spreading tank and moving the wheel rut plate at a constant speed is adopted to realize the fiber asphalt macadam spreading process; in addition, trolley moving speed and discharging port sizecan be changed to comprehensively adjust spreading quantity, and spreading equipment is low in fluctuation in the spreading process. The laboratory fiber asphalt macadam seal layer synchronous spreading device has advantages that indoor simulation of the fiber asphalt macadam pavement process can be realized while pavement simulation of other interlayer structures of asphalt pavements can be realized as well; further, convenience and quickness in operation and accuracy in control of material spreading quantity are realized, the fiber asphalt macadam seal layer pavement process can be completedquickly and accurately, operating efficiency and test data accuracy are improved, and manpower, resources and time are remarkably saved.

Description

technical field [0001] The invention belongs to the field of fiber asphalt macadam seal layer spreading equipment, in particular to a laboratory fiber asphalt macadam seal layer synchronous sprinkling device. Background technique [0002] In order to make the multi-layer composite system of high-grade highway pavement have better structural bearing capacity and durability, interlayer treatment technology of asphalt pavement has attracted widespread attention. As a new type of interlayer treatment technology, the fiber asphalt gravel seal layer is added with glass fiber reinforced materials, which greatly improves the crack resistance and fatigue performance of the pavement. At present, it has been widely used in the upper sealing layer, lower sealing layer and stress absorbing layer of high-grade highways all over the country. Indoor research on fibrous asphalt macadam seals has also attracted more and more attention from scientific researchers. [0003] However, the exist...

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Problems solved by technology

[0003] However, the existing fiber asphalt macadam seal layer spraying device can only be applied to the paving of actual roads. The development and research of the fiber asphalt macadam synchronous spraying device in the laboratory is still in a blank stage. The method of spreading fiber, asphalt and gravel simulates the application in actual engineering. This method not only has complicated steps and is inconvenient to operate, but also has great errors due to manual operation, low test efficiency and poor effect, which greatly limits the indoor fiber quality. Related research on bituminous gravel asphalt seal

In addition, most of the existing fibrous asphalt macadam seal spraying vehicles can only use emulsified asphalt with good fluidity and no need for heating for spreading, resulting in less asphalt content in one spraying, and the strength of the asphalt bonding layer is difficult. Improvement and other issues

Hot asphalt such as SBS modified asphalt, rubber asphalt and other bonding layers have high strength, but due to the phenomenon of hot mist evaporation in actual engineering, the evaporated oil mist and asphalt residue block the fiber spraying device and disturb the normal spraying of fibers , limiting the popularization and application of hot asphalt in fibrous asphalt gravel seal

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