Experimental method for snow-melting long-term effect of snow-melting asphalt mixture

A technology of asphalt mixture and test method, applied in the direction of material resistance, can solve the problem that there is no test method for evaluating the snow melting long-term effect of snow-melting asphalt mixture, and achieve the effect of accurate and reliable test data

Active Publication Date: 2017-06-16
BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP +1
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Problems solved by technology

[0004] The purpose of this invention is to provide a test method for evaluating the long-term effect of snow-melting asphalt mixture, which is simple and easy, and solves the problem that there is currently no test method for evaluating the long-term effect of snow-melting asphalt mixture

Method used

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  • Experimental method for snow-melting long-term effect of snow-melting asphalt mixture
  • Experimental method for snow-melting long-term effect of snow-melting asphalt mixture
  • Experimental method for snow-melting long-term effect of snow-melting asphalt mixture

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Embodiment 1

[0038] experimental method:

[0039] Step 1: Form a group of 4 cylindrical snow-melting asphalt mixture specimens with a height of 63.5±1.3mm and a diameter of 101.6mm by Marshall compaction method, and then use the same method and materials to form a group of 4 specimens without adding snow-melting additives ordinary asphalt mixture specimens. Numbering, snow melting asphalt mixture specimens are recorded as 1, 2, 3 and 4, common asphalt mixture specimens are recorded as 5, 6, 7 and 8, the specific test steps are as follows:

[0040] Step 1: Determine the water consumption, query the annual average rainfall in the area where the snowmelt asphalt mixture is used, denoted as h 1 , unit mm; calculate the volume V of a Marshall specimen 马 =π×D 2 ×h÷4 (the diameter of the bottom surface of the Marshall specimen is recorded as D, in mm, and the height is recorded as h, in mm); query the thickness of the upper layer of the road surface, recorded as h 2 (Snow-melting asphalt mixt...

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Abstract

The invention relates to a test method for the long-term effect of snow melting asphalt mixture. The method divides the experiment into three groups, the snow melting asphalt mixture is the experimental group, the ordinary asphalt mixture without snow melting additives is the blank group, and the snow melting additive is used As the reference group, they were put into water to measure the electrical conductivity at intervals, and when the electrical conductivity in the snow-melting additive group reached the maximum value, the long-term snow-melting time of snow-melting asphalt mixture was obtained by calculation. This test method for determining the long-term effect of snow-melting asphalt mixture, the test data is accurate and reliable, can predict the time effect of snow-melting asphalt pavement ice and snow melting effect in actual engineering through indoor tests, and provides a basis for indoor evaluation of the long-term snow-melting performance of snow-melting asphalt mixture test method.

Description

technical field [0001] The present invention is a test method for effectively evaluating the snow-melting long-acting performance of snow-melting asphalt mixture, especially a relatively easy solution to the method for evaluating the long-lasting snow-melting performance of snow-melting asphalt mixture, which belongs to the performance test of road pavement technology field. Background technique [0002] Snow icing on the road in winter will cause traffic inconvenience and even cause traffic accidents. For many years, countries have used chlorine salt deicing agents to melt road surface snow. Although good snow melting and deicing effects have been achieved, it has caused serious environmental pollution and Corrosion damage of road accessory structures. In recent years, road researchers have begun to devote themselves to the development of efficient and environmentally friendly active snow and ice removal technologies, and have developed various active snow and ice removal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/06
Inventor 柳浩杨丽英董雨明王建国李根王真李振李恩光王宝新
Owner BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP
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