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Snowmelt long-term efficacy testing method of snowmelt asphalt mixture

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

Active Publication Date: 2014-12-24
BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP +1
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  • Abstract
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  • Claims
  • Application Information

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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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  • Snowmelt long-term efficacy testing method of snowmelt 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 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 mixture is use...

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Abstract

The invention relates to a snowmelt long-term efficacy testing method of a snowmelt asphalt mixture. The method comprises the steps of using a snowmelt asphalt mixture as an experimental group, using a common snowmelt asphalt mixture without a snowmelt additive as a blank group, using the snowmelt additive as a reference group in an experiment, respectively putting the mixtures and the additive into water, testing electrical conductivity at regular time intervals, performing calculation to obtain the snowmelt long-term efficacy time of the snowmelt asphalt mixture when the electrical conductivity in the snowmelt additive reaches a maximum value. By means of the snowmelt long-term efficacy testing method of the snowmelt asphalt mixture, test data are accurate and reliable, the timeliness of ice and snow melting effect on the snowmelt asphalt road surface in actual engineering can be predicted through an indoor test, and the testing method is used for indoor evaluation on snowmelt long-term efficacy of the snowmelt asphalt mixture.

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 Applications(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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