Asphalt volume expansion and shrinkage coefficient determinator and method

A technology of shrinkage coefficient and volume expansion, applied in the direction of material thermal expansion coefficient, etc., can solve problems such as difficulty in ensuring the accuracy of measurement results, and achieve the effects of improving road performance and durability, improving reliability and accuracy, and convenient operation

Active Publication Date: 2013-09-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that existing equipment measures asphalt expansion and contraction coefficient due to the influence of asphalt adhesion and creep, it is diffi

Method used

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  • Asphalt volume expansion and shrinkage coefficient determinator and method
  • Asphalt volume expansion and shrinkage coefficient determinator and method
  • Asphalt volume expansion and shrinkage coefficient determinator and method

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, the asphalt volumetric expansion and contraction coefficient measuring instrument of this embodiment comprises a top cover 1, a base 2 and a glass tube 3, and the glass tube 3 is a glass tube with openings at both ends and marked with a volume scale, and the top cover 1 One end surface is processed with a first groove 1-1, and the other end surface of the top cover 1 is processed with a through hole 1-2 connected with the first groove 1-1. The base 2 includes a connecting body 2-1 and a bottom plate 2- 2 Connecting body 2-1 is a cylinder, one end surface of connecting body 2-1 is set on the bottom plate 2-2 and the two are integrated, and the middle part of the other end surface of connecting body 2-1 is processed with a second groove 2 -3, the connecting body 2-1 is inserted into the first groove 1-1 and the two are detachably connected, the upper end surface of the connecting bod...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination Figure 1 ~ Figure 3 To illustrate this embodiment, the top cover 1 in this embodiment is a cylinder or a regular quadrangular prism. With such arrangement, the processing, manufacture and use are convenient, and the design requirements and actual needs are met. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 and Figure 4 To describe this embodiment, the connecting body 2-1 in this embodiment is a cylinder. With such arrangement, the processing, manufacture and use are convenient, and the design requirements and actual needs are met. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an asphalt volume expansion and shrinkage coefficient determinator and method, and relates to a volume expansion and shrinkage coefficient determinator and method of a material, in order to solve the problems that when an existing device determines the asphalt volume expansion and shrinkage coefficient, the determined result accuracy cannot be ensured because of the influences by asphalt adhesion and the creep property, and only the linear coefficient of asphalt can be determined. The asphalt volume expansion and shrinkage coefficient determinator comprises a top cover, a base and a glass tube, wherein the base comprises a connector and a base plate; the connector is inserted and installed in a first groove, and the connector and the first groove are detachably connected with each other; the upper end surface of the connector and the bottom surface of the first groove are sealed; and a second groove forms an enclosed chamber. The determining method mainly comprises the following steps of: step 1, assembling the determinator; step 2, determining the volume expansion or shrinkage coefficient of an indicator; step 3, manufacturing an asphalt test element and determining the volume of the asphalt test element; step 4, determining the volume expansion or shrinkage coefficient of the asphalt test element; and step 5, calculating the volume expansion or shrinkage coefficient of the asphalt test element. The asphalt volume expansion and shrinkage coefficient determinator and method provided by the invention are used for determining the asphalt volume expansion and shrinkage coefficient.

Description

technical field [0001] The invention relates to an instrument and method for measuring volume expansion and contraction coefficients of materials, in particular to an instrument and method for measuring volume expansion and contraction coefficients of asphalt materials. Background technique [0002] The high-temperature volume expansion coefficient and low-temperature volume contraction coefficient of asphalt refer to the relative volume change of asphalt when the temperature increases or decreases by 1 °C. The high-temperature volume expansion coefficient and low-temperature contraction coefficient of asphalt are important indicators for asphalt performance evaluation and directly affect the road performance and durability of asphalt pavement. If the high-temperature volume expansion coefficient of asphalt is too large, it is easy to cause defects such as rutting and choking on the asphalt pavement under high-temperature conditions. The temperature shrinkage coefficient of...

Claims

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Application Information

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IPC IPC(8): G01N25/16
Inventor 易军艳王东升曹一翔孙朝杰曹鹏唐浩荆儒鑫
Owner HARBIN INST OF TECH
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