An indoor test method considering the coupling effect of thermo-oxidative aging and water damage on the performance of ogfc under atmospheric pressure environment
A thermo-oxidative aging, indoor test technology, applied in the direction of material thermal analysis, material inspection products, instruments, etc., to achieve the effect of strong penetration and effective experimental methods
Active Publication Date: 2020-09-01
HOHAI UNIV
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[0005] In order to overcome the deficiencies of existing research methods, the present invention provides an indoor simulation device test method based on the consideration of the coupling effect of thermo-oxidative aging and water damage on OGFC performance under normal pressure, comprehensively considering the effects of thermo-oxidative aging and water damage on OGFC asphalt The function of the mixture is more in line with the actual environment of the asphalt mixture, and the experimental data has more reference value
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[0045] A kind of indoor test method that considers thermal oxygen aging and water damage coupling effect on OGFC performance under normal pressure environment, relies on a set of simulation device, and described simulation device is aimed at OGFC, and is in normal pressure environment inside and outside.
[0046] Such as Figure 1 to Figure 12 As shown, the simulation device includes a container body, a water temperature regulating device 10 on the container wall, a specimen rack placed in the container body cavity for placing the OGFC asphalt mixture specimen, a drip plate 5 arranged directly above the specimen rack, The water collecting plate 4 arranged at the lower part of the top cover of the container, the connecting rod float level switch 3 used to control the change of water level, the water inlet valve 1 used to control the water inlet, and the ambient temperature control box 11 are used to maintain the stability of the container structure 12 of the brackets.
[0047]...
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Abstract
The invention discloses an indoor experiment method with influence of a thermo-oxidative aging and water damage coupling effect on OGFC in a normal pressure environment taken into consideration. The method comprises steps as follows: preparation of an OGFC bituminous mixture test piece and coupling environment treatment of thermo-oxidative aging and water damage of the OGFC test piece in a simulation device. Compared with current research methods for simulating the environment where a bituminous mixture is located, the method has the advantages that as for the characteristics of high porosityand high permeation of the OGFC mixture, the influence of two factors, namely, thermo-oxidative aging and water damage under the normal pressure, including a single factor and the coupling effect on the OGFC bituminous mixture is considered, the environment where the bituminous mixture is located actually is better met, and the experiment method is more effective.
Description
technical field [0001] The invention belongs to the field of asphalt mixture test methods, in particular to an indoor simulation device test method that considers the influence of thermal oxygen aging and water damage coupling on OGFC performance under normal pressure. Background technique [0002] As an important infrastructure of sponge city, the performance of OGFC largely determines the success or failure of sponge city construction. In order to ensure that the OGFC pavement can have good road performance during the use stage, it is very important to accurately simulate the actual environment in which the OGFC is located and the research on its subsequent performance. [0003] Aging and water damage have always been hot spots and key words of research by scholars at home and abroad, and are the main criteria for testing whether all new technologies and materials for asphalt pavement are prioritized and applicable. Existing studies have shown that the presence of moistur...
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IPC IPC(8): G01N33/42G01N25/00
CPCG01N25/00G01N33/42
Inventor 吴建涛王宇焦岩伍洋杨帅
Owner HOHAI UNIV