Determination method of construction compaction temperature of rock asphalt dry process
A technology of compaction temperature and dry process, applied in the application of thermometers, thermometers, instruments, etc., can solve the problems of reducing the compaction effect and low compaction temperature, and achieve the goal of improving the quality of asphalt pavement and improving the compaction effect of the road surface Effect
Inactive Publication Date: 2017-12-26
HUNAN ZHONGDA CONSTR ENG TESTING TECH
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However, in the process of dry process construction, there are also certain differences in the time required according to the difference in transportation distance and the difference in on-site construction capacity. In non-special cases, from mixing to transportation, paving, and rolling of the mixture, The required time is about 2 hours. During this period, the asphalt components in the rock asphalt will be partially dissolved in the matrix asphalt of the asphalt mixture, so that the asphalt mixture also has a certain degree of rock asphalt modification; because The content of asphaltene in rock asphalt is relatively high. After mixing with base asphalt, it can significantly increase the stiffness and compaction temperature of asphalt mixture, and the compaction temperature of base asphalt in site construction is relatively low. If only according to the base asphalt Compaction standards for pavement compaction will reduce the compaction effect
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] A method for determining the compaction temperature in the construction of the rock asphalt dry process mainly includes the method for determining the construction compaction temperature during the construction of the rock asphalt dry process through experiments. The method mainly includes two parts, that is, in the modified asphalt When the content of rock asphalt is less than 30%, it can be determined by directly testing the amount of rock asphalt in construction; The compaction temperature curve in the state of low asphalt content is used to estimate the construction compaction temperature.
[0025] The following takes A-70 asphalt as an example to illustrate the detailed steps of determining the compaction temperature of modified asphalt in the actual construction process.
[0026] A. In actual construction, when the actua...
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The invention discloses a method for determining the compaction temperature of rock asphalt dry process construction, which mainly includes the method for determining the construction compaction temperature of rock asphalt dry process construction through experiments, and the method mainly includes two parts, that is, improving When the content of rock asphalt in permanent asphalt is less than 30%, it can be determined by directly testing the amount of rock asphalt in construction. When the actual content is higher than 30%, considering the influence of minerals contained in rock asphalt The construction compaction temperature can be estimated according to the law of compaction temperature in the state of low content of rock asphalt. The invention can scientifically determine the compaction temperature of rock asphalt dry process construction, provide an effective scientific basis for the confirmation of on-site construction compaction temperature, further improve the road surface compaction effect, and improve the asphalt pavement of rock asphalt dry process construction quality.
Description
technical field [0001] The invention relates to the technical field of road surface construction, in particular to a method for determining temperature parameters in the construction process of rock asphalt dry process. Background technique [0002] The asphalt used in road engineering mainly includes Xinjiang rock asphalt, Qingchuan rock asphalt, Indonesian rock asphalt, Iranian rock asphalt and North American rock asphalt. Rock asphalt is an asphalt-like substance produced by petroleum in the cracks of rocks through the comprehensive action of nature. It is composed of asphalt and minerals. The asphalt components in rock asphalt can dissolve in asphalt under high temperature conditions. This material has been developed and applied to asphalt roads In engineering, it is used to improve the performance of pavement. [0003] The construction technology of rock asphalt is mainly divided into wet process and dry process. The wet process is a process in which natural asphalt a...
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IPC IPC(8): G01K13/00G01N11/00
CPCG01K13/00G01N11/00
Inventor 宋小金樊亮杨博
Owner HUNAN ZHONGDA CONSTR ENG TESTING TECH