Optimal asphalt-aggregate ratio design method of warm-mix asphalt mixture
A technology of warm mix asphalt and design method, applied in the field of asphalt, can solve the problems of complex design process and high price, and achieve the effect of low design cost and simple design process
Active Publication Date: 2019-11-12
SHENZHEN MUNICIPAL ENG
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[0009] The purpose of the present invention is to provide an optimal asphalt ratio design method for warm asphalt mixture, aiming to solve the problems in the prior art that the optimal asphalt ratio design method for warm asphalt mixture is expensive and the design process is complicated
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0031] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...
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The invention relates to the technical field of asphalt, and discloses an optimal asphalt-aggregate ratio design method of a warm-mix asphalt mixture. The method comprises the design steps: 1, moldingfive types of Marshall specimens by using the warm-mix asphalt mixture, wherein the asphalt-aggregate ratios of the five types of Marshall specimens are 4.0%, 4.5%, 5.0%, 5.5% and 6.0% respectively;2, obtaining performance indexes of the five types of the Marshall specimens; 3, taking the asphalt-aggregate ratios as an abscissa and the performance index of the Marshall specimens as an ordinate to form an asphalt-aggregate ratio performance coordinate graph; and 4, setting the target void ratio of the Marshall specimens to be 4%, and obtaining the optimal asphalt-aggregate ratio of the warm-mixed asphalt mixture according to an asphalt-aggregate ratio performance coordinate graph. According to the method, the asphalt-aggregate ratios and the performance index are utilized to form the asphalt-aggregate ratio performance coordinate graph, the target void ratio of the Marshall specimens is set to be 4%, and the optimal asphalt-aggregate ratio of the warm-mixed asphalt mixture is obtained, in this way, the whole design process is simple, and the design cost is low.
Description
technical field [0001] The patent of the present invention relates to the technical field of asphalt, in particular, relates to the design method of the optimal asphalt ratio of warm asphalt mixture. Background technique [0002] The asphalt ratio refers to the percentage of the mass ratio of asphalt to mineral aggregate in asphalt concrete, and it is one of the indicators of asphalt consumption. The amount of asphalt-stone ratio directly affects the quality of the pavement. If the asphalt-stone ratio is large, the pavement is prone to oil flooding. Otherwise, it will affect the strength and waterproof effect. In short, the asphalt ratio is the content of asphalt. Commonly used oil-stone ratio detection methods have problems such as time-consuming and labor-intensive, low precision, environmental pollution and human health hazards. [0003] At present, there are mainly three design methods for the optimal asphalt ratio of warm mix asphalt mixture: Marshall test design meth...
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Login to View More IPC IPC(8): E01C19/08E01C19/10
CPCE01C19/08E01C19/1072Y02A30/30
Inventor 张建同刘铁军黄嘉伟林璇姚雄文钟原
Owner SHENZHEN MUNICIPAL ENG