Optimal asphalt ratio design method for warm mix asphalt mixture
A technology of warm mix asphalt and oil-stone ratio, applied in the field of asphalt, can solve the problems of high price and complicated design process, and achieve the effect of low design cost and simple design process
Active Publication Date: 2022-06-03
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 objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0030] The implementation of the present invention will be described in detail below with reference to specific embodiments.
[0031] The same or similar numbers in the drawings of this embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present inventio...
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The invention relates to the technical field of asphalt, and discloses a method for designing the optimal asphalt ratio of a warm asphalt mixture, including the following design steps: 1), using the warm asphalt mixture to form five types of Marshall test pieces, and five types of Marshall test pieces The oil-stone ratio is 4.0%, 4.5%, 5.0%, 5.5%, and 6.0% respectively; 2), the performance indexes of five Marshall test pieces are obtained; 3), with the oil-stone ratio as the abscissa, the performance index of the Marshall test piece is vertical coordinates to form the asphalt ratio performance coordinate diagram; 4), set the target porosity of the Marshall test piece to 4%, and obtain the best asphalt ratio of warm asphalt mixture according to the asphalt ratio performance coordinate diagram; use the asphalt ratio and performance index The asphalt ratio performance index coordinate diagram is formed, and the target void ratio of the Marshall test piece is set to 4%, so as to obtain the optimal asphalt ratio of warm asphalt mixture. 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, to a method for designing the optimal oil-to-stone ratio for warm mix asphalt. Background technique [0002] The oil-stone ratio refers to the percentage of the mass ratio of asphalt to ore in asphalt concrete, which is one of the indicators of asphalt consumption. The amount of whetstone ratio directly affects the quality of the road surface. If the whetstone ratio is large, the road surface is prone to oil flooding, and vice versa, it affects the strength and waterproofing effect. Simply put, the oil-to-stone ratio is the bitumen content. The commonly used oil-to-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 three main design methods for the optimal oil-stone ratio of warm mix asphalt mixture: Marshall design method, Sup...
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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