Fe-based shape memory alloy wire mesh asphalt pavement and preparation method thereof
A memory alloy and asphalt pavement technology, which is applied to roads, roads, and pavements paved with prefabricated blocks, can solve traffic safety accidents, resource waste, cracks, etc., and achieve convenient on-site construction, low price, and shape recovery powerful effect
Pending Publication Date: 2019-03-08
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
[0002] Due to the long-term vibration load and the influence of natural weathering on the highway, cracks will appear after a period of use, resulting in traffic safety accidents
Resurfacing roads is not only costly and takes a long time, but also causes a lot of waste of resources
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Embodiment 1
[0025] A kind of Fe-based shape memory alloy wire mesh intelligent asphalt pavement, the structure analysis diagram is as follows figure 1 As shown, it includes two layers of Fe-based shape memory alloy wire mesh layer 2 and three layers of asphalt mixture layer 1. The Fe-based shape memory alloy wire mesh layer and the asphalt mixture layer are alternately arranged, and the thickness of the single-layer asphalt mixture layer is 5cm , The wire mesh is composed of Fe-based shape memory alloy with a diameter of 0.15mm and a length of 25cm. The schematic diagram of the Fe-based shape memory alloy wire mesh is as follows figure 2 As shown, the wire mesh is a square mesh structure with a spacing of 3 cm. The asphalt mixture is densely mixed with asphalt concrete, and the maximum aggregate particle size is 13 mm (AC-13).
[0026] The preparation method of the Fe-based shape memory alloy wire mesh intelligent asphalt pavement includes the following steps:
[0027] Take the asphalt mixtur...
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Abstract
The invention provides a Fe-based shape memory alloy wire mesh asphalt pavement and a preparation method thereof. The pavement comprises asphalt mixture layers and a Fe-based shape memory alloy wire mesh layer, wherein the asphalt mixture layers and the Fe-based shape memory alloy wire mesh layer are alternately arranged; an upper surface and a lower surface are the asphalt mixture layers, and thethickness of each layer is 3 to 7 cm. The method comprises the following steps: taking an asphalt mixture and paving a first-layer asphalt mixture layer; paving a first-layer Fe-based shape memory alloy wire mesh layer on the first-layer asphalt mixture layer; then paving a second-layer asphalt mixture layer; alternately paving the asphalt mixture layers and the shape memory alloy wire mesh layerto form a mixture layer, wherein the asphalt mixture layer is arranged on the uppermost layer; vibrating, pressing and molding the mixture layer and carrying out heat preservation and cooling to obtain a asphalt pavement. According to the Fe-based shape memory alloy wire mesh asphalt pavement, a deformation recovery function of a shape memory alloy material is utilized to realize the effect of automatically repairing pavement cracks; raw materials are cheap and easy to obtain, are easy to process and have a good shape memory effect and strong shape recovery force.
Description
Technical field: [0001] The invention belongs to the technical field of intelligent asphalt pavement, and specifically relates to an intelligent asphalt pavement, in particular to an Fe-based shape memory alloy wire mesh asphalt pavement and a preparation method thereof. Background technique: [0002] Due to the long-term vibration load and the influence of natural weathering on the highway, cracks will appear after a period of use, leading to traffic safety accidents. Re-paved roads are not only costly and long construction period, but also caused a great waste of resources. The development of intelligent roads with self-repairing functions is of great significance for saving costs and improving road maintenance efficiency. [0003] For structural damage and cracks, shape memory alloys can be used for repair. Shape memory alloy is a new type of smart metal material, which realizes superelasticity or shape memory effect and deformation recovery function through reversible thermoe...
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IPC IPC(8): E01C5/22B29C67/24
CPCE01C5/22B29C67/24
Inventor 王伟郭兴野
Owner SHENYANG JIANZHU UNIVERSITY