Experimental device and test method for the effect of aggregate shape on the adhesion of asphalt to aggregate
A test device and adhesion technology, applied in measuring devices, using mechanical devices, analyzing materials, etc., can solve problems such as the influence of the adhesion between asphalt and aggregates, etc., and achieve good test stability and reasonable structure. , the effect of high test accuracy
Active Publication Date: 2015-12-23
CHANGAN UNIV
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Problems solved by technology
[0004] The above test can better test the mechanical adhesion between asphalt and aggregates, but the adhesion between asphalt and aggregates is not only related to the properties of asphalt itself, but also related to the surface shape of aggregates, and the above test methods are all The influence of the shape of the contact surface of aggregate particles on the adhesion of asphalt to aggregates is not involved
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Embodiment 1
[0025] exist figure 1 , 2 , 3, the aggregate shape of the present invention affects the test device of asphalt and aggregate adhesion by driving shaft 1, driven shaft 2, hydraulic cylinder 3, casing 4, torque sensor 5, motor 6, base plate 7, Base 8, programmable controller 9, computer 10, electromagnetic valve 13 are connected to form.
[0026] The upper surface of the base 8 is welded with a box body 4 along the outer edge. The base 8 is a regular hexagon. Chute a. Six driven shafts 2 are fixedly connected in the chute a with threaded fastening fittings, and the side of the driven shaft 2 facing the driving shaft 1 is fixed with a concave test piece 11 with a threaded fastening piece, and the concave test piece 11 The concave surface has 6 different shapes: large circle, small circle, obtuse triangle, sharp triangle, wide plane, and narrow plane. The center of the base 8 is fixed with a threaded fastening connector to install the motor 6, and the output shaft of the motor ...
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The invention discloses a device and a method for testing influence of aggregate shape on adhesion of asphalt and aggregate. A bottom plate and a box body are arranged on a base, a motor is arranged in the center of the base, six hydraulic oil cylinders are respectively arranged on the side wall of the box body, the bottom plate is a polygonal plate, six sliding grooves are processed on the upper surface of the bottom plate along directions of six corners, six driven shafts are respectively arranged in the six sliding grooves, a piston rod of each hydraulic oil cylinder is coupled with the side surface of one corresponding driven shaft, a concave surface test piece is arranged on the side surface of each driven shaft, an output shaft of the motor is arranged on the lower surface of a drive shaft, a torque sensor is arranged at one side of the lower surface of the drive shaft, and six convex surface test pieces are arranged on the side surface of the drive shaft, corresponding to the concave surface test pieces. The device is simple and convenient to operate, accurate in testing, simple in principle of the method, and high in automation degree.
Description
technical field [0001] The invention belongs to the technical field of test devices for asphalt and asphalt mixture in highway engineering, and in particular relates to a test device and a test method for the influence of aggregate shape on the adhesion between asphalt and aggregate. Background technique [0002] Highway asphalt pavement is made of asphalt and aggregates after mixing, paving, and rolling. The loose aggregate particles are bonded into an integral material through the adhesion ability of asphalt. The adhesion between asphalt and aggregate refers to the adhesion and anti-stripping performance of asphalt film on the aggregate surface. It is a very important technical index, which is directly related to the strength, stability and durability of asphalt mixture, and then affects Quality of asphalt pavement. In asphalt pavement, there should be good adhesion between asphalt and aggregate. [0003] In the currently implemented "Test Regulations for Asphalt and Asp...
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IPC IPC(8): G01N19/04
Inventor 张久鹏贺明明孙昌乐黎宇阳任仲山陆瑞国杜慧刘乙丁刘虎军张梦丽王凯裴建中李蕊
Owner CHANGAN UNIV