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Non-Newtonian material pavement deceleration strip adopting sintered muck and preparation method

A non-Newtonian, bulk material technology, applied in the direction of roads, roads, manufacturing tools, etc., can solve the problems of noise speed bumps, excessive speed reduction table area, low non-Newton body strength, etc., to improve the compressive strength and tensile strength. Strength, high economical and environmental benefits

Active Publication Date: 2022-04-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem that the deceleration hill decelerates the vehicle too quickly in the deceleration belt, which causes noise and affects the vehicle and the deceleration belt itself, and the area of ​​the deceleration table is too large, a differential deceleration is needed to reduce the speed of the vehicle according to its speed. Noise and Vibration Methods in
The characteristics of non-Newtonian body's sensitivity to strain rate can be used for differential deceleration of vehicles, but the strength of non-Newtonian body is low, so it needs to be combined with other materials to configure composite materials that meet the requirements of speed bumps

Method used

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  • Non-Newtonian material pavement deceleration strip adopting sintered muck and preparation method
  • Non-Newtonian material pavement deceleration strip adopting sintered muck and preparation method
  • Non-Newtonian material pavement deceleration strip adopting sintered muck and preparation method

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preparation example Construction

[0034] A non-Newtonian material pavement speed bump using sintered slag, the preparation method of which comprises the following steps:

[0035] 1) mixing nano-silica and polyethylene glycol solution with a particle size of 10000-15000 meshes in a mass ratio (1-2): 5, and ultrasonically dispersing to obtain a non-Newtonian material;

[0036] Wherein, in the polyethylene glycol solution, the polyethylene glycol is PEG 200 with a molecular weight of 200 or PEG400 with a molecular weight of 400, and the mass concentration is not less than 90%; during the ultrasonic dispersion process, the ultrasonic power is 100-300W, and the ultrasonic frequency is 20-50kHz;

[0037] 2) Sinter the slag with a moisture content of 10-15wt% and a quartz content of not less than 6% at 850-1050°C for 0.5-1.5h, crush and sieve to obtain sintered slag with a particle size of 0.5-1mm ;

[0038] 3) mixing non-Newtonian material with reinforcing fiber and sintered slag to obtain reinforced non-Newtonian...

Embodiment 1

[0045] Such as figure 1 A non-Newtonian material pavement deceleration belt using sintered slag is shown, consisting of an elastic shell 1, a reinforced non-Newtonian content 2 arranged in the elastic shell 1, and a reinforced non-Newtonian body that runs through the elastic shell 1 and the reinforced non-Newtonian The body contents are fixed by 3 bolts. Among them, the elastic shell 1 is composed of an arc-shaped top surface and a bottom surface. The material used is CR122 neoprene rubber. The width of the speed bump is 50cm, and the height is 10cm. is 4mm.

[0046] The material used to reinforce the non-Newtonian content 2 is prepared by the following method:

[0047] 1) Mix 10000-15000 mesh nano-silica with 95wt% PEG 200 solution (average molecular weight 200), and place in an ultrasonic disperser for ultrasonic dispersion, ultrasonic 60min, power 200W, ultrasonic frequency 40kHz, to obtain non-Newtonian Bulk material; Wherein the nano silicon dioxide consumption is 35wt...

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Abstract

The invention relates to a non-Newtonian material pavement deceleration strip adopting sintered muck and a preparation method thereof, and the preparation method comprises the following steps: firstly, mixing nano silicon dioxide with a polyethylene glycol solution to obtain a non-Newtonian material; mixing the non-Newtonian fluid with reinforced fibers and sintered muck to obtain a reinforced non-Newtonian fluid content; and finally, adding the mixture into an elastic shell to obtain the non-Newtonian fluid material pavement speed bump. Compared with the prior art, the non-Newtonian fluid road surface deceleration strip is composed of the rubber shell and the fiber shear thickening liquid composite material filled in the rubber shell, by means of the thickening effect of the shear thickening liquid under the impact load, when an automobile passes through the deceleration strip, necessary deceleration is guaranteed, and the comfort of the automobile in the running process is kept; the method is expected to be widely applied to road engineering.

Description

technical field [0001] The invention belongs to the technical field of building structures, and relates to a non-Newtonian material pavement deceleration strip using sintered slag and a preparation method thereof. Background technique [0002] The speed bump is a device installed in densely populated intersections, residential areas, schools and other areas to slow down vehicles to prevent traffic accidents. There are two kinds of deceleration belt deceleration hill and deceleration platform. The speed bump is a raised area with the same width as the street. The speed bump can effectively reduce the speed of the vehicle, but it will generate noise when the vehicle passes by, and the long-term use of the plate will also cause it to fall off, which will increase the maintenance cost of the road. The deceleration platform is an elongated form of the deceleration hill. The surface is a platform. Compared with the deceleration hill, the deceleration of the vehicle is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F9/529C04B26/10B28B19/00
CPCY02W30/91
Inventor 李坛肖建庄
Owner TONGJI UNIV