Asphalt concrete deceleration strip material as well as preparation method and construction technology thereof

An asphalt concrete and speed bump technology, applied in the directions of roads, road signs, traffic signals, etc., can solve the problems of weakened deceleration effect, large bearing gravity, and high cost of use of cast steel speed bumps, and achieves good integrity, reasonable shape, and increased Effects of stability and toughness

Inactive Publication Date: 2016-02-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cast steel deceleration pads have strong wear resistance, large load-bearing gravity, no deformation, and their service life is about 6 times that of rubber deceleration pads. However, cast steel deceleration pads are expensive to use, and they will be pressed into the road after long-term use, and the deceleration effect will be weakened

Method used

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  • Asphalt concrete deceleration strip material as well as preparation method and construction technology thereof
  • Asphalt concrete deceleration strip material as well as preparation method and construction technology thereof
  • Asphalt concrete deceleration strip material as well as preparation method and construction technology thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0015] The preparation process of the asphalt concrete speed bump is as follows: add the above-mentioned weighed raw materials in the order of coarse aggregate → fine aggregate → mineral powder → anti-rutting agent → lignin fiber / polyester fiber → asphalt, and then follow the "Asphalt Pavement Construction Technical Specifications" for mixing to obtain the asphalt concrete speed bump.

[0016] The construction technology of the asphalt concrete speed bump is characterized in that it includes the following steps: 1) draw a line on the construction road section: use a line drawing tool to mark the place where construction needs to be done; 2) install the speed bump: first use a milling machine along the marked Mill the road surface to a set thickness, and use a grinder to smooth the milled road surface; remove residue and dust, and use emulsified asphalt to bond and install the prefabricated asphalt concrete speed bump; 3) Maintenance of speed bumps : Let it stand for 3-5 hours ...

Embodiment 1

[0018] An asphalt mixture-based energy-dissipating road stud and a preparation method thereof, which is composed of the following raw materials: 65kg of asphalt, 900kg of aggregate (including coarse aggregate and fine aggregate), 8kg of lignin fiber, 20kg of polyester fiber, Rutting agent 4kg, mineral powder 60kg. Among them, the asphalt is SBS modified asphalt, and Table 1 is the sieve distribution calculation table 1 of the aggregate.

[0019] Table 1

[0020]

[0021] The preparation process of the asphalt mixture-based energy-dissipating road stud is as follows:

[0022] Add the above-mentioned raw materials in the order of coarse aggregate → fine aggregate → mineral powder → anti-rutting agent → lignin fiber / polyester fiber → asphalt, and then mix according to the "Technical Specifications for Asphalt Pavement Construction". Specifically: control the temperature at 180-200°C, stir the weighed aggregate and mineral powder in the pot, then add the anti-rutting agent an...

Embodiment 2

[0027] An asphalt mixture-based energy-dissipating road stud and a preparation method thereof, which is composed of the following raw materials: 68kg of asphalt, 924kg of aggregate (including coarse aggregate and fine aggregate), 7kg of lignin fiber, 18kg of polyester fiber, Rutting agent 3.5kg, mineral powder 60kg. Among them, the asphalt is SBR modified asphalt, and Table 2 is the sieve distribution calculation table of mineral materials.

[0028] Table 2

[0029]

[0030] The preparation process of the asphalt mixture-based energy-dissipating road stud is as follows:

[0031] Add the above-mentioned raw materials in the order of coarse aggregate → fine aggregate → mineral powder → anti-rutting agent → lignin fiber / polyester fiber → asphalt, and then mix according to the "Technical Specifications for Asphalt Pavement Construction". Get said asphalt speed bumps.

[0032] The above-mentioned asphalt concrete material was then prepared as a Marshall test piece according t...

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Abstract

The invention relates to an asphalt concrete deceleration strip material as well as a preparation method and a construction technology thereof. The asphalt concrete deceleration strip material comprises the following components in percentage by weight: 2-4wt% of mixture of lignin fiber and polyester fiber, 85-90wt% of aggregate, 5-8wt% of mineral powder, 0.3-0.6wt% of an anti-rut agent and 2.7-6.5% of asphalt, wherein mass ratio of lignin fiber to polyester fiber is 1:(2-3), asphalt is one of SBS and SBR modified asphalt, and the mineral powder adopts limestone powder. The asphalt concrete deceleration strip material has the advantages that an asphalt deceleration strip made from the asphalt concrete deceleration strip material can realize forced deceleration and is reasonable in shape, no harm is done to a deceleration pavement and a vehicle, asphalt concrete material has good integrality with pavement, durable service is realized, a construction technology is simple, and cost is low; and the lignin fiber and the polyester fiber are doped into the deceleration strip material, so that stability and toughness of asphalt mixture are enhanced.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to an asphalt concrete speed bump material, a preparation method and a construction process thereof. Background technique [0002] With the development of transportation, the level of road construction in our country has been significantly improved, and the automobile industry is also developing rapidly, so the speed of driving has become faster and faster, and the problem of road traffic safety has become more and more serious. Therefore, it is necessary to effectively control the driving speed and reduce the traffic accident rate, which requires the installation of some mandatory deceleration facilities on the road to achieve the purpose of limiting the driving speed. [0003] Commonly used mandatory deceleration facilities are mainly speed bumps and vibration markings. Speed ​​bumps are suitable for schools, businesses, highway intersections and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26E01F9/529
Inventor 李相国徐朋辉刘卓霖王冠东杨蓉蒋文广
Owner WUHAN UNIV OF TECH
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