Composite pavement layer-sealing method

A composite pavement and sealing technology, which is applied in the directions of roads, roads, and on-site coagulation pavements, can solve the problems that the maintenance method cannot be effectively solved and the diseases of the asphalt pavement are various, so as to avoid falling off and scattering, and achieve good smoothness. degree and stability, and the effect of delaying pavement cracks

Inactive Publication Date: 2017-12-01
陕西国琳建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is that the existing asphalt pavement has various diseases, and the existing maintenance methods cannot effectively solve the problem.

Method used

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  • Composite pavement layer-sealing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 Shown, a kind of composite pavement sealing method, comprises the following steps:

[0039] 1. Construction preparation

[0040] Carry out a detailed road condition investigation on the original pavement, and analyze the disease situation, and design the mix ratio of the composite seal layer in a targeted manner:

[0041] 1) Road condition survey, determine the construction plan, mechanical equipment combination, staffing;

[0042] 2) Close the traffic and set up warning signs for road construction;

[0043] 2) Keep the lower layer dry and clean;

[0044] 3) Make sure the asphalt, gravel and supporting equipment are ready;

[0045] 4) Repair cracks and potholes;

[0046] 5) The structures in the construction area should be protected to avoid contamination by splashing asphalt.

[0047] 2. SBR waterproof emulsified asphalt seal

[0048] Use an intelligent asphalt distributor to spray SBR emulsified asphalt, and the spraying amount of SBR emulsified a...

Embodiment 2

[0110] Others of this embodiment are the same as Embodiment 1, the difference is:

[0111] (1) In step (2), the spraying amount of SBR waterproof emulsified asphalt is 0.3~0.5kg / m 2 ; The SBR waterproof emulsified asphalt is slow-cracking and fast-setting type, and the raw materials are calculated in parts by weight, including 50 parts of base asphalt, 48 parts of water, 1 part of emulsifier, 3.5 parts of modifier and 1.5 parts of active catalyst. Among them, the emulsifier is a mixture of 0.23 parts of asbestos powder emulsifier and 0.77 parts of lignin emulsifier; the modifier is SBR latex, and its solid content is ≥ 60%; the active catalyst is potassium nitrate;

[0112] (2) In step (3), the spreading amount of fiber is 175g / m2 , the fiber uses a mixture of polypropylene fiber, polyethylene fiber and polypropylene fiber;

[0113] (3) In step (4), the spreading amount of SBR emulsified asphalt is 0.4kg / m 2 .

Embodiment 3

[0115] Others of this embodiment are the same as Embodiment 1, the difference is:

[0116] (1) In step (2), the spraying amount of SBR waterproof emulsified asphalt is 0.4~0.6kg / m 2 ; The SBR waterproof emulsified asphalt is slow-cracking and fast-setting type, and the raw materials are calculated in parts by weight, including 50 parts of base asphalt, 45 parts of water, 0.8 parts of emulsifier, 3.0 parts of modifier and 1.2 parts of active catalyst. Among them, the emulsifier is a mixture of 0.2 parts of asbestos powder emulsifier and 0.8 part of lignin emulsifier; the modifier is SBR latex, and its solid content is ≥ 60%; the active catalyst is potassium nitrate;

[0117] (2) In step (3), the spreading amount of fiber is 160g / m 2 , the fiber uses polyester fiber;

[0118] (3) In step (4), the spreading amount of SBR emulsified asphalt is 0.3kg / m 2 .

[0119] (4) In step (6), the mass fraction of the ore in the slurry mixture is ≥90%.

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Abstract

The invention provides a composite pavement layer-sealing method, and belongs to the technical field of highway pavement maintenance. The composite pavement layer-sealing method comprises the steps of construction preparing, SBR waterproof emulsified asphalt layer sealing, fiber spreading, SBR emulsified asphalt layer sealing, synchronous crushed stone layer sealing and micro surfacing. After treatment with the composite pavement layer-sealing method, pavement has good skid resistance and abrasion resistance, a net structure is formed by SBR emulsified asphalt with high viscosity, fiber and crushed stones, so that flowing of the asphalt is prevented effectively, high temperature stability is improved, the pavement is not flushing, load and abrasion can be effectively resisted at the same time, shear resistance and slip properties of the pavement is improved.

Description

technical field [0001] The invention relates to the technical field of highway pavement maintenance, in particular, a composite pavement sealing method is designed. Background technique [0002] With the continuous improvement of the road network, the mileage of my country's roads has exceeded 4.5 million, and with the long-term effects of the natural environment and traffic load on the roads, some roads have begun to appear diseases, which have a great impact on driving safety and comfort. . After the beginning of the "Eleventh Five-Year Plan", the Ministry of Transport promoted the preventive maintenance of roads nationwide. After a period of promotion and efforts, the preventive maintenance technology has become increasingly mature and achieved good results. However, there are still some defects in the existing preventive maintenance technology, which requires continuous technological innovation. [0003] Sealing is a very important part of new roads and road maintenance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C7/26E01C7/35C04B28/04
CPCE01C7/325C04B28/04E01C7/262E01C7/353C04B24/36C04B22/002C04B14/02
Inventor 迟韵博刘群娣
Owner 陕西国琳建设工程有限公司
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