CN205368927U - Cold energy -conserving road surface of regeneration structure of plantmix - Google Patents

Abstract

The utility model discloses a cold energy -conserving road surface of regeneration structure of plantmix, it includes surface course, pitch chip seal, the steady macadam base of water under the cold regeneration of last surface course, adhesive linkage, well surface course, plantmix that old sub -surface top from the top laid in proper order. The utility model discloses can move about freely and quickly under the linear prerequisite the polytype pavement damage of punishment not changing the road surface, improve road surface structure bearing capacity. Compare with traditional pavement maintenance technique, in the work progress of the reducible road surface of this technique to gather materials, the consumption of resource such as pitch and energy to reduce engineering cost, the wastes material problem of banking up etc. Is solved in the consumption that simultaneously can practice thrift natural resources, can reduce environmental pollution, and is energy -concerving and environment -protective.

Description

The energy-conservation pavement structure of cold in-plant recycling

Technical field

This utility model relates to a kind of pavement structure, particularly relates to a kind of energy-conservation pavement structure of cold in-plant recycling.

Background technology

China is with semi-rigid type base Flexible Pavement Structure for primary structure form, and nowadays two kinds of main roads maintenance programs are for directly overlaying and dig reconstruction, but two kinds of construction technologies all exist significant deficiency.According to conventional method for maintaining, dig in a large number, the asphalt of milling goes out of use, the new building stones of exhaustive exploitation and Colophonium resource, the serious environmental destructions such as this not only results in forest cover and reduces, soil erosion, and be a kind of wasting of resources greatly.From 2000, there are about the bituminous paving of 12% every year needed to overhaul, and the old asphalt mixture of generation about 2,200,000 tons/annual, if adopting regeneration techniques to be recycled utilization, can save Master Cost 3.5 hundred million yuan every year.Rule of thumb, the speed with annual 15% is also increased by this numeral, estimate China in 2015 because of waste asphalt mixture that highway house of correction produces will reach 10,000,000 tons/every year, it is carried out the direct economic benefit that regeneration will can produce 1,500,000,000 yuan.Meanwhile, asphalt pavement regeneration utilizes produced environmental benefit also more notable.Pavement recycling refers to the process being recovered and reused by of original ground surface material.Specific in road engineering, it is simply that refer to the top course destroyed, base material digs recovery, broken place postpones, and re-uses among new pavement layer of structure, reaches the purpose that old material is recycled.It is clear that the cost reduction brought owing to recycling old material and environmental protection and energy saving become the primary advantage of regeneration technology.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of energy-conservation pavement structure of cold in-plant recycling, and it can punish polytype pavement disease under not changing the premise that road surface is linear in length and breadth, improves pavement structure bearing capacity.Compared with traditional pavement maintenance technology, the consumption of the resource such as this technology can reduce in pavement construction process gathering materials, Colophonium and energy, thus reducing engineering cost；The consumption of natural resources can be saved simultaneously, solve refuse and bank up problem etc., it is possible to reduce environmental pollution, energy-conserving and environment-protective.

This utility model solves above-mentioned technical problem by following technical proposals: a kind of energy-conservation pavement structure of cold in-plant recycling, it is characterized in that, it upper layer including laying successively from top to down above old pavement basic unit, adhesive linkage, middle surface layer, cold in-plant recycling cutting optimal, bitumen macadam seal coat, water-stable gravel.

Preferably, described upper layer is formed by the SMA-13 type asphalt making that thickness is 4cm.

Preferably, described tack coat is formed by the SBS modified emulsifying asphalt making that thickness is 0.05cm.

Preferably, described middle surface layer is formed by the AC-20 type asphalt making that thickness is 8cm.

Preferably, the thickness of described bitumen macadam seal coat is lcm.

Preferably, the thickness of described bitumen macadam seal coat is lcm.

Positive progressive effect of the present utility model is in that: the consumption of the resource such as this utility model can reduce in pavement construction process gathering materials, Colophonium and energy, thus reducing engineering cost；The consumption of natural resources can be saved simultaneously, solve refuse and bank up problem etc., it is possible to reduce environmental pollution, there is important environment protection significance.This technical system is applicable to punishment and the heavy resurfacing engineering of the diseases such as asphalt pavement rut, load class crack and non-load class crack, can increase substantially highway total quality, reduces the construction cost in highway life cycle；Save a large amount of soil and mineral resources, be conducive to preserving the ecological environment；And construction is simple, progress is fast, and open to traffic is early, less on the impact of traffic, is particularly well-suited to the rebuilding old road upgrading that traffic is heavy.In engineer applied, Cold Recycled Mixture with Emulsified Asphalt structure sheaf can be used for basic unit and the cutting optimal of high-grade highway and each structure sheaf of other standard highway.

Accompanying drawing explanation

Fig. 1 is the structural representation of the energy-conservation pavement structure of this utility model cold in-plant recycling.

Detailed description of the invention

This utility model preferred embodiment is provided, to describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.

As it is shown in figure 1, the energy-conservation pavement structure of this utility model cold in-plant recycling include laying successively from top to down above old pavement basic unit upper layer 1, adhesive linkage 2, middle surface layer 3, cold in-plant recycling cutting optimal 4, bitumen macadam seal coat 5, water-stable gravel 6.

Described upper layer is formed by the SMA-13 type asphalt making that thickness is 4cm.The spreading speed of upper layer is suitable to be controlled within the scope of 2～3m/min, maximum is not to be exceeded 3m/min, and the overall process that paves should be accomplished continuous uniform, slowly be paved.Described tack coat is formed by the SBS modified emulsifying asphalt making that thickness is 0.05cm.The making mode of tack coat is: using pitch sprinkling car to spray, spread quantity is 0.5kg/m².Described middle surface layer is formed by the AC-20 type asphalt making that thickness is 8cm.The thickness of described bitumen macadam seal coat is lcm, and matrix pitch is No. A-90 or A-70 Colophonium, and rubble is 10.0mm～14.0mm rubble.

Described cold in-plant recycling cutting optimal is formed by the emulsified asphalt cold in-plant recycling compound making that thickness is 15cm.Cold in-plant recycling layer 4 lacks with aborning as far as possible or need not gather materials by 10～20mm, and on-the-spot cold regeneration asphalt mixture mixing total moisture content controls between 4.1%～4.4%；Cement treated material reworked material total moisture content controls between 5.4%～6.3%, it is contemplated that in transportation, and scattering and disappearing of moisture, during mixing station discharging, reworked material water content suitably heightens 0.3～0.5 percentage point on this basis.The grading limit parameter of cold in-plant recycling cutting optimal is as follows: be 100 by the quality percentage of 26.5mm sieve aperture, it is 87.5%～100% by the quality percentage of 19mm sieve aperture, it is 60%～75% by the quality percentage of 9.5mm sieve aperture, the quality percentage of 4.75mm sieve aperture is 42%～60%, the quality percentage of 2.36mm sieve aperture is 25%-45%, the quality percentage of 0.3mm sieve aperture is 5%-18%, is 2%-6% by the quality percentage of 0.075mm sieve aperture.The making mode of cold in-plant recycling cutting optimal is as follows: old asphalt pavement milling is recycled to batching plant and carries out second-time breakage, it is ensured that not super size particle materials, and the reclaimed materials after broken is sieved into the 2-3 shelves material that thickness is different；Adopting Continuous Mixing Plant mixing regenerating mixture, mixer should have the accurate measuring device of emulsified asphalt and water, to ensure the accurate control to fluent material addition；Adopt dump truck, within the presetting period, regenerating mixture is transported to paving site；Adopting the paver with automatically or semi-automatically formula adjustment paving thickness and leveling unit to pave, screed does not need heating；First pressing adopts dual-steel wheel road roller static pressure 1～2 time, and then with mode vibroroller cmpacting 1-2 time of frequency low-amplitude, multiple pressure first rolls 3～4 times with single-drum road roller, then rolls 4～6 times with rubber-tyred roller, and final pressure adopts dual-steel wheel road roller to roll.

Described cold regeneration mix adds a certain proportion of cement, utilizes cement water suction aquation, to accelerate emulsified asphalt breakdown of emulsion, improve the early strength of compound.Colophonium and two kinds of binders of cement exist simultaneously, it does not have product, and its mechanics feature has rigidity concurrently with flexible.After old asphalt pavement milling, the disease that former sub-surface is occurred is punished, and can effectively prevent basic unit's disease from reflexing to surface layer.And emulsified asphalt regeneration zone is as flexbile base, it is possible to increase substantially the cracking resistance of bituminous paving, reduce the appearance of reflection crack.Additionally, due to upper layer cementitious matter content is high, good springiness, it is possible to improve the ability of resisting fatigue crack, road surface and reflection crack.When designing and constructing good, Rubber-Asphalt Pavement has the service life longer than plain asphalt road surface, and long service life means that the road that maintenance causes interrupts reducing, and user incurs loss through delay minimizing, and the road surrounding enviroment that construction causes destroy minimizing.Described asphalt pavement regeneration utilizes and decreases the environmental disruption caused due to exploitation new resources, reduces construction costs, reduction of erection time, alleviates the construction impact on traffic.Adopt the rubber powder that junked tire is levigate, it is possible to improve the effective rate of utilization of junked tire, alleviate the pressure of black pollution, be conducive to environmental conservation.

Described emulsified asphalt medium pitch microgranule, with electric charge, can consolidate, be adsorbed on old pavement material particle surface equably, thus improving strength characteristics and the structural-load-carrying capacity on road surface.Described emulsified asphalt cold recycling technology is to construct at normal temperatures, does not need heated asphalt, it is to avoid the performance degradation that the high temperature ageing of Colophonium causes, thus improving the anti-fatigue performance on road surface, extends the service life on road surface.Described technology under not damaging roadbed situation, can accurately control overlay thickness, improve Pavement Condition, improves old road grade.The elastic concrete built is without construction of vibrating, noise-less pollution.Described emulsified asphalt cold regeneration construction is convenient, adopts traditional bituminous mixture laying and rolling apparatus.Described emulsified asphalt is nontoxic, odorless, nonflammable, and work progress does not need heating raw materials, improves execution conditions.The materials such as described employing emulsified asphalt cold recycling technology reusable edible Colophonium and mineral aggregate, reduce the consumption of new material, can save substantial amounts of material cost and cost of transportation.During the design of described regenerating mixture, by controlling the composition of coarse aggregate in regenerating mixture, it is ensured that gather materials and there is certain framing structure, improve its inner frictional resistance, make regenerating mixture have certain early strength.By adding appropriate cement, improve the early strength of regenerating mixture.

Particular embodiments described above; to of the present utility model solving the technical problem that, technical scheme and beneficial effect further described; it is it should be understood that; the foregoing is only specific embodiment of the utility model; it is not limited to this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (1)

1. the energy-conservation pavement structure of cold in-plant recycling, it is characterised in that it upper layer including laying successively from top to down above old pavement basic unit, adhesive linkage, middle surface layer, cold in-plant recycling cutting optimal, bitumen macadam seal coat, water-stable gravel；

Wherein, described upper layer is formed by the SMA-13 type asphalt making that thickness is 4cm；

Described tack coat is formed by the SBS modified emulsifying asphalt making that thickness is 0.05cm；

Described middle surface layer is formed by the AC-20 type asphalt making that thickness is 8cm；

Described cold in-plant recycling cutting optimal is formed by the emulsified asphalt cold in-plant recycling compound making that thickness is 15cm；

The thickness of described bitumen macadam seal coat is lcm.