CN103343504A - Ultra-thin asphalt sand seaming method - Google Patents

Abstract

The invention discloses an ultra-thin asphalt sand seaming method, comprising the following steps of: spraying viscous oil asphalt at the part which is 2.5-3m from a seam in a molding area; paving a layer of geogrid which exceeds the seam about 0.5-1m on viscous oil; paving ultras-asphalt sand mixture on the geogrid; carrying out joint-cutting treatment after molding; spraying the viscous oil asphalt at the part which is 2.5-3m from the seam on the section on which the asphalt is not paved before preparation of construction of a new construction section; then adding a layer of geogrid, paving the asphalt sand mixture on the geogrid; and grinding and molding. The ultra-thin asphalt sand seaming method disclosed by the invention is simple and convenient, and strong in operability; compaction of the seam on the asphalt sand pavement is achieved; the problem that a crack easily generates is solved; the quality of the asphalt sand pavement is significantly improved.

Description

A kind of ultrathin sand asphalt seam method

Technical field

The invention belongs to the building engineering construction method, concrete is a kind of ultrathin sand asphalt seam method.

Background technology

The sand asphalt compound is fully to mix the system of mixing by the sand material of various particle diameters and a certain proportion of pitch under state to form, advantages such as the sand asphalt surface is meticulous, attractive in appearance, good waterproof performance, driving is comfortable and noise is little, the asphalt sand pavement of making in good basic unit has good practicality; Lacking the exploitation of rubble material or rubble and cost of transportation costliness, but the natural sand material is abundant and exploitation, area that cost of transportation is lower, building asphalt sand pavement is the good approach of development flexible pavement; On the road that is fit to making sand asphalt surface layer, than other hot asphalt mixture surface layers of making, can save cost, reduce cost.

The construction technology of asphalt sand pavement construction technology and domestic flexible pavement is basic identical, during general domestic processing flexible pavement seam, if in the time of can not adopting the hot joining seam, all add baffled at the bitumen layer place that constructed or cut neat, when making faces road section surface mutually, be coated with at seam crossing and spill a small amount of adhesion coating pitch, answer the overlapping layer 5-10CM that spread when paving, pave the back with manually will paving to walk at the preceding mixing material shovel of partly spreading face, walk on compacting road surface earlier when rolling, roll a shop layer 10-15CM, part is newly spread in compacting then, extend through compacting road surface 10-15CM again, fully that the seam compacting is tight, general road roller is vertically to roll seam crossing; But because sand asphalt grating particle is little, bed thickness is generally at 2-4CM, if the moulding road surface is long blanking time with new construction pavement construction, molded road surface rigidity forms, and the asphalt sand pavement that newly paves is because little, the bed thickness of particle as thin as a wafer, adopts above-mentioned way to roll, very easily cause pushing phenomenon, cause the asphalt sand pavement seam crossing to be difficult to compacting repeatedly, quality is not easy qualified, and namely the seam crossing after the moulding very easily produces the crack.

Summary of the invention

Technical problem to be solved by this invention is to propose a kind of ultrathin sand asphalt seam method, and is convenient and simple, and strong operability realizes the compacting of asphalt sand pavement seam crossing, avoids the generation in crack, can significantly improve the asphalt sand pavement quality.

For achieving the above object, a kind of ultrathin sand asphalt seam method of the present invention, its technical scheme is as follows:

The first step: spray sticking oil asphalt near 2.5 ~ 3 meters of seam crossing at shaping area;

Second step: overlay the geo-grid that one deck slightly surpasses about 0.5 ~ 1 meter of seam crossing at sticking oil;

The 3rd step: at the geo-grid ultra-albanite sand compound that paves;

The 4th step: carry out the joint-cutting processing after waiting moulding;

The 5th step: in the sand asphalt section that do not pave, spray sticking oil asphalt again apart from 2.5 ~ 3 meters of seam crossing before waiting new construction paragraph to prepare to construct, overlay one deck geo-grid thereon again, spread out the sand asphalt compound in geo-grid;

The 6th step: oppositely roll, namely never shaping area begins to roll to shaping area, and road roller speed is controlled at 0.5 meter per second, carries out roller-compaction.

Described a kind of ultrathin sand asphalt seam method, when carrying out roller-compaction, road roller becomes miter angle with seam crossing, is difficult for producing passing.

A kind of ultrathin sand asphalt seam method of the present invention, convenient and simple, strong operability has realized the compacting of asphalt sand pavement seam crossing, has solved and has very easily produced problem of cracks, has significantly improved the asphalt sand pavement quality.

Description of drawings

Fig. 1 is constructing structure schematic diagram of the present invention.

The specific embodiment

Referring to accompanying drawing, a kind of ultrathin sand asphalt seam method, its technical scheme is as follows:

The first step: spray sticking oil asphalt near 2.5 ~ 3 meters of seam crossing at shaping area 1;

Second step: overlay one deck at sticking oil and slightly surpass about 0.5 ~ 1 meter geo-grid of seam crossing 4;

The 3rd step: at the geo-grid ultra-albanite sand compound that paves;

The 4th step: carry out the joint-cutting processing after waiting moulding;

The 5th step: in the sand asphalt section that do not pave, spray sticking oil asphalt again apart from 2.5 ~ 3 meters of seam crossing before waiting new construction paragraph to prepare to construct, overlay one deck geo-grid thereon again, spread out the sand asphalt compound in geo-grid;

The 6th step: oppositely roll, i.e. shaping area 2 beginnings never roll to shaping area, and road roller 3 speed are controlled at 0.5 meter per second, carry out roller-compaction.

Described a kind of ultrathin sand asphalt seam method, when carrying out roller-compaction, road roller becomes miter angle with seam crossing, is difficult for producing passing.

A kind of ultrathin sand asphalt seam method of the present invention, convenient and simple, strong operability has realized the compacting of asphalt sand pavement seam crossing, has solved and has very easily produced problem of cracks, has significantly improved the asphalt sand pavement quality.

Claims (2)

1. ultrathin sand asphalt seam method, its technical scheme is as follows:

The first step: spray sticking oil asphalt near 2.5 ~ 3 meters of seam crossing at shaping area;

Second step: overlay the geo-grid that one deck slightly surpasses about 0.5 ~ 1 meter of seam crossing at sticking oil;

The 3rd step: at the geo-grid ultra-albanite sand compound that paves;

The 4th step: carry out the joint-cutting processing after waiting moulding;

The 5th step: in the sand asphalt section that do not pave, spray sticking oil asphalt again apart from 2.5 ~ 3 meters of seam crossing before waiting new construction paragraph to prepare to construct, overlay one deck geo-grid thereon again, spread out the sand asphalt compound in geo-grid;

The 6th step: oppositely roll, namely never shaping area begins to roll to shaping area, and road roller speed is controlled at 0.5 meter per second, carries out roller-compaction.

2. a kind of ultrathin sand asphalt seam method according to claim 1, when it is characterized in that carrying out roller-compaction, road roller becomes miter angle with seam crossing.

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