JPS61165408A - Surface structure in steel panel paved road surface - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the improvement of the surface structure of a steel deck pavement, and is applied to bridges such as road bridges and viaducts.

[Prior art]

According to the results of research conducted by the inventors of the present invention, the important points of the surface structure of the above-mentioned steel deck paved road surface are as follows. That is, it has (+1) flow resistance and flexibility,
Being able to prevent the occurrence of ruts and cracks.

伽) Excellent drainage performance and the ability to maintain high slip resistance even when the pavement surface becomes wet with rainwater, etc.

(C) While the adhesive area of the aggregate embedded in the surface layer is large, the adhesive force with the base material is also large, and there is little risk of the aggregate peeling off, chipping, and scattering.

(d) The surface layer has high surface flatness and excellent noise reduction properties.

(el) The surface layer can be produced in a factory, has uniform dimensions and quality, and can be easily transported while being rolled around a drum, and can be easily installed.

However, with the surface structure of conventional steel deck pavement,
At present, we have not found anything that satisfies all of the above points.

[Purpose of the invention]

An object of the present invention is to provide an excellent surface structure for a steel deck pavement road surface that can satisfy all of the above-mentioned points.

[Structure of the invention]

That is, the present invention provides a base layer laid on the surface of a steel deck;
a surface layer disposed on the surface of the base layer via an adhesive layer, the surface layer being mainly formed of a flexible polymer material, and a reinforcing material embedded in the bottom of the surface layer, Furthermore, the gist thereof is a surface structure of a steel deck pavement road surface, characterized in that aggregate coated with a coupling agent is buried so that a part thereof protrudes above the surface of the surface layer. .

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

Fig. 1 is a partially cutaway perspective explanatory view showing the overall structure of a steel deck pavement road surface to which a surface layer according to an embodiment of the present invention is applied, and Fig. 2 is an enlarged cross-sectional view taken along the line A-A in Fig. 1. It is a diagram.

In the figure, the overall structure of the steel deck pavement surface E is as follows: steel deck 1
The base layer 20 laid on the surface 10a of 0 and this base layer 2
A surface layer 4 disposed on the surface 20a of 0 with an adhesive layer 30 interposed therebetween.
It is composed of 0.

In the present invention, in particular, the surface layer 40 is formed mainly of a flexible polymer material 41, a reinforcing material 42 is embedded in the bottom of the surface layer 40, and a coupling agent 44 is further coated. The aggregate 43 is buried so that a portion thereof protrudes above the surface 40a of the surface layer 40.

To further explain this structure, the steel deck slab 10 constitutes the base of pavement applied to bridges such as road bridges and viaducts, and in this embodiment, after rust removal by blasting etc. Steel plates that have been treated and have anti-rust coating are used.

In addition, the base layer 2 laid on the surface 10a of this steel deck 10
0 mainly performs unevenness correction of about 5fi due to irregularities scattered on the surface 10a of the steel deck 10, that is, the surface to be paved, such as build-up of welds, traces of cutting and removal of hanging pieces, etc. After it is laid on the steel deck 10 to a thickness of about 5mm to 400mm, it is hardened.

The base layer 20 may be made of, for example, bituminous, bituminous rubber, or
Resin systems such as epoxy resins and urethane resins, bituminous resin systems,
It is made of rubber-based materials, and it is also mixed with ceramic powder, silica sand, slag, and other aggregates, fibers, and anti-rust materials, and various waterproof sheets such as non-woven fabric, paper, and reticulated sheet mesh are used. It is preferable to bury it in the base layer 20 to facilitate paving to a uniform thickness, provide waterproofness, and prevent rutting (flow deformation) due to wheel loads.

In particular, when the base layer 20 is mainly made of bitumen or bituminous rubber, a material with a high aggregate ratio such as asphalt concrete is used, or when booth asphalt is used, a honeycomb-shaped wire mesh, etc. When you bury the
Rutting (flow deformation) due to wheel loads can be further prevented.

Note that the base layer 20 described above can be omitted if the adhesive layer 30 can prevent corrosion and correct unevenness of the steel deck 10.

The adhesive layer 30 may be made of a resin-based adhesive such as an epoxy resin or a urethane resin, a liquid adhesive such as a rubber-based adhesive, a bitumen-based adhesive, a bituminous rubber-based adhesive, a bituminous resin-based adhesive, a hot melt rubber, a naturally vulcanized rubber, or the like. A rubber material is used.

In this embodiment, the adhesive layer 30 has elasticity and
A two-component room-temperature curing high-modulus epoxy adhesive with excellent extensibility and sedentary/nod resistance is used, and its thickness is 11.
~5 dragons are preferred I, z.

The surface layer 40, which is laid on the surface 20a of the base layer 20 via the adhesive layer 30, is formed mainly from the flexible polymer material 41, as described above.

As the flexible polymer material 41, a rubber material such as heat vulcanized rubber, naturally vulcanized rubber, liquid rubber, or hot melt rubber, or a resin material such as epoxy resin or urethane resin may be used alone or in combination. It consists of a mixture of more than one type of material, and these rubber-based and resin-based materials are combined with ceramic powder.

Materials such as aggregates having wear resistance such as silica sand, slag, and stone powder, short fibers (cant fibers) such as steel fibers, synthetic fibers, and glass fibers may be used alone or in combination.

The reinforcing material 42 buried in the bottom of the surface layer 40 is a layered layer of woven fabric, rope, non-woven fabric of synthetic fibers, steel fibers 1, synthetic fibers, and short fibers (cut fibers) of glass fibers.

By using the flexible polymer material 41 and the embedded reinforcing material, a reinforcing material that maintains flow resistance and flexibility can be obtained, and the occurrence of rutting and cracking can be prevented.

The aggregate 43 may be crushed road stones, ceramic tiles, etc. molded into rectangular parallelepipeds, short columns, polyhedrons, etc., or crushed pieces. It is preferable to use one that has little variation in shape and that does not have a one-handed shape or a long and narrow shape. These aggregates 43 are buried further with their upper portions protruding above the surface 40a of the surface layer 40. It is desirable to ensure a protrusion length of 21 or more.

With the above aggregate structure, the protrusion height and burial depth of the aggregate 43 can be controlled, and a pavement surface with high flatness and noise reduction properties can be obtained, and the individual aggregates 43 and the surface layer 40 can be formed. The adhesive area with the flexible polymer material 41 can be increased, and the aggregate 43 will not peel off unnecessarily.
It is possible to significantly reduce the risk of breakage and scattering.

In addition, since the individual aggregates 43 protrude from the surface 40a of the surface layer 40, even if the road surface is wet with rainwater, water can be quickly drained from the gaps between the protruding aggregates 43, which is useful when the vehicle is running at high speed. ＼It is possible to prevent the occurrence of hydrobraining phenomenon.

Coupling agent 44 coated on the surface of aggregate 43
A silane-based coupling agent is suitable for this, and a coupling agent modified according to the material composition of the flexible polymer material 41 may be used, or a coupling agent of the composition of the flexible polymer material 41 may be used. It is used by mixing it into a drug. By previously surface-treating the aggregate 43 with the coupling agent 44 in this way, the adhesiveness between the aggregate 43 and the flexible polymer material 4 can be improved, and peeling of the aggregate 43 can be prevented. effective.

The thickness of the coating of the above-mentioned coupling agent 44 on the aggregate 43 is usually 1 wg+ or less, but when the flexible polymer material 41 is applied to the aggregate 43 whose surface has been treated with the coupling agent 44, If you use a secondary coated material,
A flexible polymer material 41 is always interposed between the buried aggregates 43, and this prevents the local concentrated force that occurs between adjacent aggregates when the aggregates 43 are displaced under the action of a wheel load. Flexible polymer material with relaxation, zero span tension, etc. 4
This is desirable because it can prevent cracks in the material 1 and separation from the aggregate 43. In this case, it is preferable to mix fine sand or the like into the flexible polymer material 41 to be subjected to the secondary coating to maintain the surface irregularities of the protruding aggregates so as not to reduce the sliding resistance.

As described above, the surface layer 40 is mainly made of a flexible polymeric material 41 such as rubber or plastic and is molded in a factory. Since the surface layer 40 is formed of the flexible polymer material 41 in this way, the pressure regulator 10
Alternatively, it can be easily joined along the curvature surface or slope of the base layer 20 laid on the surface, and a smooth paved surface can be obtained, and the pressure regulator 1 can be
It has excellent followability to zero deflection, can prevent cracking, and can be easily produced in a factory.

Note that the width dimension of this surface layer 40 is limited depending on the capacity of the production equipment, but the length dimension can be continuously formed into a long length, and in this example, it is the same as the length of the expansion joint on the bridge surface. It is shaped to length.

Furthermore, if the length of the surface layer 40 is made to be the same as the gap between the expansion joints of the bridge, the butt portions of the surface layer 40 that cross the vehicle traveling direction can be formed on the bridge surface. The running performance and ride comfort of the vehicle can be greatly improved without creating joints. Furthermore, if the above-mentioned flexible polymer material 41 is rubbed into the joints created by the widthwise abutting portions of the surface layer 40 after construction, a paved surface without joints can be obtained, and the vehicle can run smoothly. The performance and riding comfort can be further improved.

〔Effect of the invention〕

Since the present invention is configured as described above, the following effects can be achieved. That is, (a) It has flow resistance and flexibility, and can prevent the occurrence of ruts and cracks.

(b) It has excellent drainage properties and can maintain high slip resistance even if the pavement surface becomes wet with rainwater, etc.

(While the adhesion area of each aggregate embedded in the C1 surface layer is large, the adhesion force with the base material is also large, and the aggregate
There is little risk of it breaking or scattering.

fd) The surface layer has high surface flatness and excellent noise reduction properties.

The surface layer can be produced in a factory, has uniform dimensions and quality, can be transported wrapped around a drum, and can be easily installed.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective explanatory view showing the overall structure of a steel deck pavement road surface to which a surface layer according to an embodiment of the present invention is applied, and Fig. 2 is an enlarged cross-sectional view taken along the line A-A in Fig. 1. It is a diagram. 10... Steel deck slab, 10a... Surface of steel deck slab, 20.
... Base layer, 20a... Surface of base layer, 30... Adhesive layer, 40... Surface layer, 40a... Surface of surface layer,
41... Flexible polymer material, 42... Reinforcement material, 43
... aggregate, 44... coupling agent.

Claims (1)

[Claims] It is composed of a base layer laid on the surface of the steel deck plate, and a surface layer placed on the surface of the base layer via an adhesive layer, and the surface layer is mainly made of a flexible polymer material. A steel deck pavement road surface characterized in that a reinforcing material is buried in the bottom of the surface layer, and aggregate coated with a coupling agent is buried so that a part of it protrudes above the surface of the surface layer. surface structure.