CN202194045U

CN202194045U - Asphalt pavement surface interlayer of municipal road

Info

Publication number: CN202194045U
Application number: CN2011201254793U
Authority: CN
Inventors: 封同生; 姚为民; 祝勤勇; 严峰; 张建
Original assignee: TAIXING MUNICIPAL ENGINEERING Co Ltd
Current assignee: TAIXING MUNICIPAL ENGINEERING Co Ltd
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2012-04-18
Anticipated expiration: 2021-04-26

Abstract

The utility model relates to an asphalt pavement surface interlayer of a municipal road, which is characterized that the asphalt pavement surface interlayer is formed according to the following steps, firstly, after a subjacent layer is paved, an uneven surface is mechanically formed on the subjacent layer; secondly, a new asphalt surface layer is then paved; and thirdly, according to the number of the to-be-paved layers, multi-layer pavement is carried out according to the steps till the pavement is finished. In order to enhance the bond stress of the interlayer, bonding oil is applied to the uneven subjacent layer, so as to form a bonding layer, and a new asphalt surface is paved on the bonding layer after the completion of preservation. The asphalt pavement surface interlayer of the municipal road increases the sliding resistance of the interlayer, acts for resisting shearing stress, obviously improves the bonding degree of the interlayer, and effectively prevents the interlayer sliding.

Description

The bituminous pavement top interlayer

Technical field

The utility model relates to a kind of flexible pavement, particularly a kind of municipal asphalt highway surface layer interlayer.

Background technology

The municipal administration asphalt highway generally is made up of two-layer or three layers of asphalt concrete pavement; Because the road surface is the layering making, so interlayer slip is one of common disease in the actual use, when interlayer slip is meant adhesion strength and the shear strength deficiency between surface layer and surface layer; Under the effect of driving horizontal force; Produce slippage between upper and lower two surface layers, and on the road surface, produce passing, the phenomenon of gathering around pavement diseases such as bag.Existing flexible pavement interlayer processing method is the flexible pavement that layering is paved, and between its layer and layer, carries out interlaminar bonding with the mode of spraying sticking layer oil, and then realizes totally continuous integral body.Promptly after the intact substratum health of making finishes, spraying one layer sticking layer oil, and then making one deck surface layer, sticking layer oil is asked adhesive means as main layer, plays topmost interconnect function.But in practice of construction, because the situation of material, spray application and the practice of construction of sticking layer oil is complicated and changeable, often bond effect is undesirable; Especially to some long, big longitudinal gradients, bend, curved bridge and the serious highway section of overload phenomenon; The shearing force of interlayer is bigger, and the cementation of sticking layer oil is limited, interlayer slip therefore often occurs; Early diseases such as bag appear passing, gather around in the road surface, influence the normal use on road surface.

The utility model content

The utility model problem to be solved provides a kind of high-grade municipal asphalt highway surface layer interlayer that can effectively prevent interlayer slip.

A kind of municipal asphalt highway surface layer interlayer is characterized in that according to the following steps:

1, the intact substratum of making forms convex-concave surface with mechanical means on substratum;

2, repave after finishing and build the new asphalt surface course of one deck;

The number of plies of 3, laying is as requested carried out multilayer pouring by above-mentioned steps, finishes until paving.

For the further adhesion stress between enhancement layer, can be behind completing steps 1, impose sticking layer oil having on the substratum of convex-concave surface, form one deck tack coat, treat that health finishes after, on tack coat, repave and build the new asphalt surface course of one deck.

Above-mentioned formation convex-concave surface can be to adopt milling roller with convex-concave surface or rolled plate on substratum, to roll and form convex-concave surface; Also can form convex-concave surface with plane, the mode of milling.

When milling roller or the rolled plate that has a convex-concave surface when employing rolls on substratum; The temperature of substratum bituminous mixture is preferably in 90～150 ℃; Its degree of compaction is 80%～95%; So not only can roll easily, reach the requirement of male and fomale(M&F), nor can influence the structure and the performance of substratum.

Convex-concave surface can be first on substratum, and hard material pieces such as spreading rubble or concrete precast block are then through rolling hard material pieces such as making rubble or concrete precast block; Partly embed in the substratum, thereby form convex-concave surface, with the mode of rolling in like manner; Through rolling hard material pieces such as making rubble or concrete precast block; When partly embedding substratum, the temperature of substratum bituminous mixture is preferably in 90～150 ℃, and its degree of compaction is 80%～95%.

Convex-concave surface sees from overlooking direction, can be continuous strip or interrupted strip groove from the end to end on road surface, can be a kind of in vertical element, curved line or the broken line bar groove, or the meshed grooves that is intersected to form by vertical element, curved line.

The vertical profile profile of convex-concave surface groove can be by a kind of formed tooth profile in triangle, square, trapezoidal, irregular polygon or circular arc etc., also can be the tooth profile of other shape.

Compared with prior art, because the surface of asphalt surface course is rough shape, during the asphalt surface course that on rough substratum, paves new, the bituminous mixture that newly paves can embed in the groove, roll end after, form the structure of mutual interlock between two-layer; If impose sticking oil reservoir, then increased the contact area of sticking layer oil, thereby strengthened adhesion stress.The effect of these measures is the skid resistances that increased interlayer, has played the effect of opposing shear stress, has significantly improved the bonding degree of interlayer, thereby has stoped the generation of interlayer slip effectively.

Description of drawings

Figure 1A is in the utility model bituminous pavement top interlayer, the vertical profile sketch map of flexible pavement.

Figure 1B is the partial enlarged drawing of Figure 1A flexible pavement interlayer jog.

Fig. 2 is in the utility model bituminous pavement top interlayer, the alternative vertical profile sketch map of flexible pavement.

Fig. 3 unabridged version utility model bituminous pavement top interlayer, one of vertical view after the substratum convex-concave surface forms.

Fig. 4 is the utility model bituminous pavement top interlayer, two of the vertical view after the substratum convex-concave surface forms.

Fig. 5 is the utility model bituminous pavement top interlayer, three of the vertical view after the substratum convex-concave surface forms.

The specific embodiment

The utility model bituminous pavement top interlayer is to lay two-layer flexible pavement, and the specific embodiment is:

Diagram, a kind of municipal asphalt highway surface layer interlayer is characterized in that according to the following steps:

One, rolling in the process at substratum 1; Generally be to finish back (can not carry out final pressure) multiple the pressure; When the bituminous mixture temperature is 100 ℃, degree of compaction is 95% o'clock, rolls with the road roller with shaggy tooth groove rolling wheel; Smooth substratum 1 is rolled into convex-concave surface, and the vertical profile profile of this convex-concave surface is trapezoidal flank profil;

Two, on the convex-concave surface of substratum, spill cloth adhesion coating pitch (being sticking layer oil) then, form one deck tack coat 2, when spraying adhesion coating, oil, should note controlling the sprinkling amount, in case the alluvial phenomenon occurs at groove;

Three, treat that health finishes the new asphalt surface course 3 of back making, cause interlayer to pollute, the new asphalt surface course of making immediately after health finishes for preventing groove ponding, dust stratification.

If lay the 3rd aspect layer, then the rolling in the process of the second layer,, carry out concavo-convex rolling on the surface of the second layer when the bituminous mixture temperature is 100 ℃ and degree of compaction when being 95%, spill cloth adhesion coating pitch then, treat that health finishes back making the 3rd surface layer.

After the substratum making is accomplished; With milling machine smooth substratum is milled into concavo-convex surface, after cleaning is clean, spray adhesion coating pitch more above that; Form one deck tack coat 4; Treat then the tack coat health finish after the new asphalt surface course of making immediately, the vertical profile profile of above-mentioned convex-concave surface is the irregular polygon flank profil, and is as shown in Figure 2.

The convex-concave surface of substratum sees that from overlooking direction it is concavo-convex can be continuous vertical element 11, as shown in Figure 3; Can be interrupted vertical element 12, as shown in Figure 4, its arrangement can be orderly, also can be unordered, and is if adopt the mode of rolling can be curved line 13, as shown in Figure 5.

Claims

1. municipal asphalt highway surface layer interlayer, it is characterized in that: making finishes substratum, on substratum, forms convex-concave surface with mechanical means.