CN217378444U - Anti-freezing pavement under low-temperature environment condition - Google Patents

Abstract

The utility model provides a frostproofing road surface under low temperature environment condition, its characterized in that: the pavement structure comprises an asphalt concrete layer, a seal coat, a cement layer, a base layer and foundation soil; the ultrathin asphalt concrete layer is a surface layer; the sealing layer is a second layer which is a cover plate of cement concrete, and the cover plate is coated with slurry which is a sealing layer bonding layer; the cement layer is a third layer and consists of a plurality of hollow polygons, and anti-freezing fluid is filled in each polygon; the base layer is a fourth layer made of broken stones; the bottom is foundation soil. The pavement design can be used in winter, perennial cold areas and places with lower temperature and special purposes. The product can be used in cold regions and places with low temperature and special application.

Description

Anti-freezing pavement under low-temperature environment condition

Technical Field

An anti-freezing pavement under low-temperature environment conditions belongs to the field of pavement anti-freezing.

Background

The phenomenon of snow accumulation and icing on the road surface can occur on the road surface in winter, the road surface in severe cold areas all year round or the road surface with some special purposes in a lower temperature environment, so that the adhesion coefficient of vehicle tires is greatly reduced, the dangerous conditions of skidding, deviation, obvious extension of braking distance and the like easily occur on the road surface with the snow and the ice, the operation stability and the safety of the vehicle are seriously influenced, and the frequent traffic accidents are caused. When the problem of pavement anti-freezing is solved, manual snow sweeping and deicing, mechanical ice shoveling, snow melting by a snow melting agent and the like are often adopted, traffic is often obstructed in work, and roadside facilities and the environment are often damaged, and the safety of workers and people in the operation process cannot be well guaranteed.

The existing ice and snow removing technology for the external part of the pavement generally adopts a manual clearing method, mechanical ice removal, snow melting by adopting an industrial salt snow melting agent and other modes. The manual clearing method is that a cleaner is used for manually removing ice and shoveling snow; in the mechanical deicing technology, a loader with an antiskid chain is generally adopted to cooperate with an excavator to deice and shovel snow; the snow melting agent is adopted to melt snow, namely chemical agents are spread on the road surface to reduce the melting point of the snow and ice, so that the snow and the ice are melted, and the accumulated snow and the ice are removed. In the existing deicing and snow melting technology, a manual removing method mainly depends on manual work, and has the defects of low snow shoveling speed, low efficiency, large manpower requirement, high cost, low traffic operation safety factor influence during operation, suitability for only small snow amount or small-range key difficult-to-clean areas and the like; the mechanical ice shoveling technology has the defects of expensive equipment, long idle period, traffic obstruction, low technical level of domestic deicing equipment, incapability of meeting deicing requirements of roads and urban roads in China and the like; the snow melting technology of the snow melting agent is the most widely used method for removing and melting snow at present, but the influence of the environment is large, and the melted snow can be frozen into ice again as long as the environment temperature is reduced, so that the road surface can be smoother. At present, most of snow melting agents in the market belong to salts, the normal growth of plants can be influenced after the salts enter the growth environment of the plants, even the plants die, drinking water can be polluted by the snow melting agents, metal parts such as roads, bridges, sewer pipes and the like can be corroded by the snow melting agents, and the service life of the snow melting agents is shortened.

Disclosure of Invention

The technical problem to be solved is the road surface anti-freezing problem in the prior art. The prior art generally comprises a road surface external ice and snow removing technology and a road surface internal ice and snow removing technology for removing ice and snow on a road surface. The invention starts from the root directly, adopts the technology of removing ice and snow inside the road surface, invents a five-layer road surface structure design that the surface layer is an ultrathin asphalt concrete layer, the middle layer is designed into a cement layer that a plurality of regular hexagonal lattices are closely arranged next to each other and are laid in a honeycomb shape, wherein each hexagonal lattice is filled with an antifreeze, a sealing layer is arranged on the cement layer to play the roles of water resistance and sealing, and a base layer is arranged below the cement layer to play the main role of bearing.

The overall structural design of the anti-freezing pavement can be divided into five layers, wherein the first layer is an ultrathin layer asphalt concrete layer with the thickness of 4-5cm, the second layer is a sealing layer, the third layer is a cement layer, the fourth layer is a base layer, and the fifth layer is foundation soil. The first ultrathin asphalt concrete layer is made of asphalt mixture and is flatly paved on the seal layer during construction; the second seal layer is made of cement concrete; the third cement layer is made of cement, and is suggested to be formed by closely connecting a plurality of hollow regular hexagons in a honeycomb shape, and each hollow hexagon is filled with an antifreezing solution; the fourth base course is a stable macadam base course, the macadam is used as a material, and the macadam is evenly paved on the fifth foundation soil during construction.

The anti-freezing pavement with the five-layer structure is designed, and in the practical process, the pavement can be used in winter, perennial cold areas and places with low temperature and special purposes. The concrete expression is as follows:

1) the problem of preventing the pavement from freezing in winter, cold areas or special use environments is solved.

2) The danger of the road surface caused by the icing of the accumulated snow is solved from the source.

3) The five-layer structure of the pavement design makes the anti-freezing pavement more stable and practical.

4) The cement layer is arranged in a honeycomb shape, so that not only is the space fully utilized, but also the anti-freezing strength of the pavement is increased.

5) The size design of the cement layer can ensure the anti-freezing effect of the pavement and prevent the instability of the pavement caused by the overlarge unit size of each hexagon and the waste of anti-freezing solution and the overhigh cost caused by the undersize.

6) The danger of workers during pavement deicing and snow melting operation is avoided, the safety is high, and the influence on traffic is avoided.

7) High environmental protection performance, no environmental pollution and no damage to peripheral facilities.

Drawings

FIG. 1 is an overall structure view of an anti-freezing road surface

FIG. 2 is a structure view of a cement layer

Detailed Description

As shown in figure 1, 1-ultrathin layer asphalt concrete layer, 2-seal layer, 3-cement layer, 4-base layer and 5-foundation soil. In the practical process, the ultrathin layer asphalt concrete layer 1 is a surface layer; the sealing layer 2 plays roles of water resistance, temperature insulation and sealing; the cement layer 3 consists of a plurality of hollow regular hexagons, and each regular hexagon is filled with an antifreezing solution to play a role in preventing freezing; the base layer 4 plays a main bearing role; the foundation soil 5 plays a role of supporting the road surface. The thickness of the ultrathin asphalt concrete layer 1 is 4-5cm, the thickness of the seal layer 2 is 6cm, the thickness of the cement layer 3 is 10cm, and the thickness of the base layer 4 is 20 cm. The first and second layers are bonded using a conventional slurry.

As shown in figure 2, the cement layer 3 is formed by a plurality of hollow regular hexagons 3-1 which are closely arranged together in a honeycomb shape, and the anti-freezing liquid 3-2 is filled in the hollow regular hexagons 3-1. In the practical process, the length of the outer edge of a single regular hexagon 3-1 of the cement layer 3 is 20cm, and the thickness of the inner and outer cement layers of the regular hexagon 3-1 is 3 cm.

Claims (3)

1. An anti-freezing pavement under low-temperature environmental conditions is characterized in that: the five-layer pavement structure comprises an asphalt concrete layer, a seal layer, a cement layer, a base layer and foundation soil;

the ultrathin layer asphalt concrete layer is a surface layer;

the sealing layer is a second layer which is made of cement concrete;

the cement layer is a third layer and consists of a plurality of hollow polygons, and anti-freezing fluid is filled in each polygon;

the base layer is a fourth layer made of broken stones;

the bottom is foundation soil.

2. The antifreeze pavement under low-temperature environmental conditions as set forth in claim 1, wherein:

the hollow polygon is a hollow regular hexagon.

3. The antifreeze pavement under low-temperature environmental conditions as set forth in claim 1, wherein:

the thickness of the asphalt concrete layer is 4-5 cm.

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