CN209636579U - A Cold Recycled Asphalt Pavement Mixed with Rubber Powder for Microwave Heating - Google Patents

Abstract

The utility model relates to road maintenance technical field more particularly to a kind of cold recycled asphalt road surface for mixing rubber powder convenient for microwave heating.A kind of cold recycled asphalt road surface for mixing rubber powder convenient for microwave heating, including underlayment, regeneration zone, upper base, cutting optimal, the waterproofing tack coat, superficial layer being from top to bottom sequentially overlapped, cutting optimal is connect by waterproofing tack coat with superficial layer, and superficial layer is using the asphalt for adulterating rubber powder.Compared with prior art, the utility model structure is simple, construction is simple, used cold recycling technology takes full advantage of the old aggregate on original road surface, making the absorption microwave efficiency of the asphalt of superficial layer by the rubber powder produced from waste tire simultaneously enhances, energy conservation and environmental protection, high financial profit.

Description

A Cold Recycled Asphalt Pavement Mixed with Rubber Powder for Microwave Heating

technical field

The utility model relates to the technical field of road maintenance, in particular to a cold recycled asphalt pavement mixed with rubber powder which is convenient for microwave heating.

Background technique

In most areas of my country, there will be snow for a period of time in winter. At present, the main methods of snow removal in my country are mechanical snow removal (snow removal by snow plow), manual snow removal, and salt removal. Sprinkling salt to remove snow is a huge waste of resources. These salts will cause great damage to roads and bridges, reduce their service life, and cause certain pollution to the environment. The current snow plows are mainly mechanical snow removal, which consumes a lot of energy, requires a lot of labor, uses a lot of social resources, and the snow on the edge of the road is not easy to remove, which will cause hidden dangers for the secondary freezing of the road. Manual snow removal is inefficient. At present, there are also microwave heating technologies such as infrared and electromagnetic to melt snow and ice on the road surface, which is relatively inefficient. Some of them are mixed with steel fiber, carbon fiber, etc., but there are cost and safety problems, and it is not easy to popularize on a large scale. At the same time, since the "Eleventh Five-Year Plan", the high-grade highways built in my country in the early stage have entered the large and medium maintenance period one after another, and the problem of disposal of the old asphalt pavement materials has become prominent, so resources can be saved (directly using the original asphalt waste as raw materials) , The cold regeneration technology to restore the road performance has paid more attention, which has solved this problem well.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, to meet the practical needs, and to provide a cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating.

In order to achieve the purpose of the present utility model, the technical scheme adopted by the present utility model is: a cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating, comprising a sub-base layer, a regeneration layer, an upper Layer, waterproof bonding layer, surface layer, the lower layer is connected with the surface layer through the waterproof bonding layer, and the surface layer adopts the asphalt mixture doped with rubber powder.

The thickness of the base layer is 30 cm.

The regenerated layer adopts cold regenerated cement-stabilized crushed stone.

The thickness of the upper base layer is 8cm.

The thickness of the underlying layer is 6 cm.

The material used for the waterproof adhesive layer is JC composite waterproof material.

The thickness of the surface layer is 4 cm.

The rubber powder of the surface layer is prepared from waste tires.

The beneficial effects of the present utility model are:

(1) The thickness of the surface layer is 4cm, which can meet the bearing requirements of the surface layer, and at the same time, the microwave incident on the surface of the material with this thickness is less reflected. At the same time, the doped rubber powder is prepared from waste tires by using materials, which is low in cost and environmentally friendly.

(2) The material of the waterproof bonding layer is JS composite waterproof material, which is non-toxic, harmless, non-polluting, simple in construction and short in construction period, and can firmly bond with the asphalt mixture of the underlying layer and the surface layer.

(3) ATB-25 asphalt stabilized gravel with a thickness of 8 cm on the upper base and the graded gravel lower base are combined to form a combined flexible base, which overcomes the excessive rigidity of the original semi-rigid base and causes the shear stress in the asphalt concrete surface to increase sharply. It has the disadvantage of high shear resistance, flexural tensile strength and fatigue resistance, which can slow down the occurrence of reflection cracks and effectively prolong the service life of the pavement.

(4) The regeneration layer is a 20cm cement-stabilized gravel layer, which makes full use of waste resources and saves about 30% of raw materials. Compared with the overall overhaul of road excavation, it saves about 10% of investment and about 80% of time. %.

Compared with the prior art, the present invention has the advantages of simple structure and simple construction, and the adopted cold recycling technology makes full use of the old aggregates of the original pavement. The microwave absorption efficiency is enhanced, energy saving and environmental protection, and high economic benefits.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and implementation cases.

Fig. 1 is a partial cross-sectional structural schematic diagram of the utility model.

Among them, 1 base layer, 2 regeneration layer, 3 upper base layer, 4 lower layer, 5 waterproof adhesive layer, 6 surface layer.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

See Figure 1.

The utility model discloses a cold recycled asphalt pavement mixed with rubber powder, which is convenient for microwave heating. The surface layer 6 and the lower layer 4 are connected with the surface layer 6 through the waterproof adhesive layer 5, and the surface layer 6 adopts the asphalt mixture doped with rubber powder.

The thickness of the base layer 1 is 30 cm.

The said regeneration layer 2 adopts the cement-stabilized gravel of cold regeneration; the regeneration layer is a cement-stabilized gravel layer of 20 cm, which makes full use of waste resources and saves about 30% of raw materials, which is compared with the overall overhaul of road excavation. , saving about 10% of investment and about 80% of time.

The thickness of the upper base 3 is 8 cm; the ATB-25 asphalt stabilized gravel with a thickness of 8 cm on the upper base is combined with the graded gravel lower base to form a combined flexible base, which overcomes the excessive rigidity of the original semi-rigid base and causes asphalt concrete. The shear stress in the surface layer increases sharply, which induces the shear failure of the asphalt concrete surface layer. It has high shear resistance, flexural tensile strength and fatigue resistance characteristics, slows down the occurrence of reflection cracks, and effectively prolongs the service life of the pavement. .

The thickness of the lower layer 4 is 6 cm.

The material used for the waterproof adhesive layer 5 is JC composite waterproof material; the material of the waterproof adhesive layer is JS composite waterproof material, which is non-toxic, harmless, non-polluting, simple in construction and short in construction period, and can be compatible with the underlying layer and surface. Layer of asphalt mixture is firmly bonded.

The thickness of the surface layer 6 is 4 cm; the thickness of the surface layer is 4 cm, which can meet the bearing requirements of the surface layer, and at the same time, the microwave incident on the surface of the material with this thickness is less reflected. At the same time, the doped rubber powder is prepared from waste tires by using materials, which is low in cost and environmentally friendly.

The rubber powder of the surface layer 6 is prepared from waste tires.

Please refer to FIG. 1 , the utility model provides a cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating, including a sub-base layer 1, a regeneration layer 2, an upper base layer 3, and a lower layer that are stacked sequentially from top to bottom. layer 5, surface layer 6. Described sub-base 1 is 30cm thick graded gravel, and the upper part of sub-base 1 is paved with regeneration layer 2, which is 20cm thick cement-stabilized gravel, and the upper part of regeneration layer 2 is upper base 3, which is 8cm thick ATB-25 (intensive distribution of asphalt). Stabilized gravel base); Described lower layer 4 is 6cm thick AC-20C (medium-grain asphalt concrete), described waterproof bonding layer 5 adopts JS composite waterproof material, and described surface layer 6 is thick 4cm doped rubber powder asphalt mixture.

The subbase layer 1 is the graded gravel layer of the original road surface.

The regeneration layer 2 is to spread the powdered cement on the regenerated road before the regenerator. When the regenerator passes through, the cement and the milled old mixture can be mixed and spread, and finally compacted and formed by a road roller. 20cm thick cement stabilized crushed stone layer.

The upper base 3 is 8cm thick ATB-25 asphalt stabilized crushed stone, which is combined with the lower base 3 to form a combined flexible base, which overcomes the excessive rigidity of the original semi-rigid base and causes the shear stress in the asphalt concrete surface to increase sharply. It has the disadvantage of high shear resistance, flexural tensile strength and fatigue resistance, which can slow down the occurrence of reflection cracks and effectively prolong the service life of the pavement.

The lower layer 4 is the main bearing layer and stress dispersing layer in the pavement structure. In order to meet the characteristics of large load bearing and high material requirements, AC-20C with a thickness of 6 cm is selected.

The surface layer 6 is AC-13C (fine-grained asphalt concrete) with a thickness of 4 cm, which is doped with rubber powder, and is made from waste tires by using materials, which is low in cost and environmentally friendly.

The above are only the embodiments of the present utility model, and are not intended to limit the scope of the present utility model's patent. Any equivalent transformation made by using the contents of the present utility model description and accompanying drawings or directly or indirectly applied in the relevant technical fields are the same. Included in the scope of patent protection of the present invention.

Claims (8)

1. A cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating, comprising a sub-base layer (1), a regeneration layer (2), an upper base layer (3), a lower layer (4), a waterproof layer (4) that are stacked in sequence from top to bottom The adhesive layer (5) and the surface layer (6) are characterized in that: the lower layer (4) is connected with the surface layer (6) through the waterproof adhesive layer (5), and the surface layer (6) adopts asphalt doped with rubber powder Mixture. 2 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , characterized in that: the thickness of the sub-base ( 1 ) is 30 cm. 3 . 3 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , wherein the recycled layer ( 2 ) adopts cold recycled cement-stabilized crushed stone. 4 . 4 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , wherein the thickness of the upper base layer ( 3 ) is 8 cm. 5 . 5 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , wherein the thickness of the lower layer ( 4 ) is 6 cm. 6 . 6 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , characterized in that: the material used for the waterproof adhesive layer ( 5 ) is JC composite waterproof material. 7 . 7 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , wherein the thickness of the surface layer ( 6 ) is 4 cm. 8 . 8 . The cold recycled asphalt pavement mixed with rubber powder that is convenient for microwave heating according to claim 1 , wherein the rubber powder of the surface layer ( 6 ) is prepared from waste tires. 9 .