Ultra-thin wearing layer bituminous concrete material for paving bridge deck and preparation method thereof

A technology for asphalt concrete and bridge deck pavement, which is applied in the field of road construction materials, can solve problems such as permanent deformation of aggregates, decreased drainage capacity, loss of anti-skid ability of ultra-thin wear layers, etc., and achieve good anti-skid performance and good high temperature stability sexual effect

Inactive Publication Date: 2010-12-15
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

[0003] Most of the traditional ultra-thin wearing layer asphalt concrete uses polymer modified asphalt as the binder. Under the influence of traffic load, wind load, temperature change and other factors, the ultra-thin wearing layer has many diseases. The most typ

Method used

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  • Ultra-thin wearing layer bituminous concrete material for paving bridge deck and preparation method thereof

Examples

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Embodiment 1

[0044] Example 1: Each raw material is calculated by weight ratio, 10 parts of epoxy resin, 50 parts of base asphalt with curing agent added, 1000 parts of basalt aggregate, and 100 parts of mineral filler. First, heat 10 parts of epoxy resin to 80±5°C and mix with 50 parts of matrix asphalt with curing agent added to 125±5°C and mix evenly to prepare epoxy asphalt binder; The finished epoxy asphalt binder is added to 1000 parts of basalt aggregates preheated to 110-130 °C, and mixed in a mixing pot. The mixing time is not less than 20 seconds, and then 100 parts of mineral fillers are added to the mixing pot. Mix in the mixing pot for no less than 60 seconds, and the bridge deck ultra-thin wear-resistant layer asphalt concrete is prepared.

[0045] Put the above-mixed epoxy asphalt mixture into the transportation equipment, and count the discharge time. During the transportation, insulation measures must be taken. Transport to the construction site and calculate the paving s...

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Abstract

The invention discloses an ultra-thin wearing layer bituminous concrete material for paving a bridge deck. The material consists of an epoxy asphalt binder and an aggregate in a weight ratio of 4-8:100, wherein the ratio of an epoxy resin to a curing agent-added substrate asphalt is 10-25:100; and the aggregate is prepared from the following raw materials in part by weight: 1,200 to 1,000 parts of basalt aggregate and 1,000 parts of mineral filler. The preparation method comprises the following steps of: 1), based on the weight ratio, blending and uniformly mixing the epoxy resin heated to 75 to 85 DEG C and the curing agent-added substrate asphalt heated to 120 to 130 DEG C to prepare the epoxy asphalt binder, wherein the blending ratio is 10-25:100; and 2), adding the prepared epoxy asphalt binder into the basalt aggregate pre-heated to 110 to 130 DEG C, stirring the mixture for at least 20 seconds in a stirring pot, adding the mineral filler into the stirring pot, stirring again for at least 40 seconds, and obtaining the ultra-thin wearing layer bituminous concrete material for paving the bridge deck.

Description

technical field [0001] The invention relates to an ultra-thin wearing layer asphalt concrete material used for bridge deck pavement and a preparation method thereof, belonging to the technical field of road building materials. Background technique [0002] At present, the bridge deck pavement at home and abroad mostly adopts dense asphalt mixture, which provides good strength and stability for the bridge deck pavement during use, and ensures that vehicles pass smoothly. But at the same time, due to the dense gradation of the pavement materials, the surface of the bridge deck pavement is anti-slip and the drainage performance is reduced in rainy days, and the annual losses caused by traffic accidents are quite huge. Therefore, designing or selecting an ultra-thin asphalt wear layer with excellent drainage and anti-skid functions and laying it on top of the bridge deck pavement can effectively reduce the water mist and water splashes caused by driving on the bridge deck paveme...

Claims

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Application Information

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IPC IPC(8): C04B26/26
Inventor 钱振东罗桑王亚奇陈磊磊陈春王江洋
Owner SOUTHEAST UNIV
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