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Cast asphalt concrete material and preparation method thereof

A kind of asphalt concrete, pouring technology, applied in the field of road construction materials, can solve the problems of rutting, affecting the driving safety and service life of the pavement, and achieve the effect of excellent high temperature stability and good water tightness

Inactive Publication Date: 2010-12-15
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional pourable asphalt mixture is prone to serious rutting at high temperatures of 60-70 °C, which affects the driving safety and service life of the pavement

Method used

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  • Cast asphalt concrete material and preparation method thereof
  • Cast asphalt concrete material and preparation method thereof
  • Cast asphalt concrete material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054]Embodiment: Each raw material is calculated by weight ratio, 10 parts of SBS modified asphalt, 15 parts of Trinidad Lake Asphalt (TLA), 280 parts of basalt aggregate, and 25 parts of mineral filler. First, put 10 parts of SBS modified asphalt and 15 parts of TLA into a special mixer at 180°C and mix evenly to make castable asphalt binder; then, add 25 parts of mineral filler into the mixer in three times to combine with castable asphalt Mix the materials and stir for not less than 60 minutes to make castable asphalt cement; secondly, add basalt aggregates that have been preheated to 220°C to 240°C into the mixer, mix with castable asphalt cement, and stir for not less than After 90 minutes, the pourable asphalt mixture is made; again, the castable asphalt mixture is poured into the vertical mold in the construction area; finally, the pourable asphalt mixture is poured into the vertical mold, and it is manually smoothed and maintained for 4 to 8 hours. Made of new pouring...

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Abstract

The invention relates to a cast asphalt concrete material which comprises the components of cast asphalt binder and aggregate in the weight ratio of 5-10:100. The cast asphalt binder is prepared from the following raw materials in portions by weight: 1-10 portions of ethylene-butadiene-styrene block polymer modified asphalt and 1-20 portions of Trinidad lake asphalt. The aggregate is prepared from the following raw materials in portions by weight: 45-300 portions of basalt aggregate and 3-55 portions of mineral filler. The provided cast asphalt concrete material has the advantages of favorable water tightness, favorable deformation compliance, excellent high temperature stability and the like.

Description

technical field [0001] The invention relates to a pouring asphalt concrete material used for steel bridge deck pavement and a preparation method thereof, belonging to the technical field of road building materials. Background technique [0002] Pourable asphalt concrete is a kind of asphalt concrete that is mixed at a high temperature of 220-260°C, paved and formed by the fluidity of the mixture itself without rolling, and has a void ratio of less than 1%. In terms of material composition, cast asphalt concrete belongs to the type of "two high and one low", that is, the content of cast asphalt binder and fine aggregate is high, and the content of coarse aggregate is low. [0003] Castable asphalt binder is made by mixing base asphalt with Trinidad Lake Asphalt (TLA). The blending of higher grade base asphalt and TLA is beneficial to improve the ductility of castable asphalt binder and improve the deformation ability of castable asphalt mixture; after the base asphalt materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
Inventor 钱振东罗桑王建伟陈磊磊陈春王江洋
Owner SOUTHEAST UNIV
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