High-viscosity modified asphalt pavement with prefabricated coil (plate) structure

A modified asphalt, high-viscosity technology, applied to pavements, roads, roads and other directions paved with prefabricated blocks, can solve the problem of improving the overall performance of the unmodified asphalt, and achieve excellent road performance, good elasticity, and anti-aging. powerful effect

Active Publication Date: 2015-07-29
江苏省淮安市公路管理处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tan Yiqiu and others pointed out in the article "Performance Optimization Method of Composite Modified Asphalt Joint Filler" ("Highway Traffic Science and Technology" in January 2012, Volume 29, Issue 1) that single modification has limitations and cannot make the modified The overall performance of permanent asphalt has been comprehensively improved, and composite modified asphalt is the current research trend

Method used

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  • High-viscosity modified asphalt pavement with prefabricated coil (plate) structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: factory production road thin-layer overlay according to the following steps

[0044] 1. Select structural materials: base material (non-woven geotextile) + binder (high viscosity modified asphalt) + reinforcement (glass fiber) + coarse aggregate (gravel) + fine aggregate (sand and stone chips) + Filler (mineral powder) + additive (viscosity reducer); the cement material uses No. 70 matrix asphalt mixed with high-viscosity modified additive HVA (Highway Research Institute of the Ministry of Communications), and the reinforcement material uses glass fiber, and the specification is E-glass fiber; The aggregate is made of basalt with a size of 4.75-9.5mm; the fine aggregate is made of limestone with a size of 0-4.75mm; the filler is made of hydrophobic stone, dry and clean limestone powder; the pigment is made of iron oxide red inorganic pigment; viscosity reducer Use Frawarm? (French temperature) organic additives;

[0045] 2. Ratio design: According to the ...

Embodiment 2

[0049] Embodiment 2: factory production road thin layer pavement according to the following steps

[0050] 1. Select structural materials: base material (non-woven geotextile) + binder (high viscosity modified asphalt) + reinforcement (glass fiber) + coarse aggregate (gravel) + fine aggregate (sand and stone chips) + Filler (mineral powder) + pigment (pigment) + additive (viscosity reducer); the cement material uses No. 90 matrix asphalt mixed with RST (Shanghai Pudong Construction) direct-input modifier; the reinforcement material uses glass fiber, the specification is E -Glass fiber; basalt is selected as the coarse aggregate, the specification is 4.75-9.5mm; limestone is selected as the fine aggregate, the specification is 0-4.75mm; the filler is hydrophobic stone, dry and clean limestone slag; the viscosity reducer is SASOWAM organic additive;

[0051] 2. Ratio design: According to the environmental requirements of the temperature zone, the ratio of the mixture is designe...

Embodiment 3

[0055] Embodiment 3: factory production road thin layer pavement according to the following steps

[0056] 1. Select structural materials: base material (non-woven geotextile) + binder (high viscosity modified asphalt) + reinforcement (glass fiber) + coarse aggregate (gravel) + fine aggregate (sand and stone chips) + Filler (mineral powder) + pigment (color material) + additive (viscosity reducer); the cement material is made of No. 70 matrix rubber asphalt mixed with high-viscosity modified additive HVB (Hubei Guochuang); the reinforcement material is made of glass fiber, and the specification is E -Glass fiber; basalt is used for coarse aggregate, the specification is 4.75-13.2mm; limestone is used for fine aggregate, the specification is 0-4.75mm; hydrophobic stone is used as filler, dry and clean limestone mineral powder; chromium oxide green inorganic pigment is used Pigment; Viscosity reducer uses SASOWAM organic additives.

[0057] 2. Ratio design: According to the env...

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Abstract

The invention discloses a high-viscosity modified asphalt thin layer road surface for an assembled coil (plate) structure. A method for forming the high-viscosity modified asphalt thin layer road surface comprises the following steps of: preparing a substrate (non-woven geotextile), a cementing agent (high-viscosity modified asphalt), a reinforced material (glass fiber), rough aggregate (smashed stone), fine aggregate (sand and stone chips), a filler (mineral powder), a pigment (coloring matter) and an additive (viscosity depressant) according to the requirements of service environments such as hot regions, warm regions and cold regions; designing mixtures of different mixture ratios; paving non-woven geotextile serving as a substrate on a production line; paving a high-viscosity modified asphalt warmly-mixed mixture formed by stirring on the substrate; pressing into a coil (plate) road thin layer road surface by using a pressure machine; coiling coils into cylinders by adopting a cylindrical roller support; and packing plates in a supporting way. In the invention, the road asphalt thin layer road surface is integrated into industrial production and assembled construction, so that the high-viscosity modified asphalt thin layer road surface has the characteristics of high integration, quick construction, reliable quality, superior performance, saving in energy, environment friendliness, attractiveness, practicability, wide application and the like.

Description

technical field [0001] The invention belongs to the technical field of highway traffic infrastructure construction, and specifically relates to a high-viscosity modified asphalt pavement surface layer structure and its production and assembly method, that is, a high-viscosity modified asphalt with an assembled coil (plate) material structure Road thin pavement. Background technique [0002] Asphalt pavement (also known as flexible pavement) is composed of surface layer, base layer, subbase layer, cushion layer and roadbed. The surface layer is a structural layer that directly accepts the repeated action of wheel loads and the influence of natural factors. It consists of 1-3 layers, from top to bottom are the surface layer, the middle surface layer and the lower layer, or the upper layer and the lower layer of the two-layer structure. Floor. The main function of the surface layer is to provide a non-slip, smooth, wear-resistant and low-noise surface. The surface layer shal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C5/22
CPCY02A30/30
Inventor 张玉恒
Owner 江苏省淮安市公路管理处
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