High-ductility elastic ultrathin overlay asphalt mixture, paving method of asphalt mixture and paved high-ductility and ultra-thin overlay

An asphalt mixture and overlay technology, which can be used in pavement details, on-site coagulation pavement, climate change adaptation, etc. Achieve the effect of solving driving comfort, increasing elasticity and resistance to rutting, and increasing viscosity

Pending Publication Date: 2021-08-24
NANFANG HIGH TECH ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional asphalt mixture has poor viscosity, poor toughness at low temperature, low elasticity, and high noise, which cannot be used on high-elongation elastic ultra-thin overlays. Therefore, it is urgent to solve a technology suitable for high-elongation elastic ultra-thin overlays. Asphalt mixture and its paving method

Method used

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  • High-ductility elastic ultrathin overlay asphalt mixture, paving method of asphalt mixture and paved high-ductility and ultra-thin overlay
  • High-ductility elastic ultrathin overlay asphalt mixture, paving method of asphalt mixture and paved high-ductility and ultra-thin overlay
  • High-ductility elastic ultrathin overlay asphalt mixture, paving method of asphalt mixture and paved high-ductility and ultra-thin overlay

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1: A high-elongation elastic ultra-thin overlay asphalt mixture, including the following raw materials in parts by weight: 100 parts of asphalt, 25 parts of modified emulsified asphalt, 58 parts of coarse and fine aggregates, 4 parts of filler, Polydimethyl 15 parts of base silicone oil, 30 parts of nano clay. The modified emulsified asphalt is made of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier, and is a slow-cracking and fast-setting cationic asphalt emulsion obtained through an emulsification process. Wherein, in parts by weight, the ratio of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier in the modified emulsified asphalt is 10:3:1:1. Wherein, the modifier is water-based epoxy resin and polyurethane 1:2, the emulsifier is a cationic slow-cracking and fast-setting emulsifier, and the dosage of the emulsifier is 1%. The coarse and fine aggregates are basalt coarse aggregates of 4.75-7.5mm, basalt fi...

Embodiment 2

[0034] Example 2: A high-elongation elastic ultra-thin overlay asphalt mixture, including the following raw materials in parts by weight: 100 parts of asphalt, 30 parts of modified emulsified asphalt, 65 parts of coarse and fine aggregates, 10 parts of filler, polydimethyl 20 parts of base silicone oil, 40 parts of nano clay. The modified emulsified asphalt is made of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier, and is a slow-cracking and fast-setting cationic asphalt emulsion obtained through an emulsification process. Wherein, in parts by weight, the ratio of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier in the modified emulsified asphalt is 10:5:3:3. Wherein, the modifier is water-based epoxy resin and polyurethane 1:2, the emulsifier is a cationic slow-cracking and fast-setting emulsifier, and the dosage of the emulsifier is 1%. The coarse and fine aggregates are basalt coarse aggregates of 4.75-7.5mm, basalt f...

Embodiment 3

[0035] Embodiment 3: A high-elongation elastic ultra-thin overlay asphalt mixture, including the following raw materials in parts by weight: 100 parts of asphalt, 27 parts of modified emulsified asphalt, 62 parts of coarse and fine aggregates, 7 parts of filler, Polydimethyl 17 parts of base silicone oil, 35 parts of nano clay. The modified emulsified asphalt is made of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier, and is a slow-cracking and fast-setting cationic asphalt emulsion obtained through an emulsification process. Wherein, in parts by weight, the ratio of asphalt, styrene-butadiene-styrene block copolymer, emulsifier and modifier in the modified emulsified asphalt is 10:4:2:2. Wherein, the modifier is water-based epoxy resin and polyurethane 1:2, the emulsifier is a cationic slow-cracking and fast-setting emulsifier, and the dosage of the emulsifier is 1%. The coarse and fine aggregates are basalt coarse aggregates of 4.75-7.5mm, basalt...

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Abstract

The invention discloses a high-ductility elastic ultrathin overlay asphalt mixture comprising the following raw materials in parts by weight: 100 parts of asphalt, 25 to 30 parts of modified emulsified asphalt, 58 to 65 parts of coarse and fine aggregate, 4 to 10 parts of filler, 15 to 20 parts of polydimethyl silicone oil and 30 to 40 parts of nano carclazyte. The modified emulsified asphalt is prepared from asphalt, a styrene-butadiene-styrene block copolymer, an emulsifier and a modifier, solves the problems of poor viscosity, poor toughness under a low-temperature condition, small elasticity and loud noise of traditional asphalt, and can significantly enhance the waterproof performance, crack resistance and low-temperature toughness of asphalt micro-surface.

Description

technical field [0001] The invention relates to a high-elongation elastic ultra-thin overlay asphalt mixture, a paving method and a high-elongation elastic ultra-thin overlay after paving, and belongs to the technical field of road surface construction. Background technique [0002] Super viscous pavement asphalt mixture is a kind of polymer modified emulsified asphalt, coarse and fine aggregates, fillers, water and additives mixed according to the design mix ratio by special mechanical equipment to form a super viscous and ultra-thin wear layer mixture and paved on the original road surface preventive maintenance technology with high skid resistance and durability to get on and quickly resume traffic. The time for the ultra-thin wearing layer to close the traffic varies according to the environment of the project, and usually the traffic can be opened within 1 hour. [0003] The high-elongation elastic ultra-thin overlay technology is a rapid paving method that does not re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26E01C7/35E01C11/00E01C11/24E01C19/48
CPCC04B26/26E01C7/353E01C11/005E01C19/48E01C19/4806E01C19/4826E01C11/24C04B2111/0075C04B2201/10C04B2201/50C04B14/14C04B14/10C04B24/42C04B24/2688C04B24/281C04B24/282C04B2103/0068C04B7/00Y02A30/60
Inventor 孙斌刘辉明金辉煌郁江雷
Owner NANFANG HIGH TECH ENG TECH CO LTD
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