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Lignocellulose material for road and method for making same

A lignocellulosic, road-use technology, applied in the field of fiber stabilizer material and preparation of asphalt mastic macadam pavement, expressway pavement, can solve the problems of difficult dispersion of asphalt, difficulty of complete dispersion of fibers, and easy agglomeration due to moisture , to reduce the possibility of being damp and easy to agglomerate, reduce the accumulation of static electricity on the surface, and improve the effect of hydrophobic performance

Inactive Publication Date: 2008-01-02
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the novelty of SMA technology, the research and production technology of lignocellulose are different at home and abroad. According to the analysis of the application of lignocellulose at home and abroad, there are examples of unsuccessful use of SMA pavement in different countries and regions. , some of which are related to the low quality of lignocellulosic products, which limits the continued promotion of SMA pavements to a certain extent
According to the application of SMA in various countries in the world and relevant research findings, the main problems in the use of lignocellulosic products are: a) susceptible to moisture and agglomeration, resulting in product failure; b) insufficient oil absorption, prone to high temperature oil flooding in summer Phenomenon; c) It has poor affinity with asphalt and is not easy to disperse in asphalt, resulting in part of the asphalt road surface being oily and partly dry; d) Fibers are easy to agglomerate in asphalt; e) Poor high temperature stability, when mixed with asphalt for transportation During the project, the fiber strength changes seriously, which affects its use effect
F) During the air mixing process, the accumulated fibers are not easy to disperse completely; g) The acid and alkali resistance is poor, and the strength drops significantly during the contact with asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 road uses lignocellulosic material and preparation method thereof, (taking actual production pilot test as example), road lignocellulosic material is made of waste newsprint, mixed filler (wherein grinding calcium carbonate consumption is 20% dry pulp, active weight The amount of calcium carbonate is 0.5% dry pulp, the amount of kaolin is 4.5% dry pulp), surfactant (cetyl ammonium chloride is 0.1% dry pulp), water repellent (alkyl ketene dimer Body dosage is 0.15% dry pulp), retention aid (polyacrylic acid amine-bentonite consumption is 0.25% dry pulp), and the weight ratio calculated on dry pulp is 100: 25: 0.1: 0.15: 0.25; its preparation steps as follows:

[0045]1) Waste paper disintegration and dispersion: add 250kg of waste paper into a 5 cubic hydraulic pulper, disintegrate for 4-6 minutes, and completely disintegrate and disperse it;

[0046] 2) Screening and deslagging of the slurry: the diluted fiber has a concentration of 1% and is screened thro...

Embodiment 2

[0054] Example 2 Take the actual production pilot test as an example, the road lignocellulosic material is made of waste newsprint, mixed filler (wherein the grinding calcium carbonate consumption is 20% absolute dry pulp, the active heavy calcium carbonate consumption is 0.5% absolute dry pulp, kaolin The dosage is 4.5% dry pulp), surfactant (the amount of hexadecyl ammonium bromide is 0.1% dry pulp), waterproofing agent (the amount of dispersing rosin glue is 2% dry pulp), retention aid (epoxy Ethane-modified phenolic resin consumption is 1% dry pulp) and the weight proportion calculated with dry pulp is 100: 25: 0.1: 2: 1; Its preparation steps are as follows:

[0055] 1) Waste paper disintegration and dispersion: add 250kg of waste paper into a 5 cubic hydraulic pulper, disintegrate for 4-6 minutes, and completely disintegrate and disperse it;

[0056] 2) Screening and deslagging of the slurry: the diluted fiber has a concentration of 1% and is screened through a pressure ...

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Abstract

The invention discloses a road wood fibre, which comprises the following steps: choosing waste newspaper as raw material; proceeding high concentration fluff; screening; deslagging; purifying slurry; stirring with mixed filling evenly; pasting; forming paper web; squeezing; drying with drying cylinder and infrared; proceeding flicking course; adding into caoline (talcum powder), active calcium carbonate filler and NaCl with dry method; getting the wood fiber product.

Description

1. Technical field [0001] The invention belongs to the field of new materials for road engineering, and in particular relates to a fiber stabilizer material applied to asphalt mastic gravel pavement (stone matrix asphalt, SMA) expressway pavement and a preparation method thereof. 2. Background technology [0002] SMA pavement is one of the most popular high-grade road structures in the world. Due to its own structural characteristics, fiber stabilizers play a vital role in SMA pavement. At present, almost all the fiber stabilizers used for SMA pavement in my country are lignocellulose. Lignocellulose plays the following roles in SMA pavement: a) reinforcement; b) dispersion; c) adsorption and absorption of asphalt; d) viscosity increasing; e) stabilizing buffer. Due to the novelty of SMA technology, the research and production technology of lignocellulose are different at home and abroad. According to the analysis of the application of lignocellulose at home and abroad, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18
CPCY02W30/66
Inventor 翟华敏马朴
Owner NANJING FORESTRY UNIV
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