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An anti-rutting agent for cold mixing and paving of asphalt roads

An anti-rutting agent, road technology, applied in the field of anti-rutting agent, can solve the problems of affecting the performance of the mixture, large performance differences, etc., achieve excellent anti-rutting performance, and improve the effect of interface fracture energy

Active Publication Date: 2016-05-18
南通福伦利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large difference in performance between the cement and emulsified asphalt contained in the cement emulsified asphalt mixture, they will interact under certain conditions, thus affecting the performance of the mixture.

Method used

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  • An anti-rutting agent for cold mixing and paving of asphalt roads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Weigh 1Kg of gravel with a crushing value of 9.5-13.2, 2Kg of crushed stone with a crushing value of 4.75-9.5, and 1Kg of stone chips, and mix them into aggregates;

[0016] (2) Weigh 10% powder anti-stripping agent, 10% mineral powder, 20% polymer rubber powder and 50% sulphoaluminate cement to make a concentrated curing agent, and weigh the yellow concentrated curing Add 60g (1.5%) of the curing agent, put the above aggregate and curing agent into the mixing pot and stir for 30s;

[0017] (3) Weigh 80g (2%) of water, add it into the stirring pot and continue stirring for 30s;

[0018] (4) Weigh 380g (9.5%) of asphalt liquid at room temperature, add it into the mixing pot and continue to stir for 60s, the mixed material can be kneaded without loosening and stirred evenly;

[0019] (5) Make 3 standard Marshall test pieces from the mixed material, weigh 1.3Kg of the mixed material for each test piece, and compact 50 times on both sides;

[0020] (6) Mix one pot aga...

Embodiment 2

[0024] (1) Weigh 1.1Kg of gravel with a crushing value of 9.5-13.2, 2.2Kg of crushed stone with a crushing value of 4.75-9.5, and 1Kg of stone chips, and mix them into aggregate;

[0025] (2) Weigh 12% powder anti-stripping agent, 15% mineral powder, 25% polymer rubber powder and 65% sulphoaluminate cement to make a concentrated curing agent, and weigh the yellow concentrated curing 75g (1.5%) of the agent, put the above aggregate and curing agent into the mixing pot and stir for 30s;

[0026] (3) Weigh 90g (2%) of water, add it into the stirring pot and continue stirring for 30s;

[0027] (4) Weigh 420g (9.5%) of asphalt liquid at room temperature, add it into the mixing pot and continue to stir for 60s, and the mixed material can be kneaded without loosening and stirred evenly;

[0028] (5) Make 3 standard Marshall test pieces from the mixed material, weigh 1.3Kg of the mixed material for each test piece, and compact 50 times on both sides;

[0029] (6) Mix one pot again a...

Embodiment 3

[0033] (1) Weigh 1.25Kg of crushed stones with a crushing value of 9.5-13.2, 2.5Kg of crushed stones with a crushing value of 4.75-9.5, and 1.25Kg of stone chips, and mix them into aggregates;

[0034] (2) Weigh 15% powder anti-stripping agent, 20% mineral powder, 30% polymer rubber powder and 70% sulphoaluminate cement to make a concentrated curing agent, and weigh the yellow curing agent 90g (1.5%), put the above aggregate and curing agent into the stirring pot and stir for 30s;

[0035] (3) Weigh 100g (2%) of water, add it into the stirring pot and continue stirring for 30s;

[0036] (4) Weigh 475g (9.5%) of normal-temperature asphalt liquid, weigh 10g of rock asphalt solution and add it to the normal-temperature asphalt liquid and stir for 2 minutes, then add them into the stirring pot and continue stirring for 60 seconds, and the resulting mixture can be kneaded without loosening;

[0037] (5) Mix 4-6 pots of mixture in this way (too much mixture at one time is not easy ...

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Abstract

The invention discloses an anti-rut agent for cool mixing and cool spreading of an asphalt road. The anti-rut agent mainly comprises a high-rigidity normal-temperature asphalt blend and a concentrated curing agent, wherein the curing agent and the normal-temperature asphalt blend are cured to form reinforced fibers, and a polymer and the curing agent have chemical bonding, thus the interfacial binding is also strengthened, and the interfacial fracture energy can be improved, therefore, the overall toughened, high-strength and consistent gel structure can be formed by modifying the normal-temperature asphalt. In addition, the different amounts of the curing agents have certain impact on demulsification of the asphalt blend. The usage amounts of the curing agent and the emulsifier can be selected according to the construction requirements, and the demulsification time can be controlled so as to guarantee the successful running of the construction.

Description

technical field [0001] The invention relates to road maintenance engineering, in particular to an anti-rutting agent for cold mixing and paving of asphalt roads. Background technique [0002] On-site rutting (and transverse waves), with a depth of 4.0-6.0cm and a wrapping of 2cm, is judged to be serious rutting. Fine milling is adopted, and the milling depth is 2cm below the reference line (6cm for planing). Afterwards, clean and plan the crushed stones in the pit, brush the high-rigidity normal-temperature asphalt mixture in the groove as an adhesive layer, and then fill the cold patch mixed on site into the groove, level it with a special steel scraper, and hold the flat plate by hand The tamping machine tamps 3-5 times. If the pits and bumps can be planed, first use a milling machine to plan. In some places, the small diseased area is not conducive to planing. Use a cutting machine to cut first, and then use an electric hammer to crush the gravel within the cutting rang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/36
Inventor 蔡海军
Owner 南通福伦利新材料有限公司
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