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Composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement and preparation method

A technology for asphalt pavement and compound oil, which is applied in asphalt coatings, chemical instruments and methods, and other chemical processes, etc., can solve the problems of limited application, shortened service life of melting ice and snow pavement, and easy demulsification and precipitation of salts.

Active Publication Date: 2022-02-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low-freezing-point pavements are prone to demulsification and precipitation of salts, which shortens the service life of ice-melting pavements and limits their large-scale application.

Method used

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  • Composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement and preparation method
  • Composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement and preparation method

Examples

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Effect test

preparation example Construction

[0024] The preparation method of the composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement of the present invention comprises the following steps:

[0025] A. First, the mass ratio of 85-90 parts of asphalt (using one of coal tar pitch, petroleum pitch or natural asphalt, base asphalt can be used) and 8-12 parts of waste engine oil with a mass ratio of 2-3 parts of kerosene ( D80 solvent oil, D60 solvent oil or D40 solvent oil) are evenly and accurately weighed according to the proportion, stirred in a heating furnace, the temperature is 50-60°C, and the stirring time is 20-30min. covering liquid;

[0026] B. Fully mix the low-freezing point material coating solution obtained in step A, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, and use the heating furnace again at a temperature of 50-60 ° C, and the stirring time is After stirring for 8-15 minutes, use a sieve to filte...

Embodiment 1

[0032] A. The mass ratio of 88 parts of coal tar pitch and 10 parts of waste engine oil and the mass ratio of 2 parts of D80 solvent oil are uniformly and accurately weighed according to the proportion, mixed, stirred, and stirred at 60 ° C for 20 minutes to obtain a low freezing point material coating liquid;

[0033] B. Fully mix the low-freezing point material coating liquid, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stir at 50°C for 10 minutes, filter out the solid particles with a sieve and dry them to obtain a composite oil film package Type low freezing point material;

[0034] C. Mix 50 parts of coal tar pitch, 1.0 part of fast-cracking and fast-setting emulsifier BH-K, 49 parts of water at 60°C, and 0.01 part of dilute hydrochloric acid in a mass ratio, and use a colloid mill to prepare emulsified pitch;

[0035] D. Fully mix the composite oil film-wrapped low-freezing point material obtained in...

Embodiment 2

[0037] A. The mass ratio of 85 parts of coal tar pitch and 12 parts of waste engine oil and the mass ratio of 2.5 parts of D80 solvent oil are evenly and accurately weighed according to the proportion, mixed, stirred, and stirred at 55°C for 25 minutes to obtain a low freezing point material coating liquid;

[0038] B. Fully mix the low-freezing point material coating solution, 7 parts of calcium acetate, 4 parts of magnesium acetate and 4 parts of sodium nitrite according to the mass ratio, stir at 55 °C for 12 minutes, filter out the solid particles with a sieve and dry them to obtain a composite oil film wrap Type low freezing point material;

[0039] C. Mix 50 parts of coal tar pitch, 0.6 part of fast-cracking and fast-setting emulsifier BH-K, 49 parts of water at 70°C, and 0.02 part of dilute hydrochloric acid in a mass ratio, and use a colloid mill to prepare emulsified pitch;

[0040] D. Fully mix the composite oil film-wrapped low-freezing point material obtained in st...

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Abstract

The invention discloses a composite oil film-wrapped low-freezing-point material spray liquid for asphalt pavement and a preparation method thereof, comprising 135-140 parts of asphalt, 49 parts of water, 0.01-0.02 parts of dilute hydrochloric acid, 0.6-1.2 parts of emulsifier, and 8 parts of waste engine oil ‑12 parts, 2‑3 parts of solvent kerosene, 7 parts of calcium acetate, 4 parts of magnesium acetate, 4 parts of sodium nitrite. Add calcium acetate, magnesium acetate, and sodium nitrite mixture into the mixed solution formed by stirring asphalt, waste engine oil and kerosene at medium temperature; obtain an oil-film-wrapped low-freezing point material, filter the mixed solution, dry it, and add an emulsifier , water, dilute hydrochloric acid, and emulsified asphalt made of asphalt, and stir to obtain a composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement. The spray liquid not only has high ice suppression performance, but also has the characteristics of energy saving, rapid traffic opening and multiple actions. It is an organic-inorganic composite material with good processing performance that can be used to suppress thin ice disasters on asphalt pavements.

Description

technical field [0001] The invention relates to the technical field of anti-icing and deicing for road engineering, in particular to a composite oil film-wrapped low-freezing point material spray liquid for asphalt pavement and a preparation method thereof. Background technique [0002] Low-freezing-point pavement has attracted more and more attention because of its green environmental protection concept and good ice-melting effect. At present, asphalt pavement deicing technology mainly adopts artificial deicing, mechanical deicing and spraying deicing salt. However, the efficiency of artificial snow removal is low, and mechanical and chemical deicing agents will cause damage to pavement structure and auxiliary facilities, corrosion of steel bars, and pollution of soil and water environment. Moreover, the above-mentioned snow and ice removal technology needs to occupy traffic resources in the process of removing ice and snow, which affects the normal operation of the road. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D7/63C09D7/62C09K3/18
CPCC09D195/00C09D7/63C09D7/62C09K3/18C08K9/10C08K5/098C08K3/28
Inventor 张倩方志河王永兵
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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