A kind of modified emulsified asphalt and preparation method thereof

A technology of emulsifying asphalt and modification, which is applied in the direction of building components, rails, building insulation materials, etc. It can solve the problems of difficult emulsification of modified asphalt, affecting the curing time of mortar, and demanding equipment requirements, etc., to achieve water reduction and defoaming effects Obvious, improve the emulsification effect, improve the effect of performance

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the flexibility and weather resistance of cement asphalt mortar, CN101508848A utilizes modified asphalt, cationic surfactant, nonionic surfactant, stabilizer to prepare modified emulsified asphalt, although the weather resistance and flexibility of CA mortar can be improved, However, the emulsification of modified asphalt is difficult, and the requirements for equipment are harsh. The emulsifier dosage required is large. The total amount of surfactants reaches 7.1%. The amount of water reducer and defoamer added when preparing mortar is also large. The two together account for 3.3% of the total amount of mortar, and the cost is greatly increased. The compatibilizers such as aromatic oil, third-line oil, fourth-line oil, and paraffin oil will affect the curing time of the mortar, thereby affecting the construction progress. In addition, the patent is in Surfactants are also added when mixing the mortar, the purpose is to make the modified emulsified asphalt meet the requirements of the mixing time, which not only adds another process to the site construction, the operation is troublesome, but also further increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 6470g of Liaohe crude oil straight-run asphalt with a penetration of 108 (1 / 10mm), heat it to 115°C for later use, and obtain material I; at room temperature, add 10g of calcium lignosulfonate and 7g of methyl silicone oil , 80g of isopropanol, after mixing evenly, slowly add 1g of carboxymethylcellulose in a stirring state, stir fully to make a paste, and obtain material II; Ammonium 30g, anionic emulsifier fat (18) alcohol polyoxyethylene (3) sodium ether sulfate 30g, zwitterionic emulsifier N-cocoyl-β-alanine sodium 10g, nonionic emulsifier oleyl alcohol poly 10g of oxyethylene (20) ether and 5g of calcium chloride were dissolved in 3247g of water together, and the temperature was kept at 45°C to obtain material III; 100g of styrene-butadiene latex with a concentration of 60% was accurately weighed as material IV; then material I, material II, material III, and material IV are transported to the colloid mill respectively, and after being uniformly dispersed by t...

Embodiment 2

[0040] Take 6000g of Oman crude oil solvent deoiled asphalt from Maoming Petrochemical Company with a penetration of 98 (1 / 10mm), heat it to 125°C for later use, and obtain material I; Oxypropylene glycerin (GPE30) 5g, ethanol 60g, tert-butanol 100g, after mixing evenly, slowly add carboxyethyl cellulose 5g under stirring state, fully stir evenly to make a paste, and obtain material II; cationic emulsification Agent octadecyltrimethylammonium chloride 125g, anionic emulsifier fatty (18) amine polyoxyethylene (4) sodium sulfate 55g, zwitterionic emulsifier N-tallow-β-iminodipropionic acid 69g of disodium, 50g of non-ionic emulsifier octylphenol polyoxyethylene (20) ether, and 15g of ammonium chloride were dissolved in 3276g of water, stirred well, prepared into soap liquid and kept at 65°C to obtain material III Accurately take by weighing 200g concentration is the chloroprene latex of 55% as material IV; Then material I, material II, material III, material IV are transported i...

Embodiment 3

[0042] Take 5900g of Kuwait crude oil oxidized asphalt from Qilu Petrochemical Company with a penetration of 62 (1 / 10mm), and heat it to 155°C to obtain material I; (C18, concentration 30wt%) 9g, propanol 320g, after fully mixing evenly, slowly add 3g of hydroxyethyl cellulose under stirring state, stir well to make a paste, and obtain material II; take cationic emulsifier ten Dialkyltrimethylammonium bromide 55g, anionic emulsifier sodium lauryl sulfate 90g, zwitterionic emulsifier N-lauryl-β-alanine 30g, nonionic emulsifier lauryl alcohol polyoxyethylene (20) 30g of ether and 10g of magnesium chloride were dissolved in 3278g of water at 55°C, stirred well, prepared into a soap solution and kept at a temperature of 55°C to obtain material III; accurately weighed 250g of nitrile latex with a concentration of 50% as Material IV; then transport material I, material II, material III, and material IV to the colloid mill, and after being uniformly dispersed by the colloid mill, it ...

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Abstract

The invention discloses modified emulsified asphalt and a preparation method thereof. The modified emulsified asphalt comprises the following components by weight: 55%-65% of asphalt, 0.3%-1.5% of cationic emulsifiers, 0.3%-1.5% of anionic emulsifiers, 0.05%-0.15% of stabilizing agents, 0.01%-0.05% of thickening agents, 0.1%-0.5% of water reducers, 0.8%-3.5% of alcohol, 1%-4% of polymer latex, and 30%-35% of water. The modified emulsified asphalt of the invention is good in miscibility with cement, good in storage stability, and low in oversize residual amount, and also has the advantages of freezing resistance, no bleeding, good flexibility, and good caking property. The modified emulsified asphalt of the invention is especially applicable to cement injection asphalt mortar for preparing plate-type ballastless tracks in high speed railway building.

Description

technical field [0001] The invention relates to a modified emulsified asphalt and a preparation method thereof, in particular to a modified emulsified asphalt used for cement asphalt mortar and a preparation method thereof. Background technique [0002] With the improvement of the level of railway construction and the requirements for railway transport capacity, the demand for high-speed railway and urban light rail continues to increase. In order to improve the stability of train running at high speed and reduce the noise caused by vibration during train operation, it is generally necessary to use plate-type ballastless track technology. The slab ballastless track technology is to lay two tracks on a reinforced concrete slab (called track slab), and lay a 3-5cm thick shock-absorbing layer under the track slab. The shock-absorbing layer is made of emulsified asphalt, cement, fine Sand and other mineral materials form cement asphalt mortar (Cement Asphalt mortar, referred to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K3/16C08K5/05C08J3/03C04B26/26E01B27/18
Inventor 陈保莲范思远张静陈闯宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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