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Anionic emulsified asphalt and preparation method thereof

A cement emulsified asphalt, anion technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of limited source of raw materials, narrow temperature adaptation range, complex production process, etc., to achieve excellent physical and mechanical properties, temperature adaptation range. Wide, good storage stability

Active Publication Date: 2013-08-14
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high and low temperature stability of its emulsified asphalt is poor, and the early strength of cement emulsified asphalt mortar is low, and the stability and high and low temperature construction performance of cement emulsified asphalt mortar need to be improved
[0004] In a word, the emulsified asphalt used for the existing cement emulsified asphalt mortar mainly has poor stability, high ionic strength, and poor adaptability to the cement system, which makes the prepared cement emulsified asphalt mortar workable for a short time, with a narrow temperature range, easy to layer, and easy to fill. A series of problems such as poor performance and low early strength
Although there are similar reports abroad, there are problems such as high prices, limited sources of raw materials, and complicated production processes.

Method used

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  • Anionic emulsified asphalt and preparation method thereof
  • Anionic emulsified asphalt and preparation method thereof
  • Anionic emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, the preparation of emulsified asphalt

[0035] The raw materials used in the emulsified asphalt provided by this implementation are as follows: asphalt is CNOOC 36-1AH-90; anionic surfactant is hexadecyl sulfonate; Average molecular weight is 646); Additive 1 is sodium carboxymethylcellulose (number average molecular weight is 6400 ± 1000), and the weight percentage of above-mentioned components is as shown in table 1.

[0036] Concrete preparation method comprises the following steps:

[0037] (1) Heat the above-mentioned asphalt to 130°C, measure it for later use;

[0038] (2) Dissolve the above-mentioned sodium carboxymethylcellulose in cold water, dilute it in a ratio of 1:100, and set aside;

[0039] (3) Dissolve hexadecyl sulfonate, octylphenol polyoxyethylene ether and diluted sodium carboxymethyl cellulose in water at about 60°C according to the above weight ratio, prepare soap liquid, and use 2mol / l NaoH aqueous solution to adjust the pH value...

Embodiment 2

[0042] Embodiment 2, the preparation of emulsified asphalt

[0043] The raw materials adopted in the emulsified asphalt provided by this implementation are as follows: asphalt is CNOOC 36-1AH-90; anionic surfactant is lauryl sulfate; nonionic surfactant is polyoxyethylene lauryl ether (number average molecular 694); auxiliary agent 1 is calcium chloride, auxiliary agent 2 is polyacrylamide (number average molecular weight is 6 million to 20 million), and the weight percentages of the above components are shown in Table 1.

[0044] Concrete preparation method comprises the following steps:

[0045] (1) Heat the above-mentioned asphalt to 130°C, measure it for later use;

[0046] (2) Dissolve the above-mentioned polyacrylamide in cold water, dilute it in a ratio of 1:100, and set aside;

[0047] (3) Dissolve lauryl sulfate, polyoxyethylene lauryl ether, calcium chloride and diluted polyacrylamide in water at about 60°C according to the above weight ratio, prepare soap, and use...

Embodiment 3

[0050] Embodiment 3, the preparation of emulsified asphalt

[0051] The raw materials used in the emulsified asphalt provided by this implementation are as follows: asphalt is CNOOC 36-1AH-70; anionic surfactant is dodecylbenzenesulfonate; nonionic surfactant is nonylphenol polyoxyethylene ether ( The number average molecular weight is 660); the auxiliary agent 1 is polyvinyl alcohol (the number average molecular weight is 6 million to 20 million), and the weight percentages of the above components are shown in Table 1.

[0052] Concrete preparation method comprises the following steps:

[0053] (1) Heat the above-mentioned asphalt to 135°C, measure it for future use;

[0054] (2) Dissolve the above-mentioned polyvinyl alcohol in cold water, dilute it in a ratio of 1:10, and set aside;

[0055] (3) Dissolve dodecylbenzenesulfonate, nonylphenol polyoxyethylene ether and diluted polyvinyl alcohol in water at about 60°C according to the above weight ratio, prepare soap, and adj...

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Abstract

The invention provides anionic emulsified asphalt and a preparation method thereof. The cement emulsified asphalt comprises the following components in percentage by weight: 55 to 65 percent of asphalt, 0.5 to 5 percent of anionic surfactant, 0.02 to 4 percent of aid, and the balance of water. The anionic surfactant can be one of tall oil sulfonate, alkyl sulfonate, alkylbenzene sulfonate, alkyl sulfate and lignosulfonate. The emulsified asphalt provided by the invention has the advantages of good storage stability, wide temperature adapting range, good adaptability with cement, good compatibility and the like; and the cement emulsified asphalt mortar prepared by using the emulsified asphalt has good flow property, long service life and wide temperature adapting range, does not produce dissociation or lamination, has excellent physical and mechanical properties, and fully meets the requirement of construction, so that the emulsified asphalt can be effectively used for the cement emulsified asphalt mortar in plate type ballastless tracks of high speed railways.

Description

technical field [0001] The invention relates to an anionic emulsified asphalt and a preparation method thereof, which are suitable for intercity high-speed railways, urban high-speed light rails and urban subways. Background technique [0002] Slab ballastless track is one of the important structural forms of high-speed railway or urban light rail ballastless track. It is the most mature technology in the world. Reserve a gap of 3cm to 5cm between them, pour cement emulsified asphalt mortar, and form a uniform filling cushion with both rigidity and elasticity after curing. Cement emulsified asphalt mortar is the core technology of slab ballastless track. Emulsified asphalt is the key component material of cement emulsified asphalt mortar, and its performance directly affects the working performance and durability of cement emulsified asphalt mortar. Anionic emulsified asphalt specially used for cement emulsified asphalt mortar should not only meet the conventional properti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08J3/03C04B26/26
Inventor 王金凤张玉贞范维玉赵品晖杨炎生南国枝董爽
Owner CHINA NAT OFFSHORE OIL CORP
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