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Road bentonite-based emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and bentonite, which is applied in the field of building materials, can solve the problems of poor long-term storage stability, unstable product quality, and poor adaptability of asphalt, and achieve super storage stability, good economic and social benefits, and strong adhesion. Effect

Inactive Publication Date: 2012-08-22
辽宁省交通科学研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emulsified asphalt used for slurry seals is generally of slow-cracking type. At present, the cationic type is mainly used, but the cost of cationic emulsified asphalt used for slurry seals is high, the long-term storage stability is poor, and the product quality is unstable. Poor adaptability to various asphalt

Method used

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  • Road bentonite-based emulsified asphalt and preparation method thereof
  • Road bentonite-based emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Bentonite-based emulsified asphalt for road use, its components are calculated by mass percentage:

[0021] Asphalt: 60%

[0022] Bentonite: 1.5%

[0023] Nonionic surfactant: 0.5%

[0024] Anionic surfactant: 0.5%

[0025] water: balance

[0026] The nonionic surfactant is selected from phenethylphenol polyoxyethylene ether; the anionic surfactant is selected from sodium dodecylsulfonate. The preparation method of bentonite-based emulsified asphalt for road use is as follows:

[0027] The proportion of raw materials is based on the above-mentioned bentonite-based emulsified asphalt composition percentage, that is, in terms of mass percentage: asphalt 60%, bentonite 1.5%, nonionic surfactant 0.5%, anionic surfactant 0.5%, and the balance is water. The raw material requirements are as mentioned above, the non-ionic surfactant is selected from phenethylphenol polyoxyethylene ether; the anionic surfactant is selected from sodium dodecylsulfonate.

[0028] Add bentoni...

Embodiment 2

[0030] Bentonite-based emulsified asphalt for road use, its components are calculated by mass percentage:

[0031] Asphalt: 65%

[0032] Bentonite: 2.0%

[0033] Nonionic surfactant: 0.8%

[0034] Anionic surfactant: 0.8%

[0035] water: balance

[0036] The non-ionic surfactant is nonylphenol polyoxyethylene ether; the anionic surfactant is sodium dodecylbenzenesulfonate. The preparation method of bentonite-based emulsified asphalt for road use is as follows:

[0037] The proportion of raw materials is based on the above-mentioned bentonite-based emulsified asphalt composition percentage, that is, in terms of mass percentage: asphalt 65%, bentonite 2.0%, nonionic surfactant 0.8%, anionic surfactant 0.8%, and the balance is water. The raw material requirements are as mentioned above, nonylphenol polyoxyethylene ether is selected as the nonionic surfactant; sodium dodecylbenzenesulfonate is selected as the anionic surfactant.

[0038] Add bentonite to water to form a susp...

Embodiment 3

[0040] Bentonite-based emulsified asphalt for road use, its components are calculated by mass percentage:

[0041] Asphalt: 55%

[0042] Bentonite: 1.0%

[0043] Non-ionic surfactant: 0.3%

[0044] Anionic surfactant: 0.2%

[0045] water: balance

[0046] The non-ionic surfactant is methylated nonylphenol polyoxyethylene ether; the anionic surfactant is sodium lauryl sulfate. The preparation method of bentonite-based emulsified asphalt for road use is as follows:

[0047] The proportion of raw materials is based on the above-mentioned bentonite-based emulsified asphalt composition percentage, that is, in terms of mass percentage: asphalt 55%, bentonite 1.0%, nonionic surfactant 0.3%, anionic surfactant 0.2%, and the balance is water. The raw material requirements are as mentioned above, the non-ionic surfactant is methylated nonylphenol polyoxyethylene ether; the anionic surfactant is sodium lauryl sulfate.

[0048] Add bentonite to water to form a suspension, adjust the...

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Abstract

The invention relates to road bentonite-based emulsified asphalt and a preparation method thereof. The emulsified asphalt comprises the following components in percentage by weight: 55 to 65 percent of asphalt, 1.0 to 2.0 percent of bentonite, 0,3 t 0.8 percent of nonionic surfactant, 0.2 to 0.8 percent of anion surfactant and the balance of water. The preparation method comprises the following steps of: adding the bentonite into the water to form turbid liquid; regulating the pH value of the turbid liquid to be between 9 and 10; adding the nonionic surfactant and the anion surfactant to formemulsifier turbid liquid; heating the emulsifier turbid liquid to between 55 and 65 DEG C; and melting the asphalt by heating, and grinding aqueous solution of emulsifier and the asphalt by a colloidmill simultaneously to obtain the road bentonite-based emulsified asphalt. In the method, the bentonite is taken as a main emulsifier, a stabilizer, a thickener and a dispersing agent, and a few other surfactants are mixed to be used as an auxiliary emulsifier, so the product has ultrastrong storage stability and high adhesivity with aggregates, and can improve the water damage resistance of asphalt mixtures.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to the asphalt material technology for roads, in particular to bentonite-based emulsified asphalt for roads and a preparation method thereof. Background technique [0002] As an economical and effective preventive maintenance technology, slurry seal has been widely used at home and abroad. In recent years, slurry seal has achieved unprecedented development in our country. The slurry seal layer is a kind of asphalt mixture formed by mixing emulsified asphalt as a binder with well-graded mineral materials, fillers, water and additives in a certain proportion, and spreading it on the road in time and evenly. Material thin layer. Paving the slurry seal layer on the old road surface can obviously improve or restore the performance of the original road surface; paving it on the base of the new road surface can play the role of waterproof seal layer and construction health. Emul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K3/34C08J3/03C04B26/26E01C7/24
Inventor 田泽峰李洪斌陈晓龙刘云全范兴华杨彦海
Owner 辽宁省交通科学研究院有限责任公司