Frost-resistant emulsified asphalt for roads and preparation method thereof

A technology of emulsified asphalt and frost resistance, applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, building components, building insulation materials, etc., can solve the problems of emulsion storage stability, poor adhesion of mixtures, Asphalt adhesion deteriorates and other problems, to achieve the effect of improved frost resistance and Marshall stability, good stability and freeze-thaw resistance, and high adhesion

CN102234433AActive Publication Date: 2011-11-09CHINA PETROLEUM & CHEM CORP +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: CHINA PETROLEUM & CHEM CORP
Publication Date: 2011-11-09

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Abstract

The invention discloses frost-resistant emulsified asphalt for roads and a preparation method thereof. The emulsified asphalt comprises asphalts, cationic emulsifiers, anionic emulsifiers, a non-ionic emulsifier, alcohols and water, wherein the alcohols are one or more of ethanol, propanol, isopropanol and tert butyl alcohol. The emulsified asphalt has the following advantages: through synergistic action of the compound emulsifier and lower fatty alcohols, without adding such diluents as diesel or kerosene, the emulsified asphalt can be used for shortening the time of moisture volatilization,speeding up mixture hardening and improving the frost resistance, is not frozen at minus 5-minus 25 DEG C, maintains such excellent properties of the original asphalts as caking property and can be used for avoiding the low-temperature shrinkage crack or freeze thawing and looseness of a mixture in winter. The frost-resistant emulsified asphalt is used for highway maintenance and repair.

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Description

technical field

[0001] The invention relates to a frost-resistant emulsified asphalt for roads and a preparation method thereof, which can be used for road maintenance and repair. Background technique

[0002] In the process of road maintenance and repair, emulsified asphalt is one of the commonly used materials. Compared with hot asphalt, it has the advantages of energy saving, convenient use, and environmental protection. However, the emulsified asphalt used in the past has the disadvantage of poor frost resistance, and it is easy to break the emulsification due to freezing during winter storage, so that it cannot continue to be used. In addition, the pavement paved with emulsified asphalt is prone to low-temperature shrinkage cracking or freeze-thaw loosening in winter, which is also caused by the poor frost resistance of the emulsified asphalt used. The past emulsified asphalt can only be used when the temperature is higher than -5°C. When the temperature is lower than...

Claims

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