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Emulsion-type warm mix asphalt capable of reducing water damage

A warm-mix asphalt and emulsification-type technology, which is applied to climate change adaptation, building insulation materials, building components, etc., can solve problems such as water loss, inability to completely evaporate water, and adverse effects on water stability of warm-mix asphalt mixture, and achieve Effect of overcoming rutting damage, enhancing low-temperature crack resistance and anti-aging performance

Inactive Publication Date: 2013-10-02
CHENGDU JIAXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Warm mix asphalt technology was first put into use in Europe in 1995, and domestic research on warm mix asphalt technology began after 2005. The RH warm mix asphalt modifier material preparation was first developed by the Highway Science Research Institute of the Ministry of Communications. Afterwards, warm mix asphalt has been actively developed and researched by many domestic scientific research institutions and enterprises and institutions, and has achieved good technological breakthroughs, but still faces some problems: for example, due to the relatively high mixing temperature and molding temperature of warm mix asphalt mixture The temperature is about 100~130℃ (relative to the temperature of hot-mix asphalt 160~180℃), the water remaining in the aggregate cannot be completely evaporated during mixing, which will adversely affect the water stability of warm-mix asphalt mixture and cause water damage

Method used

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  • Emulsion-type warm mix asphalt capable of reducing water damage
  • Emulsion-type warm mix asphalt capable of reducing water damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In this example, the raw material components and dosages for preparing emulsified warm-mix asphalt that can reduce water loss are:

[0015] 580kg of 90# asphalt, 38kg of perfluorinated liquid silicone rubber (produced by Dow Corning, USA), 22kg of dodecyl dimethyl benzyl ammonium chloride, and 360kg of water.

[0016] The preparation process is as follows: first mix water and dodecyl dimethyl benzyl ammonium chloride according to the formula, then thoroughly mix through an emulsifier to form a soap liquid and heat it to 45 ° C ~ 80 ° C; then mix the soap liquid with 90 #Asphalt is ground and mixed in a colloid mill to obtain emulsified asphalt, and then the emulsified asphalt is quickly mixed with perfluorinated liquid silicone rubber heated to 30°C to 50°C in a mixer, and fully stirred to obtain warm-mixed asphalt, and then sealed save.

Embodiment 2

[0018] The preparation process is the same as in Example 1, except that the raw material components and dosages for preparing emulsified warm-mix asphalt capable of reducing water loss are:

[0019] 550kg of 90# asphalt, 30kg of perfluorinated liquid silicone rubber (produced by Dow Corning, USA), 20kg of dodecyl dimethyl benzyl ammonium chloride, and 400kg of water.

Embodiment 3

[0021] The preparation process is the same as in Example 1, except that the raw material components and dosages for preparing emulsified warm-mix asphalt capable of reducing water loss are:

[0022] 550kg of 90# asphalt, 30kg of perfluorinated liquid silicone rubber (produced by Dow Corning, USA), 20kg of dodecyl dimethyl benzyl ammonium chloride, and 300kg of water.

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Abstract

The invention discloses emulsion-type warm mix asphalt capable of reducing water damage, which is characterized in that the warm mix asphalt is prepared from the following raw materials in parts by weight: 55-65 parts of 990# asphalt, 3-5 parts of liquid fluorinated modifying agent, 2-4 parts of cationic surface active agent and 30-40 parts of water. By adopting the liquid fluorinated modifying agent, the emulsion-type warm mix asphalt capable of reducing water damage provided by the invention has good chemical stability and high-temperature aging-resistant performance, also can reduce the water damage generated by dampness of collected materials of a general warm mix asphalt mixed material at low temperature, and can prevent unpredictable rutting damage on the asphalt pavement, which is caused by the aging of asphalt cements.

Description

technical field [0001] The invention relates to an emulsified warm-mix asphalt capable of reducing water loss. Background technique [0002] Warm mix asphalt technology was first put into use in Europe in 1995, and domestic research on warm mix asphalt technology began after 2005. The RH warm mix asphalt modifier material preparation was first developed by the Highway Science Research Institute of the Ministry of Communications. Afterwards, warm mix asphalt has been actively developed and researched by many domestic scientific research institutions and enterprises and institutions, and has achieved good technological breakthroughs, but still faces some problems: for example, due to the relatively high mixing temperature and molding temperature of warm mix asphalt mixture The temperature is about 100~130℃ (relative to the temperature of hot-mix asphalt 160~180℃), the water remaining in the aggregate cannot be completely evaporated during mixing, which will adversely affect th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L83/08C08J3/03C04B26/26
CPCY02A30/30
Inventor 钱炳黄泰东雷欣王玉树罗小庆刘顺波胡潮胡杨杨
Owner CHENGDU JIAXIN TECH