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Warm-mixed asphalt additive and preparation method thereof

A warm-mix asphalt and additive technology, which is applied in the field of asphalt additives and its preparation, can solve problems affecting asphalt performance, unfavorable energy saving and consumption reduction, and environmental pollution, so as to increase the softening point, reduce environmental pollution and protect the health of construction workers damage, the effect of reducing exhaust emissions

Inactive Publication Date: 2009-12-16
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, both hot-mix asphalt and cold-mix asphalt have disadvantages to a certain extent, which may affect the performance of asphalt, or are not conducive to energy saving and consumption reduction, and will pollute the environment

Method used

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  • Warm-mixed asphalt additive and preparation method thereof
  • Warm-mixed asphalt additive and preparation method thereof
  • Warm-mixed asphalt additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Prepare the warm mix asphalt additive of the present invention according to the parts by weight of each component in Example 1 in the following table 1:

[0051] (1) Take 19 grams of deionized water and add it to a three-necked flask with a stirrer, add 1 gram of low molecular weight polyacrylamide under stirring at room temperature until it dissolves evenly, and prepare a polyacrylamide aqueous solution for use;

[0052] (2) Take 19 grams of deionized water and add it to a four-necked flask equipped with a stirrer, a thermometer in the range of 0 to 100 ° C and a reflux condensing device, add 1 gram of poly Vinyl alcohol, heated up to 90°C, stirred and dissolved for 20 minutes until uniformly dissolved, and made into an aqueous solution of polyvinyl alcohol for use;

[0053] (3) Add the remaining 592 grams of deionized water into the dissolved 20 grams of polyvinyl alcohol aqueous solution, start stirring, the speed of the stirrer is 150 rpm, and keep the temperature i...

Embodiment 2

[0055] Prepare the warm mix asphalt additive of the present invention according to the parts by weight of each component in Example 2 in the following table 1:

[0056] (1) Take 19 grams of deionized water and add it to a three-necked flask with a stirrer, add 1 gram of low molecular weight polyacrylamide under stirring at room temperature until it dissolves evenly, and prepare a polyacrylamide aqueous solution for use;

[0057] (2) Take 19 grams of deionized water and add it to a four-necked flask equipped with a stirrer, a thermometer in the range of 0 to 100 ° C and a reflux condensing device, add 1 gram of poly Vinyl alcohol, heated up to 90°C, stirred and dissolved for 20 minutes until uniformly dissolved, and made into an aqueous solution of polyvinyl alcohol for use;

[0058] (3) Add the remaining 592 grams of deionized water into the dissolved 20 grams of polyvinyl alcohol aqueous solution, start stirring, the speed of the stirrer is 150 rpm, and keep the temperature i...

Embodiment 3

[0060] Prepare the warm mix asphalt additive of the present invention according to the parts by weight of each component in Example 3 in the following table 1:

[0061] (1) Take 38 grams of deionized water and add it to a three-necked flask with a stirrer, add 2 grams of low molecular weight polyacrylamide under stirring at room temperature until it dissolves evenly, and prepare a polyacrylamide aqueous solution for use;

[0062] (2) Take 38 grams of deionized water and add it into a four-necked bottle with a stirrer, a thermometer in the range of 0 to 100 ° C and a reflux condensing device, add 2 grams of poly Vinyl alcohol, heated up to 92°C, stirred and dissolved for 20 minutes until uniformly dissolved, and made into an aqueous solution of polyvinyl alcohol for use;

[0063] (3) Add the remaining 604 grams of deionized water into the dissolved 40 grams of polyvinyl alcohol aqueous solution, start stirring, the stirrer speed is 150 rpm, and keep the temperature in the four-...

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Abstract

The invention discloses a warm-mixed asphalt additive and a preparation method thereof. The additive is prepared by the following steps: adding deionized water into prepared polyvinyl alcohol water solution, then adding rosin quaternary ammonium salt, aromatic quaternary ammonium salt emulsifier, aliphatic quaternary ammonium salt emulsifier and nonionic surfactant into the water solution in turn, stirring and dissolving the mixture, adding prepared polyacrylamide water solution and triethanolamine into the mixture, and mixing and stirring the mixture till the mixture is evenly dissolved so as to obtain a finished product. During application, when the temperature of the asphalt mixture reaches 110 to 130 DEG C, 5 percent of the diluent of the additive is added by the mass of asphalt in a spraying mode so as to realize the warm mixing technology of mixing and spreading the asphalt mixture; and test data show that various road indexes of the warm-mixed asphalt mixture are not lower than that of hot-mixed asphalt mixture under the condition that the mixing and molding temperature of the warm-mixed asphalt mixture is obviously reduced relative to the hot-mixed asphalt mixture.

Description

technical field [0001] The invention relates to an asphalt additive and a preparation method thereof, in particular to a kind of warm-mix asphalt which is used in construction engineering and can make the production and construction temperature between the hot-mix asphalt mixture and the cold-mix asphalt mixture Additives and methods for their preparation. Background technique [0002] At present, there are usually two kinds of asphalt mixture preparation processes for highway asphalt pavement construction: hot mixing and cold mixing. [0003] After decades of development, the hot-mix asphalt mixture road construction technology has become more and more mature, and its application effect is obvious to all. However, with the development of society and the improvement of people's awareness, problems such as thermal aging, high energy consumption and excessive emission of harmful gases in the process of mixing, transportation and paving of hot mix asphalt mixture have graduall...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08K5/19C08K5/17C08K5/06C08L33/26C08L29/04C08L93/04
CPCY02A30/30
Inventor 孙希明逯文启孙浩川李雅立
Owner TIANJIN UNIV
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