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A warm-mix type anti-rutting composite modifier and its preparation method

A compound modifier and anti-rutting technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of poor low temperature performance and poor compatibility, achieve good drag reduction performance, improve rheology, and improve compatibility sexual effect

Active Publication Date: 2019-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention aims at the problem of poor low-temperature performance of warm asphalt mixture due to the use of polyethylene wax and chlorinated paraffin-70 as warm asphalt additives in the prior art, while inorganic additives and other organic additives are used together as warm asphalt additives However, there is also the problem of poor compatibility, and a warm-mix anti-rutting composite modifier and its preparation method are provided, which have good low-temperature performance, good compatibility, low cost, and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The warm-mix type anti-rutting composite modifier described in this embodiment is composed of the following raw materials in terms of the following mass percentages:

[0044] Special warm mix agent: 3wt%; Wherein, in the said special warm mix agent, in terms of mass percentage, include 30wt% sodium perfluorooctane sulfonate, 30wt% dodecyl glucoside, 40wt% caralamide ;

[0045] Powdered solids: 68wt%;

[0046] Polyethylene wax: 7 wt%;

[0047] Sulfur: 7 wt%;

[0048] Hard asphalt: 15wt%.

[0049] In this example, the powdery solids are obtained from oily sludge (in which the oil content is 90wt%, and the solid content is 5wt%) through the thermal extraction and dehydration process of oily sludge. The process is as follows: send the oily sludge into the centrifuge, and simultaneously The flocculant, that is, polyacrylamide, is added to the centrifuge. The amount of the flocculant added is such that the final powdery solid contains 0.03wt% flocculant. After the oily sl...

Embodiment 2

[0053] The warm-mix type anti-rutting composite modifier described in this embodiment is composed of the following raw materials in terms of the following mass percentages:

[0054] Special warm mix agent: 7.2wt%; Wherein, in the described special warm mix agent, by mass percentage, include the sodium perfluorooctane sulfonate of 32wt%, the alkyl glycoside of 42.6wt% ((C 6 h 11 o 6 ) n R, wherein R=C10, n=2), 25.4wt% carolamide;

[0055] Powdered solids: 38.3 wt%;

[0056] Polyethylene wax: 11.2 wt%;

[0057] Sulfur: 15 wt%;

[0058] Hard asphalt: 28.3wt%.

[0059] The preparation method of the powdery solids described in this example is as follows: send the oily sludge (in which the oil content is 69wt%, and the solid content is 24wt%) into the centrifuge, and at the same time add flocculant, namely oleic acid, to the centrifuge The amount of polyoxyethylene ester and flocculant added is such that the final powdery solid contains 0.05wt% flocculant, and the oily sludge...

Embodiment 3

[0063] The warm-mix type anti-rutting composite modifier described in this embodiment is composed of the following raw materials in terms of the following mass percentages:

[0064] Special warm mix agent: 3.6wt%; Wherein, in the described special warm mix agent, by mass percentage, include the sodium perfluorooctane sulfonate of 43.8wt%, the lauryl glucoside of 31wt% ((C 6 h 11 o 6 ) n R, wherein R=C8 alkyl, n=1), 30wt% carolamide;

[0065] Powdery solids: 38wt%; among them, the inorganic components in the powdery solids account for 70wt%, and the organic components account for 30wt%;

[0066] Polyethylene wax: 18.1wt%;

[0067] Sulfur: 19wt%;

[0068] Hard asphalt: 21.3wt%.

[0069] The preparation method of powdery solid described in the present embodiment is as follows:

[0070] The oily sludge (in which the oil content is 43wt%, and the solid content is 48wt%) is sent into the centrifuge, and at the same time, a flocculant, namely a mixture of cocamidopropyl betain...

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Abstract

The invention discloses a warm mixing type track-resistant compound modification agent and a preparation method thereof and belongs to the technical field of road asphalt. The warm mixing type track-resistant compound modification agent is prepared from a special warm mixing agent, a powdery solid, polyethylene wax, sulfur and hard asphalt according to a formula, wherein the special warm mixing agent is prepared from a fluorocarbon surfactant, alkyl glycoside and carlo amine, the powdery solid is a solid product separated after oily sludge is treated by adopting a sludge thermal-extraction dehydration process. The components in the warm mixing type track-resistant compound modification agent have a synergistic effect, the effect of additive synergism can be played, the mixing and forming temperatures of a warm mixing type asphalt mixed material prepared by applying the warm mixing type track-resistant compound modification agent are lower than 135 DEG C, the warm mixing type track-resistant compound modification agent has the advantages of obviously reducing the mixing and forming temperatures, and the properties of the mixed material are equivalent to the properties of warm mixing asphalt.

Description

technical field [0001] The invention relates to a warm-mix type anti-rutting composite modifier and a preparation method thereof, belonging to the technical field of road asphalt. Background technique [0002] Asphalt mixtures currently used in road engineering are generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial road performance of cold-mix asphalt mixture is poor, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. [0003] Hot mix asphalt mixture is the most widely used mixture with the best road performance. However, in the production process of hot mix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/06C08K13/02C08K5/42C08K3/36C08K3/22C08K3/06C08K5/1545C04B24/36
CPCY02A30/30
Inventor 杨飞飞回军陈保莲宁爱民李宝忠
Owner CHINA PETROLEUM & CHEM CORP
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