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Interface modifier as well as preparation method, application and using method thereof

A modifier and interface technology, applied in the field of interface modifier and its preparation, can solve problems such as road surface damage, achieve the effects of increasing chemical bond force, improving interface interaction, improving adhesion level and adhesion durability

Pending Publication Date: 2021-07-09
FUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relevant studies believe that this method mainly uses the alkalinity of inorganic minerals and the metal cations it provides to enhance the adhesion of asphalt to aggregates. The asphalt contains a small amount of carboxylic acid, which makes the asphalt acidic and easy to adhere to the surface of the aggregate. But when encountering water, because water molecules are polar substances, it is easier to replace asphalt and combine with aggregates, so that the asphalt peels off from the surface of the pellets, causing damage to the road surface, and cannot exert the anti-stripping effect for a long time

Method used

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  • Interface modifier as well as preparation method, application and using method thereof
  • Interface modifier as well as preparation method, application and using method thereof
  • Interface modifier as well as preparation method, application and using method thereof

Examples

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preparation example Construction

[0025] Based on the same inventive concept, the embodiment of the present application also provides a preparation method of the above-mentioned interface modifier, including the following steps:

[0026] Dissolve the iron salt in water, then add hydrochloric acid, and stir evenly to obtain the interface modifier.

[0027] Based on the same inventive concept, the embodiment of the present application also provides the application of the above-mentioned interface modifier in improving the adhesion between asphalt and acidic aggregates.

[0028] Based on the same inventive concept, the embodiment of the present application also provides a method for using the above interface modifier, including the following steps:

[0029] S1. Soak the acidic aggregate in the above-mentioned interface modifier, take it out and dry it;

[0030] S2. Mixing the dried acid aggregate with asphalt.

[0031] It should be noted that acidic aggregates in this application include gneiss aggregates, gran...

Embodiment 1

[0042] The embodiment of the present application provides an interface modifier, the preparation method of which is: in parts by weight, 4 parts of FeCl 3 The powder is added to 1000 parts of water to dissolve it into FeCl 3 solution, and then add 1 part of hydrochloric acid, and stir evenly to obtain an interface modifier, wherein the mass fraction of hydrochloric acid is 25%.

[0043] The using method of above-mentioned interfacial modifier, comprises the following steps:

[0044] S1. Wash the acidic aggregate gneiss and soak it in the interface modifier for 5 minutes, then dry it in a drying oven at 105°C for 10 hours;

[0045] S2. Mixing the dried acid aggregate gneiss with asphalt to obtain a mixture.

[0046] Specifically, in the embodiment of the present application, three kinds of road petroleum asphalts with certain differences in performance are used, and the performance of the asphalt is shown in Table 2.

[0047] Table 2 - Road Petroleum Asphalt Properties

[0...

Embodiment 2

[0061] The embodiment of the present application provides an interface modifier, the preparation method of which is: in parts by weight, 10 parts of FeCl 3 The powder is added to 1000 parts of water to dissolve it into FeCl 3 solution, and then add 1 part of hydrochloric acid, and stir evenly to obtain an interface modifier, wherein the mass fraction of hydrochloric acid is 25%.

[0062] The using method of above-mentioned interfacial modifier, comprises the following steps:

[0063] S1. Wash the acidic aggregate gneiss and soak it in the interface modifier for 5 minutes, then dry it in a drying oven at 105°C for 10 hours;

[0064] S2. Mixing the dried acid aggregate gneiss with asphalt to obtain a mixture.

[0065] Specifically, 70# road ordinary petroleum asphalt is used in the embodiment of the present application, and the performance of the asphalt is shown in Table 4.

[0066] Table 4-70# road petroleum asphalt properties

[0067]

[0068] According to the above-me...

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Abstract

The invention provides an interface modifier as well as a preparation method, an application and a using method thereof. The interface modifier is prepared from the following raw materials in parts by weight: 4 to 20 parts of ferric salt, 800 to 1200 parts of water and 0.5 to 1 part of acid. The interface modifier comprises the ferric salt, the acid aggregate is treated through the interface modifier, iron ions are introduced to the bonding interface of asphalt and the acid aggregate, the stable chemical bonding force on the interface can be increased, the interface interaction between the asphalt and the acid aggregate is improved, and the adhesion grade and adhesion durability of asphalt-acid stone are improved.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement materials for road engineering, in particular to an interface modifier and its preparation method, application and use method. Background technique [0002] Asphalt pavement is widely used in various roads. However, various diseases such as water damage, rutting, looseness and peeling of pavement are becoming more and more prominent, among which water damage has become the most important and most harmful type of damage. In order to reduce water damage and ensure the adhesion between aggregates and asphalt, the high-quality aggregates used in asphalt concrete are mainly alkaline aggregates or moderately alkaline stones, including basalt, diabase, limestone, etc., but these Resources are limited and non-renewable. The rapid development of asphalt pavement and the extensive use of aggregates have brought great pressure on the mining and supply of aggregates, and have also brought great inco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/12C04B26/26
CPCC04B26/26C04B40/0039C04B22/12C04B22/122C04B14/02
Inventor 袁燕
Owner FUZHOU UNIV
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