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Preparation method of fiber and cold patch asphalt mixture

A technology of cold patching asphalt and mixture, applied in the field of road repairing materials, can solve the problems of short service life, peeling, high cost, etc., achieve excellent low temperature crack resistance, improve fatigue life, and prolong service life

Inactive Publication Date: 2017-02-22
SOUTHEAST UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Looking at the various existing cold-patch asphalt mixtures, most of the preparation processes are relatively complicated and the cost is relatively high
In addition, the repaired highway pavement often peels off after the rain and snow season, exposing stones, so that the service life is too short
And in the high temperature environment in summer, there will be oil flooding, and the performance will be worse

Method used

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  • Preparation method of fiber and cold patch asphalt mixture

Examples

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Embodiment Construction

[0018] In order to illustrate the present invention better, further elaborate below in conjunction with example, but content of the present invention is not only limited to following example. Table 1 is the composition mass ratio of 6 embodiments.

[0019] Table 1 Mass ratio of cold-patch asphalt mixture

[0020]

[0021] The aggregate used in the above 6 examples is basalt, the asphalt is 70# matrix asphalt, and the filler is limestone. Examples 1-3 were graded as LB-16, and Examples 4-6 were graded as LB-13.

[0022] It needs to be explained that in addition to limestone powder, cement or fly ash can also be used as a filler. The above two fillers can also have similar effects, so we will not introduce them in detail here.

[0023] The preparation method of the fiber cold patch asphalt mixture of above-mentioned embodiment 1-6, it comprises the steps:

[0024] (1) carry out batching as shown in table 1;

[0025] (2) Mix the aggregate and filler evenly;

[0026] (3) H...

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Abstract

The invention provides a preparation method of a fiber and cold patch asphalt mixture. The fiber and cold patch asphalt mixture is prepared from the following components in percentage by mass: 0.1 percent to 0.5 percent of fiber, 3 percent to 8 percent of cold patch asphalt, 3 percent to 5 percent of filling and the balance of an aggregate material. The fibers comprise polyester fibers, cellulose fibers and the like. The cold patch asphalt component is prepared from asphalt, a diluting agent and a clay mineral material. The clay mineral material comprises bentonite, kaolin, attapulgite, diatomite and the like. According to the cold patch asphalt mixture prepared by the invention, pavement performance, including Marshall stability, high-temperature stability, low-temperature crack resistance, water stability and the like, is remarkably improved. Technical and economic analysis shows that the prepared fiber and cold patch asphalt mixture has obvious economic benefits and has a very good application prospect.

Description

technical field [0001] The invention relates to a road repair material and a convenient preparation method of a fiber cold-patched asphalt mixture, belonging to the technical field of preparation of road repair materials. Background technique [0002] Asphalt pavement has been widely used in the construction of high-grade highways due to its good performance. However, with the rapid development of the national economy, the road traffic volume has increased rapidly. In addition, the phenomenon of overloading and heavy-duty vehicles is common today, and the road surface is seriously damaged. Therefore, the highway pavement often needs to be repaired in time, and the construction of traditional hot-mix asphalt mixture is very inconvenient, and it is limited by climate and weather, especially in cold winter or rainy season, road construction is difficult, and it cannot be repaired after construction. Immediately open to traffic. [0003] The cold-patch asphalt mixture can be ta...

Claims

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Application Information

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IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2111/343
Inventor 马全红冯小含许雪松刘帅邢雪婷
Owner SOUTHEAST UNIV
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