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Cold patch asphalt mixture prepared from clay minerals and preparation method of cold patch asphalt mixture

A technology for cold patching asphalt and clay minerals, which is applied in the field of preparing cold patching asphalt mixtures, can solve the problems of inoperable construction, complex preparation process, short service life, etc., and achieves the effects of reducing road maintenance costs, simple procedures and low prices

Inactive Publication Date: 2016-07-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Looking at the various existing cold-patch asphalt materials, most of them have high cost, complicated preparation process, and insufficient strength. They are difficult to compact under low temperature and normal temperature conditions, and cannot be used for normal construction.
The repaired pits cannot withstand the test of rainwater, and the service life is too short, which can only last for 2 to 3 months or even shorter

Method used

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  • Cold patch asphalt mixture prepared from clay minerals and preparation method of cold patch asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

example 1-2

[0037] The preparation method of example 1-2 cold patch asphalt mixture is:

[0038] 1) prepare raw materials by the mass ratio shown in Table 1;

[0039] 2) Mix the aggregate and filler evenly;

[0040] 3) Heat the asphalt to 125°C, first add clay mineral materials, stir to make it completely dissolve in the asphalt, add diluent when the temperature drops to 110°C, and stir thoroughly to make cold patch asphalt;

[0041] 4) Mix the cold-patch asphalt with a temperature of 80°C with certain graded aggregates and fillers, and mix them with a mixer to make a cold-patch asphalt mixture.

example 3-5

[0042] The preparation method of example 3-5 cold patch asphalt mixture is:

[0043] 1) prepare raw materials by the mass ratio shown in Table 1;

[0044] 2) Mix the aggregate and filler evenly;

[0045] 3) Heat the asphalt to 140°C, first add clay mineral material, stir to make it completely dissolve in the asphalt, add diluent when the temperature drops to 90°C, stir fully, and make cold patch asphalt;

[0046] 4) Mix the cold-patch asphalt at a temperature of 70°C with certain graded aggregates and fillers, and mix them with a mixer to make a cold-patch asphalt mixture.

[0047] The performance of the cold patch asphalt mixture prepared by example 1-5 is as follows:

[0048] (1) Low-temperature workability: Keep the temperature in the refrigerator at -10°C for 24 hours, take it out and place it at room temperature for two hours. After the temperature of the mixture reaches room temperature, it is easier to mix with a spade, and the mixture does not agglomerate. Good work...

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Abstract

The invention provides a cold patch asphalt mixture prepared from clay minerals and a preparation method of the cold patch asphalt mixture.According to the cold patch asphalt mixture prepared from the clay minerals, the clay minerals are selected as a modifier of cold patch asphalt, and the cold patch asphalt is prepared from aggregate, filler, diluent and the clay minerals; the mixing quantity of the clay minerals in the cold patch asphalt is 3%-9% the mass of the asphalt, and the clay minerals include attapulgite, bentonite, kaolin, kieselguhr and the like.The prepared cold patch asphalt mixture is simple in process and low in cost.Laboratory experiments and practical pavement construction show that the cold patch asphalt mixture has good pavement performance such as forming strength, water stability and high temperature stability.

Description

technical field [0001] The present invention is a simple method for preparing cold-patch asphalt mixture, aiming at inventing an all-weather pavement pothole repair material. The mixture is not affected by low temperature, rain, snow and other weather, and once a road surface disease is found, it can be repaired at any time , so as to avoid the occurrence of large-scale damaged pavement and prolong the service life of asphalt pavement. Background technique [0002] Traditional hot-mix asphalt mixtures cannot repair pavement potholes in cold seasons. During construction, pavement maintenance agencies not only need to transport materials to the damaged pavement, but also need to transport high-temperature mixers, which is time-consuming and labor-intensive, and requires time to block traffic. As little as a week, as long as half a month, seriously affecting the smoothness of transportation. During the construction of hot mix asphalt mixture, a large amount of CO, CO 2 , SO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B14/14C04B14/28C04B24/00C04B24/08C04B14/08C04B14/102C04B14/106
Inventor 马全红邢雪婷许雪松冯小含
Owner SOUTHEAST UNIV
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