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Pavement patching material and preparation method thereof

A technology for pavement repair and waste rubber powder, which is applied in the field of pavement repair materials and their preparation, can solve problems such as complex components, and achieve the effects of excellent performance, good elasticity and good adhesion

Active Publication Date: 2012-11-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The components of the composition are relatively complex, and the amount of modifier needs to be adjusted according to the ambient temperature during construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Heat 85 parts of asphalt with a penetration of 120 to 140°C, add 5 parts of high polymer SBS with a molecular weight of 210,000, and stir for 20 minutes; heat 15 parts of extracted oil to 120°C, add 25 parts of The waste rubber powder prepared by normal temperature method was stirred for 20 minutes. Mix the above mixture and stir for 10 minutes, then add 0.8 parts of cross-linking aid (obtained by stirring sulfur powder and DCP at a ratio of 2:1 at 165°C for 10 minutes), the stirring speed is 4300r / min, and the stirring time is 60min , the preparation temperature is 190-200°C, the mixture is uniformly dispersed, and the properties are shown in Table 1.

Embodiment 2

[0022] Heat 85 parts of asphalt with a penetration of 120 to 140°C, add 5 parts of high polymer SBS with a molecular weight of 210,000, and stir for 20 minutes; heat 20 parts of extracted oil to 120°C, add 20 parts of solvent with a particle size of less than 0.45mm The waste rubber powder prepared by the method was stirred for 20 minutes. Mix the above mixture and stir for 10 minutes, then add 1.2 parts of crosslinking aid (obtained by stirring sulfur powder, zinc oxide and POE at a ratio of 0.5:0.5:1 at 170°C for 10 minutes), the stirring speed is 4300r / min, the stirring time is 60min, the preparation temperature is 190-200°C, the mixture is evenly dispersed, and the properties are shown in Table 1.

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PUM

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Abstract

The invention provides a pavement patching material. The patching material comprises the following components in parts by weight: 70-90 parts of asphalt, 10-30 parts of extract oil, 15-30 parts of waste rubber powder, 2-8 parts of high polymer and 0.05-4 parts of crosslinking aid. The preparation method comprises the following steps of: heating the asphalt to 100-180 DEG C, adding the high polymer and uniformly stirring; heating the extract oil to 100-160 DEG C, adding the waste rubber powder and beginning to stir uniformly; blending the two stirred mixtures and uniformly stirring; and addingthe crosslinking aid and uniformly stirring. The patching material has the characteristics of simple process and higher high and low temperature resistance and can be applied to the patching of cracks of pavements or bridge floors.

Description

technical field [0001] The invention relates to a pavement repair material and a preparation method thereof. The pavement repair material can be used for repairing cracks on road surfaces or bridge decks. Background technique [0002] With the rapid development of my country's transportation industry, higher and higher requirements are put forward for the technical performance of road asphalt materials. Due to improper construction or the asphalt itself, reflective cracks, stress cracks or temperature shrinkage cracks will occur after being put into use for a certain period of time. Especially in areas with large climate changes, due to the low temperature in winter, the road surface will shrink at low temperature. Cracks are more likely. Due to the occurrence of pavement cracks, rainwater can easily penetrate into the middle surface layer or the lower layer through the cracks, and in severe cases, it will also penetrate into the bottom layer or even the road base layer, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/22
CPCY02W30/91
Inventor 范思远徐青柏陈杰
Owner CHINA PETROLEUM & CHEM CORP
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