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A kind of asphalt pavement joint filling glue and preparation method thereof

A technology of asphalt pavement and joint glue, which is applied to chemical instruments and methods, other chemical processes, building components, etc., can solve the problems of long preparation process and unfavorable industrial production, achieve high softening point, and be easy to operate , the effect of reasonable price

Active Publication Date: 2015-12-16
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method disclosed in this patent application has a long process flow, which is not conducive to industrial production

Method used

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  • A kind of asphalt pavement joint filling glue and preparation method thereof
  • A kind of asphalt pavement joint filling glue and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, prepare joint glue

[0028] Using the AH-90 bitumen produced by China Shipping Asphalt Co., Ltd. as raw material (see Table 1 for properties), and using the third-line extraction oil produced by China Shipping Asphalt Co., Ltd. as a compatibilizer, research on heavy oil processing engineering in CNOOC (Qingdao) Center Co., Ltd. (hereinafter referred to as "Qingdao Research Center") small test device for testing.

[0029] Weigh 600g of asphalt, 200g of compatibilizer, and 200g of modifier (a mixture of styrene-butadiene-styrene block copolymer, SBR, and rubber powder, the ratio of mass and number of parts is 2:1:1), and the asphalt Heat to 140°C, then add modifier and compatibilizer heated to 40°C to the asphalt for stirring and swelling, wherein the temperature of stirring and swelling is 190°C, and the time is 30min; after swelling, the sample is sheared, sheared The temperature is 180°C, and the shearing time is 45min; after shearing, slowly add 8g of s...

Embodiment 2

[0031] Embodiment 2, preparation of caulking glue

[0032] The AH-70 bitumen produced by China Shipping Asphalt Co., Ltd. was used as raw material (see Table 1 for properties), and the third-line extraction oil produced by China Shipping Asphalt Co., Ltd. was used as a compatibilizer. The test was carried out in the small test device of Qingdao Research Center.

[0033] Weigh 550g of asphalt, 230g of compatibilizer, and 220g of modifier (a mixture of styrene-butadiene-styrene block copolymer, SBR, and rubber powder, with a mass ratio of 2:1.2:0.8), and heat the asphalt to 150°C, then add the modifier and compatibilizer heated to 60°C into the asphalt for stirring and swelling, wherein the temperature of stirring and swelling is 200°C, and the time is 60min; after swelling, the sample is sheared, and the shearing temperature is 200°C, the shearing time is 120min; after shearing, slowly add 8g of stabilizer (a mixture of sulfur, organic vulcanizing agent and rubber powder, the m...

Embodiment 3

[0035] Embodiment 3, preparation of caulking glue

[0036] The AH-90 asphalt produced by China Shipping Asphalt Co., Ltd. was used as raw material (see Table 1 for properties), and the third-line extraction oil produced by China Shipping Asphalt Co., Ltd. was used as a compatibilizer. The test was carried out in the pilot plant of Qingdao Research Center.

[0037] Weigh 30kg of asphalt, 10kg of compatibilizer, and 10kg of modifier (a mixture of styrene-butadiene-styrene block copolymer, SBR, and rubber powder, with a mass ratio of 1:1:1), and heat the asphalt to 150°C, then add the modifier and the compatibilizer heated to 50°C into the asphalt for stirring and swelling, the temperature of stirring and swelling is 185°C, and the time is 45min; after swelling, the sample is sheared, and the shearing temperature is 180°C ℃, the shearing time is 90min; after shearing, slowly add 400g of stabilizer (a mixture of sulfur, organic vulcanizing agent and rubber powder, the mass ratio i...

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Abstract

The invention discloses an asphalt pavement crack filling adhesive and a preparation method thereof. The crack filling adhesive is composed of a compatilizer, a modifier and a stabilizer, and a mass part ratio of the compatilizer to the modifier to the stabilizer to matrix asphalt is (1-3):(1-3):(0.05-0.3):(4-6). The preparation method of the crack filling adhesive comprises the following steps: 1, heating the matrix asphalt to 140-150DEG C, adding the compatilizer and the modifier to the matrix asphalt to obtain a mixture, heating the mixture, and stirring; and 2, shearing the mixture, adding the stabilizer, and stirring to obtain the crack filling adhesive. The crack filling adhesive prepared in the invention has the advantages of excellent high and low temperature performances, excellent deformation recovery capability, high softening point, high low-temperature elongation and proper elastic recovery rate.

Description

technical field [0001] The invention relates to an asphalt pavement joint filling glue and a preparation method thereof, belonging to the field of petrochemical industry. Background technique [0002] Petroleum asphalt is the residue of petroleum after vacuum distillation. Petroleum asphalt has high temperature sensitivity. It tends to become soft at high temperature and brittle at low temperature. Therefore, asphalt pavement is prone to cracking and permanent pavement in winter in northern regions. crack. When the rainy season comes or the ice and snow melt, water will seep into the base layer of the pavement through cracks, resulting in damage to the base layer of the pavement and greatly impairing the service life of the asphalt pavement. [0003] When ordinary asphalt or modified asphalt is used to repair asphalt pavement cracks, the softening point of asphalt is low, and oil flooding and being carried away by vehicles are easy to occur at high temperatures. At low temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L91/00C08K3/06C09K3/10
Inventor 王涛齐邦峰陈松李福起李娜李虎
Owner CHINA NAT OFFSHORE OIL CORP
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