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Modified asphalt pavement repairing material suitable for high-temperature rainy regions, and preparation method thereof

A modified asphalt and pavement repair technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of insufficient low-temperature crack resistance, high processing equipment requirements, and not widely used oil sands, and achieve excellent waterproof performance. , The effect of reducing curing time and good elasticity

Inactive Publication Date: 2020-01-24
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention requires high-speed shear mixing of the mixture under a high-shear mixer, so it has high requirements for processing equipment, and the highest softening point of the modified asphalt is only 77.4°C, and the ductility at 5°C is lower than 10 cm. It can be seen that its low temperature crack resistance is still relatively insufficient.
[0008] Finally, the application publication number is CN103232714A, which discloses a high softening point SBS modified asphalt. The base asphalt used is obtained by blending oil sands and CNOOC crude oil. The softening point of the modified asphalt prepared from oil sands is relatively high. However, the viscosity at 135°C is too high, as high as 1900 Pa·s. Due to its high viscosity, construction is difficult, and oil sand is not widely used in the field of modified asphalt, and its applicability is not strong.
[0009] Therefore, the traditional single modifier-modified asphalt can no longer meet the requirements of asphalt roads in the high-temperature and rainy environment in the Jiangnan area. It is only possible to reduce the amount of SBS and assist other modifiers that can improve the waterproof performance of modified asphalt for composite modification. sex, which is urgently needed by the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A modified asphalt pavement repair material suitable for high temperature and rainy areas, including the proportion of components by weight: "Ritton brand" 70# base asphalt 77%, 1# modifier 4%, 2# modifier 8%, softener 8%, graft compatibilizer 1.5%, antioxidant 0.6%, initiator 0.5%, reaction temperature 240℃, reaction time 2 h. Among them, 1# modifier is YH-188 type, that is, styrene-butadiene block copolymer, and the block ratio S / B is 30 / 70; 2# modifier is EVA, that is, ethylene-vinyl acetate The copolymer has a VA weight percentage content of 25%; the softener is naphthenic oil; the graft compatibilizer is maleic anhydride; the antiaging agent is ultraviolet absorber UV-531; the initiator is dibenzophthalein peroxide.

[0033] The above-mentioned preparation method of the modified asphalt pavement repair material suitable for high-temperature and rainy areas comprises the following steps. First, each component is weighed according to the above-mentioned formula, and ...

Embodiment 2

[0035] A modified asphalt pavement repair material suitable for high temperature and rainy areas, including the proportion of components by weight: "Ritton brand" 70# base asphalt 84%, 1# modifier 5%, 2# modifier 6%, softener 2%, graft compatibilizer 1.5%, antioxidant 0.6%, initiator 0.5%, reaction temperature 240°C, reaction time 1.5 h. Among them, 1# modifier is YH-188 type, that is, styrene-butadiene block copolymer, and the block ratio S / B is 30 / 70; 2# modifier is EVA, that is, ethylene-vinyl acetate The copolymer has a VA weight percentage content of 25%; the softener is naphthenic oil; the graft compatibilizer is maleic anhydride; the antiaging agent is ultraviolet absorber UV-531; the initiator is dibenzophthalein peroxide.

[0036] The above-mentioned preparation method of the modified asphalt pavement repair material suitable for high-temperature and rainy areas comprises the following steps. First, each component is weighed according to the above-mentioned formula, a...

Embodiment 3

[0038] A modified asphalt pavement repair material suitable for high temperature and rainy areas, including the proportion of components by weight: "Ritton brand" 70# base asphalt 80%, 1# modifier 7%, 2# modifier 8%, softener 2%, graft compatibilizer 1.5%, antioxidant 0.6%, initiator 0.5%, reaction temperature 220℃, reaction time 1 h. Among them, 1# modifier is YH-188 type, that is, styrene-butadiene block copolymer, and the block ratio S / B is 30 / 70; 2# modifier is EVA, that is, ethylene-vinyl acetate The copolymer has a VA weight percentage content of 25%; the softener is naphthenic oil; the graft compatibilizer is maleic anhydride; the antiaging agent is ultraviolet absorber UV-531; the initiator is dibenzophthalein peroxide.

[0039] The above-mentioned preparation method of the modified asphalt pavement repair material suitable for high-temperature and rainy areas comprises the following steps. First, each component is weighed according to the above-mentioned formula, and ...

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Abstract

The invention discloses a modified asphalt pavement repairing material suitable for high-temperature rainy regions, and a preparation method thereof. The modified asphalt pavement repairing material is prepared from 77-89 wt% of matrix asphalt, 4-7 wt% of a 1# modifier, 5-8 wt% of a 2# modifier, 2-8 wt% of a softener, 1-1.5 wt% of a grafting compatilizer, 0.5-0.6 wt% of an anti-aging agent and 0.4-0.5 wt% of an initiator. The high temperature resistance, the waterproof performance, the aging resistance, the permanent deformation resistance, the impact resistance and the environmental stress resistance of modified asphalt are improved, the material curing effect can be enhanced, the curing time is shortened, and the engineering efficiency is improved. The softening point of the modified asphalt can reach 95 DEG C or above, the needle penetration is 2.0-3.0 mm, the ductility at 5 DEG C is 20 cm or above, and the lowest technical requirements of three major performance indexes of the polymer modified asphalt in China are met.

Description

technical field [0001] The invention relates to a modified asphalt pavement repair material suitable for high-temperature and rainy areas and a preparation method thereof, belonging to the technical field of adhesive tapes. Background technique [0002] With the development of the automobile industry and the logistics industry, the number of large and heavy-duty vehicles is increasing day by day. In the face of this situation, the performance indicators of the road pavement of the Ministry of Communications have to be gradually improved. More serious road surface damage phenomena have appeared in the past year, such as: potholes, cracks, subsidence, looseness and cracks, etc., especially in some perennial high-temperature areas and rainy areas, the various damage phenomena of the asphalt roads are more serious, and the service life greatly shortened. A large part of the reason why asphalt roads will be damaged to a large extent in a short period of time is that asphalt road...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/08C08L51/00C08L91/00C08K5/132
CPCC08L95/00C08L2201/08C08L2205/035C08L2205/08C08L23/0853C08L51/006C08L91/00C08K5/132
Inventor 黄紫洋黄云雄张晓宇
Owner FUJIAN NORMAL UNIV
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