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Open-gradation storage type asphalt mixture for patching of draining asphalt pavement

A technology of asphalt mixture and drainage asphalt, which is applied in the field of building materials, and can solve the problem that the problem of road surface pothole repair has not been effectively solved.

Active Publication Date: 2012-07-04
SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, drainage asphalt pavement has been introduced into China as a new type of pavement, but the problem of repairing potholes in the pavement has not been effectively solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Aggregate: Coarse aggregate is diabase, fine aggregate is limestone, the maximum nominal particle size is 13.2mm.

[0024] Filler: limestone ore powder.

[0025] Mineral grading is:

[0026] Sieve hole(mm)

16

13.2

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

Passing rate(%)

100

99.1

54.5

18.1

12.0

9.6

7.7

6.5

5.6

4.6

[0027] Fiber stabilizer: basalt fiber, accounting for 0.6% of the mass of the mixture.

[0028] Thinning bitumen: Thinning bitumen accounts for 5.5% of the mass of the mixture,

[0029] In the diluted asphalt, the base asphalt is Korean SK 70# heavy-cross asphalt, and the mixing amount is 64.5% of the quality of the diluted asphalt; the modifier is the patented product RST modifier produced by Shanghai Pudong Road and Bridge Construction Co., Ltd., RST modifier It is composed of styrene-butadiene-styrene triblock copo...

Embodiment 2

[0031] Aggregate: Coarse aggregate is diabase, fine aggregate is limestone, the maximum nominal particle size is 13.2mm.

[0032] Filler: limestone ore powder.

[0033] Mineral grading is:

[0034] Sieve hole(mm)

16

13.2

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

Passing rate(%)

100

99.1

54.8

18.2

12.0

9.6

7.6

6.4

5.5

4.5

[0035] Fiber stabilizer: lignin fibers, accounting for 0.4% of the mass of the mixture.

[0036] Thinning bitumen: Thinning bitumen accounts for 7.5% of the mass of the mixture.

[0037] In the diluted asphalt, the base asphalt adopts South Korea SK 70# heavy-cross asphalt, and the dosage is 64.4% of the quality of the diluted asphalt; the modifier adopts RST modifier, that is, high-viscosity asphalt modifier, and the dosage of RST modifier is: 9.2% of the mass of the diluted asphalt; the added amount of recycled poly...

Embodiment 3

[0039] Aggregate: diabase, the maximum nominal particle size is 13.2mm.

[0040] Filler: limestone ore powder.

[0041] Mineral grading is:

[0042] Sieve hole(mm)

16

13.2

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

Passing rate(%)

100

99.1

53.8

17.5

11.5

9.1

7.2

6.0

5.1

4.1

[0043] Fiber stabilizer: lignin fibers, accounting for 0.25% of the mass of the mixture.

[0044] Thinning bitumen: Thinning bitumen accounts for 6.5% of the mass of the mixture.

[0045] The base asphalt is SK 70# heavy duty asphalt from South Korea, and the mixing amount is 63.9% of the quality of the diluted asphalt; the modifier is the patented product RST modifier produced by Shanghai Pudong Road and Bridge Construction Co., Ltd. 10.9%; the added amount of recycled polyethylene wax is 3.1% of the diluted asphalt mass; the diluent used is No. 0 diesel oil, and t...

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Abstract

The invention belongs to the technical field of building materials in road engineering and particularly relates to an open-gradation storage type asphalt mixture for patching of a draining asphalt pavement. The mixture comprises aggregate, a filler, a fiber stabilizer and diluted asphalt, and the largest nominal grain size of the mixture is 13.2mm. The aggregate comprises coarse aggregate and fine aggregate, the coarse aggregate is made of basalt or diabase, the fine aggregate is made of limestone, and the largest nominal grain size of the aggregate is 13.2mm. The filler is made of limestone ore powder. The fiber stabilizer is made of a lignin fiber or a basalt mineral fiber or a mixed fiber of the lignin fiber and the basalt mineral fiber, and the dosage of the fiber stabilizer is 0.1%-0.6% of mass of the mixture. The diluted asphalt is diluted polymer modified asphalt, and a modifier in the diluted asphalt is a patented product RST modifier produced by Shanghai Pudong Road and Bridge Construction Co., Ltd. The asphalt mixture has the advantages of being long in storage time, convenient and quick to construct and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials used in road engineering, in particular to an open-graded storage-type asphalt mixture used for the repair of drainage asphalt pavement. Background technique [0002] Drainage asphalt pavement is a typical skeleton pore structure. A large number of connected voids form a developed drainage network inside the road. Rainwater is discharged from the inside of the road body along the cross slope of the road through the network. With the popularization of the Expo drainage asphalt pavement Application, its rainy road surface has no water accumulation, no water mist, anti-glare, good skid resistance, outstanding safety performance; noise reduction, alleviation of heat island effect, material saving, low carbon environmental protection and other advantages are gradually recognized by people. As a high-grade pavement, pavement will become the main pavement structure type of urban roads. [000...

Claims

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Application Information

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IPC IPC(8): C04B26/26
Inventor 赫振华张毅夏庆宇刘钢邓国民李交闫国杰徐韵淳
Owner SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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