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: 2013-08-28
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: The coarse aggregate is diabase, the fine aggregate is limestone, and the maximum nominal particle size is 13.2mm.

[0024] Filler: limestone powder.

[0025] The ore 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] Diluted asphalt: Diluted asphalt accounts for 5.5% of the mass of the mixture,

[0029] In the diluted asphalt, the base asphalt is Korean SK 70# heavy traffic asphalt, and the dosage is 64.5% 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 copolymer (SBS), p...

Embodiment 2

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

[0032] Filler: limestone powder.

[0033] The ore 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 fiber, accounting for 0.4% of the mass of the mixture.

[0036] Diluted asphalt: Diluted asphalt accounts for 7.5% of the mass of the mixture.

[0037] In the diluted asphalt, the base asphalt is Korean SK 70# heavy traffic asphalt, and the dosage is 64.4% of the diluted asphalt mass; the modifier is RST modifier, which is a high-viscosity asphalt modifier, and the dosage of RST modifier is 9.2% of the mass of diluted asphalt; the amount of recycled polypropylene wax added is 3....

Embodiment 3

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

[0040] Filler: limestone powder.

[0041] The ore 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 fiber, accounting for 0.25% of the mass of the mixture.

[0044] Diluted asphalt: Diluted asphalt accounts for 6.5% of the mass of the mixture.

[0045] The base asphalt is Korean SK 70# heavy traffic asphalt, and the dosage is 63.9% of the diluted asphalt; the modifier is RST modifier, a patented product produced by Shanghai Pudong Road and Bridge Construction Co., Ltd., and the dosage is 63.9% of the diluted asphalt. 10.9%; the added amount of recycled polyethylene wax is 3.1% of the diluted asphalt mass; the diluent used is No. 0 diese...

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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, and in particular relates to an open-graded storage type asphalt mixture used for repairing drainage asphalt pavement. Background technique [0002] Drainage asphalt pavement is a typical skeletal pore structure. A large number of interconnected spaces form a well-developed drainage network inside the road. Rainwater is discharged from the interior of the road body along the cross slope of the network through the network. With the promotion of Expo drainage asphalt pavement application, its rainy road surface has no water, no water mist, anti-glare, good skid resistance, and outstanding safety performance; noise reduction, mitigation of heat island effect, material saving, low-carbon environmental protection and other advantages are gradually recognized by people. Drainage asphalt As a high-grade pavement, pavement is expected to become the main pavement struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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