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Ultra-thin asphalt sand pavement surface layer mixture of 2-4cm

A technology of mixture and tar sand, which is applied in the field of tar sand pavement surface layer mixture formulation, can solve the problems of tar sand properties, service performance, use range and lack of construction experience, etc.

Active Publication Date: 2015-03-11
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the nature, performance, scope of use and construction experience of asphalt sand in my country are relatively lacking.
Moreover, the asphalt sand test is determined by the Harfer test, but the Harfer test has not yet formed a standard record in China.

Method used

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  • Ultra-thin asphalt sand pavement surface layer mixture of 2-4cm
  • Ultra-thin asphalt sand pavement surface layer mixture of 2-4cm
  • Ultra-thin asphalt sand pavement surface layer mixture of 2-4cm

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The advantages of the present invention are illustrated below for the mix ratio test and verification of 3 cm asphalt single-layer pavement construction in Cote de Wa country for adopting different proportions. The mass percentage ratio of each component in the sand mixture used is: 0~5mm coarse sand: 55%, 0.08mm particle size passing rate 12.5%; 0~3mm yellow sand: 25%, 0.08mm particle size passing rate 2.3% ; 0~3mm silt: 10%, 0.08mm particle size pass rate 13.2%; 0~5mm machine-made sand: 10%, 0.08mm particle size pass rate 10%.

[0034] Table 1 lists the detection data of asphalt, Table 2 lists the screening results of the sand mixture used in the comparative test, and Table 3 lists the comparison of the test results between the Haffey test and the Marshall test.

[0035] Table 1 Test data of asphalt

[0036] Test items requirements Penetration at 25°C (0.1mm) 60～70 25°C ductility (cm) ＞100 Softening Point 48～56 25 ℃ specific gravity...

Embodiment 2～8

[0056] Table 4 lists the embodiment proportioning of the 2 ~ 4cm ultra-thin asphalt sand road surface layer mixture of the present invention.

[0057] Table 4 Example ratio (%) of the 2-4cm ultra-thin asphalt sand pavement surface layer mixture of the present invention

[0058]

[0059] According to the formula in Table 4, paving 2~4cm ultra-thin asphalt sand pavement can achieve good technical and economic effects.

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Abstract

The invention discloses an ultra-thin asphalt pavement surface layer mixture of 2-4cm. The ultra-thin asphalt pavement surface layer mixture is formed by mixing and blending asphalt and a sand mixture, and is characterized in that the oil-stone ratio is 6.6%-7.0%, the sand mixture is formed by combining coarse sand of 0-5mm, yellow sand of 0-3mm, powder sand of 0-3mm and machine-made sand of 0-5mm, and the sand mixture specifically comprises the following components in percentage by weight: 53%-58% of the coarse sand of 0-5mm with the 0.08mm particle size passing rate of 11%-14%; 23%-27% of the yellow sand of 0-3mm with the 0.08mm particle size passing rate of 2.0%-2.6%; 9%-11% of the powder sand of 0-3mm with the 0.08mm particle size passing rate of 11%-15%; and 9%-11% of the machine-made sand of 0-5mm with the 0.08mm particle size passing rate of 9%-11%. The ultra-thin asphalt pavement surface layer mixture disclosed by the invention has the advantages of simple components, low using cost and convenience in construction, can save manufacturing cost, reduce cost and save manufacturing cost by about 20%-25% by selecting an asphalt sand surface layer under the same conditions in comparison with an asphalt concrete surface layer, is particularly suitable for applications in regions with shortage of stone, and can be widely applied in pavement construction and pavement transformation of roads in residential areas, sidewalks, non-motorized vehicle lanes, tennis courts, parking lots, various squares and the like.

Description

technical field [0001] The invention relates to a pavement surface material, in particular to a formula of asphalt sand pavement surface layer mixture, which can be widely used in road construction and pavement reconstruction of urban pedestrian roads, residential quarter roads, non-motor vehicle lanes, various squares, etc. , It can also be used in the construction of highway and other high-grade highway pavement surfaces. Background technique [0002] The asphalt-sand mixture is made by fully mixing sand materials of various particle sizes and a certain proportion of asphalt in the state. Asphalt sand has the advantages of fine surface, beautiful appearance, good water resistance, comfortable driving and low noise. The asphalt sand pavement paved on a good base has good practicability; it can be used as the cover of the old road surface to improve the original road surface. Road conditions, prolonging the service life of the original road surface; it can also be paved on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
Inventor 金玲玲谢兰敏汪言生
Owner CHINA MCC17 GRP