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Construction method of cement-emulsified asphalt mortar injecting type semi-flexible pavement

A technology of cement-emulsified asphalt and semi-flexible pavement, which is applied to cohesive pavement paved on site, roads, roads, etc. It can solve the problems of complex supporting machinery and equipment, less application, complex construction technology, etc., and achieve simplification of construction technology , Wide range of uses, high compressive strength and high shear strength

Active Publication Date: 2016-11-23
王海有
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] From a global perspective, although the semi-flexible pavement with cement-asphalt composite material as the cementing material has excellent performance, compared with the flexible pavement with asphalt or modified asphalt as the cementing material, the application amount is very small. The construction process is complicated, and the supporting machinery and equipment are complex

Method used

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  • Construction method of cement-emulsified asphalt mortar injecting type semi-flexible pavement
  • Construction method of cement-emulsified asphalt mortar injecting type semi-flexible pavement
  • Construction method of cement-emulsified asphalt mortar injecting type semi-flexible pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] In this embodiment, AC-20 type asphalt concrete graded gravel is selected to make a semi-flexible pavement with a thickness of 6 cm.

[0117] (1) Construction preparation

[0118] 1) Closed to traffic. Close traffic and control passing vehicles.

[0119] 2) Inspection of the underlying layer. Check and accept the lower bearing layer according to the specifications, and clean it.

[0120] 3) Measure the setting-out. Measure and set-out according to design requirements.

[0121] 4) Mix ratio design.

[0122] The design takes 100kg aggregate as an example. In 100kg of aggregates, 60kg of stones >4.75mm (10mm-20mm gravel: 4.75mm-9.5m gravel = 40:20), 10kg of 2.36mm-4.75mm stones, and ≤2.36mm stones (rice stone: Stone chips: mineral powder = 10:10:10) 30kg meets the specification requirements. If 10kg of 4.75mm-9.5mm stones are used instead of 2.36mm-4.75mm stones, in 100kg of aggregates, there are 70kg of coarse aggregates and 30kg of fine aggregates. Then, the mix...

Embodiment 2

[0143] In this embodiment, the SMA-16 asphalt mastic gravel gradation is selected to make a semi-flexible pavement with a thickness of 4 cm.

[0144] In this embodiment, except that the design of step 4) in the construction preparation stage (1) is different from that of embodiment 1, the rest of the steps are the same. Step 4) Specific content of the difference:

[0145] 4) Mix ratio design.

[0146] The design takes 100kg aggregate as an example. In 100kg of aggregates, 75kg of stones >4.75mm (10mm-16mm gravel: 4.75mm-9.5mm gravel = 45:30), 5kg of stones of 2.36mm-4.75mm, and materials of ≤2.36mm (rice stone: Stone chips: mineral powder = 2:8:10) 20kg meets the specification requirements. If 5kg of 1.18mm-2.36mm stones are used instead of 2.36mm-4.75mm stones, in 100kg of aggregates, there are 75kg of coarse aggregates and 25kg of fine aggregates. Then, the mixing ratio of fine aggregate becomes: rice stone: stone chips: mineral powder = 7:8:10.

[0147] The aggregate r...

Embodiment 3

[0154] In this embodiment, SMA-20 type asphalt mastic gravel gradation is selected to make a semi-flexible pavement with a thickness of 10 cm.

[0155] In this embodiment, except that the design of step 4) in the construction preparation stage (1) is different from that of embodiment 1, the rest of the steps are the same. Step 4) Specific content of the differences:

[0156] 4) Mix ratio design.

[0157] The design takes 100kg aggregate as an example. In 100kg of aggregates, 75kg of stones >4.75mm (10mm-20mm gravel: 4.75mm-9.5mm gravel = 50:25), 10kg of 2.36mm-4.75mm stones, ≤2.36mm materials (rice stone: Stone chips: mineral powder = 5:5:5) 15kg meets the specification requirements. If 10kg of 1.18mm-2.36mm stones are used instead of 2.36mm-4.75mm stones, in 100kg of aggregates, there are 75kg of coarse aggregates and 25kg of fine aggregates. Then, the mixing ratio of coarse aggregate is still: 10mm-20mm crushed stone: 4.75mm-9.5mm crushed stone = 50:25, and the mixing ra...

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Abstract

The invention relates to the technical field of road construction and maintenance, in particular to a construction method of a cement-emulsified asphalt mortar injecting type semi-flexible pavement. The construction method of the semi-flexible pavement comprises the steps that a lower bearing layer is paved with coarse aggregate macadam, well-blended cement-emulsified asphalt mortar is injected into gaps of the coarse aggregate macadam after leveling and pressure stabilizing are conducted, and the semi-flexible pavement is formed through the steps of maintaining, rolling forming and the like. According to the construction method of the cement-emulsified asphalt mortar injecting type semi-flexible pavement, the construction technology is simplified, miniaturization, simplification and minimization of matched construction machinery equipment are achieved, materials used in the method are common, the construction technology is simple and easy to master, application and popularization are convenient, construction can be conducted at room temperature, and wide application is achieved.

Description

Technical field [0001] The invention involves the field of road construction and maintenance technology, especially a construction method of cement emulsified asphalt mortar. Background technique [0002] According to the mechanical characteristics of a single -layer pavement, it is usually divided into three types: flexible roads, rigid pavement and semi -flexible pavement.Rigid roads have their own unfavorable characteristics, especially driving discomfort and difficulty in maintenance, which restricts its application on high -level roads.Most of the highways and urban roads that have been built in my country are asphalt pavement, which belongs to flexible roads.Due to the special properties of the viscosity plasticity of asphalt binding materials, the strength and flow of asphalt pavement are affected by temperature; at high temperature, asphalt pavement mixture will weaken the cohesion between the particles of the material due to the decrease in viscosity, showing plasticityI...

Claims

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Application Information

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IPC IPC(8): E01C7/24C04B28/00C04B26/26
Inventor 王海有
Owner 王海有
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