The airport pavement structure and pavement method of adding asphalt layer to the old cement airport runway

An airport runway, old cement technology, applied to the coagulation pavement, roads, roads and other directions paved on site, can solve the problems of low temperature brittle fracture, high strength, poor coordination, etc., to improve friction and adhesion, reduce effect, good water stability

Active Publication Date: 2022-05-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing epoxy asphalt concrete material has high strength, is prone to low-temperature brittle fracture, and has poor coordination with other pavement layers, which cannot well meet the requirements for overall performance during long-term use.

Method used

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  • The airport pavement structure and pavement method of adding asphalt layer to the old cement airport runway
  • The airport pavement structure and pavement method of adding asphalt layer to the old cement airport runway
  • The airport pavement structure and pavement method of adding asphalt layer to the old cement airport runway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, the airport pavement structure of the old cement airport runway of the present embodiment with an asphalt layer, including a lower viscoelastic bonding layer 2, a mortar layer 3, and a gravel layer arranged on the old cement concrete layer 1 from bottom to top. 4. Modified asphalt concrete overlay layer 5, upper interface bonding layer 6 and epoxy asphalt concrete overlay layer 7; crushed stone layer 4 is embedded between mortar layer 3 and modified asphalt concrete overlay layer 5, modified The permanent asphalt concrete overlay layer 5 and the epoxy asphalt concrete overlay layer 7 are bonded through the upper interface bonding layer 6 .

[0042] The lower viscoelastic bonding layer 2 uses pit interface repairing agent, and the bonding strength of the pit interface repairing agent used in this embodiment is 1.2 MPa.

[0043] The mortar layer 3 adopts cement-emulsified asphalt mortar. In this embodiment, the ratio of raw materials used in th...

Embodiment 2

[0068] The airport pavement structure of the used old cement airport runway overlay asphalt layer in embodiment 2, except that the aggregate gradation of the early strength type epoxy asphalt concrete EA-13 of the epoxy asphalt concrete overlay layer 7 is different from that of embodiment 1 Except, the preparation of all the other materials and the paving method are all the same as in Example 1.

[0069] In this embodiment, the aggregate gradation of the early-strength epoxy asphalt concrete EA-13 of the epoxy asphalt concrete overlay layer 7 is shown in Table 3.

Embodiment 3

[0071] The used airport pavement structure of the old cement airport runway overlay asphalt layer used in embodiment 3, except that the aggregate gradation of the early strength type epoxy asphalt concrete EA-13 of the epoxy asphalt concrete overlay layer 7 is different from that of embodiment 1 Except, the preparation of all the other materials and the paving method are all the same as in Example 1.

[0072] In this embodiment, the aggregate gradation of the early-strength epoxy asphalt concrete EA-13 of the epoxy asphalt concrete overlay layer 7 is shown in Table 3.

[0073] Table 3 Aggregate gradation of early strength epoxy asphalt concrete EA-13 in the example

[0074]

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Abstract

The invention discloses an airport pavement structure and a pavement method for adding an asphalt layer to an old cement airport runway, including a lower viscoelastic bonding layer, a mortar layer, a gravel layer, Modified asphalt concrete overlay, upper interface bonding layer and epoxy asphalt concrete overlay; between the mortar layer and modified asphalt concrete overlay, there is a gravel layer, modified asphalt concrete overlay and epoxy The asphalt concrete overlay is bonded by the upper interface bond coat. The pavement structure of the present invention fully considers the integrity of the structure and the bonding performance between layers, evenly transmits the stress generated by the aircraft load, avoids stress concentration, has excellent overall performance, and can adapt to the heavy traffic load requirements of large aircraft , has good anti-rutting ability, and has good low-temperature crack resistance and water stability; at the same time, the pavement method of this pavement structure is easy to operate and can be mechanized.

Description

technical field [0001] The invention belongs to the technical field of airport pavement engineering, in particular to an airport pavement structure and a paving method for an old cement airport runway with an asphalt layer. Background technique [0002] Airport pavement is the most important infrastructure in the airport flight area, and it undertakes important tasks such as aircraft takeoff and landing, taxiing and parking. At present, most of the airport runways in my country use cement concrete pavement. However, under the repeated action of large aircraft, heavy traffic load factors and environmental factors, the pavement structure will gradually be damaged and various diseases will appear, such as cracks, board corner breaks, road The surface is loose, muddy, etc., seriously affecting flight safety, so it needs to be renovated or expanded. However, the use of cement concrete for renovation or expansion requires a long suspension of navigation, causing inconvenience. As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/32E01C23/09E01C19/48
CPCE01C7/32E01C7/325E01C23/09E01C23/0973E01C19/48E01C19/488
Inventor 钱振东杨文卉薛永超
Owner SOUTHEAST UNIV
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