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Preparation process and paving method of normal-temperature asphalt capable of forming high-porosity and high-modulus asphalt

A normal temperature asphalt and preparation technology, applied in ceramic products, other household appliances, climate sustainability, etc., to achieve high strength, high adhesion, flexible and fast construction

Active Publication Date: 2021-03-30
南通福伦利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems in the prior art of using heat-modified asphalt irrigation to solve road diseases such as serious rutting and congestion in special areas such as light-controlled areas and crossroads.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: Non-ionic modified polyurethane thickener is not used

[0043] 1) According to the oil-stone ratio of 4.0% (without water), add the weighed wear-resistant room temperature asphalt composite emulsion without any non-ionic modified polyurethane thickener and OGFC speed-strength mixing aggregate into the cement forced mixer, and Stir for 5 minutes, after the material is evenly stirred, open the material door to discharge;

[0044] 2) Use a tamping machine to directly tamp the mixture discharged from the cement forced mixer. The area of ​​the surface layer is about 2 square meters, and the thickness is about 6 cm. A week later, the core was sampled, and the porosity was measured to be 13.2%, and the Marshall stability was 5.9kN.

Embodiment 2

[0045] Embodiment 2: No FLL fast curing agent is used

[0046] 1) According to the asphalt ratio of 4.0% (without water), the weighed wear-resistant normal temperature asphalt composite emulsion with 0.3%wt of non-ionic modified polyurethane thickener added, OGFC speed-strength mixing set without FLL fast curing agent Add the material into the cement forced mixer and stir together for 5 minutes. After the material is evenly stirred, open the material door to discharge the material;

[0047] 2) Use a tamping machine to directly tamp the mixture discharged from the cement forced mixer. The surface area is about 2 square meters and the thickness is about 6 cm. After a week, the core is sampled. At this time, the porosity is 25.1%, and the Marshall is stable. The degree is 3.3kN.

Embodiment 3

[0048] Embodiment three: Both non-ionic modified polyurethane thickener and FLL fast curing agent are used

[0049] 1) According to the asphalt ratio of 4.0% (without water), the weighed wear-resistant room temperature asphalt composite emulsion and OGFC speed-strength mixed aggregate (adding 18% wt FLL fast curing agent), add to the cement forced mixer, stir together for 5 minutes, after the material is evenly stirred, open the material door to discharge;

[0050] 2) Use a tamping machine to directly tamp the mixture discharged from the cement forced mixer. The area of ​​the surface layer is about 2 square meters, and the thickness is about 6 cm. A week later, the core was sampled. At this time, the porosity was measured to be 26.7%, and the Marshall stability was 8.6kN.

[0051] Obviously, among the three embodiments, the specific embodiment three: not only adopts the non-ionic modified polyurethane thickener, but also uses the normal temperature asphalt with high porosity ...

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Abstract

The invention discloses a preparation process and a paving method of normal-temperature asphalt capable of forming high-porosity and high-modulus asphalt. The preparation process comprises the following steps: preparing a wear-resistant normal-temperature asphalt composite aqueous emulsion with moderate consistency; preparing an OGFC quick-strength mixed aggregate; premixing the wear-resistant normal-temperature asphalt composite aqueous emulsion with moderate consistency, a water-borne epoxy resin curing agent and a proper amount of water for 3 minutes, pouring into a cement forced stirrer, and continuously stirring and dispersing for more than 5 minutes; and adding the weighed OGFC quick-strength mixed aggregate into a cement forced mixer according to the asphalt-aggregate ratio of 3.5-4.0%, and stirring with the materials for 5-10 minutes. By utilizing the tackifying and toughening effects of the water-based composite polymer, high adhesion and high strength shared by the water-based composite polymer and the OGFC mixed aggregate are ensured, meanwhile, the uniform dispersion of the coarse aggregate and the fine aggregate is achieved by adopting the efficient thickening agent, ahigh void ratio can be formed, and the harsh requirements on newly building or repairing anti-rutting pavements of a lamp control area, a crossroad and the like are ensured.

Description

technical field [0001] The invention relates to the technical field of road construction and maintenance, in particular to a preparation process and a paving method thereof capable of forming normal-temperature asphalt with high porosity and high modulus. Background technique [0002] At present, there are anti-rutting asphalt pavements with high void ratio (void ratio 20%-28%) and can be poured into special cement mortar. Road diseases such as serious rutting and congestion in the region. [0003] However, the amount of engineering in these areas is small, and the batches of thermally modified asphalt used are not large. If the furnace is turned on for preparation in the mixing building, the energy consumption will be large, which will not only waste heating energy. Moreover, it is very inconvenient to transport the hot asphalt mixture from the mixing plant and increase the freight. [0004] Moreover, the fine aggregate of the existing modified emulsified asphalt system f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/00E01C19/10E01C19/48C04B111/20
CPCC04B28/065E01C19/1013E01C19/4833C04B2111/0075C04B2111/2038C04B24/36C04B24/281C04B24/282C04B14/00C04B18/22C04B2103/0068C04B38/00C04B38/0074Y02W30/91
Inventor 蔡海军刘志良沈峰吴新峰毛开明郁讳讳顾健健吴瑞琪
Owner 南通福伦利新材料有限公司
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