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Foam asphalt pavement recycled material capable of reducing cracking as well as preparation method and construction method

A foamed asphalt and asphalt pavement technology is applied in the field of reducing cracking of foamed asphalt pavement, as well as in the fields of its preparation and construction. The effect of cracking rate

Active Publication Date: 2020-08-21
BEIJING ZHIHUATONG TECH CO LTD
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Problems solved by technology

In the treatment of asphalt pavement rutting, load-type cracks and non-load-type cracks and other diseases and pavement overhaul projects, the existing foamed asphalt in-situ cold recycled mixtures still have poor strength and early bonding, and aggregates exist. Problems such as looseness, threshing, and insufficient stability

Method used

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  • Foam asphalt pavement recycled material capable of reducing cracking as well as preparation method and construction method

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Embodiment Construction

[0031] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0034] In the existing technology, the strength ...

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Abstract

The invention provides a foam asphalt pavement recycled material capable of reducing cracking and a preparation method and a construction method, and relates to the technical field of highway and municipal engineering. The material has high strength and low shrinkage cracking rate, so that the overall bearing capacity of the foam asphalt pavement recycled material as a base layer or a lower surface layer is improved, and the service life of the pavement is prolonged. The material comprises the following components in parts by mass: 85-100 parts of an asphalt pavement recycled material, 5-10 parts of gravels, 3-5 parts of fine aggregates, 2-3 parts of foamed asphalt, 4-5 parts of water, 1-2 parts of slag sulphoaluminate and / or ferro-aluminate cement and 0.1-0.5 part of fibers. During preparation, a plant mixing method or an in-situ cold regeneration on-site mixing method can be adopted. The technical scheme provided by the invention is suitable for the paving or refurbishing process ofthe foamed asphalt pavement.

Description

【Technical field】 [0001] The invention relates to the technical field of highways and municipal engineering, in particular to a recycled material for reducing cracking foam asphalt pavement and a preparation and construction method. 【Background technique】 [0002] my country's highway construction is developing rapidly. According to the calculation of asphalt design life of 15-20 years, from now on, about 12% of the asphalt pavement needs to be repaired every year, and it will increase at a rate of 15% every year. If all waste and old materials are recycled, 12 billion yuan in material costs can be saved every year, and the resulting environmental benefits will be even greater. Cold recycling technology can effectively solve the problem of resource waste, and compared with other traditional construction methods, it can save 40%-50% of the total investment. However, at present, this technology is mostly used in the grassroots of low-grade roads, and the utilization rate of w...

Claims

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Application Information

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IPC IPC(8): E01C19/10E01C7/00E01C7/18C04B28/08C04B18/16
CPCC04B18/16C04B28/08C04B28/082E01C7/00E01C7/18E01C19/1004C04B14/02C04B22/002C04B20/0048C04B24/36Y02W30/91
Inventor 邱建波石红星李迎民刘刚武彦龙郭广生蔡轩秦家禄闫伟潘新涛郑韶光董月振杨柏顺邢增楠杨超林红星李涛
Owner BEIJING ZHIHUATONG TECH CO LTD
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