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Method for constructing upper surface layer by using high-content rubber powder asphalt concrete

A technology of asphalt concrete and construction method, which can be applied to cohesive pavement paved on site, roads, buildings, etc., which can solve the problem of low rubber powder content and achieve the effect of improving durability

Pending Publication Date: 2022-05-17
HEBEI CONSTR GROUP ZHUOCHENG ROAD & BRIDGE ENG
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current rubber powder content is relatively low, generally 9%-11%

Method used

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  • Method for constructing upper surface layer by using high-content rubber powder asphalt concrete
  • Method for constructing upper surface layer by using high-content rubber powder asphalt concrete
  • Method for constructing upper surface layer by using high-content rubber powder asphalt concrete

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Embodiment Construction

[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in...

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Abstract

The invention discloses a method for constructing an upper surface layer by using high-content rubber powder asphalt concrete, the upper surface layer comprises a lower bearing layer and an upper sealing layer, and the method comprises the following steps: laying the lower bearing layer, and carrying out leveling treatment; preparing rubber modified asphalt for laying an upper sealing layer by using an intermittent mixer; asphalt upper sealing layer construction is carried out on the upper surface of the leveled lower bearing layer through rubber modified asphalt, and the construction process of the upper sealing layer comprises the following steps that an upper sealing layer is primarily pressed, specifically, a double-steel-wheel road roller is adopted, primary pressing is carried out in a following type rolling mode, and the temperature is not lower than 165 DEG C; the upper sealing layer is re-pressed, specifically, re-pressing is conducted after initial pressing, strong vibration rolling is conducted three times through a double-steel-wheel road roller, then rolling is conducted three times through a rubber-wheel road roller, and the compaction temperature of strong vibration rolling is not lower than 150 DEG C; performing final pressing on an upper sealing layer, namely performing final pressing by rolling twice in a static rolling manner at the temperature of not lower than 120 DEG C; traffic is open; key technical indexes and key technical control are summarized, and the method has popularization significance.

Description

technical field [0001] The invention relates to the technical field of pavement engineering, in particular to a construction method for an upper layer using high-volume rubber powder asphalt concrete. Background technique [0002] ARHM rubber-modified asphalt concrete has been formally applied and researched in pavement engineering in my country for more than 20 years. Among them, in the field of expressways, it has been applied in Beijing-Qin Expressway and Jinshi Expressway. The age of the pavement. However, the amount of rubber powder is relatively low at present, generally 9%-11%. [0003] The promotion and application of high-volume (30%) rubber powder asphalt concrete has the following problems: (1) According to the characteristics of low rubber powder cost and extremely high improvement in the durability of asphalt concrete, how to carry out and related ratio design? (2) Analyze the impact trend of asphalt ratio on various technical indicators and performance of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C7/35E01C7/18E01C7/26
CPCE01C7/32E01C7/35E01C7/18E01C7/265Y02A30/60
Inventor 李广盼李建文田昆仑陈述云张伟明王悦王晓坡苏明毛曙光徐岗翟金伟杨一然康业吕腾飞王正光
Owner HEBEI CONSTR GROUP ZHUOCHENG ROAD & BRIDGE ENG
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