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Composite protection plate and preparation method thereof

A technology of composite materials and protective plates, applied in bridge parts, bridge construction, bridges, etc., can solve problems such as degradation of interface bonding performance, loss of interface bonding performance, failure of reinforcement and repair, etc., and achieve high tensile and crack resistance, High anti-salt freezing effect

Active Publication Date: 2015-11-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after several salt-freezing cycles, the interface bonding performance between the reinforced surface layer and the base layer degrades, and the loss of interface bonding performance leads to the failure of the reinforcement repair.

Method used

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  • Composite protection plate and preparation method thereof
  • Composite protection plate and preparation method thereof
  • Composite protection plate and preparation method thereof

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Embodiment Construction

[0043] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0044] combined in Figure 1(a)-Figure 1(d) , Figure 2(a)-Figure 2(d) and Figure 3(a)-Figure 3(d) , the embodiment of the bridge reinforced concrete anti-collision wall protective plate unit of the present invention comprises four kinds of schemes altogether, and each scheme all comprises the first vertical section plate 1, the first slope plate 2, the second slope plate 3, the horizontal section plate 4. The upper end of the first vertical section plate 1 is connected to the lower end of the first slope plate 2, the upper end of the first slope plate 2 is connected to the lower end of the second slope plate 3, and the upper end of the second slope plate 3 is connected to the lower end of the horizontal section plate 4. connected at one end.

[0045] The first scheme and the second scheme also include a second vertical section plate 7 , the oth...

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Abstract

The invention provides a composite protection plate and a preparation method thereof. The composite protection plate comprises a protection plate unit of which the cross-section shape is matched with that of a protected body, and is characterized in that the protection plate unit is integrated by a composite, and the composite comprises the following components per cubic meter: 750-800 kg of cement, 150-250 kg of silica ash, 200-250 kg of quartz powder, 800-900 kg of quartz sand, 50-100 kg of steel fibers, 20-30 kg of a water reducer, 150-250 kg of water, 3.5-4 kg of a foam killer and 3.5-4 kg of a swelling agent. The invention mainly aims to achieve durability repair, snow and ice removing and scraping resistance and the like of existing reinforced concrete anti-collision walls and steel guardrail reinforced concrete bases of bridges, and achieves anti-collision grade and long-term service performance protection of existing reinforced concrete anti-collision members. According to the preparation method, the traditional one-step water adding is changed into twice water adding, so that relatively high fluidity is realized under the condition of relatively low water-cement ratio, and a standard fluidity experiment method is adopted to measure the expansion degree to obtain the result of being not less than 18 mm.

Description

technical field [0001] The invention relates to a special protective plate for repairing existing bridge reinforced concrete anti-collision walls and guardrail bases and an installation method thereof, and also relates to a preparation method of the special material for repairing the protective plate. Background technique [0002] According to the "Code for Design of Highway Traffic Safety Facilities" (JTGD81) and "Code for Design of Urban Bridges" (CJJ-2011), anti-collision barriers should be set up on both sides of highway bridges and urban bridges. One of the main application forms. In recent years, reinforced concrete anti-collision walls have become the main application form of highway bridges and urban bridge guardrails. [0003] Reinforced concrete anti-collision walls must not only meet the design anti-collision level, but also meet the requirements of aesthetic appearance. However, the reinforced concrete anti-collision walls of my country's urban bridges and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01D19/10
Inventor 吴香国邱金凯
Owner HARBIN INST OF TECH
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