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A kind of foam concrete used for bridge deck pavement

A foamed concrete and bridge deck paving technology, applied in the field of foamed concrete, can solve the problems of large shrinkage, poor load-bearing capacity, unstable volume, etc.

Active Publication Date: 2022-02-01
中铁大桥局集团第六工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a foam concrete for bridge deck pavement and a preparation method thereof to solve the problems of poor load-bearing capacity, large later shrinkage and unstable volume of the existing foam concrete

Method used

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  • A kind of foam concrete used for bridge deck pavement
  • A kind of foam concrete used for bridge deck pavement
  • A kind of foam concrete used for bridge deck pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0037] Prepare the raw materials according to the mixing ratio shown in Table 1. When the blowing agent is used, add water and dilute it 20 times to form a foam solution. The raw materials in the above mixing ratio are mixed evenly by a concrete mixer, and fully mixed by a foaming system to form foamed concrete.

[0038] The mix ratio of the foamed concrete that table 1 embodiment 1-7 provides

[0039]

[0040]

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Abstract

The invention discloses a foam concrete used for bridge deck pavement. The raw materials and matching ratio are as follows: cement 420-467kg / m 3 ; Fly ash 67~80kg / m 3 ;Slag powder 133~167kg / m 3 ;River sand 267~334kg / m 3 ; Foaming agent 0.5~1.0kg / m 3 ;Polycarboxylate high-performance water reducer 2.0~3.3kg / m 3 ;Groundwater 213~227kg / m 3 ; Wherein, the specification model of foaming agent is F-800 type high-efficiency polymer cement foaming agent. The foam concrete has good workability, segregation resistance, foam uniformity and volume stability, which can ensure that the bridge deck can quickly complete the foam concrete filling construction. Its strength level can reach C5.0, and the expansion degree of the foam concrete can reach To achieve a good state, while the wet density is appropriate, the strength meets the design requirements.

Description

technical field [0001] The invention relates to the field of foam concrete, in particular to a foam concrete used for bridge deck pavement. Background technique [0002] Foamed concrete is a new type of lightweight thermal insulation material containing a large number of closed pores. In the construction stage, the foamed concrete is poured on the roof of the building or indoors, which plays a role in heat preservation and heat insulation of the building. Due to the heightening of the entire bridge deck structure of arched bridges, the thickness of the bridge deck pavement layer increases accordingly. If all ordinary concrete is cast in place, the self-weight load of the entire bridge will be greatly increased, which is extremely detrimental to the structural safety of the entire bridge. [0003] In related technologies, in order to reduce the load of arch bridges, foam concrete can be used for construction. First pour foam concrete for filling, and then pour C50 pavement o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/10
CPCC04B28/04C04B38/10C04B2201/50C04B2201/20C04B2111/0075C04B18/08C04B18/141C04B14/06C04B2103/302C04B22/002
Inventor 吴传华刘琴梅朱昌华杨胜民李新华黄松吴金刚景昕
Owner 中铁大桥局集团第六工程有限公司
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