Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

UHPC bridge deck pavement structure and preparation method thereof

A bridge deck paving and paving technology, used in bridges, bridge parts, bridge construction, etc., can solve the problems of limited fiber length and dosage, meet the requirements of crack resistance, avoid the binding of steel mesh, and improve the efficiency. The effect of utilization

Active Publication Date: 2022-03-04
JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present invention proposes to use layering method to lay UHPC layer material, long fiber layer, interlayer adhesive and fiber grid cloth multiple times, and the UHPC composite structure constructed solves the problem of UHPC preparation process by mixing method. Fiber length and dosage are limited, UHPC toughness and the contradiction between pavement structure and construction technology finally provide a UHPC composite material and structure suitable for bridge deck pavement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • UHPC bridge deck pavement structure and preparation method thereof
  • UHPC bridge deck pavement structure and preparation method thereof
  • UHPC bridge deck pavement structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A UHPC bridge deck paving structure, the paving structure includes a plurality of paving units, and the paving units include a UHPC layer 1, an interlayer adhesive layer 2, a long fiber layer 3, a UHPC layer 1, an interlayer adhesive layer 2, a long fiber layer 3, The grid cloth layer 4, the interlayer adhesive layer 2, the paving unit is cycled many times, and finally the UHPC layer 1 is used to seal the layer.

[0049] The component content in each paving unit is as follows:

[0050] The materials of the UHPC layer include 2500 parts by mass of dry blend, 100 parts by mass of short fibers and 200 parts by mass of water; the total mass of the adhesive layer between the two layers is 80 parts by mass; the long fiber layer is 250 parts by mass; the mesh cloth layer 50 parts by mass.

[0051] The dry mix consists of 1200 parts by mass of premixed powder, 1200 parts by mass of aggregate, and 100 parts by mass of thixotropic regulator.

[0052] The premixed powder is comp...

Embodiment 2

[0073] A UHPC bridge deck paving structure, the paving structure includes a plurality of paving units, and the paving units include a UHPC layer 1, an interlayer adhesive layer 2, a long fiber layer 3, a UHPC layer 1, an interlayer adhesive layer 2, a long fiber layer 3, The grid cloth layer 4, the interlayer adhesive layer 2, the paving unit is cycled many times, and finally the UHPC layer 1 is used to seal the layer.

[0074] The component content in each paving unit is as follows:

[0075] The UHPC layer includes 1500 parts by mass of dry blend, 50 parts by mass of short fibers, and 90 parts by mass of water;

[0076] The long fiber layer includes 400 parts by mass of long fibers; the interlayer adhesive layer includes 150 parts by mass of the interlayer adhesive; and the mesh cloth layer includes 70 parts by mass of fiber mesh cloth.

[0077] The dry mix consists of 600 parts by mass of premixed powder, 800 parts by mass of aggregate, and 100 parts by mass of thixotropic ...

Embodiment 3

[0098] A kind of UHPC bridge deck pavement structure, described pavement structure comprises a plurality of pavement units, and described pavement unit comprises UHPC layer 1, interlayer adhesive layer 2, long fiber layer 3, Mesh cloth layer 4, interlayer adhesive layer 2, the pavement unit is cycled several times, and finally sealed with UHPC layer 1.

[0099] The component content in each pavement unit is as follows:

[0100] The UHPC layer includes 2800 parts by mass of dry blend, 180 parts by mass of short fibers, and 240 parts by mass of water; the long fiber layer includes 300 parts by mass of long fibers; the layer of interlayer binder includes 100 parts by mass of Bonding agent between; described mesh cloth layer comprises the fiber mesh cloth of 30 mass parts.

[0101] The dry mix consists of 1200 parts by mass of premixed powder, 1400 parts by mass of aggregate, and 200 parts by mass of a thixotropic regulator.

[0102] The premixed powder consists of 700 parts by ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of road engineering, in particular to a UHPC bridge deck pavement structure and a preparation method thereof. The paving structure comprises a paving unit, the paving unit comprises a UHPC layer, an interlayer binder layer, a long fiber layer, a gridding cloth layer and an interlayer binder layer which are sequentially arranged, the paving unit is circulated for multiple times, and finally, the UHPC layer is used for sealing. According to the invention, the use mode that the fibers and the mortar are mixed, conveyed and paved together in the traditional UHPC is abandoned, the short fibers and the long fibers are introduced into the UHPC, the adding opportunity and mode of the fibers with two sizes are adjusted, and the short fibers and the UHPC mortar are mixed in advance, so that the toughness of the UHPC is improved at one time on the premise that the construction difficulty is not increased.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a UHPC bridge deck paving structure and a preparation method thereof. Background technique [0002] Because of its ultra-dense, high specific strength, and high toughness, UHPC can specifically solve the problem of frequent fatigue diseases of steel bridge decks and frequent damage of traditional asphalt pavement in my country. It is applied in orthotropic steel bridge deck pavement scenarios. It has broad prospects, but there are still many technical difficulties in the current paving materials, structures and preparation methods, which restrict its large-scale application. [0003] Steel bridge deck UHPC pavement usually adopts a structural scheme with a thickness of 5-10cm, a width of 10-30m, a length of 500-2000m, and no expansion joints. Rebar, the typical value of rebar spacing is 37.5×37.5mm. Too small spacing of reinforcing meshes limits the size of aggregates, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12C04B28/04
CPCE01D19/125C04B28/04C04B2201/50C04B2111/0075C04B18/08C04B18/141C04B14/28C04B2103/302C04B22/142C04B14/02C04B14/104Y02W30/91
Inventor 张志祥李款潘友强陈李峰李思齐莫剑臣詹从明
Owner JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com