Bridge span reduction method and special-purposed bridge span reduction backfill material

A technology of bridges and mixed materials, applied in the field of bridge span reduction and special bridge span reduction backfill material, can solve the problems of incapable of solving the problem of jumping at the bridge head, much maintenance in the later period, and poor economy, and achieves the reduction of density, good effect, and good use. handy effect

Inactive Publication Date: 2015-11-04
河南华泰新材科技股份有限公司
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole work process must be meticulous, the materials must be suitable, the construction period is longer, and the later maintenance is more, but it still cannot solve the problem of bridge head jumping, it can only be alleviated but not cured
[0006] It can be said that 70% of the maintenance cost of the bridge is spent on the re...

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
  • Bridge span reduction method and special-purposed bridge span reduction backfill material
  • Bridge span reduction method and special-purposed bridge span reduction backfill material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A special bridge span reduction and backfill material, comprising the following components by weight: cement: 350 parts, mixed material: 80 parts, water: 120 parts, regulator: 35 parts, foaming agent: 10 parts, microfoaming agent: 6 parts, waterproofing agent: 5 parts.

[0054] The mixed material in this example includes granulated blast furnace slag.

[0055] The conditioner in this embodiment includes water reducer, rubber powder, reinforcing agent and foam stabilizer.

[0056] Foaming agent is coconut acid diethanolamide in the present embodiment.

[0057] The cement used in this example is PC42.5 cement, and the microfoaming agent is prepared by diluting the foaming agent and water at a ratio of 1:2000 and microfoaming by a plunger pump.

[0058] The waterproofing agent described in this embodiment includes an inorganic aluminum salt waterproofing agent.

Embodiment 2

[0060] A special bridge span reduction and backfill material, comprising the following components by weight: cement: 220 parts, mixed material: 40 parts, water: 180 parts, regulator: 40 parts, foaming agent: 14 parts, microfoaming agent: 8 parts, waterproofing agent: 5 parts.

[0061] The mixed material in this embodiment includes coal gangue.

[0062] The conditioner in this embodiment includes water reducer, rubber powder, reinforcing agent and foam stabilizer.

[0063] In this embodiment, the foaming agent is liquid silica gel.

[0064]The cement used in this example is PC42.5 cement, and the microfoaming agent is prepared by diluting the foaming agent and water at a ratio of 1:2000 and microfoaming by a plunger pump.

[0065] The waterproofing agent described in this embodiment includes an inorganic aluminum salt waterproofing agent.

Embodiment 3

[0067] A special bridge span reduction and backfill material, comprising the following components by weight: cement: 300 parts, mixed material: 70 parts, water: 150 parts, regulator: 35 parts, foaming agent: 15 parts, microfoaming agent: 7 parts, waterproofing agent: 6 parts.

[0068] The mixed material in this embodiment includes carbide slag.

[0069] The conditioner in this embodiment includes water reducer, rubber powder, reinforcing agent and foam stabilizer.

[0070] In this embodiment, the foaming agent is coconut acid diethanolamide: the ratio of liquid silica gel is 2:1.

[0071] The cement used in this example is PC42.5 cement, and the microfoaming agent is prepared by diluting the foaming agent and water at a ratio of 1:2000 and microfoaming by a plunger pump.

[0072] The waterproofing agent described in this embodiment includes an inorganic aluminum salt waterproofing agent.

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

No PUM Login to view more

Abstract

The invention provides a bridge span reduction method and a special-purposed bridge span reduction backfill material. The material comprises the following components, by weight, 150-400 parts of cement, 20-120 parts of a mixed material, 50-200 parts of water, 15-50 parts of a regulator, 5-15 parts of a foaming agent, 2-10 parts of a micro-foaming agent, and 5-10 parts of a waterproofing agent. The lightweight foam soil provided by the invention is lightweight and has high strength. The material has a good overall performance. With the material, a soft soil area soil bearing capacity can be satisfied, and the bearing capacity of a backfilled foundation to the upper load can be satisfied. The load of a special subgrade is reduced, and subgrade settlement is reduced.

Description

technical field [0001] The invention relates to the technical field of roads and bridges, in particular to a bridge span reduction method and a special bridge span reduction backfill material. Background technique [0002] When the overpass bridge across the road is high, the conventional construction method is to solve the problem of the length of the conical slope at the back of the abutment. The result is that the total length of the bridge is often much greater than the required width of the road to be crossed. Originally, the problem of crossing the road that can be solved by a one-span bridge needs to be solved by at least three spans. There is a quality risk in the abutment; in order to resist the earth pressure, the cost of the pile foundation and abutment body of the thin-walled abutment must be greatly increased. [0003] The differential settlement at the bridge head and expansion joints (bridge head approach road) of conventional highways or the damage of the ex...

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
IPC IPC(8): C04B38/02C04B28/00C04B28/04E02D17/18
Inventor 张建华吴波成华振贵宋昊罡吕文朴楚风尘孙根生张磊
Owner 河南华泰新材科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap