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

A post-tensioned prestressed pipeline grouting agent

A technology of prestressed pipe and grouting agent, which is applied in the field of building materials to achieve the effect of ensuring compactness, low dosage and high fluidity

Inactive Publication Date: 2016-07-06
GANSU CHANGLONG HIGHWAY MAINTENANCE TECH RES INST CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A specific performance can be obtained by using one admixture, but there may be adverse effects on each other when multiple admixtures are used at the same time

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
  • A post-tensioned prestressed pipeline grouting agent
  • A post-tensioned prestressed pipeline grouting agent
  • A post-tensioned prestressed pipeline grouting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 A grouting agent for post-tensioned prestressed pipelines, which is obtained by uniformly stirring the following raw material components in weight percentage (kg) at a speed of not less than 1000r / min: water-reducing component 4.7 %, plastic expansion component 0.3%, mid-late expansion component 28.2%, stabilizing component 0.1%, retarding component 0.4%, defoaming component 0.3%, superfine active mineral admixture 47.1%; sulfoaluminic acid Salt cement 18.9%.

[0033] in:

[0034] The water-reducing component refers to the powdered polycarboxylate water-reducing agent with a water-reducing rate ≥ 20%, and the manufacturer is Suzhou Fuke New Building Materials Co., Ltd.

[0035] The plastic expansion component refers to the plastic expansion agent, and the manufacturer is Beijing Wanji Jianye Co., Ltd.

[0036] The middle and later expansion components refer to UEA expansion agent, and the manufacturer is Lanzhou Tianchuang Keyuan New Building Materials Co., ...

Embodiment 2

[0046]Example 2 A grouting agent for post-tensioned prestressed pipelines, which is obtained by uniformly stirring the following raw material components in weight percentage (kg) at a speed of not less than 1000r / min: water-reducing component 5.1 %, plastic expansion component 0.5%, mid-late expansion component 30.1%, stabilizing component 0.2%, retarding component 0.5%, defoaming component 0.5%, ultrafine active mineral admixture 43.0%; sulfoaluminic acid Salt cement 20.1%.

[0047] in:

[0048] Water-reducing components, plastic expansion components, defoaming components, and sulphoaluminate cement are the same as in Example 1.

[0049] The middle and late expansion component refers to HEA expansion agent, and the manufacturer is Nanjing Pioneer Technology Industrial Co., Ltd.

[0050] The stabilizing component refers to hydroxypropyl methylcellulose, and the manufacturer is Gomez Chemical (China) Co., Ltd.

[0051] The retarding component refers to sodium gluconate, and ...

Embodiment 3

[0057] Example 3 A grouting agent for post-tensioned prestressed pipelines, which is obtained by uniformly stirring the following raw material components in weight percentage (kg) at a speed of not less than 1000r / min: water-reducing component 5.0 %, plastic expansion component 0.4%, mid-late expansion component 29.8%, stabilizing component 0.2%, retarding component 0.5%, defoaming component 0.4%, superfine active mineral admixture 43.3%; sulfoaluminic acid Salt cement 20.4%.

[0058] in:

[0059] The water-reducing component, plastic expansion component, defoaming component, sulphoaluminate cement, mid-late expansion component, stabilizing component, retarding component, and ultrafine active mineral admixture are the same as in Example 1.

[0060] When in use, the grouting agent is used to replace 11% of the amount of Portland or ordinary Portland cement with a strength not lower than 42.5, and the water-binder ratio is 0.27, and it is stirred evenly to make a grouting mater...

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 relates to a post-tensioned pre-stressing pipeline grouting agent, which is obtained by uniformly stirring the following raw materials according to weight percentage with rotating speed of no lower than 1000r / min: 4.7-5.1% of water reducing component, 0.3-0.5% of plastic expansion component, 28.2-30.1% of middle- to late-stage swelling component, 0.1-0.2% of stabilization component, 0.3-0.5% of delayed coagulation component, 0.3-0.5% of defoaming component, 43.0-47.1% of ultrafine active mineral admixture material and 18.9-20.4% of sulphoaluminate cement. The post-tensioned pre-stressing pipeline grouting agent has good performance, can satisfy requirement of industrialized production and can satisfy requirement of on-site construction preparation, construction operation is simple, and the grouting agent is especially suitable for post-tensioned pre-stressing pipeline grouting construction of large-scale engineering such as road, bridge and nuclear power station.

Description

technical field [0001] The invention relates to the technical application field of building materials, in particular to a post-tensioning prestressed pipeline grouting agent. Background technique [0002] The quality of channel grouting directly affects the efficiency of prestressing and the durability of structures. The occurrence of many bridge accidents and early maintenance and reinforcement, and the grouting of the tunnels, there are pores caused by the bleeding and shrinkage of the grouting material, the grouting is not dense, not full, water is retained or infiltrated in the pores, and the prestressed tendons cannot get cement slurry The anti-rust protection has a lot to do with the decrease of the bearing capacity of the bridge. [0003] At present, many construction units adopt the method of mixing expansion agent and water reducing agent in cement, which often causes insufficient grouting due to poor construction management, or poor grip with prestressed steel str...

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 Patents(China)
IPC IPC(8): C04B28/06
Inventor 李晓民赵璠新李刊张国宏魏定邦赵静卓杨敬礼丁民王晖曹青霞郭怀存杨小森冯中良张兴军陈天峰李丽
Owner GANSU CHANGLONG HIGHWAY MAINTENANCE TECH RES INST 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