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

Special polycarboxylic water reducer for high mud content system super-long slump loss resistant concrete

A polycarboxylic acid-based and concrete technology, applied in the field of concrete admixtures, can solve the problems of poor cement adaptability and too fast concrete slump, and achieve the effects of excellent slump retention, good adaptability and excellent performance.

Inactive Publication Date: 2018-11-06
JIANGSU BAIRUIJI NEW MATERIAL
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polycarboxylate superplasticizers we use currently have problems such as poor adaptability to cement and too fast concrete slump.

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
  • Special polycarboxylic water reducer for high mud content system super-long slump loss resistant concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A special polycarboxylate water reducer for ultra-long slump-retaining concrete with high mud content, which is composed of the following raw materials in parts by weight:

[0025] 15 parts of itaconic acid, 20 parts of acrylic acid, 15 parts of maleic anhydride, 5 parts of ammonium persulfate, 4 parts of sodium sulfite, 4 parts of retarder, 8 parts of TPEG, 2 parts of initiator, 3 parts of chain transfer agent, and 1 part of preservative.

[0026] A special polycarboxylate water-reducing agent for super-long slump-retaining concrete with high mud content and a preparation process comprising the following steps:

[0027] Step 1: Weigh the parts by weight of the components and set aside;

[0028] Step 2: Add an appropriate amount of itaconic acid, maleic anhydride, and TPEG into the container, add an appropriate amount of water into the container, heat, and stir to dissolve it;

[0029] Step 3: Add sodium sulfite to the completely dissolved solution and continue to stir...

Embodiment 2

[0032] A special polycarboxylate water reducer for ultra-long slump-retaining concrete with high mud content, which is composed of the following raw materials in parts by weight:

[0033] 20 parts of itaconic acid, 35 parts of acrylic acid, 25 parts of maleic anhydride, 12 parts of ammonium persulfate, 9 parts of sodium sulfite, 11 parts of retarder, 12 parts of TPEG, 5 parts of initiator, 6 parts of chain transfer agent, 3 parts of preservative.

[0034] A special polycarboxylate water-reducing agent for super-long slump-retaining concrete with high mud content and a preparation process comprising the following steps:

[0035] Step 1: Weigh the parts by weight of the components and set aside;

[0036] Step 2: Add an appropriate amount of itaconic acid, maleic anhydride, and TPEG into the container, add an appropriate amount of water into the container, heat, and stir to dissolve it;

[0037] Step 3: Add sodium sulfite to the completely dissolved solution and continue to stir...

Embodiment 3

[0040] A special polycarboxylate water reducer for ultra-long slump-retaining concrete with high mud content, which is composed of the following raw materials in parts by weight:

[0041] 18 parts of itaconic acid, 26 parts of acrylic acid, 20 parts of maleic anhydride, 8 parts of ammonium persulfate, 6 parts of sodium sulfite, 5 parts of retarder, 10 parts of TPEG, 4 parts of initiator, 5 parts of chain transfer agent, 2 parts of preservative.

[0042] A special polycarboxylate water-reducing agent for super-long slump-retaining concrete with high mud content and a preparation process comprising the following steps:

[0043] Step 1: Weigh the parts by weight of the components and set aside;

[0044] Step 2: Add an appropriate amount of itaconic acid, maleic anhydride, and TPEG into the container, add an appropriate amount of water into the container, heat, and stir to dissolve it;

[0045] Step 3: Add sodium sulfite to the completely dissolved solution and continue to stir. ...

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 discloses a special polycarboxylic water reducer for a high mud content system super-long slump loss resistant concrete. The special polycarboxylic water reducer comprises the followingraw materials by weight: 15-20 parts of itaconic acid, 20-35 parts of crylic acid, 15-25 parts of maleic anhydride, 5-12 parts of ammonium persulfate, 4-9 parts of sodium sulfite, 4-11 parts of retarder, 8-12 parts of TPEG, 2-5 parts of initiator, 3-6 parts of chain transfer agent, and 1-3 parts of corrosion remover. The design principle of the molecular structure is used, itaconic acid, maleic anhydride and crylic acid are taken as polymerization monomers to react with the retarder, the TPEG, the ammonium persulfate and the sodium sulfite under the action of the initiator and the chain transfer agent, the free radical is polymerized, the polycarboxylic water reducer is obtained, the cost of the water reducer is low, the slump loss resistant performance is excellent, the slump loss of theconcrete is basically not changed for 1 hour, the water reducer is green and environmentally friendly and is excellently adaptive to the cement, the performance is obviously better than that of the like product, and the water reducer is worthy of extensive promotion.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a special polycarboxylate water reducer for super-long slump-retaining concrete with high mud content. Background technique [0002] Concrete, referred to as "concrete" for short: refers to the collective name of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] When concrete is used, admixtures are added, and polycarboxylate superplasticizer is one of them. Polycarboxylate superplasticizer is a cement dispersant used in cement concrete. Widely used in highways, bridges, dams, tunnels, high-rise building...

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): C08F283/06C08F220/06C08F222/02C08F222/06C08F2/38C04B24/26C04B103/30
CPCC08F283/065C04B24/2694C04B2103/302C08F2/38C08F222/02C08F222/06C08F220/06
Inventor 王亚军卢祎
Owner JIANGSU BAIRUIJI NEW MATERIAL
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