Check patentability & draft patents in minutes with Patsnap Eureka AI!

Polycarboxylic acid highly-slump-retaining additive for concrete and preparation method thereof

An admixture, polycarboxylic acid technology, applied in the field of concrete admixtures, can solve problems such as difficult pumping, large loss of concrete slump, poor fluidity, etc., to improve slump retention performance and workability, and facilitate on-site construction , Guarantee the effect of constructability

Pending Publication Date: 2020-01-17
重庆市潼南区富景新材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polycarboxylate admixtures cannot well deal with the negative effects of poor raw material quality. Therefore, during construction, concrete often encounters the problem of difficult pumping due to large slump loss and poor fluidity.
At present, many concretes use compound admixtures to increase the retarding component or increase the proportion of the slump-preserving component to improve the phenomenon of large losses. However, increasing the retarding component does not take advantage of construction and post-site demolition, and increasing the proportion of the slump-preserving component will greatly increase Increase the cost and the effect is not necessarily obvious

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
  • Polycarboxylic acid highly-slump-retaining additive for concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare material A: add 50.45g of water to the container, then add 21.18g of AA, 0.22g of HA and AM, mix well and set aside;

[0039] Prepare material B: add 69.29g of water to the container, then add 0.81g of TGA and 0.4g of VC, mix well and set aside;

[0040] Add 120g of water into the reactor, then put in 180g of TPEG, start stirring until it is fully dissolved, and raise the temperature to 50°C; when the TPEG is completely dissolved, add 1g of initiator hydrogen peroxide, stir for 30min, then start to drop A and B materials, A The material is added dropwise for 1-4 hours, the material B is added dropwise for 1-5 hours, after the completion of the dropwise addition, it is incubated for 1-4 hours, then neutralized to neutral with 30% NaOH, and finally 56.43g of water is added to obtain the product FB-2.

Embodiment 2

[0042] Prepare material A: add 50.45g of water to the container, then add 20.32g of AA, 0.65g of HA and AM, mix well and set aside;

[0043] Prepare material B: add 69.29g of water to the container, then add 0.81g of TGA and 0.4g of VC, mix well and set aside;

[0044] Add 120g of water into the reactor, then put in 180g of TPEG, start stirring until it is fully dissolved, and raise the temperature to 50°C; when the TPEG is completely dissolved, add 1g of initiator hydrogen peroxide, stir for 30min, then start to drop A and B materials, A The material is added dropwise for 1-4 hours, and the material B is added dropwise for 1-5 hours. After the dropwise addition, it is incubated for 1-4 hours, then neutralized to neutral with 30% NaOH, and finally 56.43 g of water is added to obtain the product FB-3.

Embodiment 3

[0046] Prepare material A: add 50.45g of water to the container, then add 19.46g of AA, 1.08g of HA and AM, mix well and set aside;

[0047]Prepare material B: add 69.29g of water to the container, then add 0.81g of TGA and 0.4g of VC, mix well and set aside;

[0048] Add 120g of water into the reactor, then put in 180g of TPEG, start stirring until it is fully dissolved, and raise the temperature to 50°C; when the TPEG is completely dissolved, add 1g of initiator hydrogen peroxide, stir for 30min, then start to drop A and B materials, A The material is added dropwise for 1-4 hours, the material B is added dropwise for 1-5 hours, after the dropwise addition is completed, it is incubated for 1-4 hours, then neutralized to neutral with 30% NaOH, and finally 56.43 g of water is added to obtain the product FB-4.

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 polycarboxylic acid highly-slump-retaining additive for concrete and aims to improve the slump-retaining property and peaceability of the concrete under the conditions that the quality of the concrete raw material is reduced and the transportation distance of commercial concrete is increased so as to be favorable for onsite construction and guarantee the quality of the commercial concrete. The polycarboxylic acid highly-slump-retaining additive for the concrete comprises the following components in parts by mass: 170 to 190 parts of isopentenol polyoxyethylene ether (TPEG), 18.59 to 21.4 parts of acrylic acid (AA), 0.22 to 1.51 parts of functional small monomer (HA), 0.22 to 1.51 parts of acrylic amide (AM), 0.8 to 0.9 part of thioglycollic acid (TGA), 0.1 to 0.5part of ascorbic acid (VC) and 1 to 2 parts of initiator. The invention also discloses a preparation method of the polycarboxylic acid highly-slump-retaining additive for the concrete.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a polycarboxylic acid high slump retention admixture for concrete and a preparation method thereof. Background technique [0002] With the progress of the times, people's building quality is getting higher and higher, and today's buildings are inseparable from cement concrete. Modern concrete mainly develops from the trends of high fluidity, high compactness, adjustable cohesion, high durability, and high strength. At the same time, the process of preparing concrete should start from the aspects of low cost and easy molding. Only with these can meet the needs of modern society . In order to make concrete have these characteristics, a material is often added during the preparation process or before processing to improve the performance of its concrete. This material is called a concrete admixture. In modern technology, admixtures are added to concrete to change its performance...

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): C08F283/06C08F220/06C08F222/02C04B24/26
CPCC04B24/2694C08F283/06C08F220/06C08F222/02
Inventor 范志徐美清钟国才闵书孟
Owner 重庆市潼南区富景新材料科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com