Supercharge Your Innovation With Domain-Expert AI Agents!

High-performance concrete slow-controlled release water internal curing material and preparation method thereof

A high-performance concrete and water-releasing technology, which is applied in the field of concrete internal curing agent, high-performance concrete slow-controlled water-releasing internal curing material and its preparation, can solve the problems of reducing concrete strength and difficult to control the water-releasing rate of internal curing materials, etc. Achieve the effect of reducing cracking, increasing thermal stability and water retention capacity, and improving surface morphology

Active Publication Date: 2020-07-28
CHANGAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a high-performance concrete slow-controlled water release internal curing material and its preparation method, which solves the difficulty in controlling the water release rate of the existing internal curing materials and reduces the water release rate of concrete. technical issues of strength

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
  • High-performance concrete slow-controlled release water internal curing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a kind of high-performance concrete slow and controlled release water internal curing material, by weight fraction, is made of the following raw materials: 17.5% metakaolin, 12% diatomite, 9% graphene oxide, 7% % silane coupling agent, 3.5% sodium alginate, 5% xanthan gum, 3% slaked lime, 2.74% sodium acetate, 27% sodium acrylate, 12.5% ​​2-acrylamide-2-methyl Propanesulfonic acid, 0.06% crosslinker, 0.7% initiator.

[0042] In this example:

[0043] The particle size of metakaolin is 1500 mesh, SiO in metakaolin 2 The content is 40% to 60%.

[0044] The particle size of diatomite is 300 mesh, SiO in diatomite 2 The content of Fe is 80% to 90%. 2 o 3 Content≤1.2%.

[0045] The silane coupling agent is 3-aminopropanetriethoxysilane.

[0046] The particle size of slaked lime is 325 mesh, Ca(OH) in slaked lime 2 content ≥ 90%.

[0047] The crosslinker is made of polyvinyl alcohol and glycerin in a 1:1 weight ratio. The polyvinyl al...

Embodiment 2

[0062] This embodiment provides a kind of high-performance concrete slow and controlled release water interior curing material, is made of the following raw materials in terms of weight fraction: 17% metakaolin, 11% diatomite, 9.5% graphene oxide, 7.5% % silane coupling agent, 3.5% sodium alginate, 5.5% xanthan gum, 2.5% hydrated lime, 1.63% sodium acetate, 28% sodium acrylate, 13% 2-acrylamide-2-methyl Propanesulfonic acid, 0.07% crosslinker, 0.8% initiator.

[0063] The kind and consumption requirement of each raw material in the present embodiment are identical with embodiment 1.

[0064] The preparation method of the high-performance concrete slow-controlled release water internal curing material in this embodiment is basically the same as that in Embodiment 1.

[0065] The performance test process of this embodiment is basically the same as that of Example 1, and the content of the internal curing material is 0.5% of the cement content. The performance test results of th...

Embodiment 3

[0067] This embodiment provides a kind of high-performance concrete slow and controlled release water internal curing material, by weight fraction, made of the following raw materials: 20% metakaolin, 10% diatomite, 8% graphene oxide, 6 % silane coupling agent, 4% sodium alginate, 6% xanthan gum, 4% slaked lime, 0.95% sodium acetate, 30% sodium acrylate, 10% 2-acrylamide-2-methyl Propanesulfonic acid, 0.05% crosslinker, 1% initiator.

[0068] The kind and consumption requirement of each raw material in the present embodiment are identical with embodiment 1.

[0069] The preparation method of the high-performance concrete slow-controlled release water internal curing material in this embodiment is basically the same as that in Embodiment 1.

[0070] The performance test process of this embodiment is basically the same as that of Embodiment 1, and the performance test results of this embodiment are shown in Table 1.

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
particle size (mesh)aaaaaaaaaa
particle size (mesh)aaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention provides a high-performance concrete inner curing material realizing sustained and controlled release of water and a preparation method of the inner curing material. The inner curing material comprises the following raw materials: sodium alginate, xanthan gum, hydrated lime, sodium acetate, sodium acrylate, 2-acrylamide-2-methylpropanesulfonic acid, a cross-linking agent and an initiator, and also includes an organically modified metakaolin-diatomite-graphene oxide compound, wherein the organically modified metakaolin-diatomite-graphene oxide compound includes the following materials: metakaolin, diatomite, graphene oxide and a silane coupling agent. The inner curing material of the invention can significantly improve the compressive strength of concrete, and the 28-day compressive strength of concrete is 120% or more of the benchmark concrete strength. The 60-min concrete fluidity is significantly improved. In addition, the self-shrinkage of concrete can also be greatlyreduced. The inner curing material of the invention effectively solves the problems that the water release rate of a current inner curing material is difficult to control and the strength of concreteis reduced.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a concrete internal curing agent, in particular to a high-performance concrete slow-controlled release water internal curing material and a preparation method thereof. Background technique [0002] Due to its excellent mechanical properties, high-performance concrete can greatly increase the bearing capacity of components, or reduce the size of the component section when the bearing capacity is constant, thereby saving raw materials and improving the aesthetic effect of the building. Therefore, high-performance concrete has been widely used in high-rise buildings, long-span bridges and other projects. The biggest feature of high-performance concrete is the low water-binder ratio. The concrete structure is prone to large deformation due to self-shrinkage, which leads to the generation and cracking of high-strength concrete internal cracks, and the mechanical properties and durabili...

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): C04B24/16C04B20/10C04B14/10C04B14/02C04B14/08
CPCC04B20/1051C04B40/0039C04B14/106C04B14/024C04B14/08C04B24/168
Inventor 何锐谈亚文陈华鑫王铜黄鑫杨哲龙景潭
Owner CHANGAN UNIV
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