Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of reinforced concrete expansion agent and preparation method thereof

A technology of concrete and expansion agent, applied in the field of concrete admixtures, can solve the problems of resource waste, ecological environment pollution, low industrial utilization rate of citric acid residue and bioleaching residue, etc. The effect of economic benefits

Active Publication Date: 2021-06-08
JIANGXI XINSHENG IND
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems existing in the prior art, the present invention provides an enhanced concrete expansion agent, which solves the problems of low industrial utilization rate of citric acid slag and bioleaching residue, waste of resources, pollution to the ecological environment, etc., and is effective at the same time Improve the structure and performance of the hardened concrete interface transition zone, improve the mechanical properties of concrete, and compensate for the volume shrinkage of concrete during service, which has great social and economic benefits

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 kind of reinforced concrete expansion agent and preparation method thereof
  • A kind of reinforced concrete expansion agent and preparation method thereof
  • A kind of reinforced concrete expansion agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of reinforced concrete expansive agent, comprises the component of following percentage by weight: expansion clinker 40%, citric acid slag 30%, chalcocite (Cu 2 S) 14.5% of leaching slag from microbial beneficiation, 10% of nano silicon dioxide, 3% of sodium silicate, and 2.5% of silane coupling agent Si75.

[0038] The expanded clinker includes the following components in weight percentage: 78.15% CaO, 7.02% SO 3 , 4.66% SiO 2 , 3.85% Al 2 o 3, 0.99% Fe 2 o 3 , 0.42% MgO, 0.21% B 2 o 3 ; The content of f-CaO in the expanded clinker is 63.29%.

[0039] The alkali content in the expanded clinker is 0.16%, the loss on ignition is 0.17%, based on the total weight of the expanded clinker; and the 7d limiting expansion ratio in the expanded clinker water is 0.187%.

[0040] SO in citric acid residue 3 The content is 51.32%, the moisture content is 0.21%, and the specific surface area is 368m 2 / kg; Chalcocite (Cu 2 S) The moisture content of the microbial b...

Embodiment 2

[0046] This embodiment is basically the same as Embodiment 1, the difference is: a kind of enhanced concrete expansion agent, comprising the following components in weight percentage: expansion clinker 48%, citric acid slag 18.5%, chalcocite (Cu 2 S) 14.7% of microbial beneficiation leaching slag, 14.6% of nano silicon dioxide, 3% of sodium silicate, and 1.2% of silane coupling agent Si7.

Embodiment 3

[0048] The present embodiment is basically the same as Embodiment 1, except that a kind of reinforced concrete expansion agent comprises the following components in weight percentage: 50% of expansion clinker, 25% of citric acid slag, chalcocite (Cu 2 S) 10.4% of leaching slag from microbial beneficiation, 10.6% of nano silicon dioxide, 1.5% of sodium silicate, and 92.5% of silane coupling agent Si.

[0049] The expanded clinker includes the following components in weight percentage: 77.23% CaO, 7.57% SO 3 , 5.93% SiO 2 , 3.42% Al 2 o 3 , 1.24% Fe 2 o 3 , 0.23% MgO, 0.15% B 2 o 3 ; The content of f-CaO in the expanded clinker is 59.85%.

[0050] The alkali content in the expanded clinker is 0.11%, the loss on ignition is 0.47%, based on the total weight of the expanded clinker; and the 7d limiting expansion ratio in the expanded clinker water is 0.234%.

[0051] A preparation method of reinforced concrete expansive agent is basically the same as Example 1, except that:...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides an enhanced concrete expansion agent and a preparation method thereof, which is made of the following raw materials in weight percentage: 40-65% of expansion clinker, 15-35% of citric acid slag, 5-5% of metal sulfide ore microbial dressing leaching slag 15%, nano silicon dioxide 10-15%, sodium silicate 1-5%, silane coupling agent 1-3%. The enhanced concrete expansion agent provided by the invention solves the problems of low industrial utilization rate of citric acid slag and bioleaching residue, waste of resources, pollution to the ecological environment, etc., and at the same time effectively improves the structure and performance of the hardened concrete interface transition zone, and improves concrete mechanics. performance, and compensate for the volume shrinkage of concrete during service, which has great advantages in social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a reinforced concrete expansion agent and a preparation method thereof. Background technique [0002] In the past ten years, with the popularization and application of "commercial concrete", the use of organic and inorganic additives such as high-efficiency water reducer, fly ash, and finely ground slag powder has become more and more widely used. Concrete technology has continued to develop, but the problem of concrete cracks has been plagued Technical staff. In order to obtain high-strength or even ultra-high-strength concrete, the water-cement ratio is gradually reduced, which will inevitably lead to shrinkage of concrete. A lot of attention has been paid to shrinkage, but not the shrinkage itself, but the cracking of the concrete that it brings about. Shrinkage-compensated concrete mixed with expansion agent is an effective method to prevent and reduce concrete ...

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): C04B24/42
CPCC04B40/0039C04B24/42C04B12/04C04B22/06C04B22/146C04B22/008C04B22/0006
Inventor 罗成杨国刚郭虹亮
Owner JIANGXI XINSHENG IND
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