Intumescent anti-corrosion admixture and preparation method thereof

An intumescent and admixture technology, applied in the field of building materials, can solve the problems of high energy consumption, high cost, and limited resources in production, and achieve the effects of increasing utilization, reducing dependence, and improving crack resistance

Active Publication Date: 2022-01-04
武汉三源特种建材有限责任公司 +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resources of high-quality admixtures are limited, and the cost is high, and the production energy consumption is large

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
  • Intumescent anti-corrosion admixture and preparation method thereof
  • Intumescent anti-corrosion admixture and preparation method thereof
  • Intumescent anti-corrosion admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides an intumescent anti-corrosion admixture, which is made of the following raw materials in mass percentage: 60% fly ash, 20% slag powder (that is, the mass ratio of fly ash to slag powder is 3:1) , 13.97% light-burned magnesia, 5% calcium oxide expansion agent (the mass ratio of light-burned magnesia and calcium oxide expansion agent is 2.8:1), 1% gypsum, 0.03% sodium hexametaphosphate; The MgO content in calcined magnesia is 90.5%, the hydration activity value t is 120s, and the specific surface area is 275m 2 / kg, 1.18mm sieve residue is 0.2%; free calcium oxide (f-CaO) content is 55.2% in the described calcium oxide expansion agent, specific surface area is 256m 2 / kg, 1.18mm sieve residue is 0.4%; the gypsum is anhydrite;

[0024] The preparation method of described intumescent anti-corrosion additive comprises the following steps:

[0025] S1. Weigh the light-burned magnesia, calcium oxide expansion agent, gypsum, and sodium hexametaphospha...

Embodiment 2

[0028] This embodiment provides an intumescent anti-corrosion admixture, which is made of the following raw materials in mass percentage: 46% fly ash, 40% slag powder, 5.07% light-burned magnesium oxide, 7.9% calcium oxide expansion agent, 1% gypsum, 0.03% sodium hexametaphosphate; the MgO content in the light-burned magnesia is 89.3%, the hydration activity value t is 150s, and the specific surface area is 305m 2 / kg, 1.18mm sieve residue is 0.2%; free calcium oxide (f-CaO) content is 58.5% in the described calcium oxide expansion agent, specific surface area is 287m 2 / kg, 1.18mm sieve residue is 0.4%; the gypsum is desulfurized gypsum;

[0029] The preparation method of the intumescent anti-corrosion admixture is basically the same as that in Example 1. In step S1, the premixing time of light-burned magnesia, calcium oxide expansion agent, gypsum, and sodium hexametaphosphate is 10 minutes, and it is obtained after grinding The specific surface area of ​​fly ash is measured ...

Embodiment 3

[0031] This embodiment provides an intumescent anti-corrosion admixture, which is made of the following raw materials in mass percentage: 50% fly ash, 30% slag powder, 7.985% light-burned magnesium oxide, 10% calcium oxide expansion agent, 2% gypsum, 0.015% sodium hexametaphosphate; the MgO content in the light-burned magnesia is 89.3%, the hydration activity value t is 200s, and the specific surface area is 296m 2 / kg, 1.18mm sieve residue is 0.3%; free calcium oxide (f-CaO) content is 57.4% in the described calcium oxide expansion agent, specific surface area is 291m 2 / kg, 1.18mm sieve residue is 0.3%; the gypsum is hemihydrate gypsum;

[0032] The preparation method of the intumescent anti-corrosion additive is the same as that in Example 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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides an intumescent corrosion-resistant admixture and a preparation method thereof, and belongs to the technical field of building materials. The intumescent corrosion-resistant admixture is prepared from the following raw materials in percentage by mass: 40-60% of fly ash, 20-40% of slag powder, 5-15% of light calcined magnesia, 5-10% of a calcium oxide expanding agent, 1-2% of gypsum and 0.015-0.03% of sodium hexametaphosphate. According to the intumescentanti-corrosion admixture prepared by the preparation method disclosed by the invention, all the components are matched with one another, so that the defect of single doping of a single component can be overcome, and the crack resistance, the mechanical property and the durability of concrete are comprehensively improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an intumescent anti-corrosion admixture and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's construction industry, the performance requirements for concrete structures are also getting higher and higher. The performance of concrete should not only consider the workability and strength level of concrete, but also the crack control of concrete and the compactness of the structure itself. Meet the need for durability. Concrete shrinkage is an important factor that causes concrete cracking. In order to reduce the risk of concrete cracking and improve its durability, technicians in the construction industry have explored compensation for concrete shrinkage, reduction of early temperature rise of concrete, and improvement of concrete resistance from different perspectives such as technology an...

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 Applications(China)
IPC IPC(8): C04B22/16
CPCC04B40/0039C04B18/08C04B18/141C04B22/066C04B22/064C04B22/142C04B22/16Y02W30/91
Inventor 秦哲焕纪宪坤徐可郭城瑶方博
Owner 武汉三源特种建材有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap