High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof

A cementitious material, broad-spectrum technology, applied in the field of building materials, can solve the problems of reducing production cost, low utilization rate of industrial waste, and high production cost, and achieves the effect of reducing the source of reaction, increasing the permeability resistance, and preventing the intrusion channel.

Inactive Publication Date: 2007-10-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The types of sulfate attack targeted by such inventions are generally relatively single, and there are limitations in different erosion environments, and there are also great differences in the effect
On the other hand, the utilization rate of industrial waste in this invention is low and the production cost is high, so it is necessary to further reduce the production cost

Method used

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  • High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof
  • High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof
  • High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: as shown in Figure 2, the preparation method of broad-spectrum sulfur-resistant cementitious material comprises the following steps: 1). The pretreatment of blast furnace water-quenched slag: select the commercially available blast-furnace water-quenched slag that meets national standards, and It is dried, and the moisture content after drying is 0.5-1.9%, and it is ready for use; 2). Preparation of pre-ground steel slag powder: the converter steel slag processed by the shallow pan water quenching process, the grain size of the incoming grinding is less than 5%, and the Blaine specific surface area 350-400m 2 / kg, after the pre-grinding iron removal process, the moisture content after drying is less than 2%; its f-CaO content is less than 5%, and the MgO content is less than 8%, so pre-grinding steel slag powder is obtained for future use; 3). Preparation: As shown in Figure 1, the functional component is modified phosphogypsum, and the preparation of modi...

Embodiment 2

[0051] Embodiment 2: as shown in Figure 2, the preparation method of broad-spectrum sulfur-resistant cementitious material comprises the following steps: 1). The pretreatment of blast furnace water-quenched slag: select the commercially available blast-furnace water-quenched slag that meets the national standard, and It is dried, and the moisture content after drying is required to be less than 2%, and it is used for standby; 2). Preparation of pre-grinded steel slag powder: the converter steel slag processed by the shallow pan water quenching process, the grain size of the incoming grinding is less than 5%, and the iron is removed by pre-grinding process, the moisture content after drying is less than 2%; its f-CaO content is less than 5%, and the MgO content is less than 8%, so as to obtain pre-ground steel slag powder for future use; 3). Preparation of functional components: the functional components To modify phosphogypsum, the preparation of modified phosphogypsum: accordi...

Embodiment 3

[0052] Embodiment 3: as shown in Figure 2, the preparation method of broad-spectrum sulfur-resistant cementitious material comprises the following steps: 1). The pretreatment of blast furnace water-quenched slag: select the commercially available blast-furnace water-quenched slag that meets the national standard, and It is dried, and the moisture content after drying is required to be less than 2%, and it is used for standby; 2). Preparation of pre-grinded steel slag powder: the converter steel slag processed by the shallow pan water quenching process, the grain size of the incoming grinding is less than 5%, and the iron is removed by pre-grinding process, the moisture content after drying is less than 2%; its f-CaO content is less than 5%, and the MgO content is less than 8%, so as to obtain pre-ground steel slag powder for future use; 3). Preparation of functional components: the functional components In order to modify phosphogypsum, the preparation of modified phosphogypsum...

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Abstract

An efficient broad-spectrum sulfur-resistant cementing material able to resist against the corrosion of multiple sulfates is proportionally prepared from cement clinker, the water-quenched slags of blast furnace, pre-ground steel slag, the functional component and modifier through grinding.

Description

technical field [0001] The invention belongs to building materials, and in particular relates to a sulfur-resistant gelling material and a preparation method thereof. Background technique [0002] As we all know, my country is a frequent area of ​​concrete sulfate erosion damage. And due to different regions and climates, there are many types of concrete sulfate erosion (mainly ettringite type, gypsum type, Thaumasite type, etc.). At present, in order to solve the problem of sulfate corrosion resistance of concrete, the technical means commonly used in engineering circles is to apply high sulfate-resistant special cement. In this regard, there have been a lot of researches at home and abroad, and there are a lot of literature. [0003] The main technical contents of these documents are: [0004] Control of mineral composition of cement clinker (ie control of C 3 S, C 3 A.C 4 The proportion of AF, etc.) and adjustment, promote the early strength of concrete, improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/14C04B24/00C04B111/20C04B111/72C04B103/61
CPCY02W30/91
Inventor 马保国罗忠涛高小建朱洪波张美香
Owner WUHAN UNIV OF TECH
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