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High activity mixture slurry with several mineral components and its prepn process

A multi-mineral and admixture technology, applied in the field of building materials, can solve the problems of high-efficiency utilization of waste cement paste, no systematic research reports, low utilization rate of wet-drained fly ash, low water resistance requirements, etc., to reduce one time Sexual resource utilization, significant socio-economic and environmental benefits, and low-cost effects

Inactive Publication Date: 2007-03-21
WUHAN UNIV OF TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, there have been a large number of reports on the use of wet-discharged fly ash: mainly used in the preparation of cement mixtures, concrete admixtures, and some foundation filling projects that do not require high water resistance, but there are low utilization rates of wet-discharged fly ash, Problems such as high energy consumption costs and poor product quality; however, there have been no systematic research reports on the technical research on the efficient use of waste cement paste

Method used

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  • High activity mixture slurry with several mineral components and its prepn process

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Embodiment 1

[0027] Embodiment 1: as shown in Figure 1, a kind of highly active multi-mineral component admixture slurry preparation method, it comprises the steps:

[0028] 1) Selection of raw materials: a. Select waste cement paste, measure the actual water content and sand content of the waste cement paste, separate the sand and stone through effective screening, and age the matrix gelling components for future use; The water content of the waste cement slurry is 30-40%, the content of free calcium oxide is ≤2.5%, the content of sulfur trioxide is ≤3%, and the sand content is ≤10%; the Blaine specific surface area is 300-400m 2 / Kg;

[0029] b. Select the wet-discharged fly ash, measure the actual moisture content and carbon content of the wet-discharged fly ash, and age it for later use; the moisture content of the wet-discharged fly ash is 25-35%, and the content of free calcium oxide is ≤2.5%. Sulfur trioxide content ≤ 3%, carbon content ≤ 12%; Blaine specific surface area is 350-40...

Embodiment 2

[0040] A preparation method for highly active mineral admixture slurry, which comprises the steps of:

[0041]1) Selection of raw materials: a. Select waste cement paste, measure the actual water content and sand content of the waste cement paste, separate the sand and stone through effective screening, and age the matrix gelling components for future use; The water content of the waste cement slurry is 30-40%, the content of free calcium oxide is ≤2.5%, the content of sulfur trioxide is ≤3%, and the sand content is ≤10%; the Blaine specific surface area is 300-400m 2 / Kg;

[0042] b. Select the wet-discharged fly ash, measure the actual moisture content and carbon content of the wet-discharged fly ash, and age it for later use; the moisture content of the wet-discharged fly ash is 25-35%, and the content of free calcium oxide is ≤2.5%. Sulfur trioxide content ≤ 3%, carbon content ≤ 12%; Blaine specific surface area is 350-400m 2 / Kg;

[0043] 2) Modifier preparation: accor...

Embodiment 3

[0046] A kind of preparation method of high activity wet row fly ash admixture slurry, it comprises the steps:

[0047] 1) Selection of raw materials: a. Select waste cement paste, measure the actual water content and sand content of the waste cement paste, separate the sand and stone through effective screening, and age the matrix gelling components for future use; The water content of the waste cement slurry is 30-40%, the content of free calcium oxide is ≤2.5%, the content of sulfur trioxide is ≤3%, and the sand content is ≤10%; the Blaine specific surface area is 300-400m 2 / Kg;

[0048] b. Select the wet-discharged fly ash, measure the actual moisture content and carbon content of the wet-discharged fly ash, and age it for later use; the moisture content of the wet-discharged fly ash is 25-35%, and the content of free calcium oxide is ≤2.5%. Sulfur trioxide content ≤ 3%, carbon content ≤ 12%; Blaine specific surface area is 350-400m 2 / Kg;

[0049] 2) Modifier preparat...

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Abstract

The present invention relates to one kind of high activity mixture slurry with several mineral components and its preparation process. The high activity mixture slurry is prepared with waste cement slurry as cementing component 40-60 weight portions, wet fly ash accounting in solid 40-60 weight portions, modifier 1-5 weight portions and water 80-100 weight portions, and through wet grinding. The modifier consists of reinforcing agent 10-30 wt%, surface modifier 20-40 wt% and activator 30-50 wt%. The present invention has two kinds of waste utilized and possesses the features of simple production process, low cost, high activity, capacity of compounding high quality concrete, etc.

Description

technical field [0001] The invention belongs to building materials, and in particular relates to a high-activity multi-mineral component admixture slurry and a preparation method thereof. Background technique [0002] With the development of my country's society, the speed of urban transformation and the development of the construction industry is accelerating, and the amount of waste discharge is gradually increasing, especially industrial waste with high moisture content and low activity is difficult to recycle, such as waste cement paste, wet discharge powder Soot etc. Waste cement paste is mainly the waste generated when cleaning concrete mixing and transportation equipment. According to statistics, the annual concrete consumption in my country is about 2 billion m 3 , the discharge of waste cement slurry is about 50 million tons; the dust collection process of fly ash mainly includes dry discharge and wet discharge. In order to facilitate storage and transportation, mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16C04B18/08
CPCY02W30/91
Inventor 马保国张美香张武权罗忠涛鄢佳佳
Owner WUHAN UNIV OF TECH
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