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A high-performance lightweight aggregate for structural engineering

A structural engineering, high-performance technology, applied in the field of building materials, can solve the problems of few types, low strength, high water absorption, and achieve the effect of improving various properties

Active Publication Date: 2021-08-06
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few types of high-strength lightweight aggregate products in my country, high water absorption (>5%), and generally low strength (cylinder compressive strength <10MPa), which seriously restrict the development and application of high-strength lightweight aggregate concrete.

Method used

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  • A high-performance lightweight aggregate for structural engineering

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] The main process of producing high-performance light bones on the binocular rotary kiln ceramics production line is:

[0026] 1) The mixture is mixed with a mandatory stirring mixer, and the raw powder passes through the belt conveyor into the ball disk, and the light bone material ball, agonized, and after drying after 8 ~ 12mm;

[0027] 2) Light bone material balls from the kiln tail feeding into the rotary kiln system, preheating the kiln (rear section of the double barrel rotary kiln) Rotary 1.2R / min, calcined kiln (front section of the double barrel rotary kiln) turn 1.8R / min, life The residence time in the kiln in the kiln is about 30 to 60 min, and the temperature of the kiln head is controlled at 1250 to 1380 ° C;

[0028] 3) After the roasting clinker is removed by the kiln head, the discharge temperature is 950 to 1100 ° C, forced air cooling to 100 ° C, and is sent to the yard by the conveyor;

[0029] Among them, the raw material and ingredients of the raw p...

example 2

[0031] The specific implementation process of the process process is in Example 1, in which the raw material and ingredients of the raw powder and the ingredients are 45 copies, 1 kaolin, 5 partsilish ash, 29 parts of the dolomite; every 100 Base) Add: 1 part of calcium carbonate, 5 copies of pulverized coal, 2 parts TiO2.

example 3

[0033] The specific implementation process of the process process is in Example 1, in which the raw material and ingredients of the raw powder and the ingredients are: 1,4 of aluminum soil, 54 high-carbon chrome-free metal; Base) Add: 1 coal, 5 pieces of iron powder, 5 parts of TiO2, 2 parts ZrO2, 0.5 parts boron oxide.

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PUM

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Abstract

The invention discloses a high-performance lightweight aggregate design idea and method with the main goal of regulating the mineral composition. To achieve the purpose of greatly improving the relative performance of lightweight aggregate. The content of the present invention is: use silicon-aluminum raw materials and magnesium raw materials, and add suitable crystal nucleating agents, swelling agents and fluxing agents, mix the materials, obtain raw meal balls after balling, and obtain cordierite-based pellets after firing. High performance lightweight aggregate with main crystal phase. The implementation of the invention can provide a simple, easy and operable solution for the preparation of high-performance lightweight aggregate.

Description

Technical field [0001] The present invention relates to a high-performance light bone material belonging to the field of building materials. Background technique [0002] At present, high-strength light aggregate concrete (LC40) formulation technology has become mature, highly high, high durability and overall cost reduction, so that it has a very significant comparative advantage in the field of structural engineering, especially in high-level and super High-rise buildings, as well as the superiority of large span bridges. Therefore, the application of light bone material concrete in structural engineering has gradually matured, and it will have a very broad prospect in the future. [0003] Structural engineering light bones are generally high-strength poster, sintered ceramics and vaporized ceramics. But unfortunately, the design theory of the above three high-strength and light aggregates still uses ordinary ceramsite ideas, that is, the main raw materials are mainly based on ...

Claims

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Application Information

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IPC IPC(8): C04B18/02C04B35/195C04B35/64
CPCC04B18/023C04B18/027C04B35/195C04B35/64C04B2235/3206C04B2235/3208C04B2235/321C04B2235/3232C04B2235/3244C04B2235/3409C04B2235/405C04B14/02
Inventor 张礼华刘来宝唐凯靖杨家雨
Owner SOUTHWEAT UNIV OF SCI & TECH
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