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An environment-friendly energy-saving building material

A kind of building material and environment-friendly technology, applied in the direction of cement production, etc., can solve the problems that the construction unit is unwilling to use, the early strength of fly ash cement is not high, and achieve the effect of improving the reactivity

Active Publication Date: 2019-06-21
苏州远略知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the chemical composition of fly ash is similar to that of cement, the activity of fly ash is potential, resulting in low early strength of fly ash cement, and the construction unit is reluctant to use it; the decarbonization process is to improve the strength of fly ash-based cement It is an important process, so how to activate the fly ash is the key to determine whether the fly ash can be used efficiently

Method used

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  • An environment-friendly energy-saving building material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Mechanical grinding and screening: ball mill the tertiary fly ash, and then sieve until the particle size is below 200 mesh;

[0023] 2) Decarbonization: calcining the pulverized and screened third-grade fly ash at 820°C for 2 hours, and then cooling to room temperature to obtain decarbonized fly ash;

[0024] 3) Mix 100 kg of fly ash after carbon removal with 8 kg of composite synergistic activator in a mixer to obtain a mixture; the composite synergistic activator is composed of gypsum, CaO, NaOH, NaOH, 2 S0 4 , Alum composition (by weight ratio, gypsum: CaO: NaOH: Na 2 S0 4 :alum=3:2:1:4:3);

[0025] 4) Add 135kg of water to the 108kg mixture and stir evenly to obtain a slurry;

[0026] 5) The slurry is poured into a mold, then steamed in a water bath at 60°C for 12 hours, and demoulded after steaming;

[0027] 6) After steaming in a water bath, put it in water for 3 days to obtain an environmentally friendly and energy-saving building material, and measure i...

Embodiment 2

[0029] 1) Mechanical grinding and screening: ball mill the tertiary fly ash, and then sieve until the particle size is below 200 mesh;

[0030] 2) Decarbonization: calcining the pulverized and screened third-grade fly ash at 820°C for 2 hours, and then cooling to room temperature to obtain decarbonized fly ash;

[0031] 3) Mix 100 kg of fly ash after carbon removal with 6 kg of composite synergistic activator in a mixer to obtain a mixture; the composite synergistic activator is composed of gypsum, CaO, NaOH, NaOH, 2 S0 4 , Alum composition (by weight ratio, gypsum: CaO: NaOH: Na 2 S0 4 :alum=3:2:1:4:3);

[0032] 4) Add 135kg of water to the 108kg mixture and stir evenly to obtain a slurry;

[0033] 5) The slurry is poured into a mold, then steamed in a water bath at 60°C for 12 hours, and demoulded after steaming;

[0034] 6) After steaming in a water bath, put it in water for 3 days to obtain an environmentally friendly and energy-saving building material, and measure i...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to an activating method for environment-friendly energy-saving building material flyash. A composite synergetic activator composed of gypsum, CaO, NaOH, Na2SO4 and alums is used for activating flyash, the triune efficient composite synergetic activation technology combining chemical activation, mechanical grinding and hydrothermal activation is used for activating flyash, the building material is excellent in compressive strength and rupture strength, the application range of flyash is enlarged, and the application ratio of flyash is increased.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly energy-saving building material. Background technique [0002] According to the "Ninth Five-Year Plan" of my country's national economic and social development and the "Outline of Long-term Objectives in 2010", the requirements for adjusting the structure of the building materials industry. Fly ash is a by-product of coal-fired thermal power generation. Raw coal is ground into coal powder (through 75urn mesh), and the coal powder and preheated air are sprayed into the furnace for suspension combustion. During the combustion of pulverized coal, the inorganic components in the coal will undergo a series of complex physical and chemical changes under the high temperature (1300 ° C ~ 1500 ° C) thermodynamic conditions in the boiler, and the high temperature flue gas generated will be collected by the dust collector Fly ash (or fly ash)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B22/14
CPCC04B7/26C04B40/0039C04B22/143C04B22/064C04B22/062C04B22/147C04B22/142Y02P40/10
Inventor 顾黎明张宇
Owner 苏州远略知识产权运营有限公司