A kind of inorganic cementitious material with fly ash and waste glass as raw materials and preparation method thereof

An inorganic cementitious material and waste glass technology, applied in cement production and other directions, can solve the problems of potential safety hazards, low recycling of waste glass, occupation of land resources, etc., and achieve good resistance to sulfate corrosion, fuel consumption and greenhouse gas. The effect of low emission and high curing strength

Active Publication Date: 2018-10-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, the recycling of waste glass is very low, and it is often filled up with ordinary garbage, which not only occupies land resources, but also poses safety hazards. It is urgent to find ways to effectively use it

Method used

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  • A kind of inorganic cementitious material with fly ash and waste glass as raw materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The waste glass was washed, dried, crushed and passed through a 5 mm square hole sieve. Weigh 40 parts of fly ash, 40 parts of slaked lime and 20 parts of waste glass, mix and grind to get 0.92% of the 80μm sieve; mix and mix the batch with water to make a ball with a diameter of 8~12mm ; Steam the pellets at 90°C for 16 hours to obtain steamed nutrients; dry the steamed nutrients at 80°C, cool and grind until 2.5% of the 45μm sieve is obtained, and obtain superfine silicate powder;

[0021] Respectively weigh 50 parts of waste glass, 30 parts of granulated blast furnace slag, 20 parts of quartz sand, 4 parts of sodium hydroxide, and 1 part of water, mix and grind to 45 μm sieve residue 2.8%, to obtain superfine powder of modified waste glass;

[0022] Mix and grind 65 parts of silicate superfine powder and 35 parts of modified waste glass superfine powder for 30 minutes to prepare an inorganic gelling material.

[0023] It is measured that the initial setting time of ...

Embodiment 2

[0025] The waste glass was washed, dried, crushed and passed through a 5 mm square hole sieve. Weigh 65 parts of fly ash, 30 parts of slaked lime and 5 parts of waste glass, mix and grind to get 0.84% ​​of the 80μm sieve; mix and mix the batch with water to make a ball with a diameter of 8~12mm ; Steam the pellets at 95°C for 14 hours to obtain steamed nutrients; dry the steamed nutrients at 120°C, cool and grind to 4.3% of the 45μm sieve, and obtain superfine silicate powder;

[0026] Weigh 70 parts of waste glass, 15 parts of granulated blast furnace slag, 15 parts of quartz sand, 5 parts of sodium carbonate, and 1 part of water, mix and grind until the sieve residue of 45 μm is less than 1.6%, and obtain superfine powder of modified waste glass;

[0027] Mix and grind 75 parts of silicate superfine powder and 25 parts of modified waste glass superfine powder for 30 minutes to prepare inorganic gelling material.

[0028] The measured initial setting time of the inorganic ge...

Embodiment 3

[0030] The waste glass was washed, dried, crushed and passed through a 5 mm square hole sieve. Weigh 55 parts of fly ash, 35 parts of slaked lime and 10 parts of waste glass, mix and grind to get 0.70% of the 80μm sieve; mix the batch with water and stir evenly, and make a ball with a diameter of 8~12mm ; Steam the pellets at 98°C for 14 hours to obtain steamed nutrients; dry the steamed nutrients at 100°C, cool and grind to a 45 μm sieve with a residue of 3.1%, and obtain superfine silicate powder;

[0031] Weigh 60 parts of waste glass, 25 parts of granulated blast furnace slag, 15 parts of quartz sand, 3.5 parts of potassium hydroxide, and 1 part of water, mix and grind until the sieve residue of 45 μm is less than 2.4%, and obtain superfine powder of modified waste glass;

[0032] Mix and grind 70 parts of silicate superfine powder and 30 parts of modified waste glass superfine powder for 30 minutes to prepare inorganic gelling material.

[0033] The initial curing time o...

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Abstract

The invention provides an inorganic gelling material made from coal ash and waste glass and a preparation method of the inorganic gelling material. The inorganic gelling material comprises, by weight, 65-75 parts of silicate superfine powder and 25-35 parts of modified waste glass superfine powder. The preparation method includes mixing and grinding the coal ash, slaked lime and the waste glass, adding water, evenly stirring the mixture into a material ball, drying and cooling the material ball after hydrothermal treatment, and grinding the material ball into the silicate superfine powder; mixing and grinding the waste glass, granulated blast-furnace slag, silica sand, modifying agent and water to obtain the modified waste glass superfine powder; mixing the silicate superfine powder with the modified waste glass superfine powder, and grinding the mixture to obtain the inorganic gelling material. High-temperature calcination is not needed and heat consumption is low in the preparing process of the inorganic gelling material, utilization rates of the coal dust and the waste glass are high, curing time of the obtained material is proper, and the obtained material has high curing strength and high sulphate attack resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials and solid waste utilization, and in particular relates to an inorganic gelling material using fly ash and waste glass as raw materials and a preparation method thereof. Background technique [0002] Inorganic cementitious materials are widely used in various civil engineering, transportation and marine engineering fields, among which cement is the most widely used. General-purpose cement is a material with high resource and energy consumption in the production process and large greenhouse gas emissions. It is the material workers who have been working hard to find new raw material resources and alternative or supplementary new cementitious materials. solved problem. With the development of the electric power industry, the amount of fly ash discharged by thermal power generation enterprises is increasing day by day. At present, the annual discharge of fly ash in my country has exceeded ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B7/36
CPCC04B7/26C04B7/36Y02P40/10
Inventor 方永浩朱晨辉杜超龚泳帆刘飞顾冲时苏怀智
Owner HOHAI UNIV
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