A kind of light unfired block and preparation method thereof

A block and lightweight technology, which is applied in the fields of light unburned block and its preparation, metakaolin-gypsum-based light unfired block and its preparation, and achieves the effects of low cost, certain earthquake resistance and convenient construction

Active Publication Date: 2021-11-30
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current mainstream of lightweight blocks is foamed concrete as the cementitious material, which is made by adding lightweight aggregates. There is no literature report on the use of metakaolin as the cementitious material to prepare lightweight blocks.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The metakaolin-industrial by-product gypsum-based lightweight non-burning block of the present embodiment and its preparation method are as follows:

[0020] (1) Raw material configuration: The main raw materials are prepared according to the following weight percentages.

[0021] Metakaolin 25%, phosphogypsum 8%, expanded perlite 64%, basalt fiber 3%.

[0022] (2) Molding and curing: Add the raw materials configured in step (1) into the mixer, add the water glass solution with a modulus of 1.2 and a solid content of 30% as the activator according to the water-cement ratio of 1:0.7, and stir and mix evenly Then pour the slurry into the formwork. Then send it to a constant temperature and humidity oven with a humidity of 90% and a temperature of 70°C for 3 hours of curing.

[0023] (3) Demolding and secondary curing: After the curing time reaches 3 hours, the block in step (2) is removed from the mold to obtain a formed metakaolin-industrial by-product gypsum-based lig...

Embodiment 2

[0026] The metakaolin-industrial by-product gypsum-based lightweight non-burning block of the present embodiment and its preparation method are as follows:

[0027] (1) Raw material configuration: The main raw materials are prepared according to the following weight percentages.

[0028] 20% metakaolin, 5% phosphogypsum, 70% ceramsite, 5% alkali-resistant glass fiber.

[0029] (2) Molding and curing: Add the raw materials configured in step (1) into the mixer, add the water glass solution with a modulus of 1.5 and a solid content of 25% as the activator according to the water-cement ratio of 1:0.7, and stir and mix evenly Then pour the slurry into the formwork. Then send it to a constant temperature and humidity oven with a humidity of 90% and a temperature of 60°C for 2 hours of curing.

[0030] (3) Demolding and secondary curing: After the curing time reaches 2 hours, the block in step (2) is removed from the mold to obtain a shaped metakaolin-industrial by-product gypsum-...

Embodiment 3

[0033] The metakaolin-industrial by-product gypsum-based lightweight non-burning block of the present embodiment and its preparation method are as follows:

[0034] (1) Raw material configuration: The main raw materials are prepared according to the following weight percentages.

[0035] 30% metakaolin, 10% phosphogypsum, 60% ceramsite.

[0036] (2) Molding and curing: Add the raw materials configured in step (1) into the mixer, add the water glass solution with a modulus of 1.5 and a solid content of 20% as the activator according to the water-cement ratio of 1:0.7, and stir and mix After uniformity, pour the slurry into the formwork. Then send it to a constant temperature and humidity oven with a humidity of 90% and a temperature of 60°C for 4 hours of curing.

[0037] (3) Demolding and secondary curing: After the curing time reaches 4 hours, the block in step (2) is removed from the mold to obtain a formed metakaolin-industrial by-product gypsum-based light-weight non-bur...

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Abstract

The invention relates to a light unfired building block, which comprises 20%-30% of metakaolin, 5%-10% of industrial by-product gypsum, 60%-70% of light aggregate and 0%-5% of fiber. Its preparation method includes the following steps (1) raw material configuration, (2) molding and curing (3) demoulding and secondary curing. The method of the present invention uses metakaolin and industrial by-product gypsum as raw materials to prepare a The new light-weight non-fired block has a simple preparation process. It is a new type of wall that is light, high-strength, heat-insulating, nailable, sawable, and planable. It has certain earthquake resistance, low cost, environmental protection and low carbon, and is convenient for construction. body material.

Description

technical field [0001] The invention relates to a light unfired block and a preparation method thereof, in particular to a metakaolin-gypsum-based light unfired block and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Lightweight block is a new type of lightweight, high-strength, and environmentally friendly wall material. It is used in the construction of non-load-bearing walls, which can effectively reduce the weight of the wall and improve the thermal insulation and sound insulation functions of the wall. At present, concrete lightweight blocks and gypsum-based lightweight blocks are widely used in public building shopping malls, schools, high-rise buildings, and long-span construction systems. [0003] But at present the mainstream of lightweight blocks is foamed concrete as the cementitious material, which is made by adding lightweight aggregates. There is no literature report on the use of metakaolin as the cem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/143C04B14/041C04B14/185C04B14/46C04B12/04C04B18/027C04B14/42
Inventor 廖仕雄吴磊全思臣赵志曼张毅李丹赵彬宇
Owner KUNMING UNIV OF SCI & TECH
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