Acidic lithium slag-Portland cement-silica fume composite cementing material and preparation method thereof

A composite cementitious material and Portland cement technology, applied in the field of cementitious materials, can solve problems such as the inability to guarantee cement density and collapse, and achieve the effects of improving the flexural resistance, improving the quality of finished products, and accurately controlling the density

Active Publication Date: 2020-03-13
HUNAN LVSHENG TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Lightweight cement also appeared in the prior art, which uses a foaming agent to generate pores inside the cement to reduce the density of the cement and improve its physical properties. However, due to the foam loss of the foaming agent, it collapses severely during the solidification process. , the cement density cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Including the following steps:

[0046] Step 1: Take 12 parts by weight of fly ash, 15 parts by weight of sludge, 2 parts by weight of oyster shell powder, 5 parts by weight of clay, 30 parts by weight of water and 10 parts by weight of easy-to-melt foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component inside the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0047] Step one specifically includes:

[0048] (1) Take 12 parts by weight of fly ash, 15 parts by weight of sludge, 2 parts by weight of oyster shell powder, 5 parts by weight of clay and 30 parts by weight of water, and mix them uniformly to obtain a slurry;

[0049] (2) Uniformly mixing the slurry and the easily meltable foamed particles to obtain a mixed product;

[0050] (3) Preheating the mixed product once to make it initial set to obtain the initial set product;

[0051] (4) Crushing the initial setting product i...

Embodiment 2

[0059] Including the following steps:

[0060] Step 1: Take 35 parts by weight of fly ash, 25 parts by weight of sludge, 10 parts by weight of oyster shell powder, 20 parts by weight of clay, 50 parts by weight of water and 20 parts by weight of easy-to-melt foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component inside the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0061] Step one specifically includes:

[0062] (1) Take 35 parts by weight of fly ash, 25 parts by weight of sludge, 10 parts by weight of oyster shell powder, 20 parts by weight of clay and 50 parts by weight of water, and mix them uniformly to obtain a slurry;

[0063] (2) Uniformly mixing the slurry and the easily meltable foamed particles to obtain a mixed product;

[0064] (3) Preheating the mixed product once to make it initial set to obtain the initial set product;

[0065] (4) Crushing the initial setting pro...

Embodiment 3

[0073] Including the following steps:

[0074] Step 1: Take 20 parts by weight of fly ash, 20 parts by weight of sludge, 8 parts by weight of oyster shell powder, 10 parts by weight of clay, 40 parts by weight of water and 15 parts by weight of easy-to-melt foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component inside the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0075] Step one specifically includes:

[0076] (1) Take 20 parts by weight of fly ash, 20 parts by weight of sludge, 8 parts by weight of oyster shell powder, 10 parts by weight of clay and 40 parts by weight of water, and mix them uniformly to obtain a slurry;

[0077] (2) Uniformly mixing the slurry and the easily meltable foamed particles to obtain a mixed product;

[0078] (3) Preheating the mixed product once to make it initial set to obtain the initial set product;

[0079] (4) Crushing the initial setting produ...

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PUM

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Abstract

The invention discloses an acidic lithium slag-Portland cement-silica fume composite cementing material. The composite cementing material comprises Portland cement, acidic lithium slag, silica fume, agraphene material, iron tailings and a light filler. The invention further discloses a preparation method of the composite cementing material. The preparation method comprises the following steps: taking and uniformly mixing fly ash, 15-25 parts by weight of sludge, oyster shell powder, clay, water and fusible foaming particles, granulating the obtained mixture, and firing the granulated mixtureto obtain the light filler; mixing the Portland cement with silica fume, and grinding the obtained mixture to obtain a first ground product; respectively grinding the acidic lithium slag, the graphenematerial and the iron tailings; mixing the first ground product, the acidic lithium slag powder, the graphene powder and the iron tailing powder to obtain a second ground product; and uniformly mixing the second ground product with the light filler to obtain the finished cementing material product. A foaming agent is not used, the density of the material is controlled by utilizing the light filler, and the material density can be accurately controlled, so that the quality of the finished product is improved.

Description

technical field [0001] The invention relates to a gelling material, in particular to an acid lithium slag-Portland cement-silica fume composite gelling material and a preparation method thereof. Background technique [0002] Cement (cement) is a powdery hydraulic inorganic gelling material. It can be mixed with water to form a slurry. It can be hardened in air or better hardened in water, and can firmly bind sand, stone and other materials together. The history of cement can be traced back to the Dadiwan people in Qin'an, China 5,000 years ago, who laid a floor similar to modern cement. A mixture of lime and volcanic ash, which was later used by the ancient Romans in construction, is very similar to modern lime pozzolanic cement. The concrete made of cemented crushed stone not only has high strength after hardening, but also can resist the erosion of fresh water or salt water. For a long time, cement, as an important cementing material, has been widely used in civil engine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08C04B38/10C04B18/02C04B111/40
CPCC04B28/04C04B38/08C04B18/027C04B38/10C04B2201/20C04B2111/40C04B18/146C04B18/144C04B14/024C04B18/12C04B18/08C04B18/0418C04B14/28C04B14/10C04B16/08C04B16/04
Inventor 张建军何祥华张舜洋
Owner HUNAN LVSHENG TECH DEV CO LTD
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