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Acid lithium slag-Portland cement-silica fume composite cementitious 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: 2022-07-29
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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  • Acid lithium slag-Portland cement-silica fume composite cementitious material and preparation method thereof
  • Acid lithium slag-Portland cement-silica fume composite cementitious material and preparation method thereof
  • Acid lithium slag-Portland cement-silica fume composite cementitious material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] It includes 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 fusible foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component in the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0047] Step 1 specifically includes:

[0048] (1) get 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, mix well to obtain slurry;

[0049] (2) uniformly mixing the slurry and the fusible foaming particles to obtain a mixed product;

[0050] (3) preheating the mixed product once to make it initially coagulate to obtain an initial coagulation product;

[0051] (4) crushing the initial coagulation product into granules t...

Embodiment 2

[0059] It includes 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 fusible foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component in the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0061] Step 1 specifically includes:

[0062] (1) get 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, mix well to obtain slurry;

[0063] (2) uniformly mixing the slurry and the fusible foaming particles to obtain a mixed product;

[0064] (3) preheating the mixed product once to make it initially coagulate to obtain an initial coagulation product;

[0065] (4) crushing the initial coagulation product into gran...

Embodiment 3

[0073] It includes 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 fusible foaming particles, and mix them evenly. Parts by weight only represent the weight ratio of each component in the lightweight filler, which is fired after granulation to obtain the lightweight filler;

[0075] Step 1 specifically includes:

[0076] (1) get 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, mix well to obtain slurry;

[0077] (2) uniformly mixing the slurry and the fusible foaming particles to obtain a mixed product;

[0078] (3) preheating the mixed product once to make it initially coagulate to obtain an initial coagulation product;

[0079] (4) crushing the initial coagulation product into granul...

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Abstract

The invention discloses an acidic lithium slag-Portland cement-silica fume composite cementitious material, comprising: Portland cement, acidic lithium slag, silica fume, graphene material, iron tailings, and light filler; the invention also discloses A preparation method thereof is disclosed, which comprises the following steps: taking fly ash, 15-25 parts by weight of sludge, oyster shell powder, clay, water and fusible foaming particles, mixing uniformly, granulating and firing to obtain light fillers. The Portland cement and the silica fume are mixed and ground to obtain a first grinding product; the acidic lithium slag, the graphene material and the iron tailings are respectively ground. Mixing the first pulverized product, acid lithium slag powder, graphene powder and iron tailings to obtain a second pulverized product; evenly mixing the second pulverized product and light filler to obtain a finished product of cementitious material . Compared with the prior art, the present invention does not use a foaming agent, and uses a lightweight filler to control the density of the material, so that the density of the material can be precisely controlled, thereby improving the quality of the finished product.

Description

technical field [0001] The invention relates to a cementitious material, in particular to an acidic lithium slag-Portland cement-silica fume composite cementitious material and a preparation method thereof. Background technique [0002] Cement is a powdery hydraulic inorganic cementitious material, which can be hardened in the air or better hardened in water after being stirred with water, and can firmly bond 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 the ground similar to modern cement. Later the ancient Romans used a mixture of lime and pozzolan in construction, which is similar to modern lime pozzolan cement. The concrete made of it cemented with 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 cementitious material, has been widely used in civil engineeri...

Claims

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Application Information

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Patent Type & Authority Patents(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