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High-moisture filling material and preparation method thereof

A filling material, high water technology, applied in the field of preparation of cementitious materials, can solve the problems of high material strength requirements, high water filling materials can not be widely used, pan-alkali and other problems, to improve the later strength, reduce the strength level, high early stage and post-intensity effects

Active Publication Date: 2013-03-06
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that the raw material of component A of the existing high-water filling material is a single-component sulphoaluminate cement clinker, which leads to high requirements on the strength of the material, so that the high-water filling material cannot be widely used
[0010] Another technical problem to be solved by the present invention is the problem of a large amount of efflorescence on the surface of existing high-water filling materials after dehydration

Method used

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  • High-moisture filling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] High water filling materials, including component A and component B,

[0053] Among them, component A includes the following components:

[0054] Sulphoaluminate cement clinker 95wt% aluminate cement clinker 2.7wt%

[0055] Tartaric acid 0.8wt% Bentonite 0.8wt% Cellulose ether 0.7wt%;

[0056] The second component includes the following components:

[0057] Anhydrite 55wt% Lime 15wt% Compound additives 30wt%,

[0058] The compound additives include

[0059] Suspending agent bentonite 10wt%

[0060] Inorganic NaNO 2 11wt% NaF 2wt% Li 2 CO 3 3wt%

[0061] Polymetaphosphoric acid 2wt% organic compound triethanolamine 1.5wt% triisopropanolamine 0.5wt%.

[0062] The preparation method of high water filling material includes the following steps:

[0063] Grind aluminate cement clinker to a specific surface area of ​​400~500m 2 / kg powder, sulphoaluminate cement clinker, retarder and suspending agent are ground into a specific surface area of ​​600~700m 2 / kg powder, then mix and stir to m...

Embodiment 2

[0081] High water filling materials, including component A and component B,

[0082] Among them, component A includes the following components:

[0083] Sulphoaluminate cement clinker 52.4wt%, aluminate cement clinker 39wt%;

[0084] Tartaric acid 0.6wt% sepiolite 7wt% cellulose ether 1wt%;

[0085] The second component includes the following components:

[0086] Anhydrite 80wt% lime 10wt% compound additive 10wt%;

[0087] The compound additives include:

[0088] Suspending agent white carbon black 1.0wt% attapulgite 2.5wt% cellulose ether 0.5wt%;

[0089] Inorganic Ca(NO 3 ) 2 1.5wt% Na 2 CO 3 1.0wt% LiOH 2.0wt%(NH 4 ) 2 SO 4 1.5wt%;

[0090] The preparation method of high water filling material includes the following steps:

[0091] Grind aluminate cement clinker to a specific surface area of ​​400~500m 2 / kg powder, sulphoaluminate cement clinker, retarder and suspending agent are ground into a specific surface area of ​​600~700m 2 / kg powder, then mix and stir to make the first compon...

Embodiment 3

[0108] High water filling materials, including component A and component B,

[0109] Among them, component A includes the following components:

[0110] Sulphoaluminate cement clinker 91.7wt% Aluminate cement clinker 5wt%

[0111] Citric acid 0.3wt% Borax 1wt% White carbon black 2wt%;

[0112] The second component includes the following components:

[0113] Anhydrite 51wt%, lime 20wt%, compound additives 29wt%;

[0114] The compound additives include

[0115] Suspending agent bentonite 10wt%;

[0116] Inorganic NaNO 2 8wt% NaF 4wt% LiCl 1.5wt% Ca 2 NO 2 3wt% polymetaphosphoric acid 2wt%;

[0117] The organic compound triisopropanolamine 0.5wt%;

[0118] The preparation method of high water filling material includes the following steps:

[0119] Grind aluminate cement clinker to a specific surface area of ​​400~500m 2 / kg powder, sulphoaluminate cement clinker, retarder and suspending agent are ground into a specific surface area of ​​600~700m 2 / kg powder, then mix and stir to make the firs...

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Abstract

The invention discloses a high-moisture filling material and a preparation method thereof. The high-moisture filling material comprises a composition A and a composition B, wherein the composition A comprises 52.4 to 95 by weight percent of sulfo-aluminate cement clinkers, 2.7 to 39 by weight percent of aluminate cement clinkers, 0.3 to 2 by weight percent of setting retarder, and 1.5 to 8 by weight percent of suspending agent; the composition B comprises the following ingredients: 40 to 80 by weight percent of anhydrite, 10 to 30 by weight percent of lime, and 10 to 36 by weight percent of compound additives. The high-moisture filling material has the advantages of easily-available raw materials, low price, good stability, high long-term strength and no risk of surface efforescence.

Description

Technical field [0001] The invention relates to a preparation method of a cementitious material, in particular to a preparation method of a high-water and high-water filling material. The invention also relates to a preparation method and a use method of the high-water filling material. technical background [0002] High-water filling material is a new type of cementing material that was successfully researched in the late 1980s and early 1990s. It can replace steel and wood. It is mainly used for mine filling, underground grouting, road and foundation construction and other fields. The high water filling material contains two components: A and B. The first component is mainly made of high-strength sulphoaluminate cement or aluminate cement mixed with admixtures and ground, and the second component is mainly made of anhydrite It is made by adding water to the two components and adding water to form a single-component slurry. When the two slurries are mixed, they can quickly set a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36
CPCC04B28/065C04B40/0039
Inventor 李建杰丁全录佘海龙张宇秘洁芳史安然
Owner CCTEG CHINA COAL RES INST
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