Antifreezing cement and preparing method thereof

A cement and component technology, applied in the field of antifreeze cement and its preparation, can solve the problems of uneven mixing, inability to construct, and insignificant antifreeze effect, and achieve good long-term durability and good antifreeze effect.

Inactive Publication Date: 2013-02-06
关卉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The construction industry generally works outdoors, especially in winter, when the outdoor temperature is below zero, the cement will freeze, so construction will not be possible
At present, admixtures, such as early-strength agents and antifreeze agents, are usually used to prevent the mixture of cement and concrete from freezing at low temperatures. Early-strength agents and antifreeze agents generally can only make cement use at a minimum temperature of minus 10 degrees Celsius. The main components of strengthening agent and antifreeze are chlorine-containing salts, which will have adverse effects on cement performance, especially long-term durability.
At the same time, the cement antifreeze and early strength agent are only a few percent of the cement, and there are often uneven mixing, which makes the antifreeze effect not obvious. They can only be used in some areas, and cannot solve the problem of winter construction in all areas.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The present invention is made up of the following components by weight percentage: including 0.01% calcium metaaluminate, 0.05% glass fiber, 0.05% sodium carbonate, 0.1% sodium thiocyanate, 0.8% calcium silicate hydrate , 0.05% sodium chloride, 0.08% calcium chloride, 0.1% triethanolamine, 0.1% alum, 0.05% gypsum antifreeze component, and the balance is Portland cement clinker.

[0011] The preparation method of the antifreeze cement of the present invention includes raw material crushing and drying, batching, grinding, calcining, stirring, grinding, and filling the antifreeze component in the cement raw material for calcining, and adding the antifreeze component to the calcined clinker Add the antifreeze component, put it into the mixing device and stir it fully, and then grind it together to make the cement product.

Embodiment 2

[0013] The present invention is made up of the following components by weight percentage: including 0.3% calcium metaaluminate, 0.9% glass fiber, 0.65% sodium carbonate, 0.3% sodium thiocyanate, 1.0% calcium silicate hydrate , 0.65% sodium chloride, 0.95% calcium chloride, 0.9% triethanolamine, 2.0% alum, 1.5% gypsum antifreeze component, and the balance is Portland cement clinker.

[0014] The preparation method of the antifreeze cement of the present invention includes raw material crushing and drying, batching, grinding, calcining, stirring, grinding, and filling the antifreeze component in the cement raw material for calcining, and adding the antifreeze component to the calcined clinker Add the antifreeze component, put it into the mixing device and stir it fully, and then grind it together to make the cement product.

Embodiment 3

[0016] The present invention is made up of the following components by weight percentage: including 0.2% calcium metaaluminate, 0.5% glass fiber, 0.5% sodium carbonate, 0.2% sodium thiocyanate, 0.9% calcium silicate hydrate , 0.55% sodium chloride, 0.65% calcium chloride, 0.4% triethanolamine, 1.3% alum, 1% gypsum antifreeze component, and the balance is Portland cement clinker.

[0017] The preparation method of the antifreeze cement of the present invention includes raw material crushing and drying, batching, grinding, calcining, stirring, grinding, and filling the antifreeze component in the cement raw material for calcining, and adding the antifreeze component to the calcined clinker Add the antifreeze component, put it into the mixing device and stir it fully, and then grind it together to make the cement product.

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PUM

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Abstract

The invention discloses antifreezing cement which comprises the following component percentage by weight: 0.01-0.3% of calcium metaaluminate, 0.05-0.9% of glass fiber, 0.05-0.65% of sodium carbonate, 0.1-0.3% of sodium sulfocyanate, 0.8-1.0% of tobermorite, 0.05-0.65% of sodium chloride, 0.08-0.95% of calcium chloride, 0.1-0.9% of triethanolamine, 0.1-2.0% of alum, 0.05-1.5% of gypse antifreezing component and Portland cement clinker in balancing amount. The antifreezing cement disclosed by the invention has a good antifreezing good and favorable long-term durability.

Description

technical field [0001] The invention relates to an antifreeze cement and a preparation method thereof. Background technique [0002] The construction industry generally works outdoors, especially in winter, when the outdoor temperature is below zero, the cement will freeze, so construction will not be possible. At present, admixtures, such as early-strength agents and antifreeze agents, are usually used to prevent the mixture of cement and concrete from freezing at low temperatures. Early-strength agents and antifreeze agents generally can only make cement be used at minus 10 degrees Celsius, and early The main components of strengthening agent and antifreeze are chlorine-containing salts, which will have adverse effects on cement performance, especially long-term durability. At the same time, cement antifreeze and early strength agent are only a few percent of cement, and there are often uneven mixing, which makes the antifreeze effect not obvious. They can only be used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/14
Inventor 关卉
Owner 关卉
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