CN105198266A - Anti-frost-crack concrete expansive agent and preparation method thereof - Google Patents
Anti-frost-crack concrete expansive agent and preparation method thereof Download PDFInfo
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- CN105198266A CN105198266A CN201510723644.8A CN201510723644A CN105198266A CN 105198266 A CN105198266 A CN 105198266A CN 201510723644 A CN201510723644 A CN 201510723644A CN 105198266 A CN105198266 A CN 105198266A
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Abstract
The invention discloses an anti-frost-crack concrete expansive agent and a preparation method thereof. The anti-frost-crack concrete expansive agent is mainly prepared from components in parts by weight as follows: 13-28 parts of quicklime, 11-24 parts of gypsum, 8-17 parts of fly ash, 8-21 parts of silicon dioxide, 12-23 parts of silicon carbide, 8-20 parts of polypropylene, 4-12 parts of polyacrylamide, 7-14 parts of aluminum sulfate, 3-9 parts of aluminum potassium sulfate, 2-7 parts of an activating agent, 5-12 parts of methanol and 20-35 parts of water. Compared with the prior art, the anti-frost-crack concrete expansive agent has the following advantages: (1), the prepared anti-frost-crack concrete expansive agent has good anti-frost-crack performance and is applicable to building materials in cold regions; (2), the prepared anti-frost-crack concrete expansive agent has high water resistance and is applicable to submerged structure filler.
Description
Technical field
The present invention relates to cement expansive material field, particularly relate to a kind of frost-cracking-preventing cement expansive material and preparation method thereof.
Background technology
Cement expansive material is a kind of new concrete admixture.By reacting to produce with the cement in concrete, water hydratable the crystallization that volume becomes large, thus causing volume of concrete to expand, producing certain prestress, to help control Shrinkage Cracking of Concrete.Swelling agent is mainly used in the structure position that underground works has waterproof requirement, for the pedestal grouting mud jacking of bridge, heavy equipment, or Hydraulic and Hydro-Power Engineering, nuclear power, petrochemical industry and other hydro-structure etc.In recent years, part producer, because of the factor such as price, customer demand, reduces rate of expansion, produces the enterprise's mark microdilatancy type product not meeting national standard and require.Even there is manufacturer production not have the product of rate of expansion completely, put on market and a whoop and a holler with the name of " water-resisting agent " or " impervious agent ".Part engineering staff even thinks " concrete will reach qualified seepage resistance demand, just must use water-resisting agent, impervious agent ".This saying has no foundation in fact, water-tight concrete should be more by concrete production enterprise by adjustment raw materials particles grating, select better starting material to prepare, and mix concrete waterproofer impervious agent and have no relation." water-resisting agent " " impervious agent " inherently has no the inferior product of technical basis, and the effect of swelling agent, one to being the crack problem brought for resisting concrete self-shrinkage.
Chinese patent CN2013104416295 concrete anticracking swelling agent, disclose a kind of anti-cracking cement expansive material, it has, and expansion energy is high, stable performance, alkali content is low, volume is low, low production cost, product performance are excellent and technical indicator meets the advantages such as national Specification.In addition, this swelling agent rate of expansion and hydrated reaction of cement speed basically identical, moderate at rate of expansion in each of concrete curing reaction in period, the long-term stable performance of concrete, effectively can prevent the appearance of concrete cracks, be the desirable admixture of preparation cracking resistance and water-tight concrete.
But above-mentioned prior art has the following disadvantages: first, the cold-check resistance of this swelling agent can not be good, is thus not used in cold district; In addition, the water resistance of this swelling agent is not good, inapplicable when thus constructing under water.
Summary of the invention
The technical problem that the present invention solves: good in order to obtain a kind of resistance to frost, and there is the swelling agent of good resistance to cleavage, the invention provides a kind of frost-cracking-preventing cement expansive material and preparation method thereof.
To achieve these goals, the present invention is by the following technical solutions:
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 13 ~ 28 parts, 11 ~ 24 parts, gypsum, 8 ~ 17 parts, flyash, silicon-dioxide 8 ~ 21 parts, 12 ~ 23 parts, silicon carbide, polypropylene 8 ~ 20 parts, polyacrylamide 4 ~ 12 parts, 7 ~ 14 parts, Tai-Ace S 150, potassium aluminium sulfate 3 ~ 9 parts, stimulator 2 ~ 7 parts, methyl alcohol 5 ~ 12 parts, 20 ~ 35 parts, water.
As a preferred embodiment of the present invention, described frost-cracking-preventing cement expansive material primarily of following component by weight mark proportioning make: unslaked lime 23 parts, 19 parts, gypsum, 14 parts, flyash, silica 18 parts, 17 parts, silicon carbide, polypropylene 14 parts, polyacrylamide 9 parts, 11 parts, Tai-Ace S 150, potassium aluminium sulfate 7 parts, stimulator 5 parts, methyl alcohol 8 parts, 31 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 2cm ~ 4cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 100 ~ 200 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 200 ~ 350 orders, then drops in pyroreaction still, high-temperature calcination 8 ~ 12 minutes under 560 DEG C ~ 780 DEG C conditions;
3rd step: by water and methyl alcohol by volume 1.5 ~ 3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 865 DEG C ~ 970 DEG C, melting under 2.9MPa ~ 4.7MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 4min ~ 8min;
5th step: dry the mixture that the 4th step obtains under 950 DEG C ~ 1000 DEG C conditions, adding grinding in ball grinder, to be crushed to particle diameter be 200 ~ 300 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
As a preferred technical solution of the present invention, be 3cm by unslaked lime and gypsum mechanical disintegration to particle diameter in the 1st step, then drop into together with flyash in ball mill, grind further, particle diameter is 150 orders.
As a preferred technical solution of the present invention, add in ball mill in the 2nd step by silicon-dioxide and silicon carbide, grinding to particle diameter is 300 orders, then drops in pyroreaction still, high-temperature calcination 9 minutes under 730 DEG C of conditions.
As a preferred technical solution of the present invention, in the 3rd step by water and methyl alcohol by volume 2.3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely.
As a preferred technical solution of the present invention, in 4th step by polypropylene and polyacrylamide as in autoclave, 915 DEG C, melting under 4.1MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 6min.
As a preferred technical solution of the present invention, in the 5th step, under 985 DEG C of conditions, dry the mixture that the 4th step obtains, adding grinding in ball grinder, to be crushed to particle diameter be 280 orders.
beneficial effect
Compared with prior art, the present invention has the following advantages:
(1) the frost-cracking-preventing cement expansive material that the present invention prepares has good cold-check resistance energy, is applicable to the material of construction of cold district;
(2) the frost-cracking-preventing cement expansive material water resistance for preparing of the present invention is strong, is applicable to submerged structure filler.
Embodiment
Embodiment 1
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 13 parts, 11 parts, gypsum, 8 parts, flyash, silicon-dioxide 8 parts, 12 parts, silicon carbide, polypropylene 8 parts, polyacrylamide 4 parts, 7 parts, Tai-Ace S 150, potassium aluminium sulfate 3 parts, stimulator 2 parts, methyl alcohol 5 parts, 20 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 2cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 100 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 200 orders, then drops in pyroreaction still, high-temperature calcination 8 minutes under 560 DEG C of conditions;
3rd step: by water and methyl alcohol by volume 1.5:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 865 DEG C, melting under 2.9MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 4min;
5th step: dry the mixture that the 4th step obtains under 950 DEG C of conditions, adding grinding in ball grinder, to be crushed to particle diameter be 200 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
Embodiment 2
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 23 parts, 19 parts, gypsum, 14 parts, flyash, silica 18 parts, 17 parts, silicon carbide, polypropylene 14 parts, polyacrylamide 9 parts, 11 parts, Tai-Ace S 150, potassium aluminium sulfate 7 parts, stimulator 5 parts, methyl alcohol 8 parts, 31 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 3cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 150 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 300 orders, then drops in pyroreaction still, high-temperature calcination 9 minutes under 730 DEG C of conditions;
3rd step: by water and methyl alcohol by volume 2.3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 915 DEG C, melting under 4.1MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 6min;
5th step: dry the mixture that the 4th step obtains under 985 DEG C of conditions, adding grinding in ball grinder, to be crushed to particle diameter be 280 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
Embodiment 3
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 28 parts, 24 parts, gypsum, 17 parts, flyash, silicon-dioxide 21 parts, 23 parts, silicon carbide, polypropylene 20 parts, polyacrylamide 12 parts, 14 parts, Tai-Ace S 150, potassium aluminium sulfate 9 parts, stimulator 7 parts, methyl alcohol 12 parts, 35 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 4cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 200 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 350 orders, then drops in pyroreaction still, high-temperature calcination 12 minutes under 780 DEG C of conditions;
3rd step: by water and methyl alcohol by volume 3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 970 DEG C, melting under 4.7MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 8min;
5th step: dry the mixture that the 4th step obtains under 1000 DEG C of conditions, adding grinding in ball grinder, to be crushed to particle diameter be 300 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
Reference examples 1
Be not add polypropylene with the difference of embodiment 2.
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 23 parts, 19 parts, gypsum, 14 parts, flyash, silica 18 parts, 17 parts, silicon carbide, polyacrylamide 9 parts, 11 parts, Tai-Ace S 150, potassium aluminium sulfate 7 parts, stimulator 5 parts, methyl alcohol 8 parts, 31 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 3cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 150 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 300 orders, then drops in pyroreaction still, high-temperature calcination 9 minutes under 730 DEG C of conditions;
3rd step: by water and methyl alcohol by volume 2.3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polyacrylamide as in autoclave, 915 DEG C, melting under 4.1MPa condition, drip the solution that the 3rd step obtains to complete melting wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 6min;
5th step: dry the mixture that the 4th step obtains under 985 DEG C of conditions, adding grinding in ball grinder, to be crushed to particle diameter be 280 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
Reference examples 2
Be not add Tai-Ace S 150 with the difference of embodiment 2.
A kind of frost-cracking-preventing cement expansive material, primarily of following component by weight mark proportioning make: unslaked lime 23 parts, 19 parts, gypsum, 14 parts, flyash, silica 18 parts, 17 parts, silicon carbide, polypropylene 14 parts, polyacrylamide 9 parts, potassium aluminium sulfate 7 parts, stimulator 5 parts, methyl alcohol 8 parts, 31 parts, water.
A preparation method for frost-cracking-preventing cement expansive material, comprises following steps:
1st step: be 3cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 150 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 300 orders, then drops in pyroreaction still, high-temperature calcination 9 minutes under 730 DEG C of conditions;
3rd step: by water and methyl alcohol by volume 2.3:0.9 mix, and add wherein by potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 915 DEG C, melting under 4.1MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 6min;
5th step: dry the mixture that the 4th step obtains under 985 DEG C of conditions, adding grinding in ball grinder, to be crushed to particle diameter be 280 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
Above-described embodiment and reference examples are detected in laboratory, result is as follows:
As seen from the table, the rate of expansion that polypropylene can improve cement expansive material is added; In addition, the tolerance to low temperature environment that Tai-Ace S 150 can improve cement expansive material is added.
Claims (8)
1. a frost-cracking-preventing cement expansive material, it is characterized in that, primarily of following component by weight mark proportioning make: unslaked lime 13 ~ 28 parts, 11 ~ 24 parts, gypsum, 8 ~ 17 parts, flyash, silicon-dioxide 8 ~ 21 parts, 12 ~ 23 parts, silicon carbide, polypropylene 8 ~ 20 parts, polyacrylamide 4 ~ 12 parts, 7 ~ 14 parts, Tai-Ace S 150, potassium aluminium sulfate 3 ~ 9 parts, stimulator 2 ~ 7 parts, methyl alcohol 5 ~ 12 parts, 20 ~ 35 parts, water.
2. a kind of frost-cracking-preventing cement expansive material according to claim 1, it is characterized in that, primarily of following component by weight mark proportioning make: unslaked lime 23 parts, 19 parts, gypsum, 14 parts, flyash, silica 18 parts, 17 parts, silicon carbide, polypropylene 14 parts, polyacrylamide 9 parts, 11 parts, Tai-Ace S 150, potassium aluminium sulfate 7 parts, stimulator 5 parts, methyl alcohol 8 parts, 31 parts, water.
3. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 1, is characterized in that, comprise following steps:
1st step: be 2cm ~ 4cm by unslaked lime and gypsum mechanical disintegration to particle diameter, then drop into together with flyash in ball mill, grind further, particle diameter is 100 ~ 200 orders;
2nd step: silicon-dioxide and silicon carbide are added in ball mill, grinding to particle diameter is 200 ~ 350 orders, then drops in pyroreaction still, high-temperature calcination 8 ~ 12 minutes under 560 DEG C ~ 780 DEG C conditions;
3rd step: by water and methyl alcohol by volume 1.5 ~ 3:0.9 mix, and add wherein by Tai-Ace S 150 and potassium aluminium sulfate, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely;
4th step: by polypropylene and polyacrylamide as in autoclave, 865 DEG C ~ 970 DEG C, melting under 2.9MPa ~ 4.7MPa condition, to complete melting, drip the solution that the 3rd step obtains wherein, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 4min ~ 8min;
5th step: dry the mixture that the 4th step obtains under 950 DEG C ~ 1000 DEG C conditions, adding grinding in ball grinder, to be crushed to particle diameter be 200 ~ 300 orders;
6th step: the powder that the 1st step, the 2nd step and the 5th step obtain is mixed and can obtain frost-cracking-preventing cement expansive material.
4. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 3, it is characterized in that, be 3cm by unslaked lime and gypsum mechanical disintegration to particle diameter in the 1st step, then drop in ball mill together with flyash, grind further, particle diameter is 150 orders.
5. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 3, it is characterized in that, in the 2nd step, silicon-dioxide and silicon carbide are added in ball mill, grind to particle diameter be 300 orders, drop in pyroreaction still again, high-temperature calcination 9 minutes under 730 DEG C of conditions.
6. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 3, is characterized in that, in the 3rd step by water and methyl alcohol by volume 2.3:0.9 mix, and Tai-Ace S 150 and potassium aluminium sulfate are added wherein, magnetic agitation, adds stimulator while stirring wherein, to dissolving completely.
7. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 3, it is characterized in that, in 4th step by polypropylene and polyacrylamide as in autoclave, 915 DEG C, melting under 4.1MPa condition, the solution that the 3rd step obtains is dripped wherein to complete melting, dropping limit, limit is stirred, and drips and terminates rear 350 DEG C of insulation 6min.
8. the preparation method of a kind of frost-cracking-preventing cement expansive material according to claim 3, is characterized in that, in the 5th step, under 985 DEG C of conditions, dry the mixture that the 4th step obtains, adding grinding in ball grinder, to be crushed to particle diameter be 280 orders.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107082588A (en) * | 2016-04-22 | 2017-08-22 | 秦皇岛博茂环境工程有限公司 | A kind of water absoption expanding agent, preparation method and applications |
| CN107746199A (en) * | 2017-11-09 | 2018-03-02 | 福清市永春混凝土外加剂有限公司 | A kind of cement expansive material and preparation method and application |
| US11390561B2 (en) | 2017-10-13 | 2022-07-19 | Gcp Applied Technologies Inc. | Controlled hydration of quicklime |
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| CN102219430A (en) * | 2011-04-08 | 2011-10-19 | 衡阳市山王建材实业有限责任公司 | High performance concrete inorganic environmental waterproof expanding agent and preparation method thereof |
| CN104692688A (en) * | 2015-02-05 | 2015-06-10 | 江苏苏博特新材料股份有限公司 | Modified calcium oxide expansion agent for cement concrete and preparation method of modified calcium oxide expansion agent |
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2015
- 2015-11-01 CN CN201510723644.8A patent/CN105198266A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219430A (en) * | 2011-04-08 | 2011-10-19 | 衡阳市山王建材实业有限责任公司 | High performance concrete inorganic environmental waterproof expanding agent and preparation method thereof |
| CN104692688A (en) * | 2015-02-05 | 2015-06-10 | 江苏苏博特新材料股份有限公司 | Modified calcium oxide expansion agent for cement concrete and preparation method of modified calcium oxide expansion agent |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082588A (en) * | 2016-04-22 | 2017-08-22 | 秦皇岛博茂环境工程有限公司 | A kind of water absoption expanding agent, preparation method and applications |
| CN107082588B (en) * | 2016-04-22 | 2020-03-06 | 秦皇岛博茂环境工程有限公司 | Water-absorbing swelling agent, preparation method and application thereof |
| US11390561B2 (en) | 2017-10-13 | 2022-07-19 | Gcp Applied Technologies Inc. | Controlled hydration of quicklime |
| CN107746199A (en) * | 2017-11-09 | 2018-03-02 | 福清市永春混凝土外加剂有限公司 | A kind of cement expansive material and preparation method and application |
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