CN101787734A - Sea sand concrete member of admixtures and method for preparing same - Google Patents
Sea sand concrete member of admixtures and method for preparing same Download PDFInfo
- Publication number
- CN101787734A CN101787734A CN201010116341A CN201010116341A CN101787734A CN 101787734 A CN101787734 A CN 101787734A CN 201010116341 A CN201010116341 A CN 201010116341A CN 201010116341 A CN201010116341 A CN 201010116341A CN 101787734 A CN101787734 A CN 101787734A
- Authority
- CN
- China
- Prior art keywords
- sand concrete
- admixture
- carbon dioxide
- concrete
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004576 sand Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 57
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004568 cement Substances 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims description 23
- 238000002360 preparation method Methods 0.000 claims description 13
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 11
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 11
- 229920001228 polyisocyanate Polymers 0.000 claims description 8
- 239000005056 polyisocyanate Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 24
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 12
- 239000012615 aggregate Substances 0.000 abstract description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 abstract description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract 3
- 239000011083 cement mortar Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000011575 calcium Substances 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Abstract
The invention relates to a sea sand concrete member of admixtures. The sea sand concrete member comprises sea sand used as concrete aggregates, cement, water and an admixture capable of releasing carbon dioxide, wherein the sea sand, the cement, the water and the admixture capable of releasing carbon dioxide are mixed in a ratio to form the sea sand concrete; the sea sand concrete member also comprises a cylindrical substrate capable of accommodating the sea sand concrete; and the sea sand concrete is poured in the cylindrical substrate for shaping so as to form the cylindrical substrate member. In the sea sand concrete member, the sea sand, the cement, the water and the admixture capable of releasing carbon dioxide are mixed in a ratio to form the sea sand concrete, calcium hydroxide in the sea sand concrete is reacted with carbon dioxide gas to form calcium carbonate, and because the calcium carbonate in the concrete can increase the contact interface of the sea sand and the cement mortar, the strength of the sea sand concrete is enhanced, the pores of the sea sand concrete are reduced, and the quality of the sea sand concrete member is improved.
Description
Technical field
The present invention relates to a kind of concrete component and preparation method, relate in particular to a kind of sea-sand concrete member and preparation method of Admixture.
Background technology
Along with the development of society, all kinds of buildings and construction work are more and more, and concrete component is widely used in the post and foundation pile of tower structure, industrial premises and civilian construction.In coastal cities, common sandstone comparatively lacks, but has a large amount of extra large sand.Owing to contain a large amount of salinities in the extra large sand, corrosion failure steel easily, simultaneously, extra large sand is as basic matterial, and the chlorion of himself inside can reduce concrete intensity, and therefore, extra large sand is not being popularized in the building now.In the prior art, as building concrete, when utilizing extra large sand as concrete aggregate, its boundary strength will be lower than the boundary strength of natural aggregate, thereby causes the intensity of marine sand concrete to be lower than ordinary concrete intensity with extra large sand.Simultaneously, extra large sand is during as aggregate, and its interface hole will be more than the interface hole of natural aggregate, and this can make the durability of marine sand concrete will be lower than the durability of ordinary concrete.
Summary of the invention
The technical problem that the present invention solves is: concrete component of the present invention and preparation method overcome in the prior art technical problem that the intensity of sea-sand concrete member is not high.
Technical scheme of the present invention is: the sea-sand concrete member that makes up a kind of Admixture, the Admixture that comprises extra large sand, cement, water and energy release of carbon dioxide as concrete aggregate, the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete that forms in proportion, also comprise the columnar shape basal of holding described marine sand concrete, described marine sand concrete is poured into the back that is shaped in the described columnar shape basal form sea-sand concrete member.
Further technical scheme of the present invention is: described columnar shape basal is fibre-reinforced plastics (Fiberglass-Reinforced Plastics, fibre-reinforced plastics are called for short " FRP ") pipe.
Further technical scheme of the present invention is: described Admixture is the aluminosilicate that has absorbed carbon dioxide.
Further technical scheme of the present invention is: described Admixture is a polyisocyanate salt.
Further technical scheme of the present invention is: extra large sand, cement, water and Admixture that can release of carbon dioxide are stirred when mixed in proportion, and its air pressure that stirs mixed environment is higher than atmospheric pressure.
Technical scheme of the present invention is: a kind of method for preparing concrete component is provided, comprises the steps:
Preparation marine sand concrete: the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete that forms in proportion;
Form concrete component: described marine sand concrete is poured into the back that is shaped in the described columnar shape basal form sea-sand concrete member.
Further technical scheme of the present invention is: in preparation marine sand concrete step, its air pressure that stirs mixed environment is higher than atmospheric pressure.
Further technical scheme of the present invention is: in preparation marine sand concrete step, when described Admixture is aluminosilicate, earlier with aluminosilicate absorption carbon dioxide.
Technique effect of the present invention is: sea-sand concrete member of the present invention, the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete that forms in proportion, calcium hydroxide in the marine sand concrete and carbon dioxide react generation calcium carbonate, because calcium carbonate can improve the contact interface of extra large sand and cement paste in concrete, strengthen the intensity of marine sand concrete, reduce the hole of marine sand concrete, improved the quality of sea-sand concrete member.
Description of drawings
Fig. 1 is a section of structure of the present invention.
Fig. 2 is a flow chart of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1, the specific embodiment of the present invention is: the sea-sand concrete member that makes up a kind of Admixture, the Admixture that comprises extra large sand, cement, water and energy release of carbon dioxide as concrete aggregate, the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete 2 that forms in proportion, also comprise the columnar shape basal 1 of holding described marine sand concrete 2, described marine sand concrete 2 is poured into the back that is shaped in the described columnar shape basal 1 form sea-sand concrete member.Among the present invention, (chemical formula is Ca (OH) owing to contain a large amount of calcium hydroxides in the marine sand concrete 2
2), after being shaped, described marine sand concrete 2 is placed on normal mixing under the normal pressure in described columnar shape basal 1, and the adsorbent of carbon dioxide discharges carbon dioxide, and calcium hydroxide in the marine sand concrete 2 and carbon dioxide react generation calcium carbonate, that is: Ca (OH)
2+ CO
2=CaCO
3+ H
2O, because calcium carbonate is mixed in the contact interface that can improve extra large sand and cement paste in the concrete 2, strengthen the intensity of marine sand concrete 2, reduce the hole of marine sand concrete 2, thereby improve the durability of marine sand concrete 2, improved the performance and the quality of sea-sand concrete member so greatly.
Specific implementation process of the present invention is: at first, for the go ahead of the rest Admixture of absorbing carbon dioxide of needs, allow its absorbing carbon dioxide earlier, after waiting to have adsorbed carbon dioxide, Admixture and concrete aggregate, cement, the water that will adsorb carbon dioxide again stir mixed.When described Admixture was aluminosilicate, elder generation was with the adsorbents adsorb carbon dioxide of carbon dioxide.Because the quantity of Admixture absorbing carbon dioxide can increase with the increase of pressure usually, therefore, usually aluminosilicate is adsorbed being higher than under the condition of normal pressure, can adsorb more carbon dioxide.The aluminosilicate that has adsorbed the carbon dioxide of carbon dioxide fully stirs with extra large sand, cement, water and mixes, and waits to stir mixed good back formation marine sand concrete 2, marine sand concrete 2 is poured into the back that is shaped in the described columnar shape basal 1 form sea-sand concrete member.For the Admixture that in stirring, generates carbon dioxide, directly stir this class Admixture and concrete aggregate, cement, water mixed with the water reaction.When described Admixture is polyisocyanate salt, fully stir polyisocyanate salt mixed with concrete aggregate, cement, water, wait to stir mixed good back and form marine sand concrete, marine sand concrete is poured into the back that is shaped in the described columnar shape basal 1 form sea-sand concrete member, polyisocyanate salt and water reaction generate carbon dioxide, that is: RNCO+H
2O=RNH
2+ CO
2Because (chemical formula is Ca (OH) to contain a large amount of calcium hydroxide in the marine sand concrete 2
2), after being shaped, described marine sand concrete 2 is placed on normal mixing under the normal pressure in described columnar shape basal 1, and the adsorbent of carbon dioxide discharges carbon dioxide, and calcium hydroxide in the marine sand concrete 2 and carbon dioxide react generation calcium carbonate, that is: Ca (OH)
2+ CO
2=CaCO
3+ H
2O because calcium carbonate is mixed in the contact interface that can improve discarded extra large sand and cement paste in the marine sand concrete 2, strengthens the intensity of marine sand concrete 2, reduces the hole of marine sand concrete 2, has improved the quality of sea-sand concrete member.In the specific embodiment of the invention, described columnar shape basal is a FRP pipe, and with extra large sand, cement, water and adsorbed Admixture and stir in proportion when mixed, its air pressure that stirs mixed environment is higher than atmospheric pressure.
As shown in Figure 2, the specific embodiment of the present invention is: a kind of method for preparing the sea-sand concrete member of Admixture is provided, comprises the steps:
Step 100: preparation marine sand concrete: among the present invention, extra large sand, cement, water and Admixture that can release of carbon dioxide are stirred the mixed marine sand concrete that forms in proportion.At first, for the go ahead of the rest Admixture of absorbing carbon dioxide of needs, allow its absorbing carbon dioxide earlier, after waiting to have adsorbed carbon dioxide, Admixture and extra large sand, cement, the water that will adsorb carbon dioxide again stir mixed.When described Admixture was aluminosilicate, earlier with the adsorbents adsorb carbon dioxide of carbon dioxide, the aluminosilicate that has adsorbed the carbon dioxide of carbon dioxide fully stirred with extra large sand, cement, water and mixes, and waited to stir mixed good back formation marine sand concrete.For the Admixture that in stirring, generates carbon dioxide, directly stir this class Admixture and extra large sand, cement, water mixed with the water reaction.When described Admixture is polyisocyanate salt, polyisocyanate salt is fully stirred mixed with extra large sand, cement, water, wait to stir mixed good back and form marine sand concrete.
Step 200: form sea-sand concrete member: marine sand concrete is poured into the back that is shaped in the described columnar shape basal 1 form sea-sand concrete member.For the go ahead of the rest Admixture of absorbing carbon dioxide of needs, stir mixedly with having adsorbed the Admixture of carbon dioxide and extra large sand, cement, water, marine sand concrete 2 poured in the described columnar shape basal 1 be shaped.At normal temperatures and pressures, the carbon dioxide of Admixture release and the calcium hydroxide reaction in the marine sand concrete generate calcium carbonate, that is: Ca (OH)
2+ CO
2=CaCO
3+ H
2O.For the Admixture that generates carbon dioxide in stirring with the water reaction, Admixture and extra large sand, cement, water stir mixed, marine sand concrete are poured in the described columnar shape basal 1 be shaped.Polyisocyanate salt and water reaction generate carbon dioxide, and the calcium hydroxide reaction in carbon dioxide and the marine sand concrete generates calcium carbonate, that is: Ca (OH)
2+ CO
2=CaCO
3+ H
2O.
Among the present invention, carbon dioxide that Admixture discharges and the calcium hydroxide reaction in the marine sand concrete generate calcium carbonate, because calcium carbonate is mixed in the contact interface that can improve extra large sand and cement paste in the concrete 2, strengthen the intensity of marine sand concrete 2, reduce the hole of marine sand concrete 2, in the specific embodiment of the invention, described columnar shape basal is the FRP pipe, with concrete aggregate, cement, water and adsorbed Admixture and stir in proportion when mixed, its air pressure that stirs mixed environment is higher than atmospheric pressure.Among the present invention,, reduced the Carbon Dioxide in Air gas purging, improved environment by the Admixture absorbing carbon dioxide.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. the sea-sand concrete member of an Admixture, it is characterized in that, the Admixture that comprises extra large sand, cement, water and energy release of carbon dioxide as concrete aggregate, the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete that forms in proportion, also comprise the columnar shape basal of holding described marine sand concrete, described marine sand concrete is poured into the back that is shaped in the described columnar shape basal form sea-sand concrete member.
2. the sea-sand concrete member of Admixture according to claim 1 is characterized in that, described columnar shape basal is the fibre-reinforced plastics pipe.
3. the sea-sand concrete member of Admixture according to claim 1 is characterized in that, described Admixture is the aluminosilicate that has absorbed carbon dioxide.
4. the sea-sand concrete member of Admixture according to claim 1 is characterized in that, described Admixture is a polyisocyanate salt.
5. the sea-sand concrete member of Admixture according to claim 1 is characterized in that, extra large sand, cement, water and Admixture that can release of carbon dioxide are stirred when mixed in proportion, and its air pressure that stirs mixed environment is higher than atmospheric pressure.
6. a method for preparing the sea-sand concrete member of Admixture comprises the steps:
Preparation marine sand concrete: the Admixture of extra large sand, cement, water and energy release of carbon dioxide is stirred the mixed marine sand concrete that forms in proportion;
Form concrete component: described marine sand concrete is poured into the back that is shaped in the described columnar shape basal form sea-sand concrete member.
7. the method for the sea-sand concrete member of preparation Admixture according to claim 6 is characterized in that, in preparation marine sand concrete step, its air pressure that stirs mixed environment is higher than atmospheric pressure.
8. the method for the sea-sand concrete member of preparation Admixture according to claim 6 is characterized in that, in preparation marine sand concrete step, when described Admixture is aluminosilicate, earlier with aluminosilicate absorption carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101163417A CN101787734B (en) | 2010-02-26 | 2010-02-26 | Sea sand concrete member of admixtures and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101163417A CN101787734B (en) | 2010-02-26 | 2010-02-26 | Sea sand concrete member of admixtures and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787734A true CN101787734A (en) | 2010-07-28 |
| CN101787734B CN101787734B (en) | 2011-08-17 |
Family
ID=42531099
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101163417A Expired - Fee Related CN101787734B (en) | 2010-02-26 | 2010-02-26 | Sea sand concrete member of admixtures and method for preparing same |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306266A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Underground density increasing cementing saline soil column for super (strong) saline soil and construction method thereof |
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN108505686A (en) * | 2018-06-29 | 2018-09-07 | 大连理工大学 | A kind of fibre reinforced composites pipe ice coupled column |
| CN109368642A (en) * | 2018-11-27 | 2019-02-22 | 中国矿业大学 | A method of promoting fresh concrete absorbing carbon dioxide efficiency |
| CN111847999A (en) * | 2020-07-07 | 2020-10-30 | 深圳市奇信集团股份有限公司 | Reinforced mortar and preparation method thereof |
| CN113021617A (en) * | 2021-04-01 | 2021-06-25 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102628305A (en) * | 2012-04-28 | 2012-08-08 | 武汉大学 | Production process of novel concrete-filled steel tube composite structure |
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2010
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306266A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Underground density increasing cementing saline soil column for super (strong) saline soil and construction method thereof |
| CN103306266B (en) * | 2013-06-04 | 2015-12-09 | 北京航空航天大学 | A kind of underground density saline soil post for over-salted soil or strong salinized soil and construction method thereof |
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN108505686A (en) * | 2018-06-29 | 2018-09-07 | 大连理工大学 | A kind of fibre reinforced composites pipe ice coupled column |
| CN109368642A (en) * | 2018-11-27 | 2019-02-22 | 中国矿业大学 | A method of promoting fresh concrete absorbing carbon dioxide efficiency |
| CN111847999A (en) * | 2020-07-07 | 2020-10-30 | 深圳市奇信集团股份有限公司 | Reinforced mortar and preparation method thereof |
| CN113021617A (en) * | 2021-04-01 | 2021-06-25 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
| CN113021617B (en) * | 2021-04-01 | 2021-11-09 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
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| Publication number | Publication date |
|---|---|
| CN101787734B (en) | 2011-08-17 |
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