CN103241984A - Pre-coagulating weighting agent for special concrete - Google Patents
Pre-coagulating weighting agent for special concrete Download PDFInfo
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- CN103241984A CN103241984A CN2013102001945A CN201310200194A CN103241984A CN 103241984 A CN103241984 A CN 103241984A CN 2013102001945 A CN2013102001945 A CN 2013102001945A CN 201310200194 A CN201310200194 A CN 201310200194A CN 103241984 A CN103241984 A CN 103241984A
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- weight ratio
- weighting agent
- special concrete
- early
- coagulates
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Abstract
The invention discloses a pre-coagulating weighting agent for special concrete. The pre-coagulating weighting agent for special concrete comprises the following components in percentage by weight: 20-40% of water reducer, 7-13% of calcium nitrite, 4-8% of calcium formate, 1.5-2.5% of sodium thiocyanate, 0.8-1.6% of sodium fluosilicate, 0.3-0.5% of sodium aluminate, 0.1-0.2% of hydroxyethyl cellulose, 0.1-0.3% of alkyl sodium sulfonate and 40-60% of additive. The pre-coagulating weighting agent for special concrete can realize the effects of pre-coagulating, early strengthening, tackifying, weighting, increasing density and antifreezing.
Description
Technical field
The present invention relates to early coagulate weighting agent, relate in particular to special concrete and early coagulate weighting agent.
Background technology
Special concrete is used widely in construction work, but has such problem in the use of special concrete: concrete time of coagulation is longer, and concrete unit weight is less, and concrete density is relatively poor, has influenced the use of special concrete.
Summary of the invention
In view of this, the objective of the invention is to overcome the deficiencies in the prior art, provide a kind of special concrete early to coagulate weighting agent.
For this reason, the invention provides a kind of special concrete and early coagulate weighting agent, described concrete early coagulates weighting agent and comprises: water reducer 20%-40%(weight ratio), calcium nitrite 7%-13%(weight ratio), calcium formiate 4%-8%(weight ratio), Sodium Thiocyanate 99 1.5%-2.5%(weight ratio), Sodium Silicofluoride 0.8%-1.6%(weight ratio), sodium aluminate 0.3%-0.5%(weight ratio), Natvosol 0.1%-0.2%(weight ratio), alkyl sodium sulfonate 0.1%-0.3%(weight ratio), additive 40%-60%(weight ratio).
Preferably, described additive is flyash.
Preferably, described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), flyash 50%(weight ratio).
Preferably, described additive is water.
Preferably, described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), water 50%(weight ratio).
Preferably, described special concrete early coagulates weighting agent before cement, iron powder, the special concrete sclerosis of barite, with cement minerals C
3A, C
4AF forms and can urge compound with fixed attention, and these compounds can be C
3S.C
2Aquation, the crystallization of S provide nucleus; With hydrated product C
A(OH)
2Form complex compound, significantly accelerated reaction; Accelerate C
3The aquation of A, and the process of hydrate and gypsum reaction generation ettringite; The secondary hydration reaction takes place in the activity of mineral admixture in early days in the excited cement; Make 60%-70% of total hydration heat concentrate on release in 1 day, make the densification of aquation mineral, drying shrinkage little, improve the early stage and later strength of concrete.
Preferably, described water reducer is naphthalenesulfonate formaldehyde condensation compound.
Preferably, the water-reducing rate of described water reducer is more than or equal to 23%.
Preferably, the viscosity during 25 ℃ of described Natvosols is 800 Cmpa.s.
Preferably, early to coagulate the outward appearance of weighting agent be the powder of beige or grey brown to described special concrete.
By above technical scheme provided by the invention as seen, the present invention has following technique effect:
(1) under the condition of special concrete, mortar very little water material-mud, play early coagulate, strong, tackify, weightening finish, increase density, antifreeze effect early.
(2) early weighting agent can be before cement, iron powder, the special concrete sclerosis of barite, with cement minerals C with fixed attention for special concrete provided by the invention
3A, C
4AF forms and can urge complex compound with fixed attention, and these compounds can be C
3S.C
2Aquation, the crystallization of S provide nucleus; With hydrated product C
A(OH)
2Form complex compound, significantly accelerated reaction; Accelerate C
3The aquation of A, and the process of hydrate and gypsum reaction generation ettringite; The secondary hydration reaction takes place in the activity of mineral admixture in early days in the excited cement; Make 60%-70% of its total hydration heat concentrate on release in 1 day, make the densification of aquation mineral, drying shrinkage little, increase substantially the early stage and later strength of concrete; Reduce the mixture water consumption simultaneously, strengthen workability, increase surface brightness, its unit weight is strengthened.
(3) special concrete provided by the invention early coagulate weighting agent nontoxic, do not fire, chloride ion-containing not, to the reinforcing bar non-corroding.
(4) combined producing tech is easy, steady quality, remarkable benefit.
Embodiment
In order to make those skilled in the art person understand the present invention program better, below the present invention is described in further detail:
The invention provides a kind of special concrete and early coagulate weighting agent, described concrete early coagulates weighting agent and comprises: water reducer 20%-40%(weight ratio), calcium nitrite 7%-13%(weight ratio), calcium formiate 4%-8%(weight ratio), Sodium Thiocyanate 99 1.5%-2.5%(weight ratio), Sodium Silicofluoride 0.8%-1.6%(weight ratio), sodium aluminate 0.3%-0.5%(weight ratio), Natvosol 0.1%-0.2%(weight ratio), alkyl sodium sulfonate 0.1%-0.3%(weight ratio), additive 40%-60%(weight ratio).
Preferably, described additive is flyash.
Preferably, described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), flyash 50%(weight ratio).
Preferably, described additive is water.
Preferably, described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), water 50%(weight ratio).
Preferably, described special concrete early coagulates weighting agent before cement, iron powder, the special concrete sclerosis of barite, with cement minerals C
3A, C
4AF forms and can urge compound with fixed attention, and these compounds can be C
3S.C
2Aquation, the crystallization of S provide nucleus; With hydrated product C
A(OH)
2Form complex compound, significantly accelerated reaction; Accelerate C
3The aquation of A, and the process of hydrate and gypsum reaction generation ettringite; The secondary hydration reaction takes place in the activity of mineral admixture in early days in the excited cement; Make 60%-70% of total hydration heat concentrate on release in 1 day, make the densification of aquation mineral, drying shrinkage little, improve the early stage and later strength of concrete.
Preferably, described water reducer is naphthalenesulfonate formaldehyde condensation compound.
Preferably, the water-reducing rate of described water reducer is more than or equal to 23%.
Preferably, the viscosity during 25 ℃ of described Natvosols is 800 Cmpa.s.
Preferably, early to coagulate the outward appearance of weighting agent be the powder of beige or grey brown to described special concrete.
Described calcium nitrite, calcium formiate, Sodium Thiocyanate 99, Sodium Silicofluoride, sodium aluminate all adopt technical grade; Described Natvosol is white powder, and described alkyl sodium sulfonate is white or pale yellow powder.
Special concrete provided by the invention is a kind of polycomponent, macromolecule mixture, be by its different effect of performance in multiple inorganics, each comfortable special concrete of organism, the mortar hydration reaction process, change the formation rule of ettringite, improve over-all properties, increase degree of compactness, intensity, the weather resistance of the thing piece that forms.
To the present invention be described in more detail by embodiment below:
Embodiment 1
With water reducer 20%(weight ratio), calcium nitrite 13%(weight ratio), calcium formiate 8%(weight ratio), Sodium Thiocyanate 99 2.5%(weight ratio), Sodium Silicofluoride 1.6%(weight ratio), sodium aluminate 0.7%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.3%(weight ratio), flyash 53.7%(weight ratio), drops into cantilever duplex cone-type mixer successively, stirred 30 minutes, the special concrete that obtains is early coagulated weighting agent test, test result is: as shown in table 1.
Table 1
Embodiment 2
With water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), flyash 50%(weight ratio), drops into cantilever duplex cone-type mixer successively, stirred 30 minutes, the special concrete that obtains is early coagulated weighting agent test, test result is: as shown in table 2.
Table 2
Embodiment 3
With water reducer 40%(weight ratio), calcium nitrite 7%(weight ratio), calcium formiate 4%(weight ratio), Sodium Thiocyanate 99 1.5%(weight ratio), Sodium Silicofluoride 0.8%(weight ratio), sodium aluminate 0.3%(weight ratio), Natvosol 0.1%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), water 46.2%(weight ratio), drops into cantilever duplex cone-type mixer successively, stirred 30 minutes, the special concrete that obtains is early coagulated weighting agent test, test result is: as shown in table 3.
Table 3
By above technical scheme provided by the invention as seen, the present invention has following technique effect:
(1) under the condition of special concrete, mortar very little water material-mud, play early coagulate, strong, tackify, weightening finish, increase density, antifreeze effect early.
(2) early weighting agent can be before cement, iron powder, the special concrete sclerosis of barite, with cement minerals C with fixed attention for special concrete provided by the invention
3A, C
4AF forms and can urge complex compound with fixed attention, and these compounds can be C
3S.C
2Aquation, the crystallization of S provide nucleus; With hydrated product C
A(OH)
2Form complex compound, significantly accelerated reaction; Accelerate C
3The aquation of A, and the process of hydrate and gypsum reaction generation ettringite; The secondary hydration reaction takes place in the activity of mineral admixture in early days in the excited cement; Make 60%-70% of its total hydration heat concentrate on release in 1 day, make the densification of aquation mineral, drying shrinkage little, increase substantially the early stage and later strength of concrete; Reduce the mixture water consumption simultaneously, strengthen workability, increase surface brightness, its unit weight is strengthened.
(3) special concrete provided by the invention early coagulate weighting agent nontoxic, do not fire, chloride ion-containing not, to the reinforcing bar non-corroding.
(4) combined producing tech is easy, steady quality, remarkable benefit.
Claims (10)
1. special concrete early coagulates weighting agent, it is characterized in that: described special concrete early coagulates weighting agent and comprises: water reducer 20%-40%(weight ratio), calcium nitrite 7%-13%(weight ratio), calcium formiate 4%-8%(weight ratio), Sodium Thiocyanate 99 1.5%-2.5%(weight ratio), Sodium Silicofluoride 0.8%-1.6%(weight ratio), sodium aluminate 0.3%-0.5%(weight ratio), Natvosol 0.1%-0.2%(weight ratio), alkyl sodium sulfonate 0.1%-0.3%(weight ratio), additive 40%-60%(weight ratio).
2. special concrete according to claim 1 early coagulates weighting agent, and it is characterized in that: described additive is flyash.
3. special concrete according to claim 2 early coagulates weighting agent, it is characterized in that: described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), flyash 50%(weight ratio).
4. special concrete according to claim 1 early coagulates weighting agent, and it is characterized in that: described additive is water.
5. special concrete according to claim 4 early coagulates weighting agent, it is characterized in that: described special concrete early coagulates weighting agent and comprises: water reducer 30%(weight ratio), calcium nitrite 10%(weight ratio), calcium formiate 6%(weight ratio), Sodium Thiocyanate 99 2%(weight ratio), Sodium Silicofluoride 1.2%(weight ratio), sodium aluminate 0.5%(weight ratio), Natvosol 0.2%(weight ratio), alkyl sodium sulfonate 0.1%(weight ratio), water 50%(weight ratio).
6. special concrete according to claim 1 early coagulates weighting agent, it is characterized in that: described special concrete early coagulates weighting agent before cement, iron powder, the special concrete sclerosis of barite, with cement minerals C
3A, C
4AF forms and can urge compound with fixed attention, and these compounds can be C
3S.C
2Aquation, the crystallization of S provide nucleus; With hydrated product C
A(OH)
2Form complex compound, significantly accelerated reaction; Accelerate C
3The aquation of A, and the process of hydrate and gypsum reaction generation ettringite; The secondary hydration reaction takes place in the activity of mineral admixture in early days in the excited cement; Make 60%-70% of total hydration heat concentrate on release in 1 day, make the densification of aquation mineral, drying shrinkage little, improve the early stage and later strength of concrete.
7. special concrete according to claim 1 early coagulates weighting agent, and it is characterized in that: described water reducer is naphthalenesulfonate formaldehyde condensation compound.
8. special concrete according to claim 7 early coagulates weighting agent, and it is characterized in that: the water-reducing rate of described water reducer is more than or equal to 23%.
9. special concrete according to claim 1 early coagulates weighting agent, it is characterized in that: the viscosity during 25 ℃ of described Natvosol is 800 Cmpa.s.
10. special concrete according to claim 1 early coagulates weighting agent, it is characterized in that: the outward appearance that described special concrete early coagulates weighting agent is the powder of beige or grey brown.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200194.5A CN103241984B (en) | 2013-05-27 | 2013-05-27 | Pre-coagulating weighting agent for special concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200194.5A CN103241984B (en) | 2013-05-27 | 2013-05-27 | Pre-coagulating weighting agent for special concrete |
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| CN103241984A true CN103241984A (en) | 2013-08-14 |
| CN103241984B CN103241984B (en) | 2014-08-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086113A (en) * | 2014-06-25 | 2014-10-08 | 江苏奥莱特新材料有限公司 | Concrete synergist |
| CN115321902A (en) * | 2022-08-01 | 2022-11-11 | 河北中耐新材料科技有限公司 | Anti-cracking radiation-proof concrete for preventing neutron radiation and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405468A (en) * | 1981-03-12 | 1983-09-20 | Haun Jr R P | Placid shale weighting agent for water base drilling mud |
| US20040238170A1 (en) * | 2003-05-30 | 2004-12-02 | Bj Services Company | Aqueous storable cement spacer system and method of making and using the same |
| CN102050600A (en) * | 2010-08-25 | 2011-05-11 | 潍坊绿城低碳建筑科技有限公司 | Infusion slurry for sealing seam of assembly type light-weight energy-saving sandwich external wall panel |
| CN102126840A (en) * | 2011-03-02 | 2011-07-20 | 陈子川 | Low-temperature concrete early strength agent |
| CN102220759A (en) * | 2010-02-07 | 2011-10-19 | 谢世尊 | New drilling (punching) bored concrete pile construction method |
| WO2013005609A1 (en) * | 2011-07-05 | 2013-01-10 | 電気化学工業株式会社 | Thickening agent composition for imparting anti-washout property to concrete under water |
-
2013
- 2013-05-27 CN CN201310200194.5A patent/CN103241984B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405468A (en) * | 1981-03-12 | 1983-09-20 | Haun Jr R P | Placid shale weighting agent for water base drilling mud |
| US20040238170A1 (en) * | 2003-05-30 | 2004-12-02 | Bj Services Company | Aqueous storable cement spacer system and method of making and using the same |
| CN102220759A (en) * | 2010-02-07 | 2011-10-19 | 谢世尊 | New drilling (punching) bored concrete pile construction method |
| CN102050600A (en) * | 2010-08-25 | 2011-05-11 | 潍坊绿城低碳建筑科技有限公司 | Infusion slurry for sealing seam of assembly type light-weight energy-saving sandwich external wall panel |
| CN102126840A (en) * | 2011-03-02 | 2011-07-20 | 陈子川 | Low-temperature concrete early strength agent |
| WO2013005609A1 (en) * | 2011-07-05 | 2013-01-10 | 電気化学工業株式会社 | Thickening agent composition for imparting anti-washout property to concrete under water |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086113A (en) * | 2014-06-25 | 2014-10-08 | 江苏奥莱特新材料有限公司 | Concrete synergist |
| CN104086113B (en) * | 2014-06-25 | 2016-10-26 | 江苏中铁奥莱特新材料股份有限公司 | A kind of Concrete synergist |
| CN115321902A (en) * | 2022-08-01 | 2022-11-11 | 河北中耐新材料科技有限公司 | Anti-cracking radiation-proof concrete for preventing neutron radiation and preparation method thereof |
| CN115321902B (en) * | 2022-08-01 | 2023-04-14 | 河北中耐新材料科技有限公司 | Anti-cracking radiation-proof concrete for preventing neutron radiation and preparation method thereof |
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| CN103241984B (en) | 2014-08-13 |
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