CN107935500A - A kind of early-strong-fast-hard type cement - Google Patents
A kind of early-strong-fast-hard type cement Download PDFInfo
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- CN107935500A CN107935500A CN201711203050.XA CN201711203050A CN107935500A CN 107935500 A CN107935500 A CN 107935500A CN 201711203050 A CN201711203050 A CN 201711203050A CN 107935500 A CN107935500 A CN 107935500A
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- early
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- fast
- hard type
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of early-strong-fast-hard type cement.The early-strong-fast-hard type cement is made of the raw material of following mass parts：38~52 parts of cement, 12~22 parts of miberal powders, 12~20 parts of flyash, 2~12 parts of quick limes, 2~12 parts of ardealites, 2~12 parts of bauxites, 1~6 part of sodium bromide and 0.1~1 part of water-reducing agent.The present invention proposes a kind of early-strong-fast-hard type cement, compared with current cement, not only improves early anti pressured intension, but also will not reduce later stage compression strength, is conducive to the extensive use of early-strength cement.
Description
Technical field
The present invention relates to a kind of early-strong-fast-hard type cement.
Background technology
Cement concrete is most large artificial engineering material, various industry and civil buildings, railway, highway, airport, bridge
The construction of many engineerings such as beam, tunnel, harbour and military affairs all be unable to do without concrete.Therefore, concrete is to national economy and society
It can develop and play an important roll.Compared with other common construction materials such as steel, plastics, cement concrete has raw material sources
Extensively, the advantages that energy consumption is low, applied widely, production cost is low and service life is long, within considerable time from now on, water
Cement concrete will be construction material most widely used, that dosage is maximum.
With the needs of engineering construction and the development of construction technology, the demand of high-early strength concrete is also begun to gradually increase
Greatly.The purposes of high-early strength concrete is quite varied, and the purposes of wherein high-early-strength concrete has：1st, need the pre- of early stage compression should
Power concrete；2nd, the precast concrete quickly produced is needed；3rd, the molding engineering of rapid cast in situs；4th, template is accelerated
Service cycle；5th, winter construction；6th, road rapid repair；7th, it is quick to pave the way and other purposes.Each application aspect can more than
Go out, cement concrete of the research and development with the performance such as hard, early strong, high-strength soon has important practical significance.
Early-strength cement type is more at present, they reflect a problem jointly in the application, though here it is to morning
Phase compression strength has significant humidification, but can cause the reduction of later stage compression strength, and therefore, it is difficult to be promoted in actual production
Using.
The content of the invention
It is an object of the invention to provide a kind of early-strong-fast-hard type cement.
The technical solution used in the present invention is：
A kind of early-strong-fast-hard type cement, is made of the raw material of following mass parts：38~52 parts of cement, 12~22 parts of miberal powders,
12~20 parts of flyash, 2~12 parts of quick limes, 2~12 parts of ardealites, 2~12 parts of bauxites, 1~6 part of sodium bromide and 0.1~1
Part water-reducing agent.
Preferably, a kind of early-strong-fast-hard type cement, is made of the raw material of following mass parts：40~50 parts of cement, 15~20
Part miberal powder, 15~18 parts of flyash, 4~10 parts of quick limes, 5~10 parts of ardealites, 4~10 parts of bauxites, 2~5 parts of sodium bromides
With 0.5~1 part of water-reducing agent.
Cement is Portland cement.
Miberal powder is ground granulated blast furnace slag.
Flyash is II grade of F class flyash.
CaO content >=88wt% in quick lime.
Al in bauxite2O3Content >=85wt%.
The particle diameter of sodium bromide is 50~100 μm.
Water-reducing agent is melamine water reducing agent.
The beneficial effects of the invention are as follows：
The present invention proposes a kind of early-strong-fast-hard type cement, compared with current cement, not only improves early anti pressured intension, and
And later stage compression strength will not be reduced, be conducive to the extensive use of early-strength cement.
Embodiment
A kind of early-strong-fast-hard type cement, is made of the raw material of following mass parts：38~52 parts of cement, 12~22 parts of miberal powders,
12~20 parts of flyash, 2~12 parts of quick limes, 2~12 parts of ardealites, 2~12 parts of bauxites, 1~6 part of sodium bromide and 0.1~1
Part water-reducing agent.
Preferably, a kind of early-strong-fast-hard type cement, is made of the raw material of following mass parts：40~50 parts of cement, 15~20
Part miberal powder, 15~18 parts of flyash, 4~10 parts of quick limes, 5~10 parts of ardealites, 4~10 parts of bauxites, 2~5 parts of sodium bromides
With 0.5~1 part of water-reducing agent.
Preferably, cement is Portland cement.
Preferably, the strength grade of cement is the 42.5, one of which of 42.5R；It is further preferred that intensity of cement etc.
Level is 42.5.
Preferably, flyash is II grade of F class flyash.
Preferably, miberal powder is ground granulated blast furnace slag.
Preferably, quick lime is high calcium ash, its CaO content >=88wt%.
Preferably, the Al in bauxite2O3Content >=85wt%.
Preferably, bauxite crosses quality >=99% of 200 mesh.
Preferably, the particle diameter of sodium bromide is 50~100 μm；It is further preferred that the particle diameter of sodium bromide is 74 μm.
Preferably, water-reducing agent is melamine water reducing agent.
Present disclosure is described in further detail below by way of specific embodiment.
Embodiment 1：
The early-strong-fast-hard type cement each component of embodiment 1 is as shown in table 1.
The early-strong-fast-hard type cement of 1 embodiment 1 of table
Cement used is common 42.5 cement of China Resources PO.
Miberal powder used is through crushing, screening gained, the ratio of its chemical analysis and various composition for blast-furnace cinder：SiO2
Content is 41.25wt%, CaO content 38.36wt%, content of MgO 7.43wt%, Al2O3Content is 11.22wt%, S's
Oxide content is 1.32wt%, and other oxides account for 0.42wt%；The particle diameter distribution of blast-furnace cinder is：Particle diameter is less than 2.65 μm
Particle account for 9wt%, particle of the particle diameter less than 5.3 μm accounts for 35wt%, and particle of the particle diameter less than 7.55 μm accounts for 53wt%, and particle diameter is small
65wt% is accounted in 10.71 μm of particles, particle of the particle diameter less than 26.62 μm accounts for 90wt%.
Flyash used is II grade of F class flyash.
Quick lime used is a kind of high calcium ash, its chemical analysis and ratio are：CaO content is 89.6wt%, content of MgO
For 5.75wt%, SiO2Content is 4.65wt%；Its particle diameter distribution is：Particle of the particle diameter less than 3.12 μm accounts for 10wt%, particle diameter
Particle less than 5.35 μm accounts for 40wt%, and particle of the particle diameter less than 6.83 μm accounts for 40wt%, and particle of the particle diameter less than 7.48 μm accounts for
60wt%, particle of the particle diameter less than 36.38 μm account for 90wt%.
Ardealite used, its particle diameter distribution are：Particle of the particle diameter less than 3.12 μm accounts for 10wt%, and particle diameter is less than 5.35 μm
Particle account for 40wt%, particle of the particle diameter less than 6.83 μm accounts for 40wt%, and particle of the particle diameter less than 7.48 μm accounts for 60wt%, particle diameter
Particle less than 36.38 μm accounts for 90wt%.
Each chemical analysis ratio of bauxite used is：SiO2Content is 8.17%, Al2O3Content is 85.07%, Fe2O3
Content is 1.18%, TiO2Content is 3.76%, CaO content 0.24%, content of MgO 0.21%, K2O content is 0.44%；
Bauxite accounts for 99.5% by the ratio of 200 mesh particle diameters.
The technical grade sodium bromide that sodium bromide used produces for Wujiang Xin Mao Chemical Co., Ltd.s, wherein bromination sodium content >=
99.6%, particle diameter is 200 mesh (74 μm).
Water-reducing agent used is melamine water reducing agent.
Embodiment 2：
The early-strong-fast-hard type cement each component of embodiment 2 is as shown in table 2, and raw material used is identical with embodiment 1.
The early-strong-fast-hard type cement of 2 embodiment 2 of table
Embodiment 3：
The early-strong-fast-hard type cement each component of embodiment 3 is as shown in table 3, and raw material used is identical with embodiment 1.
The early-strong-fast-hard type cement of 3 embodiment 3 of table
| Raw material | Mass parts |
| Cement | 44 |
| Miberal powder | 17 |
| Flyash | 15 |
| Quick lime | 4 |
| Ardealite | 10 |
| Bauxite | 6 |
| Sodium bromide | 4 |
| Water-reducing agent | 0.7 |
Embodiment 4：
The early-strong-fast-hard type cement each component of embodiment 4 is as shown in table 4, and raw material used is identical with embodiment 1.
The early-strong-fast-hard type cement of 4 embodiment 4 of table
Embodiment 5：
The early-strong-fast-hard type cement each component of embodiment 5 is as shown in table 5, and raw material used is identical with embodiment 1.
The early-strong-fast-hard type cement of 5 embodiment 5 of table
| Raw material | Mass parts |
| Cement | 48 |
| Miberal powder | 15 |
| Flyash | 15 |
| Quick lime | 5 |
| Ardealite | 6 |
| Bauxite | 6 |
| Sodium bromide | 5 |
| Water-reducing agent | 0.8 |
Embodiment 6：
The early-strong-fast-hard type cement each component of embodiment 6 is as shown in table 6, and raw material used is identical with embodiment 1.
The early-strong-fast-hard type cement of 6 embodiment 6 of table
| Raw material | Mass parts |
| Cement | 50 |
| Miberal powder | 15 |
| Flyash | 18 |
| Quick lime | 8 |
| Ardealite | 5 |
| Bauxite | 10 |
| Sodium bromide | 4 |
| Water-reducing agent | 1 |
Comparative example 1：
42.5 grade Portland cements of the cementitious material used in embodiment 1~6 used in comparative example 1.
Comparative example 2：
Cementitious material used in comparative example 2 is commercially available 42.5 grades of early-strength portland cements.
Test method：
Early-strong-fast-hard type cement, then the cement material with comparative example 1~2 is made after embodiment 1~6 is mixed by proportioning,
It is 0.4 equally by the ratio of mud, prepares the concrete of embodiment 1~6 and comparative example 1~2 respectively, then carry out strength test.
The method of strength test according to《GB/T50081-2016 standard for test methods of mechanical properties of ordinary concretes》, respectively 3 days, 7
It carried out ruggedness test with 28 days.
The results are shown in Table 7 for the concrete test block strength character of embodiment 1~6 and comparative example 1~2.
7 concrete test block intensity results of table
| 3 days intensity (MPa) | 7 days intensity (MPa) | 28 days intensity (MPa) | |
| Embodiment 1 | 30.1 | 36.5 | 43.6 |
| Embodiment 2 | 29.5 | 37.7 | 44.7 |
| Embodiment 3 | 31.5 | 37.3 | 44.2 |
| Embodiment 4 | 31.8 | 38.1 | 46.1 |
| Embodiment 5 | 32.9 | 39.5 | 47.9 |
| Embodiment 6 | 31.2 | 37.3 | 45.8 |
| Comparative example 1 | 19.5 | 32.9 | 42.3 |
| Comparative example 2 | 23.8 | 35.2 | 39.7 |
From the results shown in Table 7, its 3 days intensity ratio early-strength cement of test specimen of the invention will be got well, while its 28 days
Intensity is also higher than early-strength cement and plain edition cement.So be prepared by early-strong-fast-hard type cement formula of the present invention
Concrete, not only increases the compression strength of early stage, while the compression strength in later stage will not reduce.
Claims (9)
- A kind of 1. early-strong-fast-hard type cement, it is characterised in that：It is made of the raw material of following mass parts：38~52 parts of cement, 12~ 22 parts of miberal powders, 12~20 parts of flyash, 2~12 parts of quick limes, 2~12 parts of ardealites, 2~12 parts of bauxites, 1~6 part of bromination Sodium and 0.1~1 part of water-reducing agent.
- A kind of 2. early-strong-fast-hard type cement according to claim 1, it is characterised in that：By the raw material group of following mass parts Into：40~50 parts of cement, 15~20 parts of miberal powders, 15~18 parts of flyash, 4~10 parts of quick limes, 5~10 parts of ardealites, 4~10 Part bauxite, 2~5 parts of sodium bromides and 0.5~1 part of water-reducing agent.
- A kind of 3. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：Cement is normal silicate water Mud.
- A kind of 4. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：Miberal powder is ground granulated blast furnace slag.
- A kind of 5. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：Flyash is II grade of F class fine coal Ash.
- A kind of 6. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：CaO content in quick lime >= 88wt%.
- A kind of 7. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：Al in bauxite2O3Content >=85wt%.
- A kind of 8. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：The particle diameter of sodium bromide for 50~ 100μm。
- A kind of 9. early-strong-fast-hard type cement according to claim 1 or 2, it is characterised in that：Water-reducing agent subtracts for melamine Aqua.
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| CN201711203050.XA CN107935500A (en) | 2017-11-27 | 2017-11-27 | A kind of early-strong-fast-hard type cement |
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| CN201711203050.XA CN107935500A (en) | 2017-11-27 | 2017-11-27 | A kind of early-strong-fast-hard type cement |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010007534A2 (en) * | 2008-07-18 | 2010-01-21 | Lafarge | Aqueous formulations |
| CN102557561A (en) * | 2011-11-23 | 2012-07-11 | 淄博乾耀固结材料有限公司 | High-performance sand-soil consolidation material, as well as preparation method and using method thereof |
| CN106587872A (en) * | 2016-11-21 | 2017-04-26 | 同济大学 | Early strength type ardealite-based micro dilatant grouting material |
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