CN101948258B - General portland cement modifier containing aluminate minerals and application method thereof - Google Patents
General portland cement modifier containing aluminate minerals and application method thereof Download PDFInfo
- Publication number
- CN101948258B CN101948258B CN 201010275391 CN201010275391A CN101948258B CN 101948258 B CN101948258 B CN 101948258B CN 201010275391 CN201010275391 CN 201010275391 CN 201010275391 A CN201010275391 A CN 201010275391A CN 101948258 B CN101948258 B CN 101948258B
- Authority
- CN
- China
- Prior art keywords
- portland cement
- general purpose
- modifier
- correcting agent
- aluminium
- 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.)
- Expired - Fee Related
Links
Abstract
The invention relates to a general a portland cement modifier containing aluminate minerals and an application method thereof. The modifier is prepared by taking waste residue with high content of aluminum and natural limestone as raw materials, reasonably designing the mineral compositions of ingredients, calcining at 1250 to 1350 DEG C for 15-60min to obtain a modifier clinker, and adding gypsum to the obtain modifier clinker to obtain the general portland cement modifier with high contents of aluminate minerals, such as CA and C12A7. The modifier clinker or the modifier can be mixed into general portland cement with appropriate ratio to replace a part of clinker, thus the characteristics of rapid hydration and excitation on slag, fly ash and other admixtures of early strength minerals are utilized so as to form more hydrated products such as ettringite (AFt), hydrated aluminate (ferrite) and the like and regulate the types and ratio of hydrated products of portland cement, thereby achieving the purpose of improving the performance of general portland cement and lowering the production cost.
Description
Technical field
The present invention relates to a kind of general purpose portland cement properties-correcting agent that contains aluminium mineral material, particularly a kind of general purpose portland cement properties-correcting agent of aluminium mineral material and method of application thereof of containing belongs to field of inorganic nonmetallic material.
Background technology
Silicate cement is that the inherent building material field of world wide is used the gelling material the most extensive, that consumption is maximum.Its grog forms (C by four kinds of essential minerals
3S, C
2S, C
3A and C
4AF), calcining temperature is 1450 ℃.C
3S and C
2S is the essential mineral in the Portland clinker, and its hydrated product mainly is hydrated calcium silicate (C-S-H) and calcium hydroxide, C
3S content is high and aquation is very fast, and the strength property of cement is played a major role.If but improve C in the cement clinker
3The S mineral content can make the burn-ability variation of raw material, and calcining temperature raises.C
3A and C
4AF is the less important mineral in the grog, and its hydrated product mainly is the sour calcium of aquation sulphur aluminium (iron) (ettringite or AFt).C
3The A hydration reaction is rapid, and hydration process is emitted a large amount of heat, fast solidifying, and early strength is higher, but easily makes cement anxious solidifying, should control its content in low scope.Formation and matching relationship about 4 large mineral in the silicate cement have carried out going deep into systematic research, mineral composition characteristics in view of Portland clinker, the hydrated product that forms in its hydration process mainly is hydrated calcium silicate (C-S-H), calcium hydroxide and a small amount of ettringite etc., make this cement show early strength on the low side, the shortcoming such as the hydration process volumetric shrinkage is larger.When the slag that mixes larger proportion, flyash or other industrial residues are made blended material, also can cause the intensity of cement obviously to reduce, prolong time of coagulation.
In recent years, by in Portland clinker, introducing the high gelling mineral of non-traditional portland cement clinker system
To replace C
3A obtains a new cement clinker ore deposit phase system with high gelling, as: alite-aluminosulfate cement, the essential mineral of its grog consists of C
3S, C
2S,
And C
4AF.In addition, the appearance of some complex cements, such as high alumina-Composite Cement on Silicate, sulplo-aluminate-Composite Cement on Silicate, its objective is and utilize varying strength mineral contained in two kinds of cement, carry out the cement performance complementation, aluminate or sulphoaluminate phase aquation are fast and to slag in performance high-alumina cement or the sulphoaluminate cement clinker, the blended materials such as flyash have the characteristics of excitation, hydration process can form more ettringite, the hydrated products such as aquation aluminate and aluminium glue, regulate kind and the quantitative proportion of silicate cement hydration product, reach the purpose that improves blended material silicate cement performance.But the production of high-alumina cement or aluminosulfate cement is tighter to ingredient requirement, needs specific Technology, and the market price is higher, generally is not suitable for as the performance of regulating general purpose portland cement.
Summary of the invention
In order in the silicate cement system, to introduce early-strength type aluminium mineral material (CA, C
12A
7), reach kind and the proportioning of regulating the silicate cement hydration product, the purpose that improves general purpose portland cement (silicate cement of especially high blended material content) performance and reduce production costs.The invention provides a kind of general purpose portland cement properties-correcting agent and application method thereof that contains aluminium mineral material.
A kind of general purpose portland cement properties-correcting agent that contains aluminium mineral material, the preparation method is as follows:
(1) take high aluminium content waste residue and natural limestone as raw material, take the chemical constitution of high aluminium content waste residue as according to carrying out charge calculation, form according to raw material different, design aluminium mineral material (CA, C
12A
7), C
2S and C
4AF mineral quality ratio range is aluminium mineral material: 15～45%; C
2S:40～75%; C
4AF:5～20% is introduced 0～2% CaF
2Make mineralizer (adding take the mineral total mass as benchmark), the raw material admixtion of preparation properties-correcting agent;
(2) raw material admixtion grinding to 0.08mm square hole sieve is tailed over less than 15%, in 1250～1350 ℃ of calcining 15～60min, make grog;
(3) grog is equipped with 1～8% gypsum (take the properties-correcting agent total mass as benchmark), grinding to 0.08mm square hole sieve tails over less than 10%, makes cement modifier.
Described high aluminium content waste residue is: flyash, coal gangue, slag or alumina mine tailing.
The mass ratio of described high aluminium content waste residue and natural limestone is: (20～50): (50～80).
A kind of general purpose portland cement properties-correcting agent that contains aluminium mineral material, its application method is as follows:
To contain the general purpose portland cement properties-correcting agent grog of aluminium mineral material to account for 5～30% quality proportioning and Portland clinker and the blended material intergrindings such as gypsum, slag and flyash, the control fineness reaches 340m
2/ kg; The general purpose portland cement properties-correcting agent that perhaps directly will contain aluminium mineral material mixes to account for 5～30% quality proportioning and general purpose portland cement, and the control fineness reaches 340m
2/ kg makes and has fast hard, the general purpose portland cement of strong and compensate for shrinkage or microdilatancy performance early.
The present invention proposes a kind of employing high aluminium content waste residue (being mainly: flyash, coal gangue, slag or alumina mine tailing etc.) and natural limestone is feed proportioning, low-firing CA and C
12A
7Deng the higher general purpose portland cement properties-correcting agent of aluminium mineral material content.This properties-correcting agent can utilize industrial residue and calcining temperature low in a large number, both can reduce production costs, and has again environment protection significance.Because properties-correcting agent contains the early-strength type aluminium mineral material of larger proportion, it is incorporated into replacement part grog in the general purpose portland cement with suitable proportioning, performance early strong mineral aquation is fast and the blended materials such as slag, flyash are had characteristics of excitation, form the hydrated products such as more ettringite (AFt) and aquation aluminium (iron) hydrochlorate, regulate kind and the proportioning of silicate cement hydration product, reach the purpose that improves the general purpose portland cement performance.In suitable admixture scope, can obviously improve each age strength of general purpose portland cement.Be 40% silicate cement for the blended material addition content, its 3d intensity can improve 5～20%, 28d intensity and improve 3～10%; Shorten 15～30% time of coagulation; Volumetric shrinkage-3.0～+ 1.0 * 10
-4The Substitute For Partial Portland clinker can reduce production costs.
Embodiment
Below in conjunction with specific embodiment essence of the present invention is described.Be necessary to be pointed out that at this: these embodiment only are not used in for the proved invention and limit the scope of the invention.
Embodiment 1
(1) a kind of preparation that contains the general purpose portland cement properties-correcting agent of aluminium mineral material
1. take flyash and natural limestone as raw material, with contained Al in the flyash
2O
3Carry out charge calculation to form maximum CA mineral as foundation, the chemical constitution of raw material sees Table 1.
Table 1 calculates the chemical constitution of desired raw material
| Loss | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | SO 3 | ∑ | |
| Flyash | 2.37 | 50.11 | 36.69 | 5.55 | 3.12 | 0.56 | - | 98.40 |
| The alumina mine tailing | 13.89 | 40.19 | 43.17 | 1.48 | 0.71 | 0.47 | - | 99.91 |
| Wingdale | 42.77 | 2.12 | 0.33 | 0.24 | 52.79 | 1.43 | - | 99.58 |
| Gypsum | 18.10 | 5.02 | 0.45 | 0.24 | 30.17 | 0.24 | 42.50 | 96.72 |
Chemical constitution according to table 1 Raw is calculated, and obtains the present embodiment raw material mass mixture ratio and is: flyash 29.34%; Wingdale 69.14%; Add 0.5%CaF
2Make mineralizer, be prepared into the raw material admixtion of properties-correcting agent;
2. admixtion grinding to 0.08mm square hole sieve is tailed over less than 15%, in 1330 ℃ of calcining 40min, make the properties-correcting agent grog;
3. grog is equipped with 6% gypsum (take the properties-correcting agent total mass as benchmark), grinding to 0.08mm square hole sieve tails over less than 10%, makes cement modifier.
(2) a kind of application method that contains the general purpose portland cement properties-correcting agent of aluminium mineral material
The general purpose portland cement properties-correcting agent grog that 1. will contain aluminium mineral material mixes with the mass ratio of Portland clinker with 10: 90, and the mixture that obtains and its quality 5% gypsum, 20% slag and 12% flyash intergrinding to fineness are 340m
2/ kg makes the modification general purpose portland cement.
2. with the moulding of modification general purpose portland cement, maintenance under the standard conditions, 3 days and 28 days age strengths are respectively: 19.2 and 37.6MPa; Be initial set (h:min): 2:09 the time of coagulation of test cement under the standard conditions; Final set (h:min): 4:46; To not add the general purpose portland cement moulding of properties-correcting agent, maintenance under the standard conditions, 3 days and 28 days age strengths are respectively: 17.5 and 35.6MPa; Be initial set (h:min): 5:12 the time of coagulation of test cement under the standard conditions; Final set (h:min): 7:08.
Embodiment 2
(1) take alumina mine tailing and Wingdale as raw material, with contained Al in the alumina mine tailing
2O
3To form maximum CA mineral as according to carrying out charge calculation.Chemical constitution according to table 1 Raw is calculated, and obtains the present embodiment proportioning raw materials and is: alumina mine tailing 32.77%; Wingdale 67.23%; Add the 0.5%CaF of above-mentioned raw materials quality
2Make mineralizer, be prepared into the raw material admixtion of properties-correcting agent;
2. admixtion grinding to 0.08mm square hole sieve is tailed over less than 15%, in 1350 ℃ of calcining 40min, make grog;
3. grog is equipped with 8% gypsum (take the properties-correcting agent total mass as benchmark), grinding to 0.08mm square hole sieve tails over less than 10%, makes cement modifier.
(2) a kind of application method that contains the general purpose portland cement properties-correcting agent of aluminium mineral material
1. will contain the general purpose portland cement properties-correcting agent of aluminium mineral material and general purpose portland cement and mix with 8: 92 mass ratio, the control fineness reaches 340m
2/ kg makes the modification general purpose portland cement.
2. with the moulding of modification general purpose portland cement, maintenance under the standard conditions, 3 days and 28 days age strengths are respectively: 20.3 and 37.9MPa; Be initial set (h:min): 1:53 the time of coagulation of test cement under the standard conditions; Final set (h:min): 4:23; To not add the general purpose portland cement moulding of properties-correcting agent, maintenance under the standard conditions, 3 days and 28 days age strengths are respectively: 17.5 and 35.6MPa; Be initial set (h:min): 5:12 the time of coagulation of test cement under the standard conditions; Final set (h:min): 7:08.
Claims (3)
1. a general purpose portland cement properties-correcting agent that contains aluminium mineral material is characterized in that, the preparation method is as follows:
(1) take high aluminium content waste residue and natural limestone as raw material, the mass ratio of described high aluminium content waste residue and natural limestone is 20～50 ︰ 50～80, chemical constitution take the high aluminium content waste residue is carried out charge calculation as foundation, forms difference according to raw material, design aluminium mineral material, C
2S and C
4AF mineral quality ratio range is aluminium mineral material: 15～45%; C
2S:40～75%; C
4AF:5～20%, the CaF of introducing mineral quality 2%
2Make mineralizer, the raw material admixtion of preparation properties-correcting agent;
(2) raw material admixtion grinding to 0.08mm square hole sieve is tailed over less than 15%, in 1250～1350 ℃ of calcining 15～60min, make the cement modifier grog;
(3) the cement modifier grog is equipped with the gypsum of its quality 1～8%, grinding to 0.08mm square hole sieve tails over less than 10%, makes cement modifier.
2. according to the general purpose portland cement properties-correcting agent that contains aluminium mineral material claimed in claim 1, it is characterized in that, described high aluminium content waste residue is: flyash, coal gangue, slag or alumina mine tailing.
3. the application method that contains the general purpose portland cement properties-correcting agent of aluminium mineral material claimed in claim 1, it is characterized in that: the general purpose portland cement properties-correcting agent grog that will contain aluminium mineral material is with 5～30% quality proportioning and Portland clinker and gypsum, slag and flyash mixture intergrinding, and the control fineness reaches 340m
2/ kg; The general purpose portland cement properties-correcting agent that perhaps will contain aluminium mineral material mixes with 5～30% quality proportioning and general purpose portland cement, and the control fineness reaches 340m
2/ kg makes the modification general purpose portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275391 CN101948258B (en) | 2010-09-08 | 2010-09-08 | General portland cement modifier containing aluminate minerals and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275391 CN101948258B (en) | 2010-09-08 | 2010-09-08 | General portland cement modifier containing aluminate minerals and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101948258A CN101948258A (en) | 2011-01-19 |
| CN101948258B true CN101948258B (en) | 2013-02-06 |
Family
ID=43451908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010275391 Expired - Fee Related CN101948258B (en) | 2010-09-08 | 2010-09-08 | General portland cement modifier containing aluminate minerals and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101948258B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110667A (en) * | 2015-07-31 | 2015-12-02 | 兴安宸亿工贸有限公司 | Calcium aluminate cement |
| CN109437625A (en) * | 2018-12-21 | 2019-03-08 | 嘉华特种水泥股份有限公司 | A kind of white sulphate aluminium cement and its production method |
| CN110981241B (en) * | 2019-12-27 | 2020-09-25 | 河南理工大学 | Modified reinforced gypsum material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002080259A (en) * | 2000-09-08 | 2002-03-19 | Taiheiyo Cement Corp | Hydraulicity composition |
| CN101671133B (en) * | 2009-09-30 | 2012-03-21 | 永州市中大特种水泥有限责任公司 | Modified low-alkalinity sulphoaluminate cement |
-
2010
- 2010-09-08 CN CN 201010275391 patent/CN101948258B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 刘晓存等."快硬贝利特水泥的研究".《山东建材学院学报》.1992,第6卷(第1期),8-13. |
| 刘晓存等."阿利特-硫铝酸盐水泥与硅酸盐水泥复合性能的研究".《水泥》.1998,(第2期),10-12. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101948258A (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101917017B1 (en) | Rapid-setting and hardening, high-belite sulfoaluminate cement clinker as well as application and production process thereof | |
| Ergün | Effects of the usage of diatomite and waste marble powder as partial replacement of cement on the mechanical properties of concrete | |
| AU2014317427A1 (en) | Fluxes/mineralizers for calcium sulfoaluminate cements | |
| CN104496228A (en) | Road silicate cement clinker and preparation method thereof | |
| KR20140027981A (en) | Cementitious binders containing pozzolanic materials | |
| CN108675657B (en) | Method for preparing silicate-sulphoaluminate composite system clinker by using waste residues | |
| CN113336516A (en) | Cementing material prepared from multi-element solid wastes and cooperative regulation and control method thereof | |
| CN103435281A (en) | Cement clinker and preparation process thereof | |
| CN108164164A (en) | Complex cement and preparation method thereof | |
| CN105130220B (en) | With discarded concrete and the method for sludge eco-cement and active sand | |
| CN109369044B (en) | Sulphoaluminate cement and preparation method thereof | |
| CN109896770B (en) | Concrete reinforcing agent | |
| CN103193431A (en) | Quartz tailing autoclaved aerated concrete building block and preparation method thereof | |
| CN103922619A (en) | Desulfurized gypsum-based hydraulic cementing material | |
| CN104860554A (en) | New-style composite base material for reinforcing foundation manufactured via reconstruction of steel slag at normal temperature | |
| CN112456830A (en) | Micro-expansion high belite sulphoaluminate cement and production method thereof | |
| CN102838308B (en) | Expanded clinker as well as expansion agent and preparation method thereof | |
| CN112661424A (en) | Environment-friendly cement and preparation method thereof | |
| Li et al. | Study on high-strength composite portland cement with a larger amount of industrial wastes | |
| CN105000814A (en) | Processing method for preparing fast-hardening early-strength oil well cement with industrial waste slag | |
| CN101948257B (en) | General portland cement modifying agent containing high cementing property mineral C4A3* and application method thereof | |
| CN1315749C (en) | High strength silicate clinker and its preparing method | |
| CN101948258B (en) | General portland cement modifier containing aluminate minerals and application method thereof | |
| CN104961363B (en) | A kind of method of the active ground-slag of use shaft kiln factory and office reason discarded concrete system and aggregate | |
| CN101462837B (en) | Method for producing cement clinker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150908 |
|
| EXPY | Termination of patent right or utility model |