CN109503005A - A kind of PSA grades of slow setting cement and preparation method thereof and concrete road - Google Patents
A kind of PSA grades of slow setting cement and preparation method thereof and concrete road Download PDFInfo
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- CN109503005A CN109503005A CN201811629307.2A CN201811629307A CN109503005A CN 109503005 A CN109503005 A CN 109503005A CN 201811629307 A CN201811629307 A CN 201811629307A CN 109503005 A CN109503005 A CN 109503005A
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- psa
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- slag
- setting cement
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of PSA grades of slow setting cement; belong to a kind of PSA grades of slow setting cement, raw material include: 51%~59% Portland clinker, 32%~37% granulated bf slag slag powders, 4%~6% flyash and 4%~6% desulfurized gypsum based on mass percentage.The present invention also provides the preparation method of PSA grades of slow setting cement include will be as mixed after above-mentioned Portland clinker, flyash, granulated bf slag miberal powder and desulfurized gypsum combined grinding or grinding.The retarding time of PSA grades of slow setting cement made from the preparation method of above-mentioned PSA grades of slow setting cement and slow setting cement is long.
Description
Technical field
The present invention relates to cement preparation technical fields, in particular to a kind of PSA grades of slow setting cement and its preparation
Method and concrete road.
Background technique
Cement, powdery hydraulicity inorganic coagulation material.At slurry after adding water and stirring, can harden in air or in water
Preferably hardening, and can be cemented together securely materials such as sand, stones, is very important material in a kind of building.
Currently, with the fast development of high-grade road traffic modernization construction, Developing Cement Concrete Pavement has been put
The critical positions for having arrived road construction, due to road construction spice, the times such as to pave, be compacted longer, it is necessary in cement setting
Between arrive before complete, user requires cement setting time to need to extend according to site operation situation, under normal circumstances according to applying
Work requires jelling time to should be greater than 4h final setting time not less than 6h.
But the retarding time of the slow setting cement of existing PSA intensity level still falls short of, so that usually in road
Spice the work such as paves, is compacted and do not finish cement also and condense, therefore the road quality being laid with is caused to reduce.
In consideration of it, special propose the application.
Summary of the invention
The present invention provides a kind of PSA grades of slow setting cement, it is intended to improve what the existing cement retardative time fell short of
Problem.
The present invention is implemented as follows:
A kind of PSA grades of slow setting cement, raw material include: 51%~59% silicate cement based on mass percentage
Mud clinker, 32%~37% granulated bf slag slag powders, 4%~6% flyash and 4%~6% desulfurized gypsum.
A kind of preparation method of PSA grades of slow setting cement, including by above-mentioned Portland clinker, granulated bf slag
Slag powders, flyash and desulfurized gypsum combined grinding.
A kind of preparation method of PSA grades of slow setting cement, including above-mentioned Portland clinker grinding is obtained silicon
Granulated bf slag slag powders grinding is obtained granulated bf slag slag powder and fine powder, by flyash grinding by acid salt cement clinker fine powder
Flyash fine powder is obtained, desulfurized gypsum grinding is obtained into desulfurized gypsum fine powder, by Portland clinker fine powder, granulated bf slag
Slag powder and fine powder, flyash fine powder and the mixing of desulfurized gypsum fine powder.
A kind of concrete road, using above-mentioned PSA grade slow setting cement or above-mentioned PSA grade slow setting cement
PSA made from preparation method grades of slow setting cement is laid with to obtain.
The beneficial effects of the present invention are: the PSA grade slow setting cement that the present invention obtains by above-mentioned design, due to using
The ground granulated blast furnace slag of large dosage, then participated in properly mixed flyash and desulfurized gypsum, so that PSA grades obtained is slow
Condensate mud is suitable for mass concrete, has condensation hardening slow, and early strength is slightly lower, and later strength growth rate is high, anticorrosive
The characteristics of ability is strong, heat-resist, and durability is good, and later strength is high, enhances roadbed durability.Its presetting period is 350~375
Minute, final setting time is 405~445 minutes, and intensity is high, belongs to PSA grades.Particularly, when its raw material presses quality hundred
Dividing content meter includes: 54%~56% Portland clinker, 34%~36% granulated bf slag slag powders, 4.5%~5.5%
When flyash and 4.5%~5.5% desulfurized gypsum, retarding time is further lengthened, and the presetting period is greater than 360min, when final set
Between be greater than 420min.
The preparation method for the PSA grade slow setting cement that the present invention obtains by above-mentioned design, it is easy to operate, it can make
Obtain intensity height, the long cement of retarding time.
The concrete road that the present invention obtains by above-mentioned design, due to using PSA grades of slow setting provided by the invention
Cement is laid with to obtain, therefore its quality is good.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of PSA grades of slow setting cement is provided to the embodiment of the present invention below to illustrate.
A kind of PSA grades of slow setting cement, raw material include: 51%~59% silicate cement based on mass percentage
Mud clinker, 32%~37% granulated bf slag slag powders, 4%~6% flyash and 4%~6% desulfurized gypsum.
Above-mentioned PSA grades of slow setting cement, due to using the ground granulated blast furnace slag of large dosage, then with properly mixed flyash
And desulfurized gypsum participates in, so that PSA grades of slow setting cement obtained is suitable for mass concrete, has condensation hardening
Slowly, early strength is slightly lower, and later strength growth rate is high, and resistance to corrosion is strong, and heat-resist, durability is good, and later strength is high, increases
The characteristics of strong roadbed durability.Its presetting period is 350~375 minutes, and final setting time is 405~445 minutes, and intensity is high,
Belong to PSA grades.
Further, raw material include: based on mass percentage 54%~56% Portland clinker, 34%~
36% granulated bf slag slag powders, 4.5%~5.5% flyash and 4.5%~5.5% desulfurized gypsum.This composition and ratio
The presetting period of PSA made from raw material grades of slow setting cement is greater than 360min, and final setting time is greater than 420min.
Further, for the setting time of the PSA grades of slow setting cement of raising under the premise of not influencing intensity, former material
Material further includes the liquid molasses that mass percentage is less than or equal to 0.09%, when liquid molasses extend slow setting as retarder
Between.Preferably, more significantly extend retarding effect to have the liquid molasses of addition, liquid molasses account for raw material quality
Percentage composition is 0.05%~0.09%.
Further, to make the setting time longer intensity of PSA grades of slow setting cement obtained higher, silicate cement
Mud clinker count in mass ratio include: 3.5~4:218~219:45~46.5:30~33:660~663:33~33.5:4.5~
LOSS, SiO of 5.5:0.2~0.252、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-。
Further, to make the setting time longer intensity of PSA grades of slow setting cement obtained higher, flyash is pressed
Mass ratio meter includes: 90~100:360~400:350~395:53~54.2:47~49.5:5~5.5:29~29.6:0.2
~0.3 LOSS, SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-。
Further, to make the setting time longer intensity of PSA grades of slow setting cement obtained higher, granulated blast-furnace
The loss on ignition of slag slag powders is calculated as -0.7%~-0.65% by mass percentage, SiO in the granulated bf slag slag powders2、
Al2O3、Fe2O3、CaO、MgO、SO3And Cl-Mass ratio are as follows: 300~350:155~165:14~16:380~430:80~
90:7.5~8.5:0.2~0.3.
Desulfurized gypsum can directly select commercially available desulfurized gypsum in middle invention, in embodiments of the present invention, by quality hundred
Content meter is divided to select chemical composition are as follows: 2%SiO2, 0.32%Al2O3, 0.42%Fe2O3, 31.82%CaO, 0.12%MgO,
43.2%SO3, 0.04%Cl-, surplus be inevitable impurity, desulfurized gypsum.
LOSS indicates loss on ignition in above-mentioned each constituent.
A kind of preparation method of PSA grades of slow setting cement, including by Portland clinker, granulated bf slag slag
Powder, flyash and desulfurized gypsum combined grinding both obtain PSA grades of slow setting cement.Preferably, combined grinding is specific surface area
340~400m2The powder of/kg.Then it is transported in cement bunker and is stored by elevator.The cement of this fineness range is laid with to obtain
Road surface be less prone to crack.
A kind of preparation method of PSA grades of slow setting cement, including by the portland cement of Portland clinker grinding
Granulated bf slag slag powders grinding is obtained granulated bf slag slag powder and fine powder, flyash grinding is obtained fine coal by clinker fine powder
Desulfurized gypsum grinding is obtained desulfurized gypsum fine powder by grey fine powder, then by Portland clinker fine powder, granulated bf slag slag
Powder and fine powder, flyash fine powder and desulfurized gypsum fine powder are mixed to get PSA grades of slow setting cement.Preferably, portland cement
Clinker fine powder, granulated bf slag slag powder and fine powder, flyash fine powder and desulfurized gypsum fine powder be specific surface area be 340~
400m2The powder of/kg.Then it is transported in cement bunker and is stored by elevator.After each ingredient fine powder mixing of this fineness range
Also within this range, the road surface that the slow setting cement of this fineness range is laid with is less prone to be split the fineness of obtained slow setting cement
Seam.
A kind of concrete road, using above-mentioned PSA grade slow setting cement or above-mentioned PSA grade slow setting cement
PSA made from preparation method grades of slow setting cement is laid with to obtain, due to using PSA grades of slow setting cement provided by the invention
Laying obtains, therefore its quality is good.
A kind of slow setting cement provided by the invention and preparation method thereof is specifically described below in conjunction with specific embodiment.
Embodiment 1
A kind of PSA grades of slow setting cement, raw material quality percentage composition composition are as follows: 51% Portland clinker,
37% granulated bf slag slag powders, 6% flyash and 6% desulfurized gypsum.Wherein ingredient presses quality in Portland clinker
Than counting LOSS, SiO including 3.8:218.9:45.6:31.8:661.4:33.2:5:0.232、Al2O3、Fe2O3, CaO, MgO and
SO3.In flyash ingredient count in mass ratio include: 98:380:380:53.8:48.7:5.3:29.3:0.2 LOSS, SiO2、
Al2O3、Fe2O3、CaO、MgO、SO3And Cl-.Granulated bf slag slag powders loss on ignition is -0.7%, granulated bf slag slag powders
Middle SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-Mass ratio are as follows: 350:155:16:380:90:7.5:0.3.
A kind of preparation method of PSA grades of slow setting cement, takes above-mentioned Portland clinker 510kg, granulated bf slag
Slag powders 370kg, flyash 60kg, desulfurized gypsum 60kg, being placed in grinding in cement grinding mill and obtaining specific surface area is 340~400m2/
The powder of kg is PSA grades of slow setting cement.
Embodiment 2
A kind of PSA grades of slow setting cement, raw material quality percentage composition composition are as follows: 59% Portland clinker,
32% granulated bf slag slag powders, 4% flyash and 6% desulfurized gypsum.Wherein ingredient presses quality in Portland clinker
Than LOSS, SiO that meter includes: 4:218:46.5:30:663:33.5:4.5:0.22、Al2O3、Fe2O3、CaO、MgO、SO3And
Cl-.In flyash ingredient count in mass ratio include: 90:400:350:54.2:47:5.5:29.6:0.2 LOSS, SiO2、
Al2O3、Fe2O3、CaO、MgO、SO3And Cl-.Granulated bf slag slag powders loss on ignition is -0.65%, granulated bf slag slag powders
Middle SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-Mass ratio are as follows: 300:165:14:430:80:8.5:0.2.
A kind of preparation method of PSA grades of slow setting cement, takes above-mentioned Portland clinker 590kg, granulated bf slag
Slag powders 320kg, flyash 40kg, desulfurized gypsum 60kg, being placed in grinding in cement grinding mill and obtaining specific surface area is 340~400m2/
The powder of kg is PSA grades of slow setting cement.
Embodiment 3
A kind of PSA grades of slow setting cement, raw material quality percentage composition composition are as follows: 55% Portland clinker,
35% granulated bf slag slag powders, 5% flyash and 5% desulfurized gypsum.Wherein ingredient presses quality in Portland clinker
It includes: 3.8:218.9:45.6:31.8:661.4 that percentage composition meter, which includes: that ingredient is counted in mass ratio in Portland clinker:
33.2:5:0.23 LOSS, SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-.Ingredient is by mass percentage in flyash
It include: LOSS, SiO of 98:390:370:53.8:48.7:5.3:29.3:0.22、Al2O3、Fe2O3、CaO、MgO、SO3And
Cl-.Granulated bf slag slag powders loss on ignition is -0.67%, the middle SiO of granulated bf slag slag powders2、Al2O3、Fe2O3、CaO、
MgO、SO3And Cl-Mass ratio are as follows: 326.3:161:15.3:407.3:84.3:8:0.26.
A kind of preparation method of PSA grades of slow setting cement, takes above-mentioned Portland clinker 550kg, granulated bf slag
Slag powders 350kg, flyash 50kg, desulfurized gypsum 50kg, being placed in grinding in cement grinding mill and obtaining specific surface area is 340~400m2/
The powder of kg is PSA grades of slow setting cement.
Embodiment 4
A kind of PSA grades of slow setting cement, raw material quality percentage composition composition are as follows: 54% Portland clinker,
36% granulated bf slag slag powders, 5.5% flyash and 4.5% desulfurized gypsum.Wherein ingredient is pressed in Portland clinker
It includes: 3.8:218.9:45.6:31.8 that mass percentage meter, which includes: that ingredient is counted in mass ratio in Portland clinker:
LOSS, SiO of 661.4:33.2:5:0.232、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-.Ingredient presses quality hundred in flyash
Divide LOSS, the SiO for comparing that meter includes: 98:390:370:53.8:48.7:5.3:29.3:0.22、Al2O3、Fe2O3、CaO、MgO、SO3
And Cl-.Granulated bf slag slag powders loss on ignition is -0.67%, the middle SiO of granulated bf slag slag powders2、Al2O3、Fe2O3、
CaO、MgO、SO3And Cl-Mass ratio are as follows: 326.3:161:15.3:407.3:84.3:8:0.26.
A kind of preparation method of PSA grades of slow setting cement, takes above-mentioned Portland clinker 540kg, granulated bf slag
Slag powders 360kg, flyash 55kg, desulfurized gypsum 45kg, being placed in grinding in cement grinding mill and obtaining specific surface area is 340~400m2/
The powder of kg is PSA grades of slow setting cement.
Embodiment 5
A kind of PSA grades of slow setting cement, raw material quality percentage composition composition are as follows: 56% Portland clinker,
34% granulated bf slag slag powders, 4.5% flyash and 5.5% desulfurized gypsum.Its wherein ingredient in Portland clinker
Include: that ingredient is counted in mass ratio in Portland clinker based on mass percentage include: 3.8:218.9:45.6:31.8:
LOSS, SiO of 661.4:33.2:5:0.232、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-.Ingredient presses quality hundred in flyash
Divide LOSS, the SiO for comparing that meter includes: 98:390:370:53.8:48.7:5.3:29.3:0.22、Al2O3、Fe2O3、CaO、MgO、SO3
And Cl-.Granulated bf slag slag powders loss on ignition is -0.67%, the middle SiO of granulated bf slag slag powders2、Al2O3、Fe2O3、
CaO、MgO、SO3And Cl-Mass ratio are as follows: 326.3:161:15.3:407.3:84.3:8:0.26.
A kind of preparation method of PSA grades of slow setting cement, takes above-mentioned Portland clinker 560kg, granulated bf slag
Slag powders 340kg, flyash 45kg, desulfurized gypsum 55kg, being placed in grinding in cement grinding mill and obtaining specific surface area is 340~400m2/
The powder of kg is PSA grades of slow setting cement.
Embodiment 6
The present embodiment is substantially the same manner as Example 5, the difference is that its raw material quality percentage composition forms are as follows: 56%
Portland clinker, 34% granulated bf slag slag powders, 4.5% flyash and 5.41% desulfurized gypsum and 0.09%
Liquid molasses.
Embodiment 7
The present embodiment is substantially the same manner as Example 5, the difference is that its raw material quality percentage composition forms are as follows: 56%
Portland clinker, 34% granulated bf slag slag powders, 4.5% flyash and 5.45% desulfurized gypsum and 0.05%
Liquid molasses.
Embodiment 8
The present embodiment is substantially the same manner as Example 5, the difference is that its raw material quality percentage composition forms are as follows: 56%
Portland clinker, 34% granulated bf slag slag powders, 4.5% flyash and 5.43% desulfurized gypsum and 0.07%
Liquid molasses.
Experimental example
The slow setting cement that embodiment 1-5 is obtained is detected each by standard GB/T 175-2007 " common portland cement "
Item physicochemical properties.By data record to table 1.
The physics and chemical property for the slow setting cement that each embodiment of table 1 provides
By table 1, it can be seen that the properties of PSA grades of slow setting cement provided in an embodiment of the present invention are preferable,
Especially intensity is higher meets PSA grades, and retarding time is longer, and the presetting period is all larger than 350min, and final setting time is all larger than
400 minutes.From embodiment 3-5, it can be seen that the presetting period of Portland clinker and final setting time are longer, initial set
Time is greater than 360min, and final setting time is greater than 420min.Embodiment 6-8 comparative example 5 can be found out that embodiment 6-8's is strong
Though degree slightly worse than embodiment 5, setting time is longer than embodiment 5, it can be seen that, adding proper amount of liquid molasses can
Delay setting time under the premise of almost accomplishing not influence slow setting cement intensity.
In conclusion PSA grades of slow setting cement provided by the invention, due to using the ground granulated blast furnace slag of large dosage, then
It is participated in properly mixed flyash and desulfurized gypsum, so that PSA grades of slow setting cement obtained is mixed suitable for large volume
Solidifying soil has condensation hardening slow, and early strength is slightly lower, and later strength growth rate is high, and resistance to corrosion is strong, heat-resist, durable
Property it is good, later strength is high, the characteristics of enhancing roadbed durability.Its presetting period be 350~375 minutes, final setting time be 405~
445 minutes, and intensity is high, belongs to PSA grades.
Particularly, when its raw material include: based on mass percentage 54%~56% Portland clinker, 34%~
When 36% granulated bf slag slag powders, 4.5%~5.5% flyash and 4.5%~5.5% desulfurized gypsum, retarding time into
One step lengthens, and the presetting period is greater than 360min, and final setting time is greater than 420min.And it is further added with suitable liquid molasses
Afterwards, can accomplish to delay setting time under the premise of having little influence on slow setting cement intensity.
The preparation method of PSA grades of slow setting cement provided by the invention, it is easy to operate, intensity height can be made, delay
The cement of solidifying time length.
Concrete road provided by the invention, due to being laid with to obtain using PSA grades of slow setting cement provided by the invention,
Therefore its quality is good.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of PSA grades of slow setting cement, which is characterized in that its raw material includes: 51% based on mass percentage~
59% Portland clinker, 32%~37% granulated bf slag slag powders, 4%~6% flyash and 4%~6% desulfurization
Gypsum.
2. PSA grades of slow setting cement according to claim 1, which is characterized in that its raw material presses mass percentage
Meter includes: 54%~56% Portland clinker, 34%~36% granulated bf slag slag powders, 4.5%~5.5% flyash
And 4.5%~5.5% desulfurized gypsum.
3. PSA grades of slow setting cement according to claim 1, which is characterized in that the raw material further include quality hundred
Content is divided to be less than or equal to 0.09% liquid molasses.
4. PSA grades of slow setting cement according to claim 4, which is characterized in that the liquid molasses account for raw material matter
Measuring percentage composition is 0.05%~0.09%.
5. PSA grades of slow setting cement according to claim 1, which is characterized in that the Portland clinker presses matter
Amount than meter include: 3.5~4:218~219:45~46.5:30~33:660~663:33~33.5:4.5~5.5:0.2~
0.25 LOSS, SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-。
6. PSA grades of slow setting cement according to claim 1, which is characterized in that the flyash counts packet in mass ratio
It includes: 90~100:360~400:350~395:53~54.2:47~49.5:5~5.5:29~29.6:0.2~0.3
LOSS、SiO2、Al2O3、Fe2O3、CaO、MgO、SO3And Cl-。
7. PSA grades of slow setting cement according to claim 1, which is characterized in that the granulated bf slag slag powders
Loss on ignition is calculated as -0.7%~-0.65% by mass percentage, SiO in the granulated bf slag slag powders2、Al2O3、Fe2O3、
CaO、MgO、SO3And Cl-Mass ratio are as follows: 300~350:155~165:14~16:380~430:80~90:7.5~8.5:
0.2~0.3.
8. a kind of preparation method of PSA grades of slow setting cement, which is characterized in that including will be such as any one of claim 1-6 institute
State Portland clinker, the granulated bf slag slag powders, the flyash and the desulfurized gypsum combined grinding.
9. a kind of preparation method of PSA grades of slow setting cement, which is characterized in that including will be such as any one of claim 1-6 institute
It states Portland clinker grinding and obtains Portland clinker fine powder, the granulated bf slag slag powders grinding is granulated
Blast furnace slag slag powder and fine powder, obtains flyash fine powder for the flyash grinding, and the desulfurized gypsum grinding is obtained desulfurization stone
Cream fine powder, by the Portland clinker fine powder, the granulated bf slag slag powder and fine powder, the flyash fine powder and institute
State the mixing of desulfurized gypsum fine powder.
10. a kind of concrete road, which is characterized in that using such as the described in any item PSA grades of slow setting water of claim 1-7
PSA grades of slow setting cement pavings made from the preparation method of mud or PSA grades of slow setting cement as claimed in claim 8 or 9
If obtaining.
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| CN111253095A (en) * | 2020-03-14 | 2020-06-09 | 天瑞集团汝州水泥有限公司 | Special road retarding cement |
| CN111517683A (en) * | 2020-05-27 | 2020-08-11 | 山东永正水泥有限公司 | Cement for cast-in-place pile and preparation method thereof |
| CN111847919A (en) * | 2020-07-20 | 2020-10-30 | 娲石水泥集团有限公司 | Preparation method of high-performance cement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003953A (en) * | 2019-12-03 | 2020-04-14 | 米脂冀东水泥有限公司 | Special cement based on high-chlorine kiln dust and production method thereof |
| CN111253095A (en) * | 2020-03-14 | 2020-06-09 | 天瑞集团汝州水泥有限公司 | Special road retarding cement |
| CN111517683A (en) * | 2020-05-27 | 2020-08-11 | 山东永正水泥有限公司 | Cement for cast-in-place pile and preparation method thereof |
| CN111847919A (en) * | 2020-07-20 | 2020-10-30 | 娲石水泥集团有限公司 | Preparation method of high-performance cement |
| CN112456827A (en) * | 2020-11-30 | 2021-03-09 | 中国葛洲坝集团水泥有限公司 | Road base retarding cement and preparation method thereof |
| CN116553852A (en) * | 2023-04-10 | 2023-08-08 | 上海复洁环保科技股份有限公司 | Retarder and reinforcing agent, retarder cement for roads and preparation method of retarder and reinforcing agent |
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