CN108892464A - A kind of environment-friendly type cementitious material and preparation method thereof - Google Patents
A kind of environment-friendly type cementitious material and preparation method thereof Download PDFInfo
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- CN108892464A CN108892464A CN201810995544.4A CN201810995544A CN108892464A CN 108892464 A CN108892464 A CN 108892464A CN 201810995544 A CN201810995544 A CN 201810995544A CN 108892464 A CN108892464 A CN 108892464A
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- cementitious material
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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
- C04B28/14—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 calcium sulfate 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of environment-friendly type cementitious materials and preparation method thereof, belong to field of cementing material technology.Mixed powder is made by the two is levigate using converter slag, blast-furnace cinder as raw material, using the method for step mix grinding in the present invention, prepares superfine powder, closely knit cementitious material hardenite structure, so that cementitious material intensity, impermeability increase substantially；The present invention passes through the addition plaster of paris, polymeric aluminum, the additives such as calcium chloride, accelerate gypsum to the erosion process of slag, slag is promoted to cooperate with aquation with gypsum, reduce slurry porosity, improve slurry consistency, interfacial adhesion ability is improved simultaneously, so that cementitious material intensity is high, first final setting time is short, it is fast with gelation rate, compression strength is high, cubical expansivity is low, the advantages that stability is high, it realizes waste utilization and solves steel slag, slag is to make a low multiple use, pollute the status of environment, solves the shortage problem of urban construction new material again, it is with a wide range of applications.
Description
Technical field
The present invention relates to a kind of environment-friendly type cementitious materials and preparation method thereof, belong to field of cementing material technology.
Background technique
The it is proposed of environment-friendly type cementitious material is lacked for conventional cement resource and energy consumption are big, environmental pollution is serious etc.
Point.As a kind of novel cementitious material, environment-friendly type cementitious material has outstanding advantages of function admirable, economic and environment-friendly.It is
Using largely having pozzolanic activity, hydraulicity activity and the active industrial residue of air-setting, replace part in portland cement
Or most of clinker, and suitable additive is added, it is mixed eventually by specific combination process.
The industrial residues such as flyash, granulated blast-furnace slag, steel slag, phosphorus slag, cupola furnace be clear can be used as mixing material.Flyash
It is the waste residue of coal-burning power plant's discharge, with the rapid development of power industry, the discharge amount of flyash increasingly increases.Slag is blast furnace
The waste residue generated in ironmaking processes, every annual emissions are more than 60,000,000 tons.A large amount of discharges of flyash, slag, consumption are a large amount of
Human and material resources, and immense pressure is brought to environment.And flyash, slag introduction manufacture of cement, huge economic effect can be generated
Benefit and environmental benefit.
Flyash is subjected to microwave irradiation, is mixed with clinker, big miserable amount flyash environment-friendly type gelling can be prepared
Material.Metakaolin and exciting agent are introduced in slag cements, and the volume of slag in slag cements can be improved.Two kinds of environment-friendly type glue
The minor official amount of mixing material breaches the pertinent regulations of national standard in gel material, it is meant that the utilization rate of industrial residue is obtained into one
Walk is improved, and is of great practical significance to manufacture of cement.
In recent decades, key industry developed countries and regions are to environment-friendly type cementitious material（Low-carbon cement, eco-cement,
Green cement etc.）Research pay much attention to, oneself is constructed and put into operation in some developed countries and regions for numerous eco-cement factories, can dissolve
Various industrial residues and municipal refuse, comprehensive utilization ratio reach 95%~100%.And most developing countries, environment-friendly type gelling
The development and production of material are still in the extensive and poly-talented stage.
Summary of the invention
The technical problems to be solved by the invention：Slow, curing efficiency unstability, volume for cementitious material gelation rate
Big problem is expanded, a kind of environment-friendly type cementitious material and preparation method thereof is provided.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：
The cementitious material includes following weight parts raw material：3~4 parts of converter slags, 2.5~3.0 parts of blast-furnace cinders, 0.5~1.0
Part ordinary portland cement, 0.1~0.2 part of polymeric aluminum, 0.05~0.06 part of calcium chloride, 3~5 parts of plaster of paris, 3~4kg alkali swash
Send out agent.
The converter slag is the converter slag powder for crushing, sieving with 100 mesh sieve after iron removal by magnetic separation.
Partial size≤1mm of the blast-furnace cinder.
The alkali-activator is the water glass for being 20~30% through the solid content that sodium hydroxide solution adjusting modulus is 1.2~1.5
Glass.
A kind of preparation method of environment-friendly type cementitious material, the specific steps are：
（1）It takes converter slag to be added in pulverizer to crush, particle sieves with 100 mesh sieve after iron removal by magnetic separation, by the converter steel after sieving
Ground-slag end is dry to constant weight, must pre-process steel slag powder；
（2）Take solid content be 20~30% waterglass, with mass fraction be 20% sodium hydroxide solution adjust modulus of water glass be 1.2
~1.5, obtain alkali-activator；
（3）It takes converter slag to be fitted into ball mill and is milled to specific surface area as 300~400m2/kg；
（4）Blast-furnace cinder, ordinary portland cement are added, being milled to specific surface area is 400~500m2/kg；
（5）Polymeric aluminum, calcium chloride, the plaster of paris are added, being milled to specific surface area is 500~700m2/kg；
（6）It adds alkali-activator and mixes 5~8min, obtain environment-friendly type cementitious material.
The present invention is compared with other methods, and advantageous effects are：
（1）Mixed powder is made by the two is levigate using converter slag, blast-furnace cinder as raw material, using the method for step mix grinding in the present invention
Material, prepares superfine powder, cementitious material interface zone is attached in cement hydration process, be filled into water by micro aggregate effect
In a large amount of gaps that change process is formed, closely knit cementitious material hardenite structure, so that cementitious material intensity, impervious big
Amplitude improves；
（2）The present invention is accelerated gypsum to the erosion process of slag, is promoted by additives such as the addition plaster of paris, polymeric aluminum, calcium chloride
Aquation is cooperateed with gypsum into slag, reduces slurry porosity, improves slurry consistency, while improving interfacial adhesion ability, so that
Cementitious material intensity is high, and first final setting time is short, has gelation rate is fast, compression strength is high, cubical expansivity is low, stability is high etc.
Advantage realizes waste utilization and solves steel slag, slag to make a low multiple use, pollute the status of environment, and solves city
City builds the shortage problem of new material, is with a wide range of applications.
Specific embodiment
40~50kg converter slag is taken, is added in pulverizer and crushes, particle sieves with 100 mesh sieve after iron removal by magnetic separation, will be sieved
Converter slag powder afterwards is placed in drying box, is dried at 105~110 DEG C to constant weight, must be pre-processed steel slag powder, take 5~
6kg solid content be 20~30% waterglass, with mass fraction be 20% sodium hydroxide solution adjust modulus of water glass be 1.2~1.5,
Alkali-activator is obtained, takes 3~4kg converter slag to be fitted into ball mill and is milled to specific surface area as 300~400m2/ kg, adds
2.5~3.0kg blast-furnace cinder, 0.5~1.0kg ordinary portland cement continue to be milled to specific surface area to be 400~500m2/
Kg adds 0.1~0.2kg polymeric aluminum, and 0.05~0.06kg calcium chloride, 3~5kg plaster of paris, being milled to specific surface area is 500
~700m23~4kg alkali-activator is added in/kg, mixes 5~8min, obtains environment-friendly type cementitious material.
Example 1
40kg converter slag is taken, is added in pulverizer and crushes, particle sieves with 100 mesh sieve after iron removal by magnetic separation, by the converter after sieving
Steel slag powder is placed in drying box, is dried at 105 DEG C to constant weight, must be pre-processed steel slag powder, and taking 5kg solid content is 20% water
It is 1.2 that glass, which is 20% sodium hydroxide solution adjusting modulus of water glass with mass fraction, obtains alkali-activator, takes 3kg converter slag
Being fitted into ball mill and being milled to specific surface area is 300m2/ kg, adds 2.5kg blast-furnace cinder, 0.5kg ordinary portland cement,
Continue to be milled to specific surface area to be 400m2/ kg, adds 0.1kg polymeric aluminum, 0.05kg calcium chloride, and the 3kg plaster of paris is milled to
Specific surface area is 500m23kg alkali-activator is added in/kg, mixes 5min, obtains environment-friendly type cementitious material.
Example 2
45kg converter slag is taken, is added in pulverizer and crushes, particle sieves with 100 mesh sieve after iron removal by magnetic separation, by the converter after sieving
Steel slag powder is placed in drying box, is dried at 108 DEG C to constant weight, must be pre-processed steel slag powder, and taking 5kg solid content is 25% water
It is 1.3 that glass, which is 20% sodium hydroxide solution adjusting modulus of water glass with mass fraction, obtains alkali-activator, takes 3kg converter slag
Being fitted into ball mill and being milled to specific surface area is 350m2/ kg, adds 2.8kg blast-furnace cinder, 0.8kg ordinary portland cement,
Continue to be milled to specific surface area to be 450m2/ kg, adds 0.1kg polymeric aluminum, 0.05kg calcium chloride, and the 3kg plaster of paris is milled to
Specific surface area is 600m23kg alkali-activator is added in/kg, mixes 6min, obtains environment-friendly type cementitious material.
Example 3
50kg converter slag is taken, is added in pulverizer and crushes, particle sieves with 100 mesh sieve after iron removal by magnetic separation, by the converter after sieving
Steel slag powder is placed in drying box, is dried at 110 DEG C to constant weight, must be pre-processed steel slag powder, and taking 6kg solid content is 30% water
It is 1.5 that glass, which is 20% sodium hydroxide solution adjusting modulus of water glass with mass fraction, obtains alkali-activator, takes 4kg converter slag
Being fitted into ball mill and being milled to specific surface area is 400m2/ kg, adds 3.0kg blast-furnace cinder, 1.0kg ordinary portland cement,
Continue to be milled to specific surface area to be 500m2/ kg, adds 0.2kg polymeric aluminum, 0.06kg calcium chloride, and the 5kg plaster of paris is milled to
Specific surface area is 700m24kg alkali-activator is added in/kg, mixes 8min, obtains environment-friendly type cementitious material.
Reference examples：The environment-friendly type cementitious material of Dongguan company production.
The environment-friendly type cementitious material that example and reference examples are prepared is detected, specific detection is as follows：
Consumptive use of water normal consistence and setting time：According to GB/T1346-2001《Cement normal consistency water consumption, setting time, peace
Qualitative reaction method》It is tested, the presetting period of the environment-friendly type cementitious material of main test preparation and final setting time.
Strength of cement mortar：According to GB/T17671-2005《Test method for strength of hydraulic cement mortar》It is tested, it is main to survey
Manufacture experimently 3 days, 28 days intensity of the glue sand test block of standby environment-friendly type cementitious material.
Specific test result such as table 1.
1 performance characterization contrast table of table
As shown in Table 1, environment-friendly type cementitious material prepared by the present invention has good compression strength and setting time.
Claims (5)
1. a kind of environment-friendly type cementitious material, which is characterized in that the cementitious material includes following weight parts raw material：3~4 parts of converters
Steel slag, 2.5~3.0 parts of blast-furnace cinders, 0.5~1.0 part of ordinary portland cement, 0.1~0.2 part of polymeric aluminum, 0.05~0.06
Part calcium chloride, 3~5 parts of plaster of paris, 3~4kg alkali-activator.
2. a kind of environment-friendly type cementitious material as described in claim 1, which is characterized in that the converter slag is crushing, magnetic separation
Except the converter slag powder sieved with 100 mesh sieve after iron.
3. a kind of environment-friendly type cementitious material as described in claim 1, which is characterized in that partial size≤1mm of the blast-furnace cinder.
4. a kind of environment-friendly type cementitious material as described in claim 1, which is characterized in that the alkali-activator is through sodium hydroxide
Solution adjusts the waterglass that the solid content that modulus is 1.2~1.5 is 20~30%.
5. a kind of preparation method of environment-friendly type cementitious material as described in Claims 1 to 4 any one, which is characterized in that tool
Body step is：
（1）It takes converter slag to be added in pulverizer to crush, particle sieves with 100 mesh sieve after iron removal by magnetic separation, by the converter steel after sieving
Ground-slag end is dry to constant weight, must pre-process steel slag powder；
（2）Take solid content be 20~30% waterglass, with mass fraction be 20% sodium hydroxide solution adjust modulus of water glass be 1.2
~1.5, obtain alkali-activator；
（3）It takes converter slag to be fitted into ball mill and is milled to specific surface area as 300~400m2/kg；
（4）Blast-furnace cinder, ordinary portland cement are added, being milled to specific surface area is 400~500m2/kg；
（5）Polymeric aluminum, calcium chloride, the plaster of paris are added, being milled to specific surface area is 500~700m2/kg；
（6）It adds alkali-activator and mixes 5~8min, obtain environment-friendly type cementitious material.
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| CN117550867A (en) * | 2024-01-10 | 2024-02-13 | 石家庄铁道大学 | High-strength high-toughness steel slag-based cementing material and preparation method thereof |
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