CN109400086A - A kind of biological carbon cement - Google Patents
A kind of biological carbon cement Download PDFInfo
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- CN109400086A CN109400086A CN201811239722.7A CN201811239722A CN109400086A CN 109400086 A CN109400086 A CN 109400086A CN 201811239722 A CN201811239722 A CN 201811239722A CN 109400086 A CN109400086 A CN 109400086A
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- biological carbon
- cement
- biological
- carbon
- water
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/022—Carbon
-
- 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
- C04B28/08—Slag cements
Abstract
The invention discloses a kind of biological carbon cement, including biological carbon and cement, the mass ratio of the raw material of the biological carbon and cement composition is 0.5:98.5~1:99, the size of biological carbon particle is maintained within 48um~74um, the preparation method of the biological carbon includes: to crush biological carbon raw material, cross 20~30 meshes, then powder is placed in cracker, after nitrogen or argon gas replacement Treatment, keep an atmospheric pressure, it heats up to cracker, and keeps the temperature four hours in certain temperature, biological carbon then can be obtained after Temperature fall.The present invention, biological carbon cement is because the water-retaining property of biological carbon and the chemical property of homeostasis keep cement solidification more perfect, and intensity greatly promotes compared with conventional cement, and maximum can enhance 70%, cement internal structure stability and chemical anticorrosion properties have been substantially increased, cement durability is enhanced.
Description
Technical field
The present invention relates to building material technical field more particularly to a kind of biological carbon cement.
Background technique
China is large agricultural country, and stalk is a kind of very extensive wastes of crops, and stalk resource is especially abundant, accounts for world's straw
The 25% of stalk resource.In China, a large amount of stalk is placed in field and discards or directly burn, and cannot not only efficiently use, but also
Serious atmosphere pollution can also be caused, 20% CO in atmosphere2Result from rural activity.Therefore, it is abundant to develop and utilize China
The meaning of agricultural straw resource is very great.The biomass such as stalk are pyrolyzed under complete or partial anoxic, oxygen free condition, are generated
Containing carbon rich, indissoluble, property is stable, solid matter of height aromatization, referred to as biological carbon.In addition, industrial production and people
The mass energy of class life consumption makes more increasing with day for the yield of greenhouse gases.Wherein most important greenhouse gases CO2Account for about
The 60% of total greenhouse gases.It is CO since biological carbon contains the carbon solid of the stronger a large amount of aromatic ring structures of stability2Seal up for safekeeping and mention
A kind of reliable and most potential means have been supplied, and have sealed that the period is longer up for safekeeping, to reduce the carbon emission amount in atmosphere, have been made simultaneously
The a large amount of waste straws in field are rationally utilized in the case where free from environmental pollution.
Cement is that powdery hydraulicity inorganic coagulation material can harden in air or in water at slurry after adding water and stirring
In preferably harden, and can the materials such as sand, stone are cemented together securely, cement and cement-base composite material are human histories
Upper most commonly used construction material, and a kind of important resource and the basic product for influencing the national economic development, at present
Irreplaceable foundation construction material is still fallen within, and cannot be reused.Biological carbon is due to its own pore structure and absorption
Performance is chiefly used in soil improvement and water remediation, but other characteristics of biological carbon are equally applicable to the construction materials such as cement, to mention
Its high performance.The form of 80~98% one amorphous state of silicon exists in rice straw, in cracking process, the form of silicon whether there is or not
It shapes and gradually changes to crystalline state.
And it is played in the stability durability of Silicon in Cement and Si oxide in hydrated cementitious and after hardening vital
Effect.The water-retaining property of biological carbon not only reduces the content of Free water in cement when mixing, and be cement conservation when inside
Solidification provides moisture, promotes cement internal stiffening.In addition, the multi-pore structure and surface micropore of biological carbon have blocked heat
Transmitting, so that construction material preferably be made to keep the temperature, is heat-insulated.And biological carbon chemical property is stablized, and inside configuration carbonization is reduced
Degree reduces the destruction of cement internal chemical, improves cement durability.The a large amount of CO that cement slurry generates when calcining2, increase
The discharge amount for having added carbon, exacerbates global warming.And with the raising of people's quality of life and China's building trade
Development, conventional cement can no longer meet some building structure and environmentally protective requirement.Therefore, cement is reduced or substitutes to use
Amount, promotion strength of cement are significant to China's building field or even national economy.Therefore, biological carbon is used in conjunction with cement
Be as construction material it is very potential, serve not only as a kind of carbon sequestration means and reduce carbon emission amount in atmosphere, and improve
Cement property adapts to the requirement of the development of modern architecture materials industry.
Therefore, we have proposed a kind of biological carbon cement for solving the above problems.
Summary of the invention
The purpose of the present invention is to solve conventional cement exists in the prior art to can no longer meet some building structure
The shortcomings that with environmentally protective requirement, and a kind of biological carbon cement proposed.
A kind of biological carbon cement, including biological carbon and cement, the biological carbon and cement raw material composition mass ratio be
The size of 0.5:98.5~1:99, biological carbon particle are 48um~74um, and the preparation method of the biological carbon includes: by biological carbon
Raw material crushes, and then powder is placed in cracker, after nitrogen or argon gas replacement Treatment, under normal pressure, fills to cracking
It sets and heats up, and keep the temperature four hours after increasing the temperature to 300 DEG C~700 DEG C, biology then can be obtained after Temperature fall
Carbon；
The preparation method of the biological carbon cement includes: biological carbon and cement to be weighed raw material according to mass ratio, and be sufficiently mixed
After obtain biological carbon cement；
The use process of the biological carbon cement is: biological carbon cement, industry water and aggregate proportionally being mixed, are uniformly mixed
After be put into extrusion molding in extruder, used after being conserved afterwards to it for 24 hours.
Preferably, the biological carbon raw material includes corn stover, rice straw and wheat stalk, and corn stover, rice
Stalk and wheat stalk are Silicon-rich organic waste.
Preferably, it is 0.2g/cm that the fundamental property of the biological carbon, which includes: the density of biological carbon,3~0.5g/cm3, biology
The percentage composition of element silicon is 20%~60% in carbon, and the percentage composition of carbon is 40%~70% in biological carbon, oxygen in biological carbon
The percentage composition of element is 30%~60%, and the percentage composition of protium is 0.6%~4% in biological carbon, other metals in biological carbon
The percentage composition of element is 2%~40%.
Preferably, it is 1.7g/cm that the fundamental property of the biological carbon cement, which includes: the density of biological carbon cement,3~1.9g/
cm3, the specific area of biological carbon cement is 200m2/ g~300m2/ g, the presetting period of biological carbon cement are not less than 260min, biology
The final setting time of carbon cement is not more than 480min.
Preferably, the industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water quality
Standard.
Preferably, the maintenance when condition of the maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360
Hour.
The beneficial effects of the present invention are:
1, of the invention, biological carbon cement is because the water-retaining property of biological carbon and the chemical property of homeostasis keep cement solidification completeer
Kind, intensity, which greatly promotes maximum, compared with conventional cement can enhance 70%, reduce the carbonization of cement internal structure and chemical attack,
Enhance cement durability.
2, of the invention, itself pore structure and surface micropore of biological carbon make biological carbon cement block part heat
Transmitting, reduces thermal coefficient, makes biological carbon cement as construction material more insulation.
3, of the invention, biological carbon has biggish specific surface area, and the weight of structure itself is alleviated with biological carbon substitution cement,
Optimize building structure.
4, of the invention, biological carbon cement reduces the dosage of cement, the CO generated when to reducing manufacture of cement2Row
It puts, meanwhile, so that straw is turned waste into wealth, provide a kind of carbon sequestration method that period is long, stability is high, arranges greenhouse gases are reduced
It puts to warm with mitigation of global climate and has certain effect.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment one: a kind of biological carbon cement, the preparation method of biological carbon include: that corn stover is cleaned and used
It is 20 mesh powders that pulverizer, which be ground into mesh number, powder is put into cracking apparatus, and cracking apparatus is sealed, to splitting
It is passed through nitrogen or argon gas in solution equipment, air in equipment cracking apparatus is replaced, atmospheric cracking is then carried out, until heating
To after 600 DEG C, temperature 4h is kept, and biological carbon can be obtained after being naturally cooling to room temperature；The preparation method packet of biological carbon cement
Include: selecting the biological carbon that cracking temperature is 400 DEG C, (density of biological carbon is 0.4g/cm3, the percentage of element silicon contains in biological carbon
Amount is 25%, and the percentage composition of carbon is 40% in biological carbon, and the percentage composition of oxygen element is 30% in biological carbon, in biological carbon
Protium content within 2%~3%, in biological carbon metal element content summation 3% or so), and by biological carbon diameter
Be maintained within 48um~74um, and by biological carbon and cement by obtained after being sufficiently mixed biological carbon cement (biological carbon cement
Density is 1.8cm3~2 g/cm3, the specific area of biological carbon cement is in 200m2The presetting period of/g or so, biological carbon cement is not small
It is not more than 480min in the final setting time of 260min, biological carbon cement)；The use process of the biological carbon cement is: will be biological
Carbon, cement, industry water and aggregate mix (wherein cement 460g, biological carbon 4.65g, industry water 200g, aggregate 3000g, the ratio of mud
0.43) it, is put into extrusion molding in extruder after mixing, is used after being conserved afterwards to it for 24 hours.
Wherein, industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water standard；
The maintenance when condition of maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360 hours, the cement used is river
42.5 portland slag cement of Taihang Mountain of the Handan City Bei Sheng Fengfeng Mining Area production.
Embodiment two: a kind of biological carbon cement, the preparation method of biological carbon include: that corn stover is cleaned and used
It is 20 mesh powders that pulverizer, which be ground into mesh number, powder is put into cracking apparatus, and cracking apparatus is sealed, to splitting
It is passed through nitrogen or argon gas in solution equipment, air in equipment cracking apparatus is replaced, atmospheric cracking is then carried out, until heating
After 600 DEG C, temperature 4h is kept, and biological carbon can be obtained after being naturally cooling to room temperature；The preparation method of biological carbon cement includes:
Selecting the biological carbon that cracking temperature is 500 DEG C, (density of biological carbon is 0.4g/cm3, the percentage composition of element silicon is in biological carbon
25%, the percentage composition of carbon is 40% in biological carbon, and the percentage composition of oxygen element is 30% in biological carbon, hydrogen member in biological carbon
The percentage composition of element is 2%~3%, and the percentage composition of other metallic elements is 3% in biological carbon.), and biological carbon is ground into directly
Particle of the diameter size within 48um~74um, and biological carbon cement (biological carbon is obtained after biological carbon and cement are sufficiently mixed
The density of cement is 1.8cm3~2 g/cm3, the specific area of biological carbon cement is maintained at 200m2/ g or so, biological carbon cement just
The solidifying time is not less than 260min, and the final setting time of biological carbon cement is not more than 480min)；The use process of the biological carbon cement
It is: biological carbon, cement, industry water and aggregate is mixed into (wherein cement 460g, biological carbon 4.65g, industry water 200g, aggregate
3000g, the ratio of mud 0.43), it is put into extrusion molding in extruder after mixing, is used after being conserved afterwards to it for 24 hours.
Wherein, industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water standard；
The maintenance when condition of maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360 hours, the cement used is river
42.5 portland slag cement of Taihang Mountain of the Handan City Bei Sheng Fengfeng Mining Area production.
Embodiment three: a kind of biological carbon cement, the preparation method of biological carbon include: that corn stover is cleaned and used
It is 20 mesh powders that pulverizer, which be ground into mesh number, powder is put into cracking apparatus, and cracking apparatus is sealed, to splitting
It is passed through nitrogen or argon gas in solution equipment, air in equipment cracking apparatus is replaced, atmospheric cracking is then carried out, until heating
To assigned temperature, temperature 4h is kept, and biological carbon can be obtained after being naturally cooling to room temperature；The preparation method of biological carbon cement
It include: to select the biological carbon that cracking temperature is 600 DEG C (density of biological carbon is 0.4g/cm3, the percentage of element silicon in biological carbon
Content is 25%, and the percentage composition of carbon is 40% in biological carbon, and the percentage composition of oxygen element is 30% in biological carbon, biological carbon
Middle protium content is within 2%~3%, other metal element contents are within 3% in biological carbon, and by biological carbon particle diameter
Be maintained within 48um~74um, and obtained after biological carbon and cement are sufficiently mixed biological carbon cement (biological carbon cement it is close
Degree is 1.8 g/cm3~2 g/cm3, the specific area of biological carbon cement is maintained at 200m2/ g or so, when the initial set of biological carbon cement
Between be not less than 260min, the final setting time of biological carbon cement is not more than 480min)；The use process of the biological carbon cement is:
By biological carbon, cement, industry water and aggregate mix (wherein cement 460g, biological carbon 4.65g, industry water 200g, aggregate 3000g,
The ratio of mud 0.43), it is put into extrusion molding in extruder after mixing, is used after being conserved afterwards to it for 24 hours.
Wherein, industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water standard；
The maintenance when condition of maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360 hours, the cement used is river
42.5 portland slag cement of Taihang Mountain of the Handan City Bei Sheng Fengfeng Mining Area production.
Example IV: a kind of biological carbon cement, the preparation method of biological carbon include: that corn stover is cleaned and used
It is 20 mesh powders that pulverizer, which be ground into mesh number, powder is put into cracking apparatus, and cracking apparatus is sealed, to splitting
It is passed through nitrogen or argon gas in solution equipment, air in equipment cracking apparatus is replaced, atmospheric cracking is then carried out, until heating
To assigned temperature, temperature 4h is kept, and biological carbon can be obtained after being naturally cooling to room temperature；The preparation method of biological carbon cement
It include: to select the biological carbon that cracking temperature is 700 DEG C (density of biological carbon is 0.4g/cm3, the percentage of element silicon in biological carbon
Content is 25%, and the percentage composition of carbon is 40% in biological carbon, and the percentage composition of oxygen element is 30% in biological carbon, biological carbon
Middle hydrogen content is within 1%~2%, other tenors are within 3% in biological carbon.), and biological carbon particle is maintained at
Biological carbon cement is obtained within 48um~74um, and after biological carbon and cement are sufficiently mixed, and (density of biological carbon cement is 1.8
g/cm3~2 g/cm3, the specific area of biological carbon cement is maintained at 200m2The presetting period of/g or so, biological carbon cement are not less than
The final setting time of 260min, biological carbon cement are not more than 480min)；The use process of the biological carbon cement is: by biological carbon,
Cement, industry water and aggregate mix (wherein cement 460g, biological carbon 4.65g, industry water 200g, aggregate 3000g, the ratio of mud
0.43) it, is put into extrusion molding in extruder after mixing, is used after being conserved afterwards to it for 24 hours.
Wherein, industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water standard；
The maintenance when condition of maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360 hours, the cement used is river
42.5 portland slag cement of Taihang Mountain of the Handan City Bei Sheng Fengfeng Mining Area production.
Sample for reference: the use process of the cement is: by cement, industry water and aggregate mix (wherein, cement 460g,
Biological carbon 4.65g, industry water 200g, aggregate 3000g, the ratio of mud 0.43), it is put into extrusion molding in extruder after mixing,
It is used after being conserved afterwards to it for 24 hours.
Wherein, industry water is surface water three classes water quality as defined in national standard GB3838~2002 or is better than three classes water standard；
The maintenance when condition of maintenance is maintenance under water or is repeatedly long, and curing time is no less than 360 hours, the cement used is river
42.5 portland slag cement of Taihang Mountain of the Handan City Bei Sheng Fengfeng Mining Area production
It is anti-in standard 28t to biological carbon cement made of embodiment one, embodiment two, embodiment three and example IV and comparative example
Compressive Strength is tested, and test result is as follows shown in table:
As can be seen from the above table: different cracking temperatures have the intensity of biological carbon cement different degrees of promotion, and are splitting
Intensity has been respectively increased 61%, 52.08%, 60.32%, 79.90% when solution temperature is 400 DEG C, 500 DEG C, 600 DEG C, 700 DEG C, thus
It can be seen that the biological carbon cement of difference cracking temperature in terms of compression strength with conventional cement compared with having very greatly when substitution is than for 1%
Potentiality.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of biological carbon cement, including biological carbon and cement, it is characterised in that the raw material of the biological carbon and cement composition
Mass ratio is 0.5:98.5~1:99, and the size of biological carbon particle is 48um~74um, and the preparation method of the biological carbon includes:
Biological carbon raw material is crushed, then powder is placed in cracker, after nitrogen or argon gas replacement Treatment, under normal pressure,
It heats up to cracker, and keeps the temperature four hours after increasing the temperature to 300 DEG C~700 DEG C, then after Temperature fall
Obtain biological carbon；
The preparation method of the biological carbon cement includes: biological carbon and cement to be weighed raw material according to mass ratio, and be sufficiently mixed
After obtain biological carbon cement；
The use process of the biological carbon cement is: biological carbon cement, industry water and aggregate proportionally being mixed, are uniformly mixed
After be put into extrusion molding in extruder, used after being conserved afterwards to it for 24 hours.
2. a kind of biological carbon cement according to claim 1, which is characterized in that the biology carbon raw material includes corn stalk
Stalk, rice straw and wheat stalk, and corn stover, rice straw and wheat stalk are Silicon-rich organic waste.
3. a kind of biological carbon cement according to claim 1, which is characterized in that the fundamental property of the biological carbon includes:
The density of biological carbon is 0.2g/cm3~0.5g/cm3, the percentage composition of element silicon is 20%~60% in biological carbon, carbon in biological carbon
The percentage composition of element is 40%~70%, and the percentage composition of oxygen element is 30%~60% in biological carbon, protium in biological carbon
Percentage composition is 0.6%~4%, and the percentage composition of other metallic elements is 2%~40% in biological carbon.
4. a kind of biological carbon cement according to claim 1, which is characterized in that the fundamental property packet of the biological carbon cement
Include: the density of biological carbon cement is 1.7g/cm3~1.9g/cm3, the specific area of biological carbon cement is 200m2/ g~300m2/ g,
The presetting period of biological carbon cement is not less than 260min, and the final setting time of biological carbon cement is not more than 480min.
5. a kind of biological carbon cement according to claim 1, which is characterized in that the industry water be national standard GB3838~
Surface water three classes water quality as defined in 2002 is better than three classes water standard.
6. a kind of biological carbon cement according to claim 1, which is characterized in that the condition of the maintenance is to conserve under water
Or it is conserved when multiple long, and curing time is no less than 360 hours.
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Cited By (4)
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| CN113956893A (en) * | 2021-10-13 | 2022-01-21 | 昆明理工大学 | Preparation method and application of biomass carbon rod |
| CN114804785A (en) * | 2022-06-06 | 2022-07-29 | 哈尔滨工业大学 | Design method for efficient carbon fixation cement-based material self-layering structure |
| CN114953099A (en) * | 2022-06-06 | 2022-08-30 | 哈尔滨工业大学 | Forming method for realizing independent regulation and control of cement-based material transmission and mechanical property |
| RU2804035C1 (en) * | 2023-04-12 | 2023-09-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) | Concrete mix |
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Application publication date: 20190301 |