CN107188478A - A kind of charcoal concrete - Google Patents
A kind of charcoal concrete Download PDFInfo
- Publication number
- CN107188478A CN107188478A CN201710555528.9A CN201710555528A CN107188478A CN 107188478 A CN107188478 A CN 107188478A CN 201710555528 A CN201710555528 A CN 201710555528A CN 107188478 A CN107188478 A CN 107188478A
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- Prior art keywords
- concrete
- charcoal
- cement
- quality
- safekeeping
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- 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.)
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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
- 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
-
- 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
Abstract
The invention discloses a kind of charcoal concrete, it is characterised in that：Described coagulation local soil type is into material quality ratio：Cement：Sand：Building stones：Water=1：1.00‑3.16：1.00‑4.36：0.40 0.60, account for cement quality according to charcoal quality>The quality of 0% 50% cement.Charcoal concrete has the toughness and hardness higher than normal concrete, because the intensity and toughness of enhancing material are capable of in the different arrangements of carbon element, such as diamond, charcoal concrete also has smaller slump, therefore the engineering property and workability of normal concrete can be lifted, the economic attribution of concrete is maintained or lifted.On the other hand, charcoal concrete can seal carbon up for safekeeping, production cement is discharged carbon dioxide, exist by charcoal permanent envelope in concrete, and this has very big ecological, environmental protective value.Charcoal concrete seals carbon up for safekeeping and belongs to ecological one kind sealed up for safekeeping, and with existing Plugging Technology Applied ratio, simple to operate, cost is low, seals the time up for safekeeping up to thousands of years.
Description
Technical field
The invention belongs to ecological engineering of environment field, and in particular to a kind of composition of raw materials of charcoal concrete, feed stock
Matter and manufacturing process.
Background technology
Charcoal be agriculture and forestry organic waste material under the conditions of oxygen supply is inadequate by low temperature (<700 DEG C) thermal cracking and formed
A class there is rock-steady structure, the carbon-rich solids compound of height aromaticity.The source of charcoal is quite varied, can be derived from agriculture
Woods discarded object.Agriculture and forestry organic waste material is used for fuel, animal feed, the filler of brewing fermentation and field fertilizer except a few part
Outside, it is most of directly to discard or field burning, greatly harm is caused to environment security.Concrete is that the present age is main
One of civil engineering material, it is that by binder materials, aggregate, water etc. are prepared by a certain percentage, through uniform stirring, it is closely knit into
Type, conserves a kind of artificial stone material of hardening.Due to the construction of urbanization, traffic infrastructure and waterpower infrastructure, mix
Solidifying soil has been the building body for the maximum scale of construction manually built on the earth.Concrete has important meaning to socio-economic development
Justice, its society and economic implications are irreplaceable.
However, production concrete needs a large amount of cement, production cement needs to discharge substantial amounts of carbon dioxide, causes greenhouse to be imitated
It should aggravate.And production concrete, along with a variety of environmental problems, such as tropical island effect, moisture permeable decline, creatures live ring
Border destruction, soil erosion etc..With the raising of living standards of the people and social environment consciousness, exploitation environmental type concrete tool
There is important Significance for Environment.
The carbon-sequestrating technique that reply greenhouse effects are used both at home and abroad at present has：Geological storage, ocean are sealed up for safekeeping, ore is carbonized,
Industrial utilization, ecology are sealed up for safekeeping.Geological storage is entered using the principle of the gas such as geological storage natural gas in similar nature to carbon
Row is sealed up for safekeeping, seals potentiality up for safekeeping greatly, is generally considered the mode of following main flow, but this engineering amount is than larger, technical requirements height,
Later maintenance has certain risk.It is to be transported to seal ground up for safekeeping by offshore pipeline or steamer that ocean, which is sealed up for safekeeping, then through too high
Pressure is injected into a kind of Plugging Technology Applied in ocean, and the amount of sealing up for safekeeping is big, but to be related to Technological Economy, ambient influnence etc. a series of multiple for the technology
Miscellaneous the problem of, there is to be solved, therefore is still in the exploratory stage at present.Ore carbonization is reacted life using carbon and metal oxide
Into stable carbonate, so that carbon permanently be solidified, this technology will increase reaction rate, consume energy very much, therefore should
Technology development potentiality is simultaneously pessimistic.Industrial utilization is the Plugging Technology Applied that various carbon containing chemicals are produced using carbon as form of bio-carrier,
But its is inefficient, and its to seal the time up for safekeeping shorter.Ecology seal up for safekeeping be it is environmentally friendly seal up for safekeeping, be important carbon sequestration skill
Carbon dioxide, using in farmland charcoal improvement soil environment are fixed in art, including afforestation, while also charcoal is sealed up for safekeeping in soil
In.It is that a kind of the inexpensive of convenient operation seals mode up for safekeeping that the ecology of carbon, which is sealed up for safekeeping,.But, sealed up for safekeeping by the ecology of afforestation,
Cycle is long；Charcoal applies farmland, and amount of application crosses conference influence farming.
The content of the invention
The technical problem to be solved in the present invention is：For deficiency of the prior art, it is an object of the invention to provide one kind
Concrete performance can be improved, while having the concrete building material of environment-friendly function.
The technical scheme is that：A kind of charcoal concrete, described coagulation local soil type is into material quality ratio：Water
Mud：Sand：Building stones：Water=1：1.00-3.16：1.00-4.36：0.40-0.60, cement quality is accounted for according to charcoal quality
The quality of 0.01%-30% cement.
Described coagulation local soil type is into material quality ratio：Cement：Sand：Building stones：Water=1：2.00-3.16：3.00-4.36：
0.50-0.60, the quality that cement quality 1%-30% replaces cement is accounted for according to charcoal quality.
The fundamental property of described charcoal such as table 1 below：
The fundamental property of described cement such as table 2 below：
Described sand and the property of rubble such as table 3 below：
Described water is drinking water.
A kind of preparation method of charcoal concrete, using cement mixing equipment making concrete, by biological powdered carbon, sand,
Building stones, cement and water same time are sufficiently mixed, and are stirred, wherein mixing time is longer than normal concrete mixing time
5-10%.
Beneficial effects of the present invention：The charcoal concrete is aiming at irreplaceability in socio-economic development and ring
The invention of the great demand of ecological functions is protected, one side charcoal concrete has the toughness higher than normal concrete and hard
Degree, because it was found from structural chemistry is theoretical, the different arrangements of carbon element can change the intensity and toughness with enhancing material, just like
Diamond, the blending of charcoal changes the microstructure of mixed mud, changes the intensity and toughness of mixed mud；Charcoal concrete
Also there is smaller slump, therefore the engineering property and workability of normal concrete can be lifted, maintain or lifting coagulation
The economic attribution of soil.On the other hand, charcoal concrete can seal carbon up for safekeeping, production cement is discharged carbon dioxide, pass through charcoal
Permanent envelope is present in concrete, and this has very big ecological, environmental protective value.Charcoal concrete seals carbon up for safekeeping and belongs to what ecology was sealed up for safekeeping
One kind, with existing Plugging Technology Applied ratio, simple to operate, cost is low.Due to the general weathering of mixed mud completely need 500 years with
On, so sealing the time up for safekeeping up to 500 years by mixed mud charcoal.
In addition, charcoal concrete makes concrete be provided with vital signs due to the incorporation of charcoal, such as more porosities,
Permeability, biological attachment capability improving makes concrete have breathing；Charcoal concrete heat capacity increases, to mitigating heat island effect
There should be certain effect.Therefore, charcoal concrete has environmental protection characteristic.
After standard curing 28t, it is to have significantly that the charcoal of 1% level, which substitutes expression of the cement mixing content to the intensity of concrete,
Enhancing.
As into concrete, charcoal substitutes the increase of cement mixing content, charcoal concrete slump and density are in reduction
Trend, and rate of water absorption gradually increases.
Charcoal carbon concrete seals the value assessment of carbon up for safekeeping：
Report according to statistics, Chinese existing building area is up to 5.6 × 1010m2, newly-increased construction area is 2 × 10 every year9m2, account for
The world increases more than half of construction area newly.All these buildings are most of to be built with mixed mud, 95% category highly energy-consuming building.
There are some researches show every square metre of standard forest can be sealed up for safekeeping with sequestration of carbon dioxide about 1.6kg, equivalent charcoal daily
About 0.44kg, calculated, can seal 160kg or so carbon up for safekeeping for 1 year by 365 days.In architectural engineering, unit construction area concrete
Consumption average value be 0.3-0.36m3·m-2.By conversion, consumption in architectural engineering of the concrete of different intensity grades,
Whole nation building carbon sequestration amount, building carbon sequestration are converted into standard area of woods and are shown in Table 7.
The replacement volume of charcoal is converted to after carbon sequestration amount, is built meeting strength grade of concrete design requirement and meeting
Build under the conditions of engineering construction, the charcoal concrete of different intensity grades is built in the newly-increased groups of building in the whole nation with existing highly energy-consuming
Build in transformation, the contribution amount to carbon sequestration is different, the standard area of woods of being converted into is also different therewith, with reference to table 5：
When charcoal substitutes volume≤30%, concrete strength >=20.0MPa meets C20 strength grade construction requirements,
Now the amount of sealing up for safekeeping of carbon reaches 7.50 × 10 in newly-increased building9Kg, in existing highly energy-consuming building renovation up to 2.03 ×
1011Kg, the standard area of woods of being converted into is respectively 4.69 × 107m2、1.27×109m2；
When charcoal substitutes volume≤25%, concrete strength >=25.0MPa meets C25 strength grade construction requirements,
Now the amount of sealing up for safekeeping of carbon reaches 8.53 × 10 in newly-increased building9Kg, in existing highly energy-consuming building renovation up to 2.24 ×
1011Kg, the standard area of woods of being converted into is respectively 5.31 × 107m2、1.40×109m2；
When charcoal substitutes volume≤5%, concrete strength >=30.0MPa meets C30 strength grade construction requirements,
Now carbon sequestration amount reaches 1.70 × 10 in newly-increased building9Kg, up to 0.49 × 10 in existing highly energy-consuming building renovation11Kg,
Equivalent standard area of woods is respectively 0.62 × 107m2、0.28×109m2。
The State Administration of Forestry 2014 year authority's issue in 2 months, China's area of woods is 2.08 × 1012m2, promote C20 C25
After C30 charcoal concrete, it is about 3.05 × 10 to increase newly and close the equivalent standard forest gross area of transformation building9m2, account for China forest
The 1.5 ‰ of area.
Thus, carbon sequestration contribution of the charcoal concrete to environment is considerable, to reducing carbon dioxide greenhouse gas
The discharge of body has positive role.
The charcoal concrete is different with normal concrete carbonization, and charcoal concrete for making process is to use inert life
Thing charcoal and cement, sand, stone are combined, and are not chemically reacted.It is from the architectural characteristic for physically playing charcoal.And common coagulation
Soil carbonization is concrete and carbon dioxide reaction, forms carbonate, reduces concrete hardness.
In manufacturing process, cement and charcoal must not be mixed in advance, otherwise charcoal before stirring, for convenience
Hygroscopicity it is high, cement and charcoal can be caused cementing in advance, the ability of agglutination sand and stone declines afterwards, influence concrete
Hardness and service behaviour.
Embodiment
Embodiment 1
The manufacturing process in strict accordance with《Design of common concrete proportioning code》(JGJ55-2011) and《Concrete knot
Structure design specification》Design and making.After the charcoal concrete standard that completes is conserved 28 days, more than 95% reaches and sets
Count intensity, its design strength fcu,k=20.0MPa, preparation strength fcu, o=26.58MPa, the design slump are 10-20mm, if
It is 40% to count sand coarse aggregate ratio, the ratio of mud { i.e. water/(cement+biology powdered carbon) } W/B=0.57 (in specific works appropriate adjustment water
Amount, is allowed to consistent with design slump).Specific coordination in works, according to the cement：Sand：Rubble：Water=1：3.16：
4.36：0.57 proportions., must be according to biological powdered carbon using cement mixing equipment making concrete in the manufacturing process
0,1%, 5%, 10%, 15%, 20%, 25%, 30% ratio of mass substitution cement amount, and the requirement sand, building stones, water
Mud, the water same time are sufficiently mixed, mixing time 5-10% longer than normal concrete mixing time.Must not before stirring,
For convenience, cement and charcoal are mixed in advance, otherwise the hygroscopicity of charcoal is high, can cause cement and charcoal glue in advance
The ability decline of knot, afterwards agglutination sand and stone, influences the hardness and service behaviour of concrete.
The manufacturing process, is first according to feedstock property scope and chooses quality material, then, is completed according to required maintenance
Volume of concrete and the slump calculate the amount of concrete to be made, then determine by the composition of raw materials number of every kind of raw material
Amount.
The feedstock property scope is determined according to table 1-3, and material property requirements chosen material is not pressed in the manufacturing process,
The charcoal concrete produced will not reach the hardness and service behaviour of requirement.
(1) charcoal concrete strength
The expression of concrete strength is the important indicator in its numerous performance.As intensity is bigger, concrete support power resists
Compressive Strength is bigger.Generally, in the timing of lifting surface area one, pressure and pressure are into positive correlation.Table 5 gives different charcoals and replaced
The strength grade of the charcoal concrete obtained for cement amount.
Charcoal concrete pressure and intensity under the conditions of the different disposal of table 4
Charcoal concrete pressure and intensity under the conditions of the different disposal of table 5
It has been shown that, after standard curing 28t, when charcoal replacement amount is A1, as 1% level, can bear according to table 5
Maximum pressure and maximum pressure are maximum, and the concrete pressure and intensity than not admixing charcoal are also big, this explanation, blending 1%
Charcoal improves the intensity of concrete.According to analysis, when admixing 5% charcoal, the intensity of concrete and biology is not admixed
The concrete of charcoal maintains an equal level.Statistical analysis shows that the blending of 1% level significantly, shows the charcoal of A1 levels with other level differences
It is to significantly increase to substitute expression of the cement mixing content to the intensity of concrete.
(2) slump of charcoal concrete
What table 6 reflected is that under the conditions of the design and construction ratio of mud, different charcoals substitute the slump of volume concrete, inhaled
Water time change situation and variable density.Show from table 6, it is raw as into concrete, charcoal substitutes the increase of cement mixing content
Thing charcoal concrete slump and density are in reduction trend, and rate of water absorption gradually increases.
The different charcoals of table 6 substitute volume concrete performance
(3) charcoal carbon concrete seals the value assessment of carbon up for safekeeping
Report according to statistics, Chinese existing building area is up to 5.6 × 1010m2, newly-increased construction area is 2 × 10 every year9m2, account for
The world increases more than half of construction area newly.All these buildings are most of to be built with mixed mud, 95% category highly energy-consuming building.
There are some researches show every square metre of standard forest can be sealed up for safekeeping with sequestration of carbon dioxide about 1.6kg, equivalent charcoal daily
About 0.44kg, calculated, can seal 160kg or so carbon up for safekeeping for 1 year by 365 days.In architectural engineering, unit construction area concrete
Consumption average value be 0.3-0.36m3·m-2.By conversion, consumption in architectural engineering of the concrete of different intensity grades,
Whole nation building carbon sequestration amount, building carbon sequestration are converted into standard area of woods and are shown in Table 7.
The carbon concrete of table 7 national carbon sequestration amount and equivalent standard in newly-increased building and existing highly energy-consuming building renovation is gloomy
Woods area
* concrete amount is calculated according to ratio of the different strength grades in architectural engineering；C20 in table, C25,
Reduced value corresponding to C30 strength grades is when being more than or equal to design strength value according to observed strength value, and to meet architectural engineering
Value obtained by execution conditions
As can be seen from Table 7, the replacement volume of charcoal is converted to after carbon sequestration amount, is meeting strength grade of concrete
Design requirement and under the conditions of meeting building engineering construction, the charcoal concrete of different intensity grades is in the newly-increased groups of building in the whole nation
Neutralize in existing highly energy-consuming building renovation, the contribution amount to carbon sequestration is different, the standard area of woods of being converted into is also different therewith, knot
Close table 5：
When charcoal substitutes volume≤30%, concrete strength >=20.0MPa meets C20 strength grade construction requirements,
Now the amount of sealing up for safekeeping of carbon reaches 7.50 × 10 in newly-increased building9Kg, in existing highly energy-consuming building renovation up to 2.03 ×
1011Kg, the standard area of woods of being converted into is respectively 4.69 × 107m2、1.27×109m2；
When charcoal substitutes volume≤25%, concrete strength >=25.0MPa meets C25 strength grade construction requirements,
Now the amount of sealing up for safekeeping of carbon reaches 8.53 × 10 in newly-increased building9Kg, in existing highly energy-consuming building renovation up to 2.24 ×
1011Kg, the standard area of woods of being converted into is respectively 5.31 × 107m2、1.40×109m2；
When charcoal substitutes volume≤5%, concrete strength >=30.0MPa meets C30 strength grade construction requirements,
Now carbon sequestration amount reaches 1.70 × 10 in newly-increased building9Kg, up to 0.49 × 10 in existing highly energy-consuming building renovation11Kg,
Equivalent standard area of woods is respectively 0.62 × 107m2、0.28×109m2。
The State Administration of Forestry 2014 year authority's issue in 2 months, China's area of woods is 2.08 × 1012m2, promote C20 C25 C30
After charcoal concrete, it is about 3.05 × 10 to increase newly and close the equivalent standard forest gross area of transformation building9m2, account for China forest face
Long-pending 1.5 ‰.
Embodiment 2
In manufacturing process, using cement mixing equipment making charcoal concrete (be the same as Example 1), while adding not homochromy
Element, prepares the concrete of different colours.Because charcoal is stronger to the absorption affinity of pigment, colouring easier than normal concrete.
Claims (7)
1. a kind of charcoal concrete, it is characterised in that：Described coagulation local soil type is into material quality ratio：Cement：Sand：Building stones：
Water=1：1.00-3.16：1.00-4.36：0.40-0.60, cement quality 0.01%-30% cement is accounted for according to charcoal quality
Quality.
2. a kind of charcoal concrete according to claim 1, it is characterised in that：Described coagulation local soil type is into material quality
Than for：Cement：Sand：Building stones：Water=1：2.00-3.16：3.00-4.36：0.50-0.60, cementaceous is accounted for according to charcoal quality
Measure the quality that 1%-30% replaces cement.
3. a kind of charcoal concrete according to claim 1, it is characterised in that：The fundamental property of described charcoal is such as
Table 1 below：
4. a kind of charcoal concrete according to claim 1, it is characterised in that：The fundamental property of described cement is as follows
Table 2：
5. a kind of charcoal concrete according to claim 1, it is characterised in that：Described sand and the property of rubble are as follows
Table 3：
6. a kind of charcoal concrete according to claim 1, it is characterised in that：Described water is drinking water.
7. a kind of preparation method of charcoal concrete as described in one of claim 1-6, it is characterised in that：Stirred using cement
Mixing equipment makes concrete, and biological powdered carbon, sand, building stones, cement and water same time are sufficiently mixed, are stirred, wherein stirring
Mix time 5-10% longer than normal concrete mixing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555528.9A CN107188478A (en) | 2017-07-10 | 2017-07-10 | A kind of charcoal concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555528.9A CN107188478A (en) | 2017-07-10 | 2017-07-10 | A kind of charcoal concrete |
Publications (1)
| Publication Number | Publication Date |
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| CN107188478A true CN107188478A (en) | 2017-09-22 |
Family
ID=59883379
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586081A (en) * | 2017-08-18 | 2018-01-16 | 王震洪 | A kind of charcoal concrete |
| CN108623248A (en) * | 2018-04-03 | 2018-10-09 | 中国农业大学 | A kind of charcoal is modified eco-concrete and preparation method thereof |
| CN113307561A (en) * | 2021-06-04 | 2021-08-27 | 大连海事大学 | Preparation method of biochar concrete fish reef material |
| CN113387648A (en) * | 2021-06-18 | 2021-09-14 | 长安大学 | Garbage pyrolysate concrete prepared from solid waste and preparation method thereof |
| CN114716200A (en) * | 2022-03-07 | 2022-07-08 | 深圳大学 | Carbon capture aggregate using biochar and bottom ash as raw materials and preparation method thereof |
| 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 |
| CN115432969A (en) * | 2022-08-30 | 2022-12-06 | 中建一局集团建设发展有限公司 | Biochar concrete with carbon fixing capacity for 3D printing and preparation method thereof |
-
2017
- 2017-07-10 CN CN201710555528.9A patent/CN107188478A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586081A (en) * | 2017-08-18 | 2018-01-16 | 王震洪 | A kind of charcoal concrete |
| CN108623248A (en) * | 2018-04-03 | 2018-10-09 | 中国农业大学 | A kind of charcoal is modified eco-concrete and preparation method thereof |
| CN113307561A (en) * | 2021-06-04 | 2021-08-27 | 大连海事大学 | Preparation method of biochar concrete fish reef material |
| CN113387648A (en) * | 2021-06-18 | 2021-09-14 | 长安大学 | Garbage pyrolysate concrete prepared from solid waste and preparation method thereof |
| CN114716200A (en) * | 2022-03-07 | 2022-07-08 | 深圳大学 | Carbon capture aggregate using biochar and bottom ash as raw materials and preparation method thereof |
| 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 |
| CN115432969A (en) * | 2022-08-30 | 2022-12-06 | 中建一局集团建设发展有限公司 | Biochar concrete with carbon fixing capacity for 3D printing and preparation method thereof |
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Application publication date: 20170922 |
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