CN104817303B - A kind of preparation method of cement base plant straw fibers particulate materials for wall - Google Patents
A kind of preparation method of cement base plant straw fibers particulate materials for wall Download PDFInfo
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- CN104817303B CN104817303B CN201510153265.XA CN201510153265A CN104817303B CN 104817303 B CN104817303 B CN 104817303B CN 201510153265 A CN201510153265 A CN 201510153265A CN 104817303 B CN104817303 B CN 104817303B
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of preparation method of cement base plant straw fibers particulate materials for wall, its step is：Dry plant straw fibers are cut into segment, are put in aqueous slkali and soak, dry；The plant straw fibers for drying are sucked pulverizer from charging aperture, is persistently stopped charging after 5～8min of charging, and continues 5～10min is crushed, obtain plant straw fibers particulate；Plant straw fibers particulate is sieved using square hole screen, obtains the plant straw fibers particulate of appropriate particle size；Cement, flyash, fine sand, plant straw fibers particulate, water is taken, is thoroughly mixed uniformly, pours in a mold, the demoulding after condensation, and the test specimen after the demoulding is put into standard curing room maintenance, obtain cement base plant straw fibers particulate materials for wall.Materials for wall any surface finish prepared by the present invention, need not carry out after-treatment, effectively reduce difficulty and operation that metope is processed, and with excellent thermal and insulating performance, preferable toughness and impact resistance, excellent sound insulation property and effect.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of cement base plant straw fibers particulate materials for wall
Preparation method.
Background technology
Cement base plant straw fibers particulate materials for wall is a kind of by the use of strings such as stalks as raw material, in water
The string particulate such as stalk of certain proportion quantity is added in raw material before mud shaping, form string mixing cement building block
And sheet material, this material with its more lightweight, be more incubated, save native, economical many advantages, such as more will be widely applied.And
And its production process energy-conservation, save land, be conducive to environmental protection, meet the requirement of green wall materials.
It is to suppress and stablize the development of microcrack that fiber adds major function in concrete, and this is to relax concrete decay
Striving direction.And fiber is close to each other, draw ratio is big, and surface area is big, and adhesion strength and tensile strength are larger, the shadow of fracture
Sound is larger, and especially the balance of adhesion strength and tensile strength is crucial.Because string is finally to extract rather than fracture
Ineffective, so high pull-out resistance can be had significant effect to the toughness of concrete and adsorption capacity.So fiber
Mechanics, physical balance and durability determine effect of the fiber in concrete.Experimental analysis shows that string is at this
It is more preferable that aspect carrys out effect compared with steel fibre and synthetic fibers.Geometry characteristic distributions of the string in concrete are also superior to other
Fiber, as per gram of fiber count is higher than tens times of other fibers, intersects closely, microcrack can be limited in less scope
Interior, control the extension of its tip location, especially cellulose fibre diameter is thin and surface hydrophilicity is strong, does not thus interfere with water
The compacting of mud particle.Thus micro-structural density is high, uniformity is good.
All kinds of cement base plant straw fibers particulate materials for walls have the advantages that sound insulation, heat-insulated, light weight also obtain one
Determine application and the popularization of degree, but also because its weight capacity is not as good as the effect of clay brick, receive in the application on load bearing wall
To great limitation.The physical and mechanical property for how improving replacement materials for wall further just becomes the key technology of materials for wall
One of.Document " research of Straw Plant Fiber Cement Composite performance " (Jilin Construction Engineering Academy journal, in March, 2005,
The 1st phase of volume 22) in, the method for employing is：Corn stalk powder is broken into the fiber particle of 1mm～15mm, goes soil stand-by.To plant
Fibres are uniform with surface conditioning agent premix, stir about 2min, i.e. mix surface conditioning agent under spraying state with string
Conjunction stirs, and dries to moisture content 10% or so, is subsequently adding above-mentioned pre- mixed other materials, continue stirring 4min～
6min so as to uniform.In this whipping process, fibrous caking phenomenon, otherwise material skewness is not allow for, produces stress collection
In.Carry out test of the volumes such as stalk, flyash, the surface modifier change on composite property impact.Carry out orthogonal design,
Optimum mix is found out, test specimen is conserved at the standard conditions.The volume of stalk is respectively the 0%, 5%, 10% of cement content,
15%, 20%.As a result show progressively to decline with the increase of stalk volume, the intensity of composite, bend-press ratio is incrementally increased, its
The compression strength of 28d is less than 26MPa.Patent document CN102976684B, a kind of " load bearing heat preserving crack resistance type cotton stalk cement base
Building block ", the invention are fabricated to load bearing heat preserving crack resistance type cotton stalk cement base building block using cotton stalk, and wherein cotton stalk breaks
Particle of the length for 10mm to 50mm is broken into, and building block is mixed with cement, sand, aluminium powder, water reducer and water, holding after form removal
Weight thermal-insulating and anti-cracking type cotton stalk cement base building block conserve 28 days under the conditions of standard curing after compression strength of building block up to
5.0MPa to 8.0MPa.
Walling unit is prepared for using plant straw fibers in above-mentioned document, but its compression strength is relatively low, it is impossible to reach
The requirement of load bearing wall application.The present invention by the use of strings such as stalks as raw material, be crushed into granularity 20-80 mesh it
Between, the stalk plant fiber particulate of certain proportion quantity is added in the raw material before cement shaping, is formed string and is mixed water
Mud building block and sheet material so as to physical and mechanical property more superior.
Content of the invention
As various extensive and careful researchs and the result of experiment, it has been found by the inventor that becoming in cement
The stalk plant fiber particulate of the 20-80 mesh of certain proportion quantity is added in raw material before type, is favorably improved materials for wall
Compression strength.Based on this discovery, the present invention is completed.
It is an object of the invention at least the above and/or defect is solved, and provide at least will be described later excellent
Point.
A further object of the invention is the method by controlling the running frequency of pulverizer all parts, obtains granularity and exists
The stalk plant fiber particulate of 20-80 mesh, and the 20-80 purpose of certain proportion quantity is added in the raw material before cement shaping
Stalk plant fiber particulate, while it is aided with suitable curing condition, to make body of wall obtain more preferable compression strength.
In order to realize according to object of the present invention and further advantage, there is provided a kind of cement base plant straw fibers are micro-
The preparation method of grain materials for wall, comprises the following steps：
Step one, dry plant straw fibers are cut into the segment of 3～5mm, are then placed in 3～5% aqueous slkali
Soak and do surface modification treatment in 5～10 hours, then dry；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened,
The plant straw fibers for drying are sucked pulverizer from charging aperture, and to control crushing main frame frequency be 10～20Hz, air-introduced machine frequency
Rate is 20～40Hz, and classification unit frequency is 25～35Hz；Persistently stop charging after 5～8min of charging, and continue to crush 5～
10min, obtains plant straw fibers particulate；
Step 2, the plant straw fibers particulate obtained using the square hole screen screening step one of 20～80 mesh/mesh, are obtained
Particle diameter is the plant straw fibers particulate of 20～80 mesh；
Step 3, by weight percentage, takes 100 parts of Portland cement, 40～50 parts of flyash, fine sand 10～30
Part, 5～15 parts of the plant straw fibers particulate of 20～80 mesh, 30～40 parts of water, are thoroughly mixed uniformly, are then cast in mould
In tool, in casting process, 1～3 part of water is reinjected；After the completion of pouring, the demoulding after condensing 3-5 days, and by the test specimen after the demoulding
Standard curing room is put into, under conditions of 20 ± 2 DEG C of temperature, relative humidity more than 95%, is conserved 31～40 days, obtains cement base
Plant straw fibers particulate materials for wall.
Preferably, the straw be wheat stalk, Chinese sorghum straw, cotton stalk, maize straw, in rice straw
One kind.
Preferably, the aqueous slkali is the one kind in sodium hydroxide solution, potassium hydroxide solution and urea liquid.
Preferably, the Portland cement be 32.5R level, 42.5 grades, in 42.5R level Portland cement
A kind of.
Preferably, the flyash is I level flyash, and fineness is to be tailed over afterwards≤12% using the square hole screen of 0.045mm,
Loss on ignition≤5%, sulfur dioxide≤3%.
Preferably, the granularity of the fine sand is 0.25～0.35mm.
In the present invention, it is to suppress and stablize the development of microcrack that string adds major function in cement, and this is slow
The striving direction that degenerates with cement.And string is close to each other, draw ratio is big, and surface area is big, and adhesion strength and tension are strong
Degree is larger, and the impact of fracture is larger, and especially the balance of adhesion strength and tensile strength is crucial.Because fiber is finally pulled out
Go out rather than fracture and be ineffective, so high pull-out resistance can have great shadow to the toughness of concrete and adsorption capacity
Ring.Geometry characteristic distributions of the string in concrete also superior to other fibers, as per gram of fiber count is fine higher than other
Tens times of dimension, intersects closely, microcrack can be limited in less scope, control the extension of its tip location, especially plant
Fiber diameter is thin and surface hydrophilicity is strong, does not thus interfere with the compacting of cement granules.Thus micro-structural density is high, uniformly
Property is good.
In the present invention using 20～80 mesh square hole screen, square hole grit number with the corresponding relation of screen size is：20 mesh：
0.850mm, 25 mesh：0.710mm, 30 mesh：0.600mm, 35 mesh：0.500mm, 40 mesh：0.425mm, 45 mesh：0.355mm, 50
Mesh：0.300mm, 60 mesh：0.250mm, 70 mesh：0.212mm, 80 mesh：0.180mm.
In step 3 of the present invention, by the material for mixing in casting process, 1～3 part of water, the mesh of do so is reinjected
The fiber dust of drying for being because adding there is hydrophily, therefore 1～3 part of water can be reinjected according to different condition, it is ensured that
The water consumption of material in casting process.
Portland cement is used as main bonding component in the present invention, flyash, fine sand as admixture, with cement one
Play composition complex cementitious system.Flyash refers to one kind that thermal power plant is given off as fuel using brown coal, ub-bituminous coal
Flyash containing CaO composition, is a kind of both containing certain amount hydraulicity crystalline mineral, again containing lateral reactivity material, while
The material of the impermeability of mortar can be improved.
The present invention at least includes following beneficial effect：
(1) under the yardstick of standard block and sheet material, density reaches 1.6-2.0g/cm3.Stalk plant fiber micro-fine cement
Material compression strength reaches 30-50MPa in the case of any other process conditions is not applied, and strain rate increases,
Peak deformations amount reaches 1.0-1.2mm, and material has preferable toughness and impact resistance.
(2) ratio of stalk plant fiber particulate and cement material match ratio brings up to 5-15%, so as to improve further
Thermal and insulating performance, thermal conductivity factor：0.10-0.15W/m.K, realizes the high thermal resistance of stalk plant fiber concrete, low heat transfer coefficient.
(3) sound insulation property of stalk fibre building block is improved, and its sound insulation reaches 40-50dB and improves stalk plant fiber further
The weighted transmission loss of material and frequency spectrum correction, realize excellent sound insulation property and effect.
(4) the plant fiber particle geometric scale 20-80 mesh in string micro-fine cement material, the material entirety of formation
Any surface finish, need not carry out after-treatment, effectively reduce difficulty and operation that metope is processed, engineering time and engineering is greatly decreased
Cost.
(5) building block of cement straw string is used for house wall, can protect farmland, the resource such as forest；Ring can be reduced
Border is polluted (including secondary pollution)；With excellent energy-saving heat-insulating, fire-retardant, mothproof, waterproof, nonpoisonous and tasteless, high-strength light and anti-
The premium properties such as fungi erosion, the requirement of the energy-conservation more than 50% of realization；Compare reduced investment of founding the factory, occupation of land with production clay brick
Less, energy consumption is low, and can carry out sawing, bore, follow closely, milling, engraving, the machining such as mortise, incrustation performance is good.Improve brick setting
Thermal conductivity factor, stalk plant fiber particle wall material replace clay brick thermal resistance double, and are a kind of excellent heat preservation energy-saving materials
Material.
(6) materials for wall of the present invention can mitigate building from weighing about more than 30%；Masonry mortar can be saved and sand of wiping one's face
Slurry consumption about more than 70%.
Part is embodied by the further advantage, target of the present invention and feature by description below, and part will also be by this
The research of invention and practice and be understood by the person skilled in the art.
Description of the drawings：
The profile scanning of the cement base plant straw fibers particulate materials for wall that Fig. 1 is prepared for the embodiment of the present invention 4
Electron microscope；
The compression strength of the cement base plant straw fibers particulate materials for wall that Fig. 2 is prepared for the embodiment of the present invention 4
Test result figure.
Specific embodiment：
The present invention is described in further detail with reference to the accompanying drawings and examples, to make those skilled in the art's reference
Specification word can be implemented according to this.
It should be appreciated that such as " with ", "comprising" and " including " term used herein do not allot one or many
The presence or interpolation of other elements individual or its combination.
Embodiment 1：
Step one, dry wheat straw fiber is cut into the segment of 3～5mm, is then placed in 3% sodium hydroxide solution
Middle immersion does surface modification treatment in 5 hours, then dries；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened, will
The wheat straw fiber that dries sucks pulverizer from charging aperture, and to control crushing main frame frequency be 10Hz, and air inducing unit frequency is
20Hz, classification unit frequency are 25Hz；Persistently stop charging after charging 5min, and continue 5min is crushed, obtain wheat straw fiber
Particulate；
Step 2, the wheat straw fiber particulate obtained using the square hole screen screening step one of 20 mesh/mesh, obtain particle diameter
Wheat straw fiber particulate for 20 mesh；
Step 3, by weight percentage, takes 100 parts of 32.5R level Portland cement, 40 parts of flyash, 10 parts of fine sand,
30 parts of 5 parts of the wheat straw fiber particulate of 20 mesh, water, is thoroughly mixed uniformly, then pours in a mold, in casting process
In, reinject 1 part of water；After the completion of pouring, the demoulding after condensing 3 days, and the test specimen after the demoulding is put into standard curing room, in temperature
18 DEG C, under conditions of relative humidity more than 95%, conserve 31 days, obtain cement base wheat straw fiber particulate materials for wall.
Embodiment 2：
Step one, dry wheat straw fiber is cut into the segment of 3～5mm, is then placed in 5% sodium hydroxide solution
Middle immersion does surface modification treatment in 10 hours, then dries；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened,
The wheat straw fiber that dries is sucked pulverizer from charging aperture, and to control crushing main frame frequency be 20Hz, air inducing unit frequency is
40Hz, classification unit frequency are 35Hz；Persistently stop charging after charging 8min, and continue 10min is crushed, obtain wheat straw fiber
Particulate；
Step 2, the wheat straw fiber particulate obtained using the square hole screen screening step one of 80 mesh/mesh, obtain particle diameter
Wheat straw fiber particulate for 80 mesh；
Step 3, by weight percentage, takes 100 parts of 42.5 grades of Portland cements, 50 parts of flyash, 30 parts of fine sand,
40 parts of 15 parts of the wheat straw fiber particulate of 80 mesh, water, is thoroughly mixed uniformly, then pours in a mold, pouring
Cheng Zhong, reinjects 3 parts of water；After the completion of pouring, the demoulding after condensing 5 days, and the test specimen after the demoulding is put into standard curing room, in temperature
Under conditions of 22 DEG C of degree, relative humidity more than 95%, conserve 40 days, obtain cement base plant straw fibers particulate materials for wall.
Embodiment 3：
Step one, dry corn stalk fiber is cut into the segment of 3～5mm, is then placed in 4% potassium hydroxide solution
Middle immersion does surface modification treatment in 8 hours, then dries；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened, will
The corn stalk fiber for drying sucks pulverizer from charging aperture, and to control crushing main frame frequency be 15Hz, and air inducing unit frequency is
25Hz, classification unit frequency are 30Hz；Persistently stop charging after charging 8min, and continue 8min is crushed, obtain corn stalk fiber
Particulate；
Step 2, the corn stalk fiber particulate obtained using the square hole screen screening step one of 60 mesh/mesh, obtain particle diameter
Corn stalk fiber particulate for 60 mesh；
Step 3, by weight percentage, takes 100 parts of 32.5R level Portland cement, 48 parts of flyash, 25 parts of fine sand,
35 parts of 10 parts of the corn stalk fiber particulate of 60 mesh, water, is thoroughly mixed uniformly, then pours in a mold, pouring
Cheng Zhong, reinjects 2 parts of water；After the completion of pouring, the demoulding after condensing 5 days, and the test specimen after the demoulding is put into standard curing room, in temperature
Under conditions of 20 DEG C of degree, relative humidity more than 95%, conserve 35 days, obtain cement base plant straw fibers particulate materials for wall.
Embodiment 4：
Step one, dry corn stalk fiber is cut into the segment of 3～5mm, is then placed in 5% sodium hydroxide solution
Middle immersion does surface modification treatment in 10 hours, then dries；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened,
The plant straw fibers for drying are sucked pulverizer from charging aperture, and to control crushing main frame frequency be 15Hz, air inducing unit frequency is
30Hz, classification unit frequency are 30Hz；Persistently stop charging after charging 5min, and continue 10min is crushed, obtain corn stalk fiber
Particulate；
Step 2, the plant straw fibers particulate obtained using the square hole screen screening step one of 70 mesh/mesh, obtain particle diameter
Plant straw fibers particulate for 70 mesh；
Step 3, by weight percentage, takes 100 parts of 32.5R level Portland cement, 45 parts of flyash, 28 parts of fine sand,
38 parts of 12 parts of the corn stalk fiber particulate of 70 mesh, water, is thoroughly mixed uniformly, then pours in a mold, pouring
Cheng Zhong, reinjects 3 parts of water；After the completion of pouring, the demoulding after condensing 5 days, and the test specimen after the demoulding is put into standard curing room, in temperature
Under conditions of 20 DEG C of degree, relative humidity more than 95%, conserve 40 days, obtain cement base plant straw fibers particulate materials for wall.
The profile scanning Electronic Speculum of the cement base plant straw fibers particulate materials for wall that Fig. 2 is prepared for the present embodiment
Figure, from the figure, it can be seen that plant straw fibers can be combined together well with cement, flyash etc., can so make
The material integral surface of formation is bright and clean, and improves the performance of materials for wall further.
In order to the effect of the present invention is described, it is as follows that inventor provides contrast experiment：
Comparative example 1：
The straw obtained using the square hole screen screening step one of 18 mesh, 16 mesh, 14 mesh or 12 mesh in step 2 is fine
Dimension particulate, obtain respectively particle diameter be 18 mesh, the plant straw fibers particulate of 16 mesh, 14 mesh or 12 mesh, and in step 3 respectively
Poured in a mold using the plant straw fibers particulate of 18 mesh, 16 mesh, 14 mesh or 12 mesh, complete in remaining parameter and example 1
Exactly the same, technical process is also identical.
Compression strength survey is carried out to cement base plant straw fibers particulate materials for wall prepared by embodiment 1 and comparative example 1
Examination, as a result as shown in table 1.
Table 1
As seen from Table 1, compared with Example 1, the mesh number of the plant straw fibers particulate for adopting in comparative example 1 is respectively less than real
Example 1, the i.e. size of 1 particulate of comparative example are applied more than embodiment 1, the compression strength of the materials for wall for obtaining is respectively less than embodiment 1, and
And the reduction with mesh number, compression strength illustrates, in the range of fiber grain of the present invention, to obtain with reduction
The preferable materials for wall of compression strength.
Comparative example 2：
In step 3 of the present invention, 3 parts of the corn stalk fiber particulate of 60 mesh taken, complete in remaining parameter and example 3
Identical, technical process is also identical.
Comparative example 3：
In step 3 of the present invention, 18 parts of the corn stalk fiber particulate of 60 mesh taken, complete in remaining parameter and example 3
Identical, technical process is also identical.
Resistance to compression is carried out to cement base plant straw fibers particulate materials for wall prepared by embodiment 3, comparative example 2, comparative example 3
Intensity and thermal and insulating performance test, as a result as shown in table 2.
Table 2
As seen from Table 2, compared with Example 3, the corn stalk fiber particulate for adopting in comparative example 2 is 3 parts, less than this
Bright described scope 5-15 part, the materials for wall compression strength for obtaining are higher, while thermal conductivity factor is also higher, cause materials for wall
Heat preservation and heat insulation performance is poor, the corn stalk fiber particulate adopted in comparative example 3 be 18 parts, higher than scope 5- of the present invention
15 parts, the thermal conductivity factor of the materials for wall for obtaining is low, and thermal and insulating performance is preferable, but corresponding compression strength is relatively low, it is impossible to
Meet the goal of the invention of the present invention.
It can be seen that, the raw material adopted in the present invention in the ratio, and in the preparation process of materials for wall, each
In described scope, the materials for wall of preparation has excellent performance to parameter.
Although embodiment of the present invention is disclosed as above, but its be not restricted in specification and embodiment listed
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the example with description.
Claims (6)
1. a kind of preparation method of cement base plant straw fibers particulate materials for wall, it is characterised in that comprise the following steps：
Step one, dry plant straw fibers are cut into the segment of 3～5mm, are then placed in 3～5% aqueous slkali, soaking 5
Do surface modification treatment within～10 hours, then dry；Grader, air-introduced machine and the crushing main frame of stalk crasher is opened, will be dried in the air
Dry plant straw fibers suck pulverizer from charging aperture, and to control crushing main frame frequency be 10～20Hz, and air inducing unit frequency is
20～40Hz, classification unit frequency are 25～35Hz；Persistently stop charging after 5～8min of charging, and continue 5～10min is crushed, obtain
To plant straw fibers particulate；
Step 2, the plant straw fibers particulate obtained using the square hole screen screening step one of 20～80 mesh/mesh, obtain particle diameter
Plant straw fibers particulate for 20～80 mesh；
Step 3, by weight percentage, takes 100 parts of Portland cement, 40～50 parts of flyash, 10～30 parts of fine sand, 20
30～40 parts of 5～15 parts of the plant straw fibers particulate of～80 mesh, water, is thoroughly mixed uniformly, then pours in a mold,
In casting process, 1～3 part of water is reinjected；After the completion of pouring, the demoulding after condensing 3-5 days, and the test specimen after the demoulding is put into mark
Quasi- fog room, under conditions of 20 ± 2 DEG C of temperature, relative humidity more than 95%, conserves 31～40 days, obtains cement base plant straw
Stalk fiber particulate materials for wall.
2. the preparation method of cement base plant straw fibers particulate materials for wall as claimed in claim 1, it is characterised in that institute
Straw is stated for the one kind in wheat stalk, Chinese sorghum straw, cotton stalk, maize straw, rice straw.
3. the preparation method of cement base plant straw fibers particulate materials for wall as claimed in claim 1, it is characterised in that institute
Aqueous slkali is stated for the one kind in sodium hydroxide solution, potassium hydroxide solution and urea liquid.
4. the preparation method of cement base plant straw fibers particulate materials for wall as claimed in claim 1, it is characterised in that institute
Portland cement is stated for the one kind in 32.5R level, 42.5 grades, 42.5R level Portland cement.
5. the preparation method of cement base plant straw fibers particulate materials for wall as claimed in claim 1, it is characterised in that institute
Flyash is stated for I level flyash, fineness is to tail over afterwards≤12% using the square hole screen of 0.045mm, loss on ignition≤5%, titanium dioxide
Sulphur≤3%.
6. the preparation method of cement base plant straw fibers particulate materials for wall as claimed in claim 1, it is characterised in that institute
The granularity for stating fine sand is 0.25～0.35mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105502987A (en) * | 2015-12-24 | 2016-04-20 | 哈尔滨工业大学 | Plant fiber processing method |
| CN106631120A (en) * | 2016-12-30 | 2017-05-10 | 西南科技大学 | Straw-fiber and shale sintered microporous material and preparation method thereof |
| CN110183201A (en) * | 2019-05-06 | 2019-08-30 | 浙江大东吴集团建设有限公司 | A kind of green cement composite material |
| CN110041040B (en) * | 2019-05-10 | 2021-09-07 | 鲁兵 | Fabricated building material and preparation method thereof |
| CN110218029A (en) * | 2019-05-23 | 2019-09-10 | 谢韬晋 | A kind of preparation method of agricultural crop straw regeneration insulating brick |
| CN111302685A (en) * | 2020-02-21 | 2020-06-19 | 郑州知淘信息科技有限责任公司 | Preparation method of wheat straw fiber reinforced cement board and wheat straw fiber reinforced cement board |
| CN111892346A (en) * | 2020-04-26 | 2020-11-06 | 东北电力大学 | Environment-friendly modified straw fiber regenerated fine aggregate cement-based composite material and preparation method thereof |
| CN113603432A (en) * | 2021-08-09 | 2021-11-05 | 中国十七冶集团有限公司 | Production method of cotton straw concrete |
| CN113563105B (en) * | 2021-08-09 | 2023-03-24 | 中国十七冶集团有限公司 | Production method of cotton straw foamed concrete hollow building block |
| TWI819772B (en) * | 2022-09-02 | 2023-10-21 | 方建弘 | Low carbon concrete composition, filling material and preparation method thereof |
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| KR100371389B1 (en) * | 2000-02-09 | 2003-02-06 | 임기표 | Method for recycling waste papers and woody biomass |
| CN101885596A (en) * | 2010-06-11 | 2010-11-17 | 北京交通大学 | Plant fiber cement-based block material and preparation method thereof |
| CN102976684B (en) * | 2012-12-11 | 2014-07-02 | 新疆农业大学 | Load-bearing thermal-insulating and anti-crack type cotton straw cement-based building block and preparation method thereof |
| CN104119025B (en) * | 2014-08-11 | 2017-02-15 | 山东华森混凝土有限公司 | Water-retaining, thickening and reinforcing additive for cement mortar and cement mortar containing additive |
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