CN116102330A - Plant fiber cement-based composite light wallboard and preparation method thereof - Google Patents
Plant fiber cement-based composite light wallboard and preparation method thereof Download PDFInfo
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- CN116102330A CN116102330A CN202310112251.8A CN202310112251A CN116102330A CN 116102330 A CN116102330 A CN 116102330A CN 202310112251 A CN202310112251 A CN 202310112251A CN 116102330 A CN116102330 A CN 116102330A
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- arundo donax
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- 239000004568 cement Substances 0.000 title claims abstract description 67
- 239000000835 fiber Substances 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000010902 straw Substances 0.000 claims abstract description 50
- 241001494508 Arundo donax Species 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000006004 Quartz sand Substances 0.000 claims abstract description 36
- 241000196324 Embryophyta Species 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 31
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 30
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 30
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 30
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 30
- 239000010881 fly ash Substances 0.000 claims abstract description 25
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 25
- 239000011324 bead Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 229920002488 Hemicellulose Polymers 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 238000010000 carbonizing Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001277 pectin Polymers 0.000 claims description 3
- 235000010987 pectin Nutrition 0.000 claims description 3
- 239000001814 pectin Substances 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 239000003469 silicate cement Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- 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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Botany (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a plant fiber cement-based composite light wallboard and a preparation method thereof, belonging to the technical field of building materials, wherein the light wallboard comprises, by mass, 50-60 parts of cement, 5-10 parts of fly ash deposited beads, 10-20 parts of silica fume, 10-20 parts of slaked lime, 8-20 parts of quartz sand powder, 20-30 parts of water, 1-2 parts of a water reducing agent and 20-35 parts of carbonized space arundo donax straw. The method has the advantages that the space arundo donax with high carbon fixation is utilized to take the straw as the light aggregate, the carbon dioxide discharged by enterprises is recycled, the carbon discharge in the cement industry can be effectively reduced, an effective path is provided for subsequent work, the space arundo donax is an ideal carbon fixation plant, the arundo donax straw is utilized to be compounded with cement as the light aggregate to prepare various light boards, technical reserve is provided for subsequent work in the cement industry, and an effective path is provided for carbon recycling economy.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a plant fiber cement-based composite light wallboard and a preparation method thereof.
Background
Cement boards are widely used building materials in the building industry due to their excellent properties of fire resistance, water resistance, corrosion resistance, insect resistance, and the like. However, the products are too heavy and inconvenient to install and carry. To solve such problems, the production of cement composite materials by adding lightweight aggregate to cement as a main raw material has become a hot spot of research. The emission reduction pressure faced by the cement industry is very severe and the task is very difficult. In order to better reduce carbon emission in the cement industry, the tail end is required to be used for decarbonizing, so that a new plant fiber cement-based composite light wallboard and a preparation method thereof are designed according to requirements.
Disclosure of Invention
The invention aims to provide a plant fiber cement-based composite light wallboard and a preparation method thereof, which solve the technical problems that the existing cement wallboard is too heavy, inconvenient to install and carry and large in carbon emission.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the plant fiber cement-based composite light wallboard comprises, by mass, 50-60 parts of cement, 5-10 parts of fly ash deposited beads, 10-20 parts of silica fume, 10-20 parts of slaked lime, 8-20 parts of quartz sand powder, 20-30 parts of water, 1-2 parts of a water reducing agent and 20-35 parts of carbonized space arundo donax straw.
Further, the light wallboard raw material formula comprises, by mass, 10 parts of quartz sand powder, 50 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 20 parts of silica fume, 1 part of a water reducing agent, 20 parts of water and 20 parts of carbonized space arundo donax straw.
Further, the light wallboard raw material formula comprises 15 parts of quartz sand powder, 45 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 12 parts of silica fume, 1.5 parts of water reducer, 18 parts of water and 25 parts of carbonized space arundo donax straw according to the mass ratio.
Further, the light wallboard raw material formula comprises, by mass, 10 parts of quartz sand powder, 40 parts of cement, 8 parts of slaked lime, 10 parts of fly ash deposited beads, 15 parts of silica fume, 2 parts of a water reducing agent, 16 parts of water and 30 parts of carbonized space arundo donax straw.
Further, the light wallboard raw material formula comprises 8 parts of quartz sand powder, 55 parts of cement, 12 parts of slaked lime, 12 parts of fly ash deposited beads, 18 parts of silica fume, 2.5 parts of water reducer, 15 parts of water and 35 parts of carbonized space arundo donax straw according to the mass ratio.
Further, the cement is one or more of silicate cement and sulphoaluminate cement, the slaked lime is reactive hydrated lime, the reactive hydrated lime uses zirconium silica fume, magnesium slag and fly ash floating beads as an admixture, and the water reducing agent is one or more of naphthalene water reducing agent and polycarboxylate water reducing agent.
Further, the preparation method of the plant fiber cement-based composite light wallboard comprises the steps of putting quartz sand into a ball mill for smashing, taking out quartz sand powder, sieving, taking out the sieved quartz sand powder, uniformly mixing the quartz sand powder with fly ash, cement, silica fume and slaked lime, adding water and a water reducing agent into the uniformly mixed powder, adding carbonized space arundo donax straws, stirring the mixed materials by using a stirrer, injecting the stirred slurry into a mould, putting the mould into a hydraulic press for molding, wherein the molding pressure is 5-30 MPa, the pressure maintaining time is 2-5 min, then taking out the board from the mould for normal temperature maintenance, the maintenance time is 48h, finally putting the maintained test block into a blast drying box at 50 ℃ for drying treatment, and taking out a sample after three days.
Further, the quartz sand is put into a ball mill for grinding for 40 minutes, and the quartz sand powder is taken out and then is sieved by a 200-325 mesh sieve.
Further, the preparation process of the carbonized space reed straw comprises the steps of crushing the space reed straw in a small crusher to obtain space reed straw with different sizes, wherein the length of the space reed straw is 5-20mm, the diameter of the space reed straw is 1-5mm, carrying out pre-hydrolysis treatment on the crushed space reed straw, carbonizing treatment to improve the fiber performance, and drying to ensure that the water content of the space reed straw is not higher than 5%, thus obtaining the carbonized space reed straw.
Further, the pre-hydrolysis treatment adopts an alkali treatment method, and the straw is soaked by the wastewater of a concrete mixing plant, so that part of pectin, lignin and hemicellulose low molecular impurities in the plant fiber are dissolved, impurities on the fiber surface are removed, the fiber surface becomes rough, and the bonding force between the fiber and a concrete interface is enhanced.
The space arundo donax is a space mutation variety, and has the advantages of simple planting management, cold resistance, freezing resistance, strong adaptability, high growth speed and high carbon fixation. The carbon dioxide discharged by enterprises is recycled through technologies such as biological carbon fixation, carbon dioxide trapping, utilization, sealing and the like.
One or more of silica fume (silicon content is more than 90%), quartz sand (silicon content is more than 90%), diatomite (silicon content is more than 90%) and fly ash deposited beads (silicon content is more than 90%) are used as main siliceous raw materials; cement and slaked lime are used as calcareous raw materials, wherein the cement is one or more of silicate cement and sulphoaluminate cement, and the slaked lime is high-reactivity hydrated lime; zirconium silica fume, magnesium slag and fly ash floating beads are used as an admixture; one or more of naphthalene water reducer and polycarboxylate water reducer are used as water reducer; the dried and dehydrated space arundo donax straw is used as light aggregate. And carrying out pre-hydrolysis treatment on the straw before drying and dewatering. The alkali treatment method is adopted, the straw is soaked by the wastewater of the concrete mixing plant, so that part of pectin, lignin, hemicellulose and other low molecular impurities in the plant fiber are dissolved, impurities on the surface of the fiber are removed, the surface of the fiber becomes rough, and the bonding capability between the fiber and the concrete interface is enhanced. At the same time, alkali treatment results in fibrillation of the fibers, i.e., splitting of the fiber bundles in the reinforcement into smaller fibers, decreasing the diameter of the fibers, increasing the aspect ratio, and increasing the effective contact surface with the matrix to increase the tensile strength and interfacial bond strength of the fibers. And then further carbonizing the fiber to improve the physical adsorptivity of the fiber, reduce worm-eating, mold, and the like.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the invention uses the straw of the space arundo donax with high carbon fixation as the light aggregate, recycles the carbon dioxide discharged by enterprises, can more effectively reduce the carbon discharge of the cement industry, provides an effective path for the subsequent work, is an ideal carbon fixation plant, and utilizes the arundo donax straw as the light aggregate to be compounded with the cement to prepare various light boards, provides technical reserve for the subsequent work of the cement industry and provides an effective path for the carbon recycling economy.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail by referring to preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the invention, and that these aspects of the invention may be practiced without these specific details.
Embodiment one:
the plant fiber cement-based composite light wallboard comprises, by mass, 10 parts of quartz sand powder, 50 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 20 parts of silica fume, 1 part of a water reducing agent, 20 parts of water and 20 parts of carbonized space arundo donax straw.
A plant fiber/cement-based composite light wallboard and a preparation method thereof. Crushing quartz sand in a ball mill, and sieving with a 200-mesh sieve; and crushing the arundo donax straws in a small crusher for 20s. 10 parts of quartz sand, 50 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads and 20 parts of silica fume are taken, pre-mixing treatment is carried out until the color of the powder is uniform, and the uniformly mixed powder is put into water mixed with 1 part of water reducer, wherein the water is 20 parts. The powder is thoroughly stirred by stirring at a stirring speed of 1500r/min for 5 minutes, and then 20 parts of space arundo donax straw is added and is regulated to a stirring speed of 2000r/min for 5 minutes. Pouring the evenly stirred slurry into a mould, then adopting 10MPa pressure for forming under a hydraulic press, and maintaining the pressure for 2min. And then moving the sample into a curing box at 25 ℃ for pre-curing, taking out the sample after curing, drying the sample, and measuring the volume weight and testing the mechanical property when the water content of the sample is lower than 10%.
Embodiment two:
the plant fiber cement-based composite light wallboard comprises 15 parts of quartz sand powder, 45 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 12 parts of silica fume, 1.5 parts of water reducer, 18 parts of water and 25 parts of carbonized space arundo donax straw according to the mass ratio.
A plant fiber/cement-based composite light wallboard and a preparation method thereof. Crushing quartz sand in a ball mill, and sieving with a 325-mesh sieve; and crushing the arundo donax straws in a small crusher for 40s. 15 parts of quartz sand, 45 parts of cement, 10 parts of slaked lime, 8 parts of fly ash deposited beads and 12 parts of silica fume are taken, premixing treatment is carried out until the color of the powder is uniform, and the uniformly mixed powder is put into water mixed with 1.5 parts of water reducer, wherein the water is 18 parts. The powder is thoroughly stirred by stirring at a stirring speed of 1500r/min for 5 minutes, and then 25 parts of space arundo donax straw is added and is regulated to a stirring speed of 2000r/min for 5 minutes. Pouring the evenly stirred slurry into a mould, then adopting 15MPa pressure molding under a hydraulic press, and maintaining the pressure for 2min. And then moving the sample into a curing box at 25 ℃ for pre-curing, taking out the sample after curing, drying the sample, and measuring the volume weight and testing the mechanical property when the water content of the sample is lower than 10%.
Embodiment III:
the plant fiber cement-based composite light wallboard comprises, by mass, 10 parts of quartz sand powder, 40 parts of cement, 8 parts of slaked lime, 10 parts of fly ash deposited beads, 15 parts of silica fume, 2 parts of a water reducing agent, 16 parts of water and 30 parts of carbonized space arundo donax straw.
A plant fiber/cement-based composite light wallboard and a preparation method thereof. Crushing quartz sand in a ball mill, and sieving with a 325-mesh sieve; and crushing the arundo donax straws in a small crusher for 50s. 10 parts of quartz sand, 40 parts of cement, 8 parts of slaked lime, 10 parts of fly ash deposited beads and 15 parts of silica fume are taken, pre-mixing treatment is carried out until the color of the powder is uniform, and the uniformly mixed powder is put into water mixed with 2 parts of water reducer, wherein the water is 16 parts. The powder is thoroughly stirred by stirring at a stirring speed of 1500r/min for 5 minutes, and then 30 parts of space arundo donax straw is added and is regulated to a stirring speed of 2000r/min for 5 minutes. Pouring the evenly stirred slurry into a mould, then adopting 18MPa pressure molding under a hydraulic press, and maintaining the pressure for 2min. And then moving the sample into a curing box at 25 ℃ for pre-curing, taking out the sample after curing, drying the sample, and measuring the volume weight and testing the mechanical property when the water content of the sample is lower than 10%.
Embodiment four:
the plant fiber cement-based composite light wallboard comprises, by mass, 8 parts of quartz sand powder, 55 parts of cement, 12 parts of slaked lime, 12 parts of fly ash deposited beads, 18 parts of silica fume, 2.5 parts of a water reducing agent, 15 parts of water and 35 parts of carbonized space arundo donax straw.
A plant fiber/cement-based composite light wallboard and a preparation method thereof. Crushing quartz sand in a ball mill, and sieving with a 325-mesh sieve; and crushing the arundo donax straws in a small crusher for 1min. 8 parts of quartz sand, 55 parts of cement, 12 parts of slaked lime, 12 parts of fly ash deposited beads and 18 parts of silica fume are taken, premixing treatment is carried out until the color of the powder is uniform, and the uniformly mixed powder is put into water mixed with 2.5 parts of water reducer, wherein the water is 15 parts. The powder is thoroughly stirred by stirring at a stirring speed of 1500r/min for 5 minutes, and then 35 parts of space arundo donax straw is added and is regulated to a stirring speed of 2000r/min for 5 minutes. Pouring the evenly stirred slurry into a mould, then adopting 20MPa pressure molding under a hydraulic press, and maintaining the pressure for 2min. And then moving the sample into a curing box at 25 ℃ for pre-curing, taking out the sample after curing, drying the sample, and measuring the volume weight and testing the mechanical property when the water content of the sample is lower than 10%.
Table 1 is a comparison of properties
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The plant fiber cement-based composite light wallboard is characterized in that: the light wallboard raw material formula consists of 50-60 parts of cement, 5-10 parts of fly ash deposited beads, 10-20 parts of silica fume, 10-20 parts of slaked lime, 8-20 parts of quartz sand powder, 20-30 parts of water, 1-2 parts of water reducer and 20-35 parts of carbonized space arundo donax straw according to mass ratio.
2. A plant fiber cement based composite lightweight wallboard according to claim 1, wherein: the light wallboard raw material formula comprises, by mass, 10 parts of quartz sand powder, 50 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 20 parts of silica fume, 1 part of a water reducing agent, 20 parts of water and 20 parts of carbonized space arundo donax straw.
3. A plant fiber cement based composite lightweight wallboard according to claim 1, wherein: the light wallboard raw material formula comprises 15 parts of quartz sand powder, 45 parts of cement, 10 parts of slaked lime, 10 parts of fly ash deposited beads, 12 parts of silica fume, 1.5 parts of water reducer, 18 parts of water and 25 parts of carbonized space arundo donax straw according to the mass ratio.
4. A plant fiber cement based composite lightweight wallboard according to claim 1, wherein: the light wallboard raw material formula comprises, by mass, 10 parts of quartz sand powder, 40 parts of cement, 8 parts of slaked lime, 10 parts of fly ash deposited beads, 15 parts of silica fume, 2 parts of a water reducing agent, 16 parts of water and 30 parts of carbonized space arundo donax straw.
5. The plant fiber cement-based composite lightweight wallboard and the preparation method thereof according to claim 1, wherein the plant fiber cement-based composite lightweight wallboard is characterized in that: the light wallboard raw material formula comprises 8 parts of quartz sand powder, 55 parts of cement, 12 parts of slaked lime, 12 parts of fly ash deposited beads, 18 parts of silica fume, 2.5 parts of water reducer, 15 parts of water and 35 parts of carbonized space arundo donax straw according to the mass ratio.
6. A plant fiber cement based composite lightweight wallboard according to claim 5, wherein: the cement is one or more of silicate cement and sulphoaluminate cement, the slaked lime is reactive hydrated lime, the reactive hydrated lime uses zirconium silica fume, magnesium slag and fly ash floating beads as an admixture, and the water reducing agent is one or more of naphthalene water reducing agent and polycarboxylate water reducing agent.
7. The method for preparing the plant fiber cement-based composite lightweight wallboard according to any one of claims 1 to 6, wherein the method comprises the following steps: grinding quartz sand in a ball mill, taking out quartz sand powder, sieving, taking out the sieved quartz sand powder, uniformly mixing the quartz sand powder with fly ash, cement, silica fume and slaked lime, adding water and a water reducing agent into the uniformly mixed powder, adding carbonized space arundo donax straws, stirring the mixed materials by using a stirrer, injecting the stirred slurry into a mould, putting the mould into a hydraulic press for molding, maintaining the pressure at 5-30 MPa for 2-5 min, taking out a plate from the mould for normal temperature maintenance, maintaining for 48h, finally putting the maintained test block into a blast drying box at 50 ℃ for drying treatment, and taking out a sample after three days.
8. The method for preparing the plant fiber cement-based composite lightweight wallboard according to claim 7, wherein the method comprises the following steps: the quartz sand is put into a ball mill for grinding for 40 minutes, and the quartz sand powder is taken out and then is sieved by a 200-325 mesh sieve.
9. The method for preparing the plant fiber cement-based composite lightweight wallboard according to claim 8, wherein the method comprises the following steps: the preparation process of the carbonized space arundo donax straw comprises the steps of crushing the space arundo donax straw in a small crusher to obtain space arundo donax straw with different sizes, wherein the length of the space arundo donax straw is 5-20mm, the diameter of the space arundo donax straw is 1-5mm, carrying out pre-hydrolysis treatment on the crushed space arundo donax straw, carbonizing to improve the fiber performance, and drying to ensure that the water content of the space arundo donax straw is not higher than 5%, thus obtaining the carbonized space arundo donax straw.
10. The method for preparing the plant fiber cement-based composite lightweight wallboard according to claim 9, wherein the method comprises the following steps: the pre-hydrolysis treatment adopts an alkali treatment method, and the straw is soaked by the wastewater of a concrete mixing plant, so that part of pectin, lignin and hemicellulose low molecular impurities in plant fibers are dissolved, impurities on the surfaces of the fibers are removed, the surfaces of the fibers become rough, and the bonding force between the fibers and a concrete interface is enhanced.
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