CN116462465A - Betel nut shell fiber reinforced cement mortar and preparation method thereof - Google Patents
Betel nut shell fiber reinforced cement mortar and preparation method thereof Download PDFInfo
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- CN116462465A CN116462465A CN202310395754.0A CN202310395754A CN116462465A CN 116462465 A CN116462465 A CN 116462465A CN 202310395754 A CN202310395754 A CN 202310395754A CN 116462465 A CN116462465 A CN 116462465A
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- 239000000835 fiber Substances 0.000 title claims abstract description 75
- 235000006226 Areca catechu Nutrition 0.000 title claims abstract description 65
- 244000080767 Areca catechu Species 0.000 title claims abstract description 65
- 239000011083 cement mortar Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 36
- 239000004568 cement Substances 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 7
- -1 polyethylene Polymers 0.000 claims abstract description 7
- 229920000573 polyethylene Polymers 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 241000238631 Hexapoda Species 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 19
- 239000000463 material Substances 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 6
- 239000004566 building material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000002154 agricultural waste Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- 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
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
Abstract
The invention discloses betel nut shell fiber reinforced cement mortar and a preparation method thereof. Cement, sand and water are mixed according to the proportion of 1:2: uniformly stirring the mixture according to a mass ratio of 0.35 to form cement mortar, and then mixing the treated betel nut shell fibers into the mortar in an amount of 0.25% -1% of the mortar volume, and stirring the mixture by a machine until the betel nut shell fibers are uniformly distributed. And then injecting into a mould for curing and molding, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and demoulding. Curing for 7, 14 and 28 days under the condition of pond water curing (20+/-3 ℃). And (3) preparing betel nut shell fiber reinforced cement mortar. The betel nut shell fiber has the advantages of high tensile strength, good toughness and the like, and can obviously improve the mechanical strength, the shrinkage rate and the porosity of the mortar after the glass betel nut shell is added into the mortar, and simultaneously can reduce the adverse effect of the waste betel nut shell on the environment.
Description
Technical Field
The invention relates to the technical field of fiber-reinforced cement-based composite materials, in particular to betel nut shell fiber-reinforced cement mortar and a preparation method thereof.
Background
Compared with other building materials such as steel, aluminum and the like, the cement-based material is fragile (low in tensile strength and ductility), and due to the characteristic of self setting and hardening, a large number of primary microcracks, defects and gaps with different sizes exist in the cement-based material. When the external force applied to the matrix exceeds the limit load of the matrix, internal microcracks start to generate and gradually develop and expand into macroscopic cracks, and finally the whole body is damaged. Thus, fibers may be added to the cementitious material to improve its ductility. However, one major problem with these fibers is that they are relatively expensive and produce byproducts. In this regard, natural fibers such as coconut shell, jute, and betel nut shells may be used for the cement material. Although natural fiber composites are not as strong as steel and other synthetic fibers, the cost is significantly lower and these materials have little impact on the environment by reducing the level of agricultural waste treatment.
The addition of fibers to the cement matrix can improve its tensile properties. Once the cement matrix is cracked, the fibers connecting the two ends of the crack bear tensile stress, thereby playing a role in inhibiting the cracking of the crack. The fiber reinforced cement-based structure can ensure the normal working performance under the condition of stronger load pressure and large deformation. The overall structure will only be destroyed if the bond between the matrix and the fibers is broken or if the fibers reach the ultimate load value of tensile strength. Therefore, the fiber reinforced cement-based material has better tensile working performance, and particularly has larger improvement on toughness.
The betel nut shell fiber is an agricultural waste, is environment-friendly, light in weight and renewable, provides higher anti-corrosion protection, and is a sustainable building material.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of betel nut shell fiber cement mortar, which utilizes betel nut shell fiber reinforced cement mortar to solve the problems of easy cracking, dry shrinkage, poor durability and the like of the cement mortar; the prepared betel nut shell fiber cement mortar has the advantages of low price, environmental friendliness and good fracture resistance, tensile property and durability.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a preparation method of betel nut shell fiber reinforced cement mortar, which is characterized by comprising the following steps: the method comprises the following steps:
s1) mixing cement, sand and water according to a ratio of 1:2: and uniformly stirring the mixture according to the mass ratio of 0.35 to form the cement mortar.
S2) slowly and uniformly mixing the processed betel nut shell fibers into the mortar in an amount of 0.25% -1% of the volume of the mortar, and stirring by a machine until the betel nut shell fibers are uniformly distributed in the mortar mixture prepared in the step S1. The betel nut shell fiber has a plurality of grooves and excellent surface roughness, so that the bonding between the fiber and mortar is enhanced through a filling effect, and the strong and rough surface texture of the fiber can enhance the fluidity, strength, durability and shrinkage of the cement mortar; the betel nut shell fiber can make up the defect of poor tensile strength and toughness of mortar.
S3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding.
S4) curing the sample under the pond water curing condition (20+/-3 ℃) for 7 days, 14 days and 28 days to obtain the reinforced cement mortar.
The betel nut shell fiber is manually extracted from the ripe betel nut fruit, leaving a hard portion, and then soaked in room temperature (about 20 + -3 ℃) for three days for removing contaminants, removing dust particles, discarding unnecessary residues, killing all insects living in betel nut shell, and scattering the betel nut shell fiber, thereby making the fiber easy to extract. After extraction, the fibers were rewashed with water and soaked for ten days at room temperature (about 20.+ -. 3 ℃).
The cement is P.042.5 common silicate cement produced by cement company.
The sand is Huainan Huaihe river sand, and the fineness modulus of the dried sand is 2.36.
In a second aspect, the invention provides betel nut shell fiber reinforced cement mortar, which consists of the following components: cement (P.042.5 ordinary Portland cement), sand (river sand, fineness modulus 2.36), betel nut shell fiber (length 22-35mm, diameter 150-300 μm, aspect ratio (length/diameter) 117-147, water absorption (soaking extrusion method) 112%).
Compared with the prior art, the invention has the following advantages:
the invention adopts betel nut shell fiber reinforced cement mortar, and good interface bonding is formed between betel nut shell fiber and cement matrix. Meanwhile, the betel nut shell fibril cement mortar prepared by the method is environment-friendly and energy-saving in the production process, and meets the requirements of green building materials.
1. The betel nut shell fiber reinforced cement-based material has good comprehensive performance, and can overcome the problems of low tensile strength, large shrinkage deformation, obvious shrinkage cracking and serious shrinkage and brittleness of the traditional cement-based material.
2. The betel nut shell fiber used in the invention is an agricultural waste, is environment-friendly, light in weight and renewable, provides higher anti-corrosion protection, and is a sustainable building material.
3. The betel nut shell fiber has excellent surface roughness, can increase friction between the fiber and cement mortar particles in the mixture, generates better particle interlocking, and enhances bonding between the fiber and the cement mortar through filling effect. This strong and rough surface texture of the fibers creates sufficient friction to enhance the fluidity, strength, durability and shrinkage of the cement mortar; the betel nut shell fiber can make up the defect of poor tensile strength and toughness of mortar, thereby improving the shear strength and mechanical strength of the fresh concrete mixture.
4. The invention can utilize betel nut shell fiber more scientifically, has simple operation, saves energy and protects environment. The invention has reasonable formula and simple preparation method, and the finished product has better mechanical strength, shrinkage and porosity, and is suitable for the field of fiber reinforced cement-based composite materials.
Detailed Description
The technical scheme of the invention is further elaborated in the following in conjunction with examples.
The physical properties of cement are shown in Table I
Table II shows the chemical compositions of the cements and river sand used
| Sample of | CaO | SiO 2 | Al 2 O 3 | Fe 2 O 3 | SO 3 | MgO | K 2 O | MnO | P 2 O 5 |
| Cement and its preparation method | 54.43 | 24.90 | 7.51 | 3.95 | 4.76 | 2.52 | 1.10 | 0.06 | 1.9 |
| River sand | 0.85 | 84.56 | 4.55 | 4.14 | - | 0.37 | 4.18 | 0.04 | 2.61 |
The betel nut shell fiber reinforced cement mortar consists of the following components:
cement (P.042.5 ordinary Portland cement), sand (river sand, fineness modulus 2.36), betel nut shell fiber (length 22-35mm, diameter 150-300um, aspect ratio (length/diameter) 117-147, water absorption (soaking extrusion method) 112%.
The betel nut shell fiber reinforced cement mortar of the invention is prepared by manually extracting betel nut shell fibers from mature betel nut fruits, leaving hard parts, soaking for three days at room temperature (about 20+/-3 ℃) for removing pollutants, removing dust particles, discarding unnecessary residues, killing all insects living in betel nut shells, and dispersing the betel nut shell fibers, thereby facilitating the extraction of the fibers. After extraction, the fibers were rewashed with water and soaked for ten days at room temperature (about 20.+ -. 3 ℃).
The cement used was p.042.5 normal silica cement produced by cement company.
The sand is Huainan Huaihe river sand, and the fineness modulus of the dried sand is 2.36.
Example 1
The preparation method of the betel nut shell fiber reinforced cement mortar comprises the following specific steps:
s1) mixing cement, sand and water according to a ratio of 1:2: and uniformly stirring the mixture according to the mass ratio of 0.35 to form the cement mortar.
S2) the processed betel nut shell fiber is slowly and uniformly mixed into the mortar in an amount of 0.25% of the volume of the mortar, and the mixture is stirred by a machine until the mixture is uniformly distributed into the mortar mixture prepared in the step S1.
S3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding.
S4) curing the sample in the step S3 under the pond water curing condition (20+/-3 ℃) for 7 days, 14 days and 28 days to obtain the reinforced cement mortar. The resulting samples were then tested for tensile strength, compressive strength, flexural strength and porosity. The experimental results are recorded in table 3.
Example 2
The preparation method of the betel nut shell fiber reinforced cement mortar comprises the following specific steps:
s1) mixing cement, sand and water according to a ratio of 1:2: and uniformly stirring the mixture according to the mass ratio of 0.35 to form the cement mortar.
S2) the processed betel nut shell fiber is slowly and uniformly mixed into the mortar in an amount of 0.50% of the volume of the mortar, and the mixture is stirred by a machine until the mixture is uniformly distributed into the mortar mixture prepared in the step S1.
S3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding.
S4) curing the sample in the step S3 under the pond water curing condition (20+/-3 ℃) for 7 days, 14 days and 28 days to obtain the reinforced cement mortar. The resulting samples were then tested for tensile strength, compressive strength, flexural strength and porosity. The experimental results are recorded in table 3.
Example 3
The preparation method of the betel nut shell fiber reinforced cement mortar comprises the following specific steps:
s1) mixing cement, sand and water according to a ratio of 1:2: and uniformly stirring the mixture according to the mass ratio of 0.35 to form the cement mortar.
S2) the processed betel nut shell fiber is slowly and uniformly mixed into the mortar in an amount of 0.75% of the volume of the mortar, and the mixture is stirred by a machine until the mixture is uniformly distributed into the mortar mixture prepared in the step S1.
S3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding.
S4) curing the sample in the step S3 under the pond water curing condition (20+/-3 ℃) for 7 days, 14 days and 28 days to obtain the reinforced cement mortar. The resulting samples were then tested for tensile strength, compressive strength, flexural strength and porosity. The experimental results are recorded in table 3.
Example 4
The preparation method of the betel nut shell fiber reinforced cement mortar comprises the following specific steps:
s1) mixing cement, sand and water according to a ratio of 1:2: and uniformly stirring the mixture according to the mass ratio of 0.35 to form the cement mortar.
S2) the processed betel nut shell fiber is slowly and uniformly mixed into the mortar in an amount of 1.00% of the volume of the mortar, and the mixture is stirred by a machine until the mixture is uniformly distributed into the mortar mixture prepared in the step S1.
S3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding.
S4) curing the sample in the step S3 under the pond water curing condition (20+/-3 ℃) for 7 days, 14 days and 28 days to obtain the reinforced cement mortar. The resulting samples were then tested for tensile strength, compressive strength, flexural strength and porosity. The experimental results are recorded in
In table 3.
As can be seen from Table 3, the mechanical strength and the porosity of the mortar are improved along with the doping of the betel nut shell fiber, and the mechanical strength of the mortar is greatly improved when the doping amount of the betel nut shell fiber is 0.5 percent. Above this level, the intensity was reduced, but not lower than the control mixture. The betel nut shell fiber reinforced mortar material prepared by the proportioning design method can meet the requirement of mortar construction strength, can save the cement consumption to the greatest extent, greatly saves the cost and solves the ecological environment problem caused by the accumulation of a large amount of betel nut shells.
While the invention has been described with respect to the preferred embodiments, it will be understood that the invention is not limited thereto, but is capable of modification and variation without departing from the spirit of the invention, as will be apparent to those skilled in the art.
Claims (4)
1. A preparation method of betel nut shell fiber reinforced cement mortar is characterized by comprising the following steps: the method comprises the following steps:
s1) mixing cement, sand and water according to a ratio of 1:2: uniformly stirring the mixture according to the mass ratio of 0.35 to form cement mortar;
s2) slowly and uniformly mixing the processed betel nut shell fibers into the mortar in an amount which is 0.25-1% of the volume of the mortar, and stirring the mixture by a machine until the mixture is uniformly distributed in the mortar mixture prepared in the step S1;
s3) injecting the cement mortar obtained in the step S2 into a mould for curing and forming, thoroughly wrapping all mortar samples in wet cloth and polyethylene, curing for 24 hours under the indoor condition of the relative humidity of 90+/-5% and the temperature of 20+/-3 ℃, and then demoulding;
s4) curing the sample for 7, 14 and 28 days under the pond water curing condition of 20+/-3 ℃ to obtain the reinforced cement mortar.
2. The method for preparing betel nut shell fiber reinforced cement mortar according to claim 1, wherein:
the betel nut shell fiber in the step S2 is extracted from the mature betel nut fruits, a hard part is left, and then the betel nut shell fiber is soaked in room temperature for three days to remove pollutants, remove dust particles, discard unnecessary residues, kill all insects living in betel nut shells, and scatter the betel nut shell fiber, so that the fiber is easy to extract; after extraction, the fibers were re-washed with water and soaked for ten days at room temperature.
3. The method for preparing the modified betel nut shell fiber reinforced cement mortar according to claim 2, which is characterized in that:
the cement in the step S1 is P.042.5 ordinary Portland cement; the sand is Huainan Huaihe river sand, and the screening fineness modulus after drying is 2.36.
4. The betel nut shell fiber reinforced cement mortar is characterized in that: a product prepared by the process of any one of claims 1 to 3, comprising the following components: cement, sand and betel nut shell fiber; the sand is river sand, and the fineness modulus of the sand is 2.36; the betel nut shell fiber has a length of 22-35mm, a diameter of 150-300 μm, an aspect ratio, i.e. length/diameter, of 117-147 and a water absorption of 112% according to a soaking extrusion method.
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| CN202310395754.0A CN116462465A (en) | 2023-04-14 | 2023-04-14 | Betel nut shell fiber reinforced cement mortar and preparation method thereof |
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| CN202310395754.0A CN116462465A (en) | 2023-04-14 | 2023-04-14 | Betel nut shell fiber reinforced cement mortar and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674791A (en) * | 2011-03-18 | 2012-09-19 | 棕纤环保科技有限公司 | Sheet material made of oil palm fibres and magnesium oxide and method for producing same |
| CN112010608A (en) * | 2020-09-16 | 2020-12-01 | 福州大学 | Manufacturing method of green high-ductility fiber concrete hollow building block |
| WO2021115636A1 (en) * | 2019-12-13 | 2021-06-17 | carbonauten GmbH | Carbon as filler for a carrier matrix |
| CN115612306A (en) * | 2022-11-11 | 2023-01-17 | 长沙理工大学 | Composite modified asphalt and preparation method thereof |
-
2023
- 2023-04-14 CN CN202310395754.0A patent/CN116462465A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674791A (en) * | 2011-03-18 | 2012-09-19 | 棕纤环保科技有限公司 | Sheet material made of oil palm fibres and magnesium oxide and method for producing same |
| WO2021115636A1 (en) * | 2019-12-13 | 2021-06-17 | carbonauten GmbH | Carbon as filler for a carrier matrix |
| CN112010608A (en) * | 2020-09-16 | 2020-12-01 | 福州大学 | Manufacturing method of green high-ductility fiber concrete hollow building block |
| CN115612306A (en) * | 2022-11-11 | 2023-01-17 | 长沙理工大学 | Composite modified asphalt and preparation method thereof |
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