CN115849836B - Fiber reinforced cement concrete and preparation method thereof - Google Patents
Fiber reinforced cement concrete and preparation method thereof Download PDFInfo
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- CN115849836B CN115849836B CN202310014135.2A CN202310014135A CN115849836B CN 115849836 B CN115849836 B CN 115849836B CN 202310014135 A CN202310014135 A CN 202310014135A CN 115849836 B CN115849836 B CN 115849836B
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses fiber reinforced cement concrete and a preparation method thereof, and belongs to the technical field of concrete materials. The fiber reinforced cement concrete comprises, by weight, 30-60 parts of cement, 5-20 parts of blast furnace slag, 10-20 parts of quartz sand, 10-15 parts of a composite activator, 0.1-1.2 parts of a water reducer, 1-1.4 parts of an early strength agent, 8-15 parts of modified basalt fibers and 10-32 parts of water; the modified basalt fiber is obtained by stranding basalt fiber, dripping glue drop, and solidifying and molding. The modified basalt fiber added by the invention can improve the problem of poor bonding performance of the fiber and concrete interface, and the mixture and the modified basalt fiber are cast in an alternate adding mode, so that the basalt fiber is orderly distributed in the cement concrete, and the mechanical strength of the cement concrete is enhanced. The invention has the advantages of wide and easily available sources of raw materials, simple preparation method and suitability for large-scale popularization and production.
Description
Technical Field
The invention relates to the technical field of concrete materials, in particular to fiber reinforced cement concrete and a preparation method thereof.
Background
Cement concrete is also called ordinary concrete, and is prepared by mixing cement and sand stone as main materials, adding water, stirring, preparing cement as a cementing material according to a certain proportion, stirring, curing and the like at a later stage, and can be prepared into cement concrete which is used in construction and civil engineering. Cement concrete is the most widely used building material at present, but with the deep research, the problems of poor toughness, low tensile strength, easy shrinkage and cracking and the like of cement concrete are increasingly prominent.
The fiber material has super-strong mechanical property, so that the fiber material is used as a reinforcing material to strengthen the physical and mechanical properties of the cement concrete, and the toughness and impact resistance of a concrete matrix can be improved by bridging cracks, so that the plastic shrinkage cracking of mortar is inhibited. However, short fibers are added into the fiber reinforced cement concrete at present, the short fibers are not matched with the size of aggregate, the cooperative working performance of the fibers and a concrete matrix is not strong, the fiber mixing amount is small due to poor bonding performance of the fiber and the concrete interface, the reinforcing effect is not obvious, and when the fiber mixing amount is increased, the working performance of the concrete is obviously reduced, so that the strength of the fiber concrete is reduced, and the fiber concrete is easy to crack.
Disclosure of Invention
In order to solve the technical problems, the invention provides fiber reinforced cement concrete and a preparation method thereof.
In order to achieve the above object, the present invention provides the following solutions:
one of the technical schemes of the invention is as follows: the fiber reinforced cement concrete comprises the following raw materials in parts by weight: 30-60 parts of cement, 5-20 parts of blast furnace slag, 10-20 parts of quartz sand, 10-15 parts of composite excitant, 0.1-1.2 parts of water reducer, 1-1.4 parts of early strength agent, 8-15 parts of modified basalt fiber and 10-32 parts of water; the modified basalt fiber is obtained by stranding basalt fiber, dripping glue drop, and solidifying and molding.
Further, the material comprises the following raw materials in parts by weight: 48 parts of cement, 12 parts of blast furnace slag, 13 parts of quartz sand, 11 parts of a composite activator, 0.6 part of a water reducer, 1 part of an early strength agent, 12 parts of modified basalt fiber and 24 parts of water.
Further, the preparation method of the modified basalt fiber comprises the following steps:
(1) Stranding 50-100 basalt fibers with the diameter of 10-20 mu m to obtain basalt fiber bundles;
(2) Dripping phenolic resin colloid onto basalt fiber bundles obtained in the step (1), and solidifying, wherein the distance between every two drops is 20-50mm;
(3) Cutting basalt fiber bundles solidified with phenolic resin glue drops to obtain the modified basalt fibers.
Further, the length of the cut modified basalt fiber is 500-800mm.
Further, the grain diameters of the blast furnace slag and the quartz sand are 0.01mm-20mm.
Further, the composite activator comprises the following components in percentage by mass (10-15): (20-30): 5, fluorogypsum, sodium silicate and sodium chlorate.
Further, the water reducer is a polycarboxylic acid water reducer.
Further, the early strength agent comprises one or more of potassium sodium tartrate, sodium citrate, potassium metaphosphate and sodium lignin sulfonate.
The second technical scheme of the invention is as follows: a preparation method of fiber reinforced cement concrete comprises the following steps:
(1) Weighing the raw materials according to parts by weight, and mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water to obtain a mixture;
(2) And respectively and equally dividing the mixture and the modified basalt fiber into the same parts, and casting the mixture and the modified basalt fiber according to an alternate adding mode to obtain the fiber reinforced cement concrete.
Further, 4 parts per kilogram of aliquots were made, based on the weight of the mix.
The invention discloses the following technical effects:
(1) The modified basalt fiber added in the cement concrete is formed by combining a plurality of basalt fibers and combining the basalt fibers with glue drops, so that the structure can improve the mechanical strength of the basalt fiber on one hand, and on the other hand, the modified basalt fiber is not added in the form of chopped fibers, compared with the chopped fibers, the invention can improve the cooperative working performance of the modified basalt fiber and a concrete matrix, and improve the problem of poor bonding performance of the interface between the fiber and the concrete, thereby improving the mechanical strength of the cement concrete.
(2) In the preparation process of the cement concrete, cement, blast furnace slag, quartz sand, a composite activator, a water reducing agent, an early strength agent and water are mixed to prepare a mixture, and then the mixture is cast with modified basalt fibers in an alternate adding mode, so that the basalt fibers are orderly distributed in the cement concrete, and the casting mode can improve the adding amount of the basalt fibers in the concrete, thereby enhancing the mechanical strength of the cement concrete.
(3) The cement concrete raw material also comprises blast furnace slag solid waste, so that the reutilization of the waste is realized, the raw materials are widely and easily available in source, and the preparation method is simple and suitable for large-scale popularization and production.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The "parts" used in the examples of the present invention are "parts by weight" unless otherwise specified.
The invention provides fiber reinforced cement concrete, which comprises the following raw materials in parts by weight: 30-60 parts of cement, 5-20 parts of blast furnace slag, 10-20 parts of quartz sand, 10-15 parts of composite excitant, 0.1-1.2 parts of water reducer, 1-1.4 parts of early strength agent, 8-15 parts of modified basalt fiber and 10-32 parts of water; the modified basalt fiber is obtained by stranding basalt fiber, dripping glue drop, and solidifying and molding.
In some embodiments of the present invention, the following materials are preferably included in parts by weight: 48 parts of cement, 12 parts of blast furnace slag, 13 parts of quartz sand, 11 parts of a composite activator, 0.6 part of a water reducer, 1 part of an early strength agent, 12 parts of modified basalt fiber and 24 parts of water.
In some embodiments of the present invention, the preparation method of the modified basalt fiber includes the following steps:
(1) Stranding 50-100 basalt fibers with the diameter of 10-20 mu m to obtain basalt fiber bundles;
(2) Dripping phenolic resin colloid onto basalt fiber bundles obtained in the step (1), and solidifying, wherein the distance between every two drops is 20-50mm;
(3) Cutting basalt fiber bundles solidified with phenolic resin glue drops to obtain the modified basalt fibers.
In some embodiments of the invention, the length of the cut modified basalt fiber is 500-800mm. Compared with the chopped basalt fiber, the modified basalt fiber has longer fiber length, the size is far larger than that of aggregates such as blast furnace slag, quartz sand and the like in raw materials, the cooperative working performance with a concrete matrix is improved, adhesive drops formed by solidifying phenolic resin can also enhance the adhesive performance between the basalt fiber and the mixture matrix, and slippage caused by poor adhesive property between the fiber and the concrete is avoided.
In some embodiments of the invention, the dripping amount of the phenolic resin colloid determines the size of the sizing drops of the modified basalt fiber, and can be adjusted according to actual conditions.
In some embodiments of the invention, the blast furnace slag and quartz sand both have a particle size of 0.01mm to 20mm.
In some embodiments of the invention, the cement is ordinary silicate p.o52.5 cement purchased from henna building materials limited.
In some embodiments of the invention, the composite activator comprises the following components in percentage by mass (10-15): (20-30): 5, fluorogypsum, sodium silicate and sodium chlorate.
In some embodiments of the invention, the water reducer is a polycarboxylic acid water reducer, and specifically an LZ-2 polycarboxylic acid high-performance water reducer produced by Guiyang oasis building materials limited company is selected.
In some embodiments of the invention, the early strength agent comprises one or more of potassium sodium tartrate, sodium citrate, potassium metaphosphate, and sodium lignin sulfonate.
The invention also provides a preparation method of the fiber reinforced cement concrete, which comprises the following steps:
(1) Weighing the raw materials according to parts by weight, and mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water to obtain a mixture;
(2) And respectively and equally dividing the mixture and the modified basalt fiber into the same parts, and casting the mixture and the modified basalt fiber according to an alternate adding mode to obtain the fiber reinforced cement concrete.
In some embodiments of the invention, 4 parts per kilogram of aliquots are made, based on the weight of the mix. The modified basalt fiber of the invention is not filled in the gaps among the aggregates any more in the cement concrete, but is alternately arranged with the matrix formed by the mixture, thereby achieving the effect of reinforcing and toughening, improving the toughness of the concrete and improving the mechanical property.
All the raw materials used in the embodiment of the invention are commercially available.
The technical scheme of the invention is further described by the following examples.
Example 1
(1) Stranding 100 basalt fibers with the diameter of 15 mu m to obtain basalt fiber bundles; dripping phenolic resin colloid onto basalt fiber bundles, and solidifying at room temperature for 20min, wherein the distance between every two drops is 40mm; cutting basalt fiber bundles solidified with phenolic resin glue drops into modified basalt fibers with the length of 700 mm;
(2) Weighing the following raw materials in parts by weight: 48 parts of ordinary silicate P.O52.5 cement, 12 parts of blast furnace slag (the particle size is 10 mm), 13 parts of quartz sand (the particle size is 0.8 mm), 11 parts of composite activator (fluorogypsum, sodium silicate and sodium chlorate with the mass ratio of 15:25:5), 0.6 part of LZ-2 polycarboxylic acid high-performance water reducer, 1 part of early strength agent (sodium potassium tartrate), 12 parts of modified basalt fiber and 24 parts of water;
(3) Mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water in a stirrer to obtain a mixture;
(4) The method comprises the steps of respectively dividing the mixture and the modified basalt fiber into equal parts, dividing the mixture and the modified basalt fiber into 4 parts per kilogram according to the weight of the mixture, and casting the mixture and the modified basalt fiber in an alternate adding mode to obtain the fiber reinforced cement concrete.
Example 2
(1) Stranding 50 basalt fibers with the diameter of 10 mu m to obtain basalt fiber bundles; dripping phenolic resin colloid onto basalt fiber bundles, and solidifying at room temperature for 20min, wherein the distance between every two drops is 20mm; cutting basalt fiber bundles solidified with phenolic resin glue drops into modified basalt fibers with the length of 500 mm;
(2) Weighing the following raw materials in parts by weight: 30 parts of ordinary silicate P.O52.5 cement, 20 parts of blast furnace slag (the particle size is 20 mm), 10 parts of quartz sand (the particle size is 0.01 mm), 15 parts of composite activator (fluorogypsum, sodium silicate and sodium chlorate with the mass ratio of 10:30:5), 0.1 part of LZ-2 polycarboxylic acid high-performance water reducer, 1.4 parts of early strength agent (sodium citrate), 15 parts of modified basalt fiber and 32 parts of water;
(3) Mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water in a stirrer to obtain a mixture;
(4) The method comprises the steps of respectively dividing the mixture and the modified basalt fiber into equal parts, dividing the mixture and the modified basalt fiber into 4 parts per kilogram according to the weight of the mixture, and casting the mixture and the modified basalt fiber in an alternate adding mode to obtain the fiber reinforced cement concrete.
Example 3
(1) Stranding 100 basalt fibers with the diameter of 20 mu m to obtain basalt fiber bundles; dripping phenolic resin colloid onto basalt fiber bundles, and solidifying at room temperature for 20min, wherein the distance between every two drops is 50mm; cutting basalt fiber bundles solidified with phenolic resin glue drops into modified basalt fibers with the length of 800 mm;
(2) Weighing the following raw materials in parts by weight: 60 parts of ordinary silicate P.O52.5 cement, 5 parts of blast furnace slag (the grain diameter is 0.01 mm), 20 parts of quartz sand (the grain diameter is 20 mm), 10 parts of composite activator (fluorogypsum, sodium silicate and sodium chlorate with the mass ratio of 15:20:5), 1.2 parts of LZ-2 polycarboxylic acid high-performance water reducer, 1 part of early strength agent (potassium metaphosphate), 8 parts of modified basalt fiber and 10 parts of water;
(3) Mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water in a stirrer to obtain a mixture;
(4) The method comprises the steps of respectively dividing the mixture and the modified basalt fiber into equal parts, dividing the mixture and the modified basalt fiber into 4 parts per kilogram according to the weight of the mixture, and casting the mixture and the modified basalt fiber in an alternate adding mode to obtain the fiber reinforced cement concrete.
Example 4
(1) Stranding 100 basalt fibers with the diameter of 15 mu m to obtain basalt fiber bundles; dripping phenolic resin colloid onto basalt fiber bundles, and solidifying at room temperature for 20min, wherein the distance between every two drops is 30mm; cutting basalt fiber bundles solidified with phenolic resin glue drops into modified basalt fibers with the length of 600 mm;
(2) Weighing the following raw materials in parts by weight: 33 parts of ordinary silicate P.O52.5 cement, 6 parts of blast furnace slag (the particle size is 10 mm), 13 parts of quartz sand (the particle size is 10 mm), 14 parts of composite activator (fluorogypsum, sodium silicate and sodium chlorate with the mass ratio of 11:22:5), 1.2 parts of LZ-2 polycarboxylic acid high-performance water reducer, 1.4 parts of early strength agent (sodium lignin sulfonate), 10 parts of modified basalt fiber and 30 parts of water;
(3) Mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water in a stirrer to obtain a mixture;
(4) The method comprises the steps of respectively dividing the mixture and the modified basalt fiber into equal parts, dividing the mixture and the modified basalt fiber into 4 parts per kilogram according to the weight of the mixture, and casting the mixture and the modified basalt fiber in an alternate adding mode to obtain the fiber reinforced cement concrete.
Comparative example 1
The difference from example 1 was only that the modified basalt fiber of step (1) was replaced with an equal amount of unmodified basalt fiber, i.e. basalt fiber having a diameter of 15 μm was directly cut into a length of 700mm.
Comparative example 2
The only difference from example 1 is that step (1) is: stranding 100 basalt fibers with the diameter of 15 mu m to obtain basalt fiber bundles; the basalt fiber bundles were cut into modified basalt fibers having a length of 700mm.
Comparative example 3
The same as in example 1 was found only in that basalt fiber bundles having a cured phenolic resin glue droplet were cut into modified basalt fibers having a length of 40 mm.
Comparative example 4
The same procedure as in example 1 was repeated except that cement, blast furnace slag, quartz sand, a composite activator, a water reducing agent, an early strength agent, modified basalt fiber and water were mixed in a mixer to obtain fiber cement concrete.
Comparative example 5
The same as in example 1 is only different in that the following raw materials are weighed according to parts by weight: 66 parts of ordinary silicate P.O52.5 cement, 30 parts of blast furnace slag (the grain sizes are 10 mm), 5 parts of quartz sand (the grain sizes are 0.8 mm), 4 parts of composite activator (fluorogypsum, sodium silicate and sodium chlorate with the mass ratio of 15:25:5), 1.5 parts of LZ-2 polycarboxylic acid high-performance water reducer, 0.6 part of early strength agent (potassium sodium tartrate), 5 parts of modified basalt fiber and 38 parts of water.
Performance testing
The cement concretes prepared in examples 1 to 4 and comparative examples 1 to 5 were cut into test pieces of 150 mm. Times.150 mm, and the compressive strength, flexural strength and tensile strength after curing in a standard room of the test pieces to 28d were measured, respectively, and the results are shown in Table 1.
Table 1 compressive, flexural and tensile strength test results for cement concrete 28d
| 28d compressive Strength | 28d flexural Strength | 28d tensile Strength | |
| Example 1 | 82.6MPa | 24.6MPa | 20.4MPa |
| Example 2 | 79.2MPa | 22.1MPa | 19.8MPa |
| Example 3 | 80.3MPa | 20.9MPa | 21.7MPa |
| Example 4 | 78.4MPa | 21.3MPa | 20.7MPa |
| Comparative example 1 | 43.6MPa | 8.3MPa | 10.3MPa |
| Comparative example 2 | 38.5MPa | 7.4MPa | 9.6MPa |
| Comparative example 3 | 40.7MPa | 6.9MPa | 8.5MPa |
| Comparative example 4 | 39.9MPa | 8.3MPa | 9.7MPa |
| Comparative example 5 | 48.6MPa | 9.7MPa | 8.4MPa |
The results in Table 1 show that the compressive strength, flexural strength and tensile strength of the cement concretes prepared in inventive examples 1-4 of the present invention after curing for 28 days are significantly higher than those of the comparative examples. In the comparative example 1, basalt fibers with a single diameter of 15 μm are adopted, which can lead to mechanical properties far lower than those of the fibers bundled in the examples, in the comparative example 2, phenolic resin glue drops are omitted, the adhesion between the fibers and a mixture matrix is poor, in the comparative example 3, chopped basalt fibers are adopted, in the comparative example 4, the modified basalt fibers and other raw materials are mixed together, an alternately arranged structure is not formed, in the comparative example 5, the proportioning amount of the raw materials is changed, and the mechanical properties of the cement concrete are obviously reduced due to the change of the factors.
The reason that the embodiment of the invention has excellent mechanical properties is that the used modified basalt fiber is formed by combining a plurality of basalt fibers and combining the basalt fibers with glue drops, so that the structure can improve the mechanical strength of the basalt fiber on one hand, and on the other hand, the modified basalt fiber is not added in the form of chopped fibers, compared with the chopped fibers, the invention can improve the cooperative working performance of the modified basalt fiber and a concrete matrix, and improve the problem of poor bonding performance of the interface between the fiber and the concrete, thereby improving the mechanical strength of cement concrete. In addition, in the preparation process, cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water are firstly mixed to prepare a mixture, and then the mixture is cast with modified basalt fibers in an alternate adding mode, so that the basalt fibers are orderly distributed in the cement concrete, and the casting mode can improve the adding amount of the basalt fibers in the concrete, thereby enhancing the mechanical strength of the cement concrete.
The sulfate resistance and chloride ion permeation resistance of the cement concretes prepared in examples 1 to 4 were measured according to JGJT193-2009 "concrete durability test evaluation Standard", and the results are shown in Table 2.
TABLE 2 test results of sulfate and chloride penetration resistance grades of Cement concrete
| Anti-sulfate grade | Resistance to chloride permeation rating | |
| Example 1 | ≥KS120 | RCM-IV |
| Example 2 | ≥KS120 | RCM-IV |
| Example 3 | ≥KS120 | RCM-IV |
| Example 4 | ≥KS120 | RCM-IV |
As can be seen from table 2, the cement concrete prepared in the examples of the present invention also has excellent corrosion resistance.
The cement concrete raw material also comprises blast furnace slag solid waste, so that the reutilization of the waste is realized, the raw materials are widely and easily available in source, and the preparation method is simple and suitable for large-scale popularization and production.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The fiber reinforced cement concrete is characterized by comprising the following raw materials in parts by weight: 30-60 parts of cement, 5-20 parts of blast furnace slag, 10-20 parts of quartz sand, 10-15 parts of composite excitant, 0.1-1.2 parts of water reducer, 1-1.4 parts of early strength agent, 8-15 parts of modified basalt fiber and 10-32 parts of water;
the modified basalt fiber is obtained by stranding basalt fibers, dripping glue drops, and solidifying and molding;
the preparation method of the modified basalt fiber comprises the following steps:
(1) Stranding 50-100 basalt fibers with the diameter of 10-20 mu m to obtain basalt fiber bundles;
(2) Dripping phenolic resin colloid onto basalt fiber bundles obtained in the step (1), and solidifying, wherein the distance between every two drops is 20-50mm;
(3) Cutting basalt fiber bundles solidified with phenolic resin glue drops to obtain the modified basalt fibers;
the length of the cut modified basalt fiber is 500-800mm.
2. The fiber cement concrete according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 48 parts of cement, 12 parts of blast furnace slag, 13 parts of quartz sand, 11 parts of a composite activator, 0.6 part of a water reducer, 1 part of an early strength agent, 12 parts of modified basalt fiber and 24 parts of water.
3. The fiber cement concrete according to claim 1, wherein the blast furnace slag and the silica sand each have a particle diameter of 0.01mm to 20mm.
4. The fiber cement concrete according to claim 1, wherein the composite activator comprises (10-15) by mass: (20-30): 5, fluorogypsum, sodium silicate and sodium chlorate.
5. The fiber cement concrete according to claim 1, wherein the water reducing agent is a polycarboxylic acid water reducing agent.
6. The fiber cement concrete of claim 1, wherein the early strength agent comprises one or more of potassium sodium tartrate, sodium citrate, potassium metaphosphate, and sodium lignin sulfonate.
7. A method of preparing a fiber cement concrete according to any one of claims 1 to 6, comprising the steps of:
(1) Weighing the raw materials according to parts by weight, and mixing cement, blast furnace slag, quartz sand, a composite excitant, a water reducing agent, an early strength agent and water to obtain a mixture;
(2) And respectively and equally dividing the mixture and the modified basalt fiber into the same parts, and casting the mixture and the modified basalt fiber according to an alternate adding mode to obtain the fiber reinforced cement concrete.
8. The method for preparing fiber cement concrete according to claim 7, wherein the weight of the mixture is divided into 4 parts per kilogram.
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