CN112759335A - Preparation method of 3D printing cement noise reduction barrier based on graphene sound absorption cotton fiber base material - Google Patents
Preparation method of 3D printing cement noise reduction barrier based on graphene sound absorption cotton fiber base material Download PDFInfo
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- CN112759335A CN112759335A CN202110133576.5A CN202110133576A CN112759335A CN 112759335 A CN112759335 A CN 112759335A CN 202110133576 A CN202110133576 A CN 202110133576A CN 112759335 A CN112759335 A CN 112759335A
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- noise reduction
- cement
- reduction barrier
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0035—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with undulated surfaces
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Composite Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a preparation method of a 3D printing cement noise reduction barrier based on a graphene/sound absorption cotton fiber base material, which comprises the following steps: s1, preparing the graphene/sound-absorbing cotton fiber base material reinforced composite cement: s2, 3D printing a cement noise reduction barrier unit body: s3, building a cement noise reduction barrier. The reinforced composite cement based on the graphene/sound-absorbing cotton fiber base material has good pumping performance, extrudability and cohesiveness, high strength, good plasticity, good space forming and shaping capabilities, can be used for preparing a noise reduction barrier with a complex structure and shape, has good sound insulation and noise reduction effects, is integrally assembled without using a template, reduces the construction difficulty, shortens the construction time, reduces the manufacturing cost, greatly reduces field constructors, is low-carbon, energy-saving, green, environment-friendly, corrosion-resistant, strong in weather resistance, long in service life and good in social benefit and economic benefit.
Description
Technical Field
The invention relates to the technical field of noise reduction and sound insulation, in particular to a preparation method of a 3D printing cement noise reduction barrier based on a graphene/sound absorption cotton fiber base material.
Background
Noise pollution of highways has become one of the major problems of acoustic environments. The noise seriously influences normal life and work of people and produces harm to physical and mental health of people, the traditional sound barrier has long construction period and short service life, and the common cement sound barrier is a cement veneer which is generally of a planar structure, so the noise reduction effect is not ideal.
As a high and new technology rising in recent years, 3D printing has achieved many results in the fields of mold manufacturing, industrial design, and the like, and its application in the fields of construction and the like has not been made. The 3D printing concrete technology is a brand new attempt of 3D printing and has a huge development space. The 3D printing technology realizes integral forming through a digital model and a layered manufacturing method, can manufacture complex and diversified buildings which are difficult to build in a traditional mode, does not need to use a template, reduces the construction difficulty, shortens the construction time, reduces the construction cost, greatly reduces field constructors and improves the operation safety. In addition, the method has the advantages of individuation, low carbon, energy conservation, environmental protection, long service life and the like, and has good social benefit and economic benefit.
Compared with the traditional cement concrete, the 3D printing technology has higher requirements on the construction performance, the mechanical property, the functionality and the like of the cement-based composite material, the printed cement-based material has good pump-out property, extrudability, constructability, thixotropy, cohesiveness and the like, and the traditional cement is difficult to meet the performance requirements and cannot be directly used as a 3D printed building material.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the invention provides a preparation method of a 3D printing cement noise reduction barrier based on a graphene/sound absorption cotton fiber base material.
The technical scheme adopted by the invention for solving the technical problems is as follows: a preparation method of a 3D printing cement noise reduction barrier based on a graphene/sound absorption cotton fiber base material comprises the following steps:
s1, preparing the graphene/sound-absorbing cotton fiber base material reinforced composite cement:
s1-1, mixing 100 parts of portland cement, 100 parts of quartz sand, 10 parts of mineral powder, 10 parts of fast-hardening sulphoaluminate cement, 10 parts of calcined clay and 2 parts of sound-absorbing cotton fiber in proportion, adding the mixture into a concrete electric stirrer, and stirring for 5min after the rotating speed of the stirrer is set to be 60r/min until the mixture is completely and uniformly mixed;
s1-2, mixing and stirring water and 0.2 part of water reducing agent in a clean container until the water and the water reducing agent are uniform, then adding the mixture into a stirrer in a working state, and stirring for 5min after the rotating speed of the stirrer is set to be 60 r/min;
s1-3, adding 5 parts of graphene dispersion liquid into a stirrer in a working state, and stirring for 10min after the rotating speed of the stirrer is set to be 100r/min to obtain the 3D printing graphene/sound absorption cotton fiber base material reinforced composite cement;
s2, 3D printing a cement noise reduction barrier unit body:
s2-1, completing three-dimensional CAD modeling of the noise reduction barrier through computer modeling software, inputting the noise reduction barrier into a cement 3D printing and forming system after STL data conversion, and then slicing in layers;
s2-2, setting 3D printing parameters, establishing a 3D printing program, and sending the reinforced composite cement slurry into a feeding system communicated with a printing nozzle to perform layer-by-layer printing to obtain a noise reduction barrier unit body;
s3, building a cement noise reduction barrier:
s3-1, maintaining the noise reduction barrier unit bodies for fifteen days, and transporting the units to a highway for hoisting and splicing;
and S3-2, assembling by taking the upper wedge and the lower wedge of the noise reduction barrier unit body as a reference during splicing, coating cement slurry at the adjacent joint of the noise reduction barrier unit body, wherein the height and the length of the noise reduction barrier can be determined according to the noise condition of a specific road section, and the height of the noise reduction barrier is 4-5 m.
Preferably, in step S1-1, the type of the portland cement is p.o.42.5r, the particle size of the quartz sand is 30-150 mesh, the mineral powder is S95-grade mineral powder, the type of the fast hardening sulfoaluminate cement is r.sac.42.5, the calcined clay is kaolinite clay, and the sound-absorbing cotton fiber is polyester sound-absorbing cotton fiber.
Further, in step S1-2, the water reducing agent is a powdery polycarboxylic acid water reducing agent.
Specifically, in step S1-3, the graphene is graphene oxide with a sheet diameter of 3-5 μm, the graphene oxide is dispersed by using deionized water in a mode of combining ultrasonic waves with an ice water bath, the power of an ultrasonic instrument is 600w, and the cumulative duration of ultrasonic action is 60 min.
The invention has the beneficial effects that: the reinforced composite cement based on the graphene/sound-absorbing cotton fiber base material has good pumping performance, extrudability and cohesiveness, high strength, good plasticity, good space forming and shaping capabilities, can be used for preparing a noise reduction barrier with a complex structure and shape, has good sound insulation and noise reduction effects, is integrally assembled without using a template, reduces construction difficulty, shortens construction time, reduces construction cost, greatly reduces field constructors, is low-carbon, energy-saving, green, environment-friendly, long in service life and has good social benefits and economic benefits.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of a noise reduction barrier unit body manufactured by the present invention.
In the figure: 1. the noise reduction device comprises a body part, 2 noise reduction ribs, 3 noise reduction grooves, 4 sound dissipation flow line grooves, 5 convex strips and 6 clamping grooves.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
A preparation method of a 3D printing cement noise reduction barrier based on a graphene/sound absorption cotton fiber base material comprises the following steps: s1, preparing the reinforced composite cement of the graphene/sound-absorbing cotton fiber base material; s2, 3D printing a cement noise reduction barrier unit body; s3, building a cement noise reduction barrier.
Step S1 specifically includes:
s1-1, mixing 100 parts of portland cement, 100 parts of quartz sand, 10 parts of mineral powder, 10 parts of fast-hardening sulphoaluminate cement, 10 parts of calcined clay and 2 parts of sound-absorbing cotton fiber in proportion, adding the mixture into a concrete electric stirrer, and stirring for 5min after the rotating speed of the stirrer is set to be 60r/min until the mixture is completely and uniformly mixed;
s1-2, mixing and stirring water and 0.2 part of water reducing agent in a clean container until the water and the water reducing agent are uniform, then adding the mixture into a stirrer in a working state, and stirring for 5min after the rotating speed of the stirrer is set to be 60 r/min;
and S1-3, adding 5 parts of graphene dispersion liquid into a stirrer in a working state, and stirring for 10min after the rotating speed of the stirrer is set to be 100r/min to obtain the 3D printing graphene/sound absorption cotton fiber base material reinforced composite cement.
Preferably, the type of the portland cement is P.O.42.5R; the particle size of the quartz sand is 30-150 meshes.
The mineral powder is S95 grade mineral powder, the activity of S95 grade mineral powder is good, and the weight of the noise reduction barrier can be reduced.
The type of the quick-hardening sulphoaluminate cement is R.SAC.42.5, and the setting time of the cement can be adjusted by taking the quick-hardening sulphoaluminate cement as a setting regulator.
The calcined clay is kaolinite clay, and the calcined clay can be mixed with water to generate hydration reaction to generate a gel product with crosslinking performance, and the gel product can be well combined with cement, so that materials have stronger adhesion performance, a good bonding effect can be formed, and a member has good deformation resistance.
Inhale sound cotton fiber and inhale the sound cotton fiber for polyester, length is 2 ~ 6mm, inhales sound cotton fiber and can not only improve the sound effect of inhaling of the protective screen of making an uproar, and the toughness and the intensity of the fiber concrete material of preparation are better.
The water reducing agent is a powdery polycarboxylic acid water reducing agent, and the rheological property of cement can be adjusted through the water reducing agent.
Graphene adopted by the graphene dispersion liquid is graphene oxide with the sheet diameter of 3-5 mu m, deionized water is adopted during preparation, the graphene oxide is dispersed in a mode of combining ultrasonic waves with ice water bath, the power of an ultrasonic instrument is 600w, and the accumulated ultrasonic action time is 60min, so that the graphene dispersion liquid can be obtained.
Step S2 specifically includes:
s2-1, completing three-dimensional CAD modeling of the noise reduction barrier through computer modeling software, inputting the noise reduction barrier into a cement 3D printing and forming system after STL data conversion, and then slicing in layers;
s2-2, setting 3D printing parameters, establishing a 3D printing program, and sending the reinforced composite cement slurry into a feeding system communicated with a printing nozzle to perform layer-by-layer printing to obtain the noise reduction barrier unit body.
As shown in fig. 1, the noise reduction barrier unit body obtained by the above preparation method includes a body portion 1, wherein a protruding strip 5 is arranged on an upper plane of the body portion 1, and a clamping groove 6 capable of being clamped and matched with the protruding strip 5 to realize splicing between the barrier unit bodies is arranged on a bottom plane of the body portion 1.
The front of the body part 1 facing the highway side is provided with four noise reduction convex edges 2 traversing the width direction of the body part 1, the four noise reduction convex edges 2 are horizontally arranged in parallel at intervals from top to bottom, a noise reduction groove 3 is formed between every two adjacent noise reduction convex edges 2, the inclined planes at the two sides of each noise reduction convex edge 2 are respectively provided with three sound dissipation flow grooves 4 linearly arranged along the sound wave direction of the highway, the three sound dissipation flow grooves 4 are arranged in parallel at intervals, and the cross sections of the sound dissipation flow grooves 4 are semicircular.
The cross section of the noise reduction ridge 2 and the noise reduction groove 3 is in a 45-degree sawtooth wave shape, and the peak height of the sawtooth wave is 150-200 mm.
Step S3 specifically includes:
s3-1, maintaining the noise reduction barrier unit bodies for fifteen days, and transporting the units to a highway for hoisting and splicing;
and S3-2, splicing and assembling by taking the convex strips 5 on the upper plane of the body part 1 of the noise reduction barrier unit body and the clamping grooves 6 on the bottom plane of the body part 1 as references during splicing, coating cement slurry on adjacent joints of the noise reduction barrier unit body, wherein the height and the length of the noise reduction barrier can be determined according to the noise condition of a specific road section, and the height of the noise reduction barrier is 4-5 m.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. A preparation method of a 3D printing cement noise reduction barrier based on graphene/sound absorption cotton fiber base materials is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing the graphene/sound-absorbing cotton fiber base material reinforced composite cement:
s1-1, mixing 100 parts of portland cement, 100 parts of quartz sand, 10 parts of mineral powder, 10 parts of fast-hardening sulphoaluminate cement, 10 parts of calcined clay and 2 parts of sound-absorbing cotton fiber in proportion, adding the mixture into a concrete electric stirrer, and stirring for 5min after the rotating speed of the stirrer is set to be 60r/min until the mixture is completely and uniformly mixed;
s1-2, mixing and stirring water and 0.2 part of water reducing agent in a clean container until the water and the water reducing agent are uniform, then adding the mixture into a stirrer in a working state, and stirring for 5min after the rotating speed of the stirrer is set to be 60 r/min;
s1-3, adding 5 parts of graphene dispersion liquid into a stirrer in a working state, and stirring for 10min after the rotating speed of the stirrer is set to be 100r/min to obtain the 3D printing graphene/sound absorption cotton fiber base material reinforced composite cement;
s2, 3D printing a cement noise reduction barrier unit body:
s2-1, completing three-dimensional CAD modeling of the noise reduction barrier through computer modeling software, inputting the noise reduction barrier into a cement 3D printing and forming system after STL data conversion, and then slicing in layers;
s2-2, setting 3D printing parameters, establishing a 3D printing program, and sending the reinforced composite cement slurry into a feeding system communicated with a printing nozzle to perform layer-by-layer printing to obtain a noise reduction barrier unit body;
s3, building a cement noise reduction barrier:
s3-1, maintaining the noise reduction barrier unit bodies for fifteen days, and transporting the units to a highway for hoisting and splicing;
and S3-2, assembling by taking the upper wedge and the lower wedge of the noise reduction barrier unit body as a reference during splicing, coating cement slurry at the adjacent joint of the noise reduction barrier unit body, wherein the height and the length of the noise reduction barrier can be determined according to the noise condition of a specific road section, and the height of the noise reduction barrier is 4-5 m.
2. The method of preparing a 3D printed cementitious noise reduction barrier based on graphene/acoustic cotton fiber substrate as claimed in claim 1, wherein: in the step S1-1, the type of the portland cement is P.O.42.5R, the particle size of the quartz sand is 30-150 meshes, the mineral powder is S95-grade mineral powder, the type of the fast hardening sulphoaluminate cement is R.SAC.42.5, the calcined clay is kaolinite clay, and the sound-absorbing cotton fiber is polyester sound-absorbing cotton fiber.
3. The method of preparing a 3D printed cementitious noise reduction barrier based on graphene/acoustic cotton fiber substrate as claimed in claim 1, wherein: in step S1-2, the water reducing agent is a powdery polycarboxylic acid water reducing agent.
4. The method of preparing a 3D printed cementitious noise reduction barrier based on graphene/acoustic cotton fiber substrate as claimed in claim 1, wherein: in the step S1-3, the graphene is graphene oxide with the sheet diameter of 3-5 μm, the graphene oxide is dispersed by adopting deionized water in a mode of combining ultrasonic waves with ice water bath, the power of an ultrasonic instrument is 600w, and the accumulated time of ultrasonic action is 60 min.
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