CN112297528A - Cement-based composite material blanket based on sandwich mesh cloth and preparation method thereof - Google Patents

Cement-based composite material blanket based on sandwich mesh cloth and preparation method thereof Download PDF

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Publication number
CN112297528A
CN112297528A CN202010869969.8A CN202010869969A CN112297528A CN 112297528 A CN112297528 A CN 112297528A CN 202010869969 A CN202010869969 A CN 202010869969A CN 112297528 A CN112297528 A CN 112297528A
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mesh
cement
sandwich
cloth
dry powder
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俞学洲
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Aminai mahmouti
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a cement-based composite material blanket based on sandwich mesh cloth and a preparation method thereof, wherein the cement-based composite material blanket comprises the sandwich mesh cloth, the sandwich mesh cloth comprises a mesh surface layer uniformly distributed with mesh holes, a plain cloth bottom layer and connecting monofilaments for connecting the mesh surface layer and the plain cloth bottom layer, a curable dry powder material is filled in the sandwich mesh cloth, and waterproof polymer cement layers are coated on the top surface and two sides of the sandwich mesh cloth; the dry powder material is formed by mixing cement and sand according to the mass ratio of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of silicate cement, and the sand is dry river sand and/or sea sand. After the polymer cement is coagulated, the meshes can be firmly fixed, so that the cement material is difficult to move or leak in the mesh body; the polymer cement material has good flexibility and waterproof effect, and is bonded with a cement material matrix with good interfacial property, so that the polymer cement material is solidified into a firm whole, and the anti-seepage effect of the material blanket is ensured. The preparation method is simple and reliable, and is convenient to install and construct.

Description

Cement-based composite material blanket based on sandwich mesh cloth and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to a cement-based composite material blanket based on sandwich mesh cloth.
Background
With the rapid development of society, higher requirements are put forward on engineering quality and construction efficiency. The construction area is more in the areas with dangerous terrain, complicated geology and difficult realization of traditional concrete construction. In addition, new technological materials are urgently needed for important and dangerous projects such as landslide control, river bank reinforcement, interception of drainage channels, underwater pipeline maintenance, building roof water leakage treatment and the like. Traditional concrete needs a large amount of construction machinery to cooperate, occupies a large amount of places. Second, concrete canvas (concrete canvas) was first developed in 2004 in the uk, and similar materials (cement blankets) were developed in recent years in domestic countries. For various reasons, the price is extremely high, and the large-area popularization is difficult. In order to change the above current situation, a new preparation method is urgently needed to meet the current demand.
Although the traditional concrete technology is gradually improved, the concrete raw materials generally exist, the price is low, the purchase is convenient, compared with the auxiliary construction of main engineering, a large amount of equipment is needed for construction, the concrete is difficult to move randomly, and the environmental pollution is easily caused in the construction process. The concrete canvas (cement blanket) which has appeared in recent years is composed of a special fiber woven material and dry powder concrete. The composition of the dry powder material is complex, and the filling mode of the dry powder material is mainly that the dry powder is injected into a fabric material cavity or the dry powder is easy to enter the cavity due to mesh enlargement caused by stretching warp and weft surfaces of the fiber fabric; in the preparation process, the sealing link is to brush the bonding material and cover the PVC waterproof material. These processes are highly susceptible to loss, run-off and loss of dry powder material. In the construction link, the connecting material of the cement blanket is organic materials such as sealant or bonding material, and the interface problem of waterproof materials such as pvc and the like and the concrete matrix can cause the water leakage phenomenon at the connecting position.
Disclosure of Invention
In view of the technical shortcomings, the invention aims to provide a sandwich mesh fabric-based cement-based composite material blanket and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a cement-based composite material blanket based on sandwich mesh cloth, which comprises the sandwich mesh cloth, wherein the sandwich mesh cloth comprises a mesh surface layer, a plain cloth bottom layer and connecting monofilaments, wherein mesh holes are uniformly distributed on the mesh surface layer, the plain cloth bottom layer and the connecting monofilaments are connected with the mesh surface layer and the plain cloth bottom layer; the dry powder material is formed by mixing cement and sand according to the mass ratio of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of silicate cement, and the sand is dry river sand and/or sea sand.
Preferably, the mesh diameter/side length of the mesh surface layer is 1mm-2 mm.
Preferably, the thickness of the sandwich mesh cloth is 1-3 cm.
Preferably, the sandwich mesh cloth has a thickness of 1cm and a weight of more than 1kg per square meter.
Preferably, the portland cement is numbered above 425 #.
Preferably, the mass ratio of the river sand and/or sea sand with fineness modulus below 2.2 is not less than 70%.
Preferably, the river sand and/or sea sand has a mud content of no more than 2%.
Preferably, the waterproof polymer cement has a mark number not less than 425# and a mass proportion of 50-60%.
The invention also provides a preparation method of the cement-based composite material blanket based on the sandwich mesh cloth, which comprises the following steps:
s1, opening the whole roll of sandwich mesh cloth and placing the sandwich mesh cloth on a vibration platform, wherein the mesh surface layer faces upwards;
s2, placing the stirred dry powder material on a mesh, and uniformly distributing the mesh on a scraper;
s3, operating the vibrating machine for 10-15 seconds, and moving the floating brush back and forth for a plurality of times to smooth the surface of the dry powder material;
s4, conveying the mesh cloth filled with the dry powder material to a press roller by using a conveyor belt, rolling the mesh cloth for 1-2 times by using the press roller under pressure on the mesh cloth to tamp the dry powder material and expose meshes of the mesh cloth out of the surface of the dry powder material, and conveying the mesh cloth to a spraying and smearing machine platform along with the conveyor belt;
s5, smearing the polymer cement on the upper surface and two sides of the mesh by a spraying and smearing machine, and slightly smearing the polymer cement on the surface by a rear scraper of the spraying and smearing machine;
s6, conveying the mesh concrete to a baking platform by a conveyor belt, baking for 10 minutes at 70-80 ℃, wrapping by a preservative film, rolling up, and carrying out vacuum packaging to obtain a finished product.
Preferably, the weight of the dry powder material per square meter is not less than 14kg on a 1cm thick sandwich mesh.
The invention has the beneficial effects that: the preparation method is simple and reliable, the preparation assembly line is convenient to disassemble and assemble, and the requirements of preparation on a construction site, field installation and construction are met. After the polymer cement material is condensed, the mesh can be firmly fixed, so that the dry powder material is difficult to move or leak in the cavity of the mesh; the polymer cement material has good flexibility and waterproof effect, and is bonded with a cement material matrix with good interfacial property, so that the polymer cement material is solidified into a firm whole, and the anti-seepage effect of the material blanket is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sandwich mesh fabric-based cement-based composite blanket and a preparation method thereof according to an embodiment of the present invention.
Description of reference numerals:
1-mesh surface layer, 2-plain cloth bottom layer, 3-connecting monofilament, 4-dry powder material and 5-waterproof polymer cement layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the cement-based composite blanket based on the sandwich mesh cloth comprises the sandwich mesh cloth, wherein the sandwich mesh cloth comprises a mesh surface layer uniformly distributed with mesh holes, a plain cloth bottom layer and connecting monofilaments connecting the mesh surface layer and the plain cloth bottom layer, a curable dry powder material is filled in the sandwich mesh cloth, and waterproof polymer cement layers are coated on the mesh surface and two sides of the sandwich mesh cloth.
Example 1
The dry powder material is formed by mixing cement and sand according to the proportion of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of portland cement, the sand is dry river sand, the thickness of the sandwich mesh is 1cm, the weight of each square meter is 1.1kg, the diameter/side length of meshes of the mesh surface layer is 1mm, the label of the portland cement is more than 425#, the river sand is dry fine sand, the mud content of the river sand is less than 2%, the mass proportion of the sand with the fineness modulus of less than 2.2 is 70%, the label of the waterproof polymer cement is not less than 425#, and the mass proportion of the waterproof polymer cement is 50%.
Example 2
The dry powder material is formed by mixing cement and sand according to a ratio of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of portland cement, the sand is the dry sea sand mesh surface layer, the mesh diameter/side length is 1mm-2mm, the thickness of the sandwich mesh is 2cm, the weight of the sandwich mesh per square meter is 1.2kg, the label of the portland cement is more than 425#, the sea sand is the dry fine sand, the mud content of the sea sand is less than 2%, the fineness modulus is 75% below 2.2, the label of the waterproof polymer cement is not less than 425#, and the mass percentage is 55%.
Example 3
The dry powder material is formed by mixing cement and sand according to the proportion of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of portland cement, the sand is a mixture of dried river sand and sea sand, the diameter of the mesh surface layer is 2mm, the thickness of the sandwich mesh cloth is 3cm, the thickness of the sandwich mesh cloth is 1cm, the weight of the sandwich mesh cloth per square meter is 1.3kg, and the label of the portland cement is more than 425 #. The river sand and sea sand are dry fine sand, the mud content is less than 2%, the fineness modulus is 78% below 2.2, the mark number of the waterproof polymer cement is not less than 425#, and the mass percentage is 60%.
And (3) performance detection:
1. the test method comprises the following steps: the cement-based composite material blanket of the sandwich mesh cloth of the embodiment 2 is subjected to watering solidification, and is sent to a detection mechanism after being continuously maintained for 28 days according to GB/T15231_2008 chapters 8 and 5; GB/T7019_2014 detects under the rules of chapters 7 and 9.
2. And (4) conclusion: the compression strength is 39Mpa, the impact strength is 19.8KJ/M2, the frost resistance does not have the phenomena of layer formation, peeling and the like after 25 times of freeze-thaw cycles, and the waterproof effect is obvious.
The invention also provides a preparation method of the cement-based composite material blanket based on the sandwich mesh cloth, which is characterized by comprising the following steps of:
s1, opening the whole roll of sandwich mesh cloth and placing the sandwich mesh cloth on a vibration platform, wherein the mesh surface layer faces upwards;
s2, placing the stirred dry powder material on a mesh, and uniformly distributing the mesh on a scraper;
s3, operating the vibration machine for 10-15 seconds, wherein the floating brush moves back and forth for 3 times to smooth the surface of the dry powder material;
s4, conveying the mesh filled with the dry powder material to a press roller by using a conveyor belt, rolling the mesh for 1-2 times by using the press roller under pressure on the mesh, and conveying the mesh to a spraying and smearing machine platform along with the conveyor belt;
s5, smearing the polymer cement on the upper surface and two sides of the mesh by a spraying and smearing machine, and slightly smearing the polymer cement on the surface by a rear scraper of the spraying and smearing machine;
s6, conveying the mesh concrete to a baking platform by a conveyor belt, baking for 10 minutes at 70-80 ℃, wrapping by a preservative film, rolling up, and carrying out vacuum packaging to obtain a finished product.
Preferably, the weight of the dry powder material per square meter is not less than 14kg on a 1cm thick sandwich mesh.
When the carpet is used, the carpet is cut and lapped into a required shape and area according to construction requirements, the usage method comprises the steps of longitudinally laying, transversely lapping, pressing the carpet at a high position to a low position, smearing 425# portland cement paste with the thickness of 1-2 mm at the lapping position, fixing the carpet by stainless steel screws (the length of the screws is not longer than the thickness of the double-layer composite material carpet, and the interval between the screws is not more than 5 cm), and immediately sprinkling water (not less than 9 kilograms per square meter) on the flat cloth surface of the composite material carpet. The following special indications are that: in order to achieve the solidification effect of the later-period composite material blanket, necessary watering, covering and curing are necessary within the first fourteen days after construction.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The cement-based composite material blanket based on the sandwich mesh cloth comprises the sandwich mesh cloth, wherein the sandwich mesh cloth comprises a mesh surface layer uniformly distributed with mesh holes, a plain cloth bottom layer and connecting monofilaments for connecting the mesh surface layer and the plain cloth bottom layer; the dry powder material is formed by mixing cement and sand according to the mass ratio of 1:1, wherein the cement comprises 20% of sulphoaluminate cement and 80% of silicate cement, and the sand is dry river sand and/or sea sand.
2. The sandwich mesh fabric-based cementitious composite blanket of claim 1, wherein said mesh facing has a mesh diameter/side length of 1mm to 2 mm.
3. The sandwich mesh-based cementitious composite blanket as claimed in claim 1 wherein the sandwich mesh has a thickness of 1-3 cm.
4. The sandwich mesh fabric-based cementitious composite blanket according to claim 3, wherein the sandwich mesh fabric has a thickness of 1cm and a weight per square meter of more than 1 kg.
5. The sandwich mesh fabric-based cementitious composite blanket of claim 1 wherein the portland cement is numbered 425# or greater.
6. The sandwich mesh fabric-based cement-based composite blanket as claimed in claim 1, wherein the mass ratio of river sand and/or sea sand with fineness modulus below 2.2 is not less than 70%.
7. The sandwich mesh fabric-based cementitious composite blanket of claim 6, wherein said river and/or sea sand has a silt content of not more than 2%.
8. The sandwich mesh fabric-based cement-based composite material blanket as claimed in claim 1, wherein the waterproof polymer cement has a designation no less than 425# and a mass ratio of 50-60%.
9. The method for manufacturing a sandwich mesh fabric based cement based composite carpet as claimed in any of the claims 1-8, comprising the steps of:
s1, opening the whole roll of sandwich mesh cloth and placing the sandwich mesh cloth on a vibration platform, wherein the mesh surface layer faces upwards;
s2, placing the stirred dry powder material on a mesh, and uniformly distributing the mesh on a scraper;
s3, operating the vibrating machine for 10-15 seconds, and moving the floating brush back and forth for a plurality of times to smooth the surface of the dry powder material;
s4, conveying the mesh cloth filled with the dry powder material to a press roller by using a conveyor belt, rolling the mesh cloth for 1-2 times by using the press roller under pressure on the mesh cloth to tamp the dry powder material and expose meshes of the mesh cloth out of the surface of the dry powder material, and conveying the mesh cloth to a spraying and smearing machine platform along with the conveyor belt;
s5, smearing the polymer cement on the upper surface and two sides of the mesh by a spraying and smearing machine, and slightly smearing the polymer cement on the surface by a rear scraper of the spraying and smearing machine;
s6, conveying the mesh concrete to a baking platform by a conveyor belt, baking for 10 minutes at 70-80 ℃, wrapping by a preservative film, rolling up, and carrying out vacuum packaging to obtain a finished product.
10. The method of claim 9, wherein the weight of the dry powder material per square meter is not less than 14kg on a 1cm thick sandwich web.
CN202010869969.8A 2020-08-26 2020-08-26 Cement-based composite material blanket based on sandwich mesh cloth and preparation method thereof Pending CN112297528A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059020A (en) * 2022-07-13 2022-09-16 浙江省围海建设集团股份有限公司 Sea wall curing method and sea wall
CN116330758A (en) * 2022-03-01 2023-06-27 山东土工侠信息科技有限公司 Cement blanket and manufacturing method and application thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116330758A (en) * 2022-03-01 2023-06-27 山东土工侠信息科技有限公司 Cement blanket and manufacturing method and application thereof
CN116330758B (en) * 2022-03-01 2024-03-01 山东土工侠信息科技有限公司 Cement blanket and manufacturing method and application thereof
CN115059020A (en) * 2022-07-13 2022-09-16 浙江省围海建设集团股份有限公司 Sea wall curing method and sea wall

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