CN112296051A - Preparation and application method of dense mesh dust suppression net for constructional engineering - Google Patents
Preparation and application method of dense mesh dust suppression net for constructional engineering Download PDFInfo
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- CN112296051A CN112296051A CN202010310063.2A CN202010310063A CN112296051A CN 112296051 A CN112296051 A CN 112296051A CN 202010310063 A CN202010310063 A CN 202010310063A CN 112296051 A CN112296051 A CN 112296051A
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- dust suppression
- net
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- dense mesh
- film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D105/00—Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00
- C09D105/04—Alginic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The invention provides a dense mesh dust suppression net for constructional engineering, which consists of a dense mesh net and a dust suppression film, wherein the dust suppression film is formed by a dust suppression agent sprayed on the dense mesh net. The density of the dense mesh net is not less than 2000 meshes/100 cm2The dust suppressant comprises 0.70-1.0% of sodium alginate by mass, 7.0-8.0% of anhydrous calcium chloride by mass and 0.10-0.20% of cellulose by mass, and the mass ratio of the sodium alginate to the anhydrous calcium chloride is 60 parts, 10 parts and 30 parts. The invention makes full use of dust suppressionThe synergistic effect of the net and the dust suppressant obtains remarkable dust suppression effect, and the selected dense net can reduce dust flying during construction; the dust suppressant is sprayed on the dense mesh net to form a dust suppression film, so that the dense mesh net becomes a good framework of a film structure, and the durability and the dust suppression effect of the dust suppression film are effectively improved; the good adsorptivity and the wind erosion resistance of the dust suppression film improve the dust suppression efficiency and the service life of the dust suppression net, and have strong practicability.
Description
Technical Field
The invention belongs to the field of building materials and engineering management, and particularly relates to a preparation and application method of a dense mesh dust suppression net for building engineering.
Technical Field
With the rapid development of urban construction, the dust pollution generated by building construction seriously affects the quality of living environment of residents, and the effective control of the construction dust pollution is an important link for improving the air quality, so that how to inhibit the dust emission, especially the dust emission on the building construction site, becomes an important research topic. Firstly, a prevention measure, namely changing a production activity mode and controlling the generation of the flying dust from the front end; and secondly, a slowing measure is taken, namely, an engineering measure is adopted to reduce the emission intensity of the raised dust. The common domestic dust suppression method is more traditional watering dust suppression, but the method has large water demand and short validity duration; repeated watering will exacerbate the natural weathering rate of bare earth, making it more prone to the generation of respirable dust and a tremendous drain on water resources.
Compared with sprinkling and raising dust, the dust suppression net can effectively play roles of preventing wind and dust and reinforcing stockpile, can save water resources, and has the advantages of simple structure, low maintenance and management cost, long service life and the like. In order to reduce the contribution rate of construction raise dust to air pollution and improve the air quality of the living environment of urban residents, a dust suppressant is developed, has good film forming property, can effectively fix dust and form a protective film on the surface of a material.
In the searched patent related to the dust suppression net and the dust suppressant, CN 204552265U discloses a three-layer windproof dust suppression net, which mainly highlights a laying base structure and embodies a layer of rigid windproof dust suppression net and two layers of flexible windproof dust suppression nets; CN 109181645A discloses a dust suppressant for construction sites, which has long dust suppression time, can be naturally degraded and is environment-friendly. However, most of the existing dust suppression nets are single-layer, grid-type and large-mesh dust suppression nets, and the dust prevention and anchoring effects are poor; the direct spraying of the dust suppressant can lead to the breakage and the blocking of a dust suppression film on the surface layer of a soil body generated by reaction due to artificial movement and mechanical disturbance, and finally the dust suppression effect is lost due to the exposure of soil at the lower part of a cementing layer.
Therefore, the dust suppression efficiency of the dust suppression net can be improved by combining the dust suppression net and the dust suppressant, and the durability of the dust suppression film is effectively improved.
Disclosure of Invention
Aiming at the problems of easy dust precipitation, low dust suppression efficiency and poor durability of a dust suppressant in the dust suppression net in the prior art, the invention provides the dense mesh dust suppression net for the building engineering, the dust suppressant is sprayed on the dense mesh net to form a dust suppression film, and the dense mesh net becomes a good framework of a film structure, so that the durability of the dust suppression film is effectively improved; the dust suppressant has good adsorptivity, can adsorb suspended particles in air, has good wind erosion resistance, and can improve the dust suppression efficiency and prolong the service life of the dust suppression net.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a dense mesh dust suppression net for constructional engineering, which consists of a dense mesh net and a dust suppression film, wherein the dust suppression film is formed by a dust suppression agent sprayed on the dense mesh net, and the dust suppression agent consists of a film forming preparation, a film forming auxiliary agent and cellulose; the mass ratio of the film-forming preparation to the film-forming auxiliary agent to the cellulose is 60 parts, 10 parts and 30 parts.
The invention relates to a dense mesh dust suppression net for constructional engineering, which is characterized in that the density of the dense mesh net is not less than 2000 meshes/100 cm2。
The dense mesh dust suppression net for the building engineering is characterized in that a film forming preparation is 0.70-1.0 mass percent of sodium alginate, is easy to degrade, and has good film forming property, stability and water solubility.
The dense mesh dust suppression net for the building engineering is characterized in that a film forming auxiliary agent is 7.0-8.0 mass percent of anhydrous calcium chloride and has strong water absorption.
The invention relates to a dense mesh dust suppression net for constructional engineering, which is characterized in that cellulose is one of hydroxypropyl methyl cellulose, carboxymethyl cellulose and methyl cellulose with the mass fraction of 0.10-0.20%.
Preferably, the cellulose is methyl cellulose.
Preferably, the mass fraction of the sodium alginate is 1.0%, the mass fraction of the anhydrous calcium chloride is 7.0%, and the mass fraction of the methyl cellulose is 0.10%.
The preparation method of the dense mesh dust suppression net comprises the following specific steps: adding cellulose into sodium alginate solution, stirring uniformly, adding a certain amount of calcium chloride, allowing the calcium chloride to react fully to generate a dust suppressant with uniform texture, and spraying the dust suppressant on a dense mesh net to form a dust suppression film.
The invention has the beneficial effects that: 1. the dense mesh net is used, so that the effect of blocking incoming wind can be achieved, the friction effect of the net structure enables the incoming wind to cause energy loss, the porous structure of the dense mesh net has a filtering effect on high intensity in the incoming wind, so that the turbulence degree and the wind speed under the dense mesh net are reduced, high-speed wind flow is converted into low-speed wind flow, and after passing through the dense mesh net, the low-speed wind flow is divided and combed into small-scale weak-intensity vortices, and dust flying during construction is reduced, so that the purpose of dust suppression is achieved; 2. in the invention, the dust suppressant is sprayed on the dense mesh net, so that the dust suppressant film and the dense mesh net can be bonded into a whole, and the dense mesh net becomes a good framework formed by a film structure, thus effectively improving the durability of the dust suppressant film; 3. the dense mesh net is used as a polyethylene fiber material fabric, has good tension, can prevent the dust suppression film from being damaged by artificial movement, mechanical disturbance and the like, realizes effective reinforcement, has good adsorbability and wind erosion resistance, improves the dust suppression efficiency and the service life of the dust suppression net, and has good practicability; 4. aiming at the defects of low film forming strength and easy damage of the dust suppressant, cellulose is selected as a reinforcing material and is mixed in a film forming agent sodium alginate solution, so that the obtained dust suppressant has excellent and long-acting dust suppression performance, and the material cost and the construction cost generated by the application of the dust suppressant are reduced.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment provides a dense mesh dust suppression net for constructional engineering, which consists of a dense mesh net and a dust suppression film, wherein the dust suppression film is formed by dust suppression agent sprayed on the dense mesh net.
Adding 300g of methylcellulose with the mass fraction of 0.10 percent into 600g of sodium alginate solution with the mass fraction of 1.0 percent, stirring uniformly, adding 100g of anhydrous calcium chloride with the mass fraction of 7.0 percent, fully reacting to generate a dust suppressant with uniform texture, and then uniformly spraying the dust suppressant on 2200 meshes/100 cm2On a closed mesh network.
Example 2
The embodiment provides a dense mesh dust suppression net for constructional engineering, which consists of a dense mesh net and a dust suppression film, wherein the dust suppression film is formed by dust suppression agent sprayed on the dense mesh net.
Adding 300g of methylcellulose with the mass fraction of 0.10 percent into 600g of sodium alginate solution with the mass fraction of 1.0 percent, stirring uniformly, adding 100g of anhydrous calcium chloride with the mass fraction of 8.0 percent, fully reacting to generate a dust suppressant with uniform texture, and then uniformly spraying the dust suppressant on 2200 meshes/100 cm2On a closed mesh network.
Example 3
The test site is certain project building site, and is comparatively spacious all around, except that self construction production raise dust, it is less disturbed by road raise dust or other types of city raise dust, and this experiment is gone on at project main part construction stage. TSP concentration is selected as the detection index of the ambient air particulate matter concentration in the test, before the test is started, the TSP concentrations of the test area and the comparison area are the same, and the dust emission conditions of the test area and the comparison area are guaranteed to be comparable.
The control zone was not treated and test zone 1 was set to 2200 mesh/100 cm2The test area 2 is provided with the dense mesh dust suppression net described in the above example 1, the test area 3 is provided with the dense mesh dust suppression net described in the above example 2, and the dust suppression effect of the dense mesh dust suppression net on the construction site is evaluated by continuously monitoring the TSP concentrations of the test area and the control area.
TABLE 1 Experimental monitoring of dust suppression Effect
The test result shows that: the TSP concentration in the test zone is significantly reduced compared to the control zone during the period of monitoring of the dense mesh dust suppression net test. A certain dust suppression effect can be achieved by analyzing and arranging the dense mesh net in the test area 1 and the comparison area, but the dust suppression effect is not obvious; the difference between the TSP concentration of the control area and the TSP concentration of the test area of the dense mesh dust suppression net of the invention is analyzed and set through the test area 2, the test area 3 and the control areaMaximum value of 0.27mg/m3The dense mesh dust suppression net has obvious dust suppression effect, and the dust suppression effect is more obvious along with the time extension. In addition, experimental results show that the dust suppression effect of the dust suppression net can be obviously reduced by changing the mass fraction of the film forming additive.
The above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention as set forth in the appended claims.
Claims (6)
1. The dense mesh dust suppression net for the building engineering is characterized by comprising a dense mesh net and a dust suppression film, wherein the dust suppression film is formed by a dust suppression agent sprayed on the dense mesh net, the dust suppression agent comprises a film forming preparation, a film forming auxiliary agent and cellulose, and the mass ratio of the film forming preparation to the film forming auxiliary agent to the cellulose is 60 parts, 10 parts and 30 parts.
2. The fine mesh dust suppression net for constructional engineering as claimed in claim 1, wherein the density of the fine mesh net is not less than 2000 mesh/100 cm2。
3. The building engineering fine mesh dust suppression net is characterized in that a film forming agent is 0.70-1.0% of sodium alginate by mass fraction.
4. The building engineering fine mesh dust suppression net according to claim 1, wherein the film forming aid is 7.0-8.0% by mass of anhydrous calcium chloride.
5. The fine mesh dust suppression net for construction engineering as claimed in claim 1, wherein the cellulose is one of hydroxypropyl methylcellulose, carboxymethyl cellulose and methyl cellulose with a mass fraction of 0.10-0.20%.
6. The close mesh dust suppression net for constructional engineering as claimed in claim 1, characterized in that the preparation method comprises: adding cellulose into sodium alginate solution, stirring uniformly, adding a certain amount of calcium chloride, allowing the calcium chloride to react fully to generate a dust suppressant with uniform texture, and spraying the dust suppressant on a dense mesh net to form a dust suppression film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310063.2A CN112296051A (en) | 2020-04-20 | 2020-04-20 | Preparation and application method of dense mesh dust suppression net for constructional engineering |
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| CN202010310063.2A CN112296051A (en) | 2020-04-20 | 2020-04-20 | Preparation and application method of dense mesh dust suppression net for constructional engineering |
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| CN112296051A true CN112296051A (en) | 2021-02-02 |
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| CN202010310063.2A Pending CN112296051A (en) | 2020-04-20 | 2020-04-20 | Preparation and application method of dense mesh dust suppression net for constructional engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115272304A (en) * | 2022-09-26 | 2022-11-01 | 山东滨州安惠绳网集团有限责任公司 | Cloth defect detection method and system based on image processing |
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2020
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Patent Citations (7)
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| JP2008121158A (en) * | 2006-11-14 | 2008-05-29 | Nakada Sangyo Kk | Dustproof net |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115272304A (en) * | 2022-09-26 | 2022-11-01 | 山东滨州安惠绳网集团有限责任公司 | Cloth defect detection method and system based on image processing |
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