CN115231870A - Concrete formwork manufactured by utilizing waste glass fiber powder and manufacturing method thereof - Google Patents
Concrete formwork manufactured by utilizing waste glass fiber powder and manufacturing method thereof Download PDFInfo
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- CN115231870A CN115231870A CN202110436733.XA CN202110436733A CN115231870A CN 115231870 A CN115231870 A CN 115231870A CN 202110436733 A CN202110436733 A CN 202110436733A CN 115231870 A CN115231870 A CN 115231870A
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- glass fiber
- waste glass
- concrete
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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
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a concrete template manufactured by utilizing waste glass fiber powder and a manufacturing method thereof, wherein the concrete template comprises a base material and auxiliary materials, and the base material comprises the following raw materials in percentage by weight: 10-30% of cement, 5-20% of fly ash, 10-50% of waste glass fiber, 5-30% of tailing sand and 10-30% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 0-2.5 per mill of the weight of the base material, the water reducing agent accounts for 0-5 per mill of the weight of the base material, and the reinforcing agent accounts for 0-1.5 per mill of the weight of the base material; the preparation method mainly comprises the steps of weighing the raw materials according to the weight percentage, stirring to prepare mortar, adding the waste glass fiber into the mortar to prepare concrete, vibrating or extruding the concrete in a mould, maintaining and demoulding. The waste glass fiber is utilized, and the prepared concrete template has good compression resistance and bending resistance, can be used as a non-dismantling template, and has low cost and high economic benefit.
Description
Technical Field
The invention relates to the technical field of concrete building materials, in particular to a concrete template manufactured by utilizing waste glass fiber powder and a manufacturing method thereof.
Background
The glass fiber has a long development history, the research of the glass fiber is successful in 1893 in the United states, and the production of the glass fiber forms the modern industrial production after the United states people in the thirty years of the last century invented the process of continuously drawing the glass fiber by using a platinum orange pan and blowing glass wool by steam. With the development of modern science and technology, higher requirements are put forward on the mechanical property, the wear resistance and other properties of the glass fiber, and the yield, the production process, the variety specification and the application field are further developed. Since the 21 st century, the glass fiber industry in China has been the first world producing country, with the continuous high-speed development of national economy and the breakthrough of a novel large tank furnace wire drawing technology, the development speed is rapidly advanced.
The main characteristics of the glass fiber industry are: the novel tank furnace wire drawing technology is generally adopted, and a multi-row porous wire drawing process is vigorously developed. A large amount of glass fiber powder can be generated in the production process of glass fiber products, the dust has small particle size and light weight, and can be diffused in the air after being exposed to natural conditions for a long time after being discarded, thereby causing serious problems to the ecological environment and the human health. Therefore, the method has important significance in recycling the waste glass fiber powder.
At present, most glass fiber enterprises adopt temporary storage or are sold to a third party after being ground into powder again, and the glass fiber enterprises occupy space for a long time in storage or sale. At present, the direct processing price of an enterprise is 50 yuan/ton, and the enterprise is handed to a third party to be deeply buried. The second method is to continue ball milling to 200-1000 meshes, the selling price is 3500 Yuan/ton, but because of more impurities in the product, the fiber can not be continuously produced, and only other products with low requirements can be produced, a large amount of energy wasted by secondary processing in the ball milling process is not beneficial to energy conservation and environmental protection, and the value of the product can not be maximized.
Disclosure of Invention
The invention aims to provide a concrete template manufactured by utilizing waste glass fiber powder and a manufacturing method thereof, and aims to solve the problem that the value is difficult to maximize by recycling the waste glass fiber powder in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the concrete formwork manufactured by utilizing the waste glass fiber powder comprises a base material and auxiliary materials, wherein the base material comprises the following raw materials in percentage by weight: 10-30% of cement, 5-20% of fly ash, 10-50% of waste glass fiber, 5-30% of tailing sand and 10-30% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 0-2.5 per mill of the weight of the base material, the water reducing agent accounts for 0-5 per mill of the weight of the base material, and the reinforcing agent accounts for 0-1.5 per mill of the weight of the base material.
Preferably, the retarder is sodium gluconate.
Preferably, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
Preferably, the enhancer is one or a combination of diethylene glycol, syrup, glycerol, triethanolamine and anhydrous sodium sulfite.
Preferably, the reinforcing agent comprises the following components in parts by weight: 8-15 parts of diethylene glycol, 15-20 parts of syrup, 3-5 parts of glycerol, 2-4 parts of triethanolamine and 2-4 parts of anhydrous sodium sulfite.
Preferably, the length of the waste glass fiber is 1-3mm.
Preferably, the ratio of the water to the sum of the cement and the fly ash is 0.23-0.4.
Preferably, the mud content of the tailing sand is not more than 1%, and the water reducing rate of the water reducing agent is not less than 25%.
The invention also provides a method for manufacturing a concrete template by using the waste glass fiber powder, which sequentially comprises the following steps:
s1, respectively weighing cement, fly ash, waste glass fiber, tailing sand, water, a retarder, a water reducing agent and a reinforcing agent according to weight percentage;
s2, adding the weighed water, water reducing agent, reinforcing agent and retarder into a stirrer, and then adding cement, fly ash and tailing sand in sequence, wherein the stirring time is not less than 2min, so as to obtain mortar;
s3, adding the weighed waste glass fibers into the mortar, and stirring for not less than 2min to obtain concrete;
s4, firstly placing a layer of glass fiber mesh cloth in the mold, then pouring the stirred concrete into the mold, carrying out low-frequency vibration or carrying out high-frequency vibration and extrusion, placing a layer of glass fiber mesh cloth on the surface after the surface is subjected to low-frequency vibration, and then covering plastic cloth; directly covering plastic cloth on the surface after extrusion, heating to 50 ℃, and maintaining for no less than 20 hours to obtain a concrete template;
and S5, demolding the cured concrete templates, preventing the templates from being placed together according to the designed template serial number, and placing the templates at normal temperature for 7 days for use.
Preferably, when the temperature difference between the outdoor temperature and the curing temperature is more than 20 ℃, gradient cooling is required, the concrete template cured in the step 4 is placed in a temporary storage room, the temperature is controlled to be 25 ℃, and demolding is carried out after the temperature is kept for 2 hours.
The invention has the beneficial effects that: waste glass fibers are bonded together through cement to form a fiber concrete template with very low price and bending strength not lower than 15MPa, the compression resistance and the bending resistance are equal to silicate cover plates appearing on the market, the price of the currently marketed 20mm silicate cover plate is 45 yuan/square meter, the cost of the concrete template prepared by the method is 7 yuan/square meter, the total cost of other costs is not higher than 12 yuan/square meter, and the method has great advantage compared with the cost of the 20mm silicate cover plate with the same thickness;
according to investigation, approximately 0.02kg of waste glass fiber is generated when 1 ton of glass fiber is produced, tens of tons of waste glass fiber is generated every year for enterprises producing thousands of tons every year, a large amount of space is temporarily stacked for a long time, the environment is polluted, the economic benefit of secondary utilization of powder is too poor, and other performances of the product can be reduced at the same time, the waste glass fiber with different lengths is irregularly arranged in concrete, the anti-bending performance of the concrete template is greatly increased, the 28-day anti-bending performance is not lower than 15MPa and is far higher than the index of 6.5MPa of the concrete anti-bending performance, and the template is processed into various templates and has good compression resistance and anti-bending performance;
the concrete form of this patent preparation is as exempting from to tear open the template, through suitable mechanical connection, assembles into the exempting from to tear open template that accords with structural design, because there is not the reinforcing bar in the template, accords with concrete structure design protective layer design requirement more, more effectual added value that has improved the product, more energy-concerving and environment-protective.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, 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.
Example 1
The concrete template manufactured by utilizing the waste glass fiber powder comprises a base material and auxiliary materials, wherein the base material comprises the following raw materials in percentage by weight: 10% of cement, 20% of fly ash, 30% of waste glass fiber, 30% of tailing sand and 10% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 1 per mill of the weight of the base material, the water reducing agent accounts for 1 per mill of the weight of the base material, and the reinforcing agent accounts for 0.5 per mill of the weight of the base material.
As a preferred embodiment of this embodiment, sodium gluconate is used as the retarder, and a polycarboxylic acid high-performance water reducing agent is used as the water reducing agent.
As a preferred embodiment of this example, diethylene glycol, syrup, glycerol, triethanolamine, anhydrous sodium sulfite are used as the enhancer. The reinforcing agent comprises the following components in parts by weight: 8 parts of diethylene glycol, 15 parts of syrup, 3 parts of glycerol, 2 parts of triethanolamine and 2 parts of anhydrous sodium sulfite.
In a preferred embodiment of this embodiment, the length of the waste glass fiber is 1mm.
As a preferred embodiment of this embodiment, the ratio of water to the sum of cement and fly ash is 0.33.
As a preferred embodiment of this embodiment, the tailings sand contains no more than 1% of mud, the fly ash is class ii, the cement is PO42.5, and the water reducing rate of the water reducing agent is not less than 25%.
Example 2
The concrete formwork manufactured by using the waste glass fiber powder provided by the embodiment comprises a base material and auxiliary materials, wherein the base material comprises the following raw materials in percentage by weight: 30% of cement, 20% of fly ash, 10% of waste glass fiber, 20% of tailing sand and 20% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 2.5 thousandths of the weight of the base material, the water reducing agent accounts for 5 thousandths of the weight of the base material, and the reinforcing agent accounts for 1.5 thousandths of the weight of the base material.
As a preferred embodiment of this embodiment, sodium gluconate is used as the retarder, and a polycarboxylic acid high-performance water reducing agent is used as the water reducing agent.
As a preferable embodiment of this embodiment, diethylene glycol, syrup, glycerol, triethanolamine, and anhydrous sodium sulfite are used as the enhancer. The reinforcing agent comprises the following components in percentage by weight: 15 parts of diethylene glycol, 20 parts of syrup, 5 parts of glycerol, 4 parts of triethanolamine and 4 parts of anhydrous sodium sulfite.
In a preferred embodiment of this embodiment, the length of the waste glass fiber is 3mm.
As a preferred embodiment of this embodiment, the ratio of water to the sum of cement and fly ash is 0.4.
As a preferred embodiment of this embodiment, the mud content of the tailings sand is not more than 1%, the fly ash is class ii, the cement is PO42.5, and the water reducing rate of the water reducing agent is not less than 25%.
Example 3
The concrete formwork manufactured by using the waste glass fiber powder provided by the embodiment comprises a base material and auxiliary materials, wherein the base material comprises the following raw materials in percentage by weight: 30% of cement, 20% of fly ash, 20% of waste glass fiber, 15% of tailing sand and 15% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 2 thousandths of the weight of the base material, the water reducing agent accounts for 4 thousandths of the weight of the base material, and the reinforcing agent accounts for 1 thousandth of the weight of the base material.
As a preferred embodiment of this embodiment, sodium gluconate is used as the retarder, and a polycarboxylic acid high-performance water reducing agent is used as the water reducing agent.
As a preferable embodiment of this embodiment, diethylene glycol, syrup, glycerol, triethanolamine, and anhydrous sodium sulfite are used as the enhancer. The reinforcing agent comprises the following components in percentage by weight: 10 parts of diethylene glycol, 10 parts of syrup, 4 parts of glycerol, 3 parts of triethanolamine and 3 parts of anhydrous sodium sulfite.
In a preferred embodiment of this embodiment, the length of the waste glass fiber is 2mm.
As a preferred embodiment of this embodiment, the ratio of water to the sum of cement and fly ash is 0.3.
As a preferred embodiment of this embodiment, the tailings sand contains no more than 1% of mud, the fly ash is class ii, the cement is PO42.5, and the water reducing rate of the water reducing agent is not less than 25%.
Example 4
The embodiment provides a method for manufacturing a concrete template by using waste glass fiber powder, which sequentially comprises the following steps:
s1, respectively weighing cement, fly ash, waste glass fiber, tailing sand, water, a retarder, a water reducing agent and a reinforcing agent according to the mixture ratio of the embodiment 1, the embodiment 2 or the embodiment 3;
s2, adding the weighed water, the water reducing agent, the reinforcing agent and the retarder into a stirrer, and then adding the cement, the fly ash and the tailing sand in sequence, wherein the stirring time is not less than 2min, so as to obtain mortar;
s3, adding the weighed waste glass fibers into the mortar, and stirring for not less than 2min to obtain concrete;
s4, placing a layer of 5 x 5mm glass fiber mesh cloth in a mold, pouring the stirred concrete into the mold, vibrating at low frequency, placing a layer of glass fiber mesh cloth on the surface after the surface is crushed by the low frequency, covering the glass fiber mesh cloth with plastic cloth, heating to 50 ℃, and maintaining for not less than 20 hours to obtain the concrete template;
and S5, demolding the cured concrete templates, preventing the templates from being placed together according to the designed template serial number, and placing the templates at normal temperature for 7 days for use.
As a preferred embodiment of this embodiment, when the temperature difference between the outdoor temperature and the curing temperature is above 20 ℃, gradient cooling is required, the concrete form cured in step 4 is placed in a temporary storage room, the temperature is controlled at 25 ℃, and the concrete form is released after being maintained for 2 hours.
The fluidity of the mortar of this example is greater than 280mm, that is, the finished product is a slurry which can flow freely without any external force.
Example 5
The embodiment provides a method for manufacturing a concrete template by using waste glass fiber powder, which sequentially comprises the following steps:
s1, respectively weighing cement, fly ash, waste glass fiber, tailing sand, water, a retarder, a water reducing agent and a reinforcing agent according to the mixture ratio of the embodiment 1, the embodiment 2 or the embodiment 3;
s2, adding the weighed water, the water reducing agent, the reinforcing agent and the retarder into a stirrer, and then adding the cement, the fly ash and the tailing sand in sequence, wherein the stirring time is not less than 2min, so as to obtain mortar;
s3, adding the weighed waste glass fibers into the mortar, and stirring for not less than 2min to obtain concrete;
s4, placing a layer of 5 x 5mm glass fiber mesh cloth in a mold, pouring the stirred concrete into the mold, performing high-frequency vibration and extrusion, directly covering plastic cloth on the surface after extrusion, heating to 50 ℃, and maintaining for not less than 20 hours to obtain a concrete template;
and S5, demolding the cured concrete templates, preventing the templates from being placed together according to the designed template serial number, and placing the templates at normal temperature for 7 days for use.
As a preferred embodiment of this embodiment, when the temperature difference between the outdoor temperature and the curing temperature is above 20 ℃, gradient cooling is required, the concrete form cured in step 4 is placed in a temporary storage chamber, the temperature is controlled to be 25 ℃, and the concrete form is released after being maintained for 2 hours.
The fluidity of the mortar is more than 50-140mm, namely the finished mortar is viscous and can not flow freely without any external force.
By using the formula of the embodiments 1 to 3 and the manufacturing method of the embodiments 4 to 5, the concrete template with the thickness of 5 to 30mm, the compressive strength of not less than 8Mpa in 2 hours, the compressive strength of not less than 20Mpa in 24 hours, the compressive strength of not less than 50Mpa in 28 days, the flexural strength of not less than 6.5Mpa in 3 days and the flexural strength of not less than 15Mpa in 7 days can be prepared, the concrete template can be made into a non-dismantling template of a mounting and repairing plate and a cast-in-place node of an assembly building, the construction period and the labor intensity of workers can be effectively shortened, and the assembly rate and the construction efficiency of the assembly building can be greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The concrete formwork manufactured by utilizing the waste glass fiber powder comprises a base material and auxiliary materials, and is characterized in that the base material consists of the following raw materials in percentage by weight: 10-30% of cement, 5-20% of fly ash, 10-50% of waste glass fiber, 5-30% of tailing sand and 10-30% of water; the auxiliary materials comprise a retarder, a water reducing agent and a reinforcing agent, wherein the retarder accounts for 0-2.5 per mill of the weight of the base material, the water reducing agent accounts for 0-5 per mill of the weight of the base material, and the reinforcing agent accounts for 0-1.5 per mill of the weight of the base material.
2. The concrete form made of waste glass fiber powder according to claim 1, wherein: the retarder adopts sodium gluconate.
3. The concrete form made of waste glass fiber powder according to claim 1, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
4. The concrete form made of waste glass fiber powder according to claim 1, wherein: the reinforcing agent is one or a combination of more of diethylene glycol, syrup, glycerol, triethanolamine and anhydrous sodium sulfite.
5. The concrete formwork manufactured by using the waste glass fiber powder as claimed in claim 4, wherein the reinforcing agent comprises the following components in parts by weight: 8-15 parts of diethylene glycol, 15-20 parts of syrup, 3-5 parts of glycerol, 2-4 parts of triethanolamine and 2-4 parts of anhydrous sodium sulfite.
6. The concrete form made of waste glass fiber powder according to claim 1, wherein: the length of the waste glass fiber is 1-3mm.
7. The concrete form made of waste glass fiber powder according to claim 1, wherein: the ratio of the water to the sum of the cement and the fly ash is 0.23-0.4.
8. The concrete form made of waste glass fiber powder according to claim 1, wherein: the mud content of the tailing sand is not more than 1%, and the water reducing rate of the water reducing agent is not less than 25%.
9. A method for manufacturing a concrete template by using waste glass fiber powder is characterized by sequentially comprising the following steps:
s1, weighing cement, fly ash, waste glass fiber, tailing sand, water, a retarder, a water reducer and a reinforcing agent according to weight percentage;
s2, adding the weighed water, water reducing agent, reinforcing agent and retarder into a stirrer, and then adding cement, fly ash and tailing sand in sequence, wherein the stirring time is not less than 2min, so as to obtain mortar;
s3, adding the weighed waste glass fibers into the mortar, and stirring for not less than 2min to obtain concrete;
s4, placing a layer of glass fiber mesh cloth in a mold, pouring the stirred concrete into the mold, carrying out low-frequency vibration or carrying out high-frequency vibration and extrusion, placing a layer of glass fiber mesh cloth on the surface after the surface is subjected to low-frequency vibration, and covering a plastic cloth; directly covering plastic cloth on the surface after extrusion, heating to 50 ℃, and maintaining for not less than 20 hours to obtain a concrete template;
and S5, demolding the cured concrete templates, preventing the templates from being placed together according to the designed template serial number, and placing the templates at normal temperature for 7 days for use.
10. The method for manufacturing a concrete form using waste glass fiber powder according to claim 9, wherein: and (3) when the temperature difference between the outdoor temperature and the curing temperature is more than 20 ℃, gradient cooling is required, the concrete template cured in the step (4) is placed in a temporary storage room, the temperature is controlled to be 25 ℃, and demoulding is carried out after the temperature is kept for 2 hours.
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| CN202110436733.XA CN115231870A (en) | 2021-04-22 | 2021-04-22 | Concrete formwork manufactured by utilizing waste glass fiber powder and manufacturing method thereof |
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| CN202110436733.XA CN115231870A (en) | 2021-04-22 | 2021-04-22 | Concrete formwork manufactured by utilizing waste glass fiber powder and manufacturing method thereof |
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| CN115231870A true CN115231870A (en) | 2022-10-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880141A (en) * | 2010-06-13 | 2010-11-10 | 周远飞 | Wall form integrated board and manufacturing method thereof |
| CN108147725A (en) * | 2017-12-29 | 2018-06-12 | 成都精准混凝土有限公司 | High-strength water-permeable concrete |
| CN112225494A (en) * | 2020-09-22 | 2021-01-15 | 吴敬军 | Mortar and preparation method thereof |
-
2021
- 2021-04-22 CN CN202110436733.XA patent/CN115231870A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880141A (en) * | 2010-06-13 | 2010-11-10 | 周远飞 | Wall form integrated board and manufacturing method thereof |
| CN108147725A (en) * | 2017-12-29 | 2018-06-12 | 成都精准混凝土有限公司 | High-strength water-permeable concrete |
| CN112225494A (en) * | 2020-09-22 | 2021-01-15 | 吴敬军 | Mortar and preparation method thereof |
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