CN114407476B - Concrete surface heat insulation material and preparation method and use method thereof - Google Patents
Concrete surface heat insulation material and preparation method and use method thereof Download PDFInfo
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- CN114407476B CN114407476B CN202111459058.9A CN202111459058A CN114407476B CN 114407476 B CN114407476 B CN 114407476B CN 202111459058 A CN202111459058 A CN 202111459058A CN 114407476 B CN114407476 B CN 114407476B
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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
- 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/14—Layered products comprising a layer of synthetic resin next to a particulate layer
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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
- B32B5/16—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 features of a layer formed of particles, e.g. chips, powder or granules
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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
- B32B5/18—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 features of a layer of foamed material
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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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/24—Organic non-macromolecular coating
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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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention relates to concrete heat preservation, in particular to a concrete surface heat preservation material, a preparation method and a use method thereof. Compared with the prior art, the heat insulation material can be in close contact with fresh concrete, and can effectively store heat and insulate the fresh concrete, so that the loss of mechanical property and durability of the concrete caused by low-temperature disasters under the negative temperature condition is prevented.
Description
Technical Field
The invention relates to concrete heat preservation, in particular to a concrete surface heat preservation material and a preparation method and a use method thereof.
Background
The layout of China is wide, the latitude and longitude spans are large, and the climate and the temperature of the north and south are quite different, wherein in northeast and northwest areas, the winter is cold and the duration is long, which is as long as 3-6 months. With the development of engineering construction in various places of the country, a part of areas often need to be constructed with concrete in winter, and long winter and cold seasons bring a lot of problems to engineering construction, so that the following is specified in the reinforced concrete engineering construction and acceptance Specification: when the outdoor daily average air temperature is kept to be less than 5 ℃ for 5 days, the construction projects of concrete and reinforced concrete are carried out according to the relevant regulations of winter construction. The concrete has high heat exchange rate due to high temperature difference between the concrete and the external environment after pouring, and especially under the negative temperature condition, the heat conduction speed is high, so that the temperature of the freshly mixed concrete is rapidly reduced, the hydration is further reduced, and the strength of the concrete is correspondingly reduced. When the temperature of the aqueous solution in the concrete is reduced below the freezing point, the hydration reaction is stopped, the strength is increased, part of water which does not participate in the hydration reaction in the concrete is frozen, frost heaving stress is generated, and the final strength of the concrete is greatly reduced if the concrete does not reach the frost-resistant critical strength, and even the structure is damaged.
If no effective measures are taken for improvement, the concrete is damaged by osmotic pressure and expansion pressure in a negative temperature environment, so that reasonable heat preservation measures are necessary for improving the durability of the concrete, especially fresh concrete.
At present, the means for improving the frost resistance of the newly poured concrete in the low-temperature environment mainly comprise measures such as special cement, concrete antifreezing agent addition, heating and the like, but the measures not only can improve the production cost, but also can have adverse effects on the development of the strength of the concrete.
Disclosure of Invention
The invention aims to solve at least one of the problems, and provides a concrete surface heat insulation material, a preparation method and a use method thereof, wherein the heat insulation material can be in close contact with fresh concrete, and can effectively store heat and insulate the fresh concrete, so that the loss of mechanical property and durability of the concrete caused by low-temperature disasters under a negative temperature condition is prevented.
The aim of the invention is achieved by the following technical scheme:
the invention discloses a concrete surface heat insulation material, which consists of an antifreezing layer, an isolating layer, a heat storage layer, an isolating layer and a heat insulation layer which are sequentially arranged, wherein the antifreezing layer and the heat storage layer are separated by the isolating layer, and the isolating layer between the antifreezing layer and the heat storage layer is a porous isolating layer.
Preferably, the antifreeze layer is composed of 30 to 60 weight percent of glycol, 20 to 30 weight percent of sodium thiocyanate and 20 to 40 weight percent of sodium oxalate. The setting of the anti-freezing layer not only reduces the freezing point of the concrete, but also can promote the hydration of the concrete, improve the anti-freezing capacity of the concrete, and can effectively prevent the damage of external negative temperature to the concrete.
Preferably, the antifreeze layer consists of 40% glycol, 30% sodium thiocyanate and 30% sodium oxalate, and the improvement must be capable of achieving the best antifreeze property and simultaneously achieving the workability.
Preferably, the antifreeze layer is obtained by mixing ethylene glycol, sodium thiocyanate and sodium oxalate with stirring.
Preferably, the stirring speed is 60r/min and the stirring time is 5min.
Preferably, the isolation layer is a plastic film with glue. The effective layers (the antifreezing layer, the heat storage layer and the heat preservation layer) are bonded and distinguished through the isolating layers, so that the mutual influence and the mutual reaction are prevented, and the performance of the heat preservation material is influenced. The isolation layer plays an isolating role on different structures, and prevents the mutual interference of different structures from failing.
Preferably, the thickness of the barrier layer is 0.1mm.
Preferably, the heat storage layer is calcium oxide particles with the particle size of 50-100 meshes and the thickness of 0.5-1.5 mm. The heat accumulation layer effectively accumulates heat on the surface of the concrete, so that the normal hydration of the concrete is ensured. The heat accumulation of the heat accumulation layer is to generate heat through the reaction of calcium oxide and water, so as to provide a certain heat foundation for hydration of concrete.
Preferably, the thickness of the heat accumulation layer is 1.2mm. The heat output of the heat storage layer is related to the content of water and calcium oxide, the excessively thin heat storage layer is unfavorable for the frost resistance of the later-period concrete, the long-term persistence is poor, and the excessively thick heat storage layer can cause excessive loss of water of a concrete matrix, so that the hydration of cement is not facilitated.
Preferably, the heat preservation layer is a polystyrene foam plate with the thickness of 5-15 mm. The heat preservation layer has the functions of heat preservation and external antifreezing for the inside of the concrete, and keeps apart the negative temperature of the environment while keeping the inside of the structure warm.
Preferably, the thickness of the heat insulation layer is 15mm. The insulation is too thin to facilitate the storage of internal heat.
The invention discloses a preparation method of the concrete surface heat preservation material, which comprises the following steps: the anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer. The third aspect of the invention discloses a use method of a concrete surface heat insulation material, which comprises the steps of firstly spraying a layer of water on the surface of concrete, on one hand, dissolving active ingredients in an antifreezing layer into the water, reducing the freezing point of the concrete and promoting the hydration of the concrete, and on the other hand, the migration of the water can promote the heat accumulation layer to start to generate heat, so as to provide a heat foundation for the hydration of the concrete. The insulation material as described above is then adhered to the concrete surface, wherein the antifreeze layer is in contact with the concrete surface and the insulation layer is in contact with the outside air.
The porous isolation layer is arranged between the antifreezing layer and the heat storage layer, so that water can be contacted with the calcium oxide particles to react to generate heat, and a heat foundation is provided for hydration of concrete.
One side of the antifreezing layer is combined with the concrete matrix, so that the antifreezing layer can play a role in reducing the freezing point quickly and prevent the concrete from being frozen. The calcium oxide in the heat storage layer has strong water absorption capacity, if the calcium oxide is directly contacted with concrete, the water in the concrete is greatly consumed, the hydration of the cement is not facilitated, meanwhile, the heat storage layer can be quickly failed, the frost resistance of the concrete is improved at a later stage, and therefore, the insulation through the frost protection layer is needed to realize long-term slow heat supply. The heat preservation layer effectively protects the internal heat through heat preservation and heat insulation performance, and simultaneously isolates external low-temperature invasion.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the heat insulation material is arranged on the surface of the concrete, so that on one hand, good temperature compensation can be provided for hydration in the concrete and effective prevention and control of external negative temperature can be realized, on the other hand, the heat insulation material can be recycled, and part of failure layers can be reused after being simply replaced, so that recycling is realized.
2. The antifreezing layer of the heat insulation material is in direct contact with the surface of the concrete, so that the freezing point of the surface of the concrete can be effectively reduced, the hydration of the concrete can be promoted, and the strength of the concrete can be enhanced; the heat storage layer supplements heat of the concrete by a chemical heat release mode, provides a heat foundation for hydration of the concrete, and ensures that hydration can be continuously carried out; the heat preservation layer is arranged to effectively isolate the influence of external negative temperature on internal concrete, so that internal heat preservation and external anti-freezing are realized; an isolation layer is arranged between every two layers to prevent the reaction between the layers and influence the performance of the heat insulation material. The maintenance of the concrete under the negative temperature condition is realized through the multilayer system, the effective heat accumulation and insulation can prevent the loss of the mechanical property and the durability of the concrete caused by low-temperature disasters under the negative temperature condition, and the freezing injury of the concrete caused by the negative temperature condition is reduced.
3. The heat insulation material is arranged on the surface of the concrete, does not influence the internal structure of the concrete, is beneficial to promoting the hydration process and improving the strength of the concrete.
Detailed Description
The invention is described in detail below in connection with specific examples, but in no way limits the invention.
The reagents used in the examples below are all commercially available products routinely used by those skilled in the art.
Example 1
The heat insulation material in the embodiment is formed by sequentially superposing an antifreezing layer, a porous isolation layer, a heat storage layer, an isolation layer and a heat insulation layer.
Wherein the antifreezing layer is prepared by placing 60wt% of ethylene glycol, 20wt% of sodium thiocyanate and 20wt% of sodium oxalate into a stirrer and stirring at a rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat accumulating layer is calcium oxide particle of 0.5mm thickness and size of 50-100 mesh; the heat-insulating layer is a polystyrene foam plate with the thickness of 5mm.
The anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 34%, the shrinkage ratio was 94%, the penetration height ratio was 63%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage ratio was 102%, and the penetration height ratio was 89% as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
Example 2
The heat insulation material in the embodiment is formed by sequentially superposing an antifreezing layer, a porous isolation layer, a heat storage layer, an isolation layer and a heat insulation layer.
Wherein the antifreezing layer is prepared by mixing 50wt% of ethylene glycol, 23wt% of sodium thiocyanate and 27wt% of sodium oxalate in a stirrer at a rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat accumulating layer is calcium oxide particle of 0.8mm thickness and size of 50-100 mesh; the heat-insulating layer is a polystyrene foam plate with the thickness of 8 mm.
The anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 24%, the shrinkage ratio was 83%, the penetration height ratio was 57%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage ratio was 102%, and the penetration height ratio was 89%, as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
Example 3
The heat insulation material in the embodiment is formed by sequentially superposing an antifreezing layer, a porous isolation layer, a heat storage layer, an isolation layer and a heat insulation layer.
Wherein the antifreezing layer is prepared by putting 45wt% of ethylene glycol, 25wt% of sodium thiocyanate and 30wt% of sodium oxalate into a stirrer and stirring at a rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat accumulating layer is calcium oxide particle of 1.0mm thickness and of 50-100 mesh size; the heat-insulating layer is a polystyrene foam plate with the thickness of 12 mm.
The anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 11%, the shrinkage rate was 47%, the penetration height ratio was 43%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage rate was 102%, and the penetration height ratio was 89%, as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
Example 4
The heat insulation material in the embodiment is formed by sequentially superposing an antifreezing layer, a porous isolation layer, a heat storage layer, an isolation layer and a heat insulation layer.
Wherein the antifreezing layer is prepared by mixing 40wt% of ethylene glycol, 30wt% of sodium thiocyanate and 30wt% of sodium oxalate in a stirrer at a rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat accumulating layer is calcium oxide particle of 1.2mm thickness and of 50-100 mesh size; the heat-insulating layer is a polystyrene foam plate with the thickness of 15mm.
The anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 4%, the shrinkage ratio was 17%, the penetration height ratio was 6%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage ratio was 102%, and the penetration height ratio was 89%, as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
Example 5
The heat insulation material in the embodiment is formed by sequentially superposing an antifreezing layer, a porous isolation layer, a heat storage layer, an isolation layer and a heat insulation layer.
Wherein the antifreezing layer is prepared by putting 30 weight percent of ethylene glycol, 30 weight percent of sodium thiocyanate and 40 weight percent of sodium oxalate into a stirrer and stirring at the rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat accumulating layer is calcium oxide particle of 1.5mm thickness and of 50-100 mesh size; the heat-insulating layer is a polystyrene foam plate with the thickness of 15mm.
The anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 11%, the shrinkage ratio was 25%, the penetration height ratio was 27%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage ratio was 102%, and the penetration height ratio was 89%, as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
Comparative example
The heat insulating material in this embodiment is formed by sequentially stacking an antifreezing layer, an isolation layer and a heat insulating layer.
The antifreezing layer is prepared by putting 40 weight percent of glycol, 30 weight percent of sodium thiocyanate and 3 weight percent of sodium oxalate into a stirrer and stirring at the rotating speed of 60r/min for 5 min; the isolation layer is a 0.1mm plastic film with glue; the heat-insulating layer is a polystyrene foam plate with the thickness of 15mm.
When in use, a layer of water is sprayed on the surface of the concrete, and then the heat insulation material is adhered on the surface of the concrete.
According to GB/T50082-2009 Standard for test methods for Long-term Properties and durability of ordinary concrete, fresh concrete test blocks after curing to 1d age are not treated and the thermal insulation materials in the embodiment are coated on the surfaces, and are cured for 28d at the temperature of minus 5 ℃. The experimental results showed that the strength loss rate of the concrete 28d surface-coated with the insulating material of this example was 41%, the shrinkage ratio was 76%, the penetration height ratio was 67%, and the strength loss rate of the concrete without treatment was 63%, the shrinkage ratio was 102%, and the penetration height ratio was 89%, as compared with the concrete cured to 28d under the standard temperature condition (20 ℃).
As can be seen from comparative example 4 and the comparative example, the surface heat insulation material of the invention has good performance, keeps the performance of the internal concrete good, is not greatly influenced by the external negative temperature environment, and has extremely high application value for practical application.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (9)
1. The concrete surface heat insulation material is characterized by comprising an antifreezing layer, an isolating layer, a heat storage layer, an isolating layer and a heat insulation layer which are sequentially arranged, wherein the antifreezing layer, the heat storage layer and the heat storage layer are separated by the isolating layer, and the isolating layer between the antifreezing layer and the heat storage layer is a porous isolating layer;
the antifreezing layer consists of 30-60wt% of ethylene glycol, 20-30wt% of sodium thiocyanate and 20-40wt% of sodium oxalate;
the heat storage layer is calcium oxide particles;
when the heat-insulating material is used, a layer of water is sprayed on the surface of concrete, and then the heat-insulating material is adhered to the surface of the concrete, wherein one side of the antifreezing layer is contacted with the surface of the concrete, and one side of the heat-insulating layer is contacted with the outside air.
2. The concrete surface heat insulation material according to claim 1, wherein the antifreeze layer is composed of 40wt% of ethylene glycol, 30wt% of sodium thiocyanate and 30wt% of sodium oxalate.
3. The concrete surface insulation material of claim 1, wherein the isolation layer is a plastic film with glue.
4. The concrete surface heat insulation material according to claim 1, wherein the particle size of the heat storage layer is 50-100 meshes, and the thickness of the heat storage layer is 0.5-1.5 mm.
5. The concrete surface insulation material according to claim 4, wherein the thickness of the heat storage layer is 1.2mm.
6. The concrete surface heat insulation material according to claim 1, wherein the heat insulation layer is a polystyrene foam board with a thickness of 5-15 mm.
7. The concrete surface insulation material of claim 6, wherein the insulation layer has a thickness of 15mm.
8. A method for preparing the concrete surface heat insulation material according to any one of claims 1 to 7, comprising the following steps: the anti-freezing layer is coated on one side of the porous isolating layer, the heat accumulating layer is paved on the other side of the porous isolating layer, and the isolating layer and the heat insulating layer are sequentially arranged on the other side of the heat accumulating layer.
9. A method for using a concrete surface heat-insulating material, characterized in that a layer of water is sprayed on the concrete surface, and then the heat-insulating material according to any one of claims 1 to 7 is adhered to the concrete surface, wherein one side of an antifreezing layer is contacted with the concrete surface, and one side of the heat-insulating layer is contacted with the outside air.
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| CN202111459058.9A CN114407476B (en) | 2021-12-02 | 2021-12-02 | Concrete surface heat insulation material and preparation method and use method thereof |
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| CN202111459058.9A CN114407476B (en) | 2021-12-02 | 2021-12-02 | Concrete surface heat insulation material and preparation method and use method thereof |
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| CN114407476A CN114407476A (en) | 2022-04-29 |
| CN114407476B true CN114407476B (en) | 2023-08-04 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4403978A1 (en) * | 1994-02-09 | 1995-08-10 | Euka Bauelemente Verkaufsgesel | Road material |
| JP2001288895A (en) * | 2000-04-07 | 2001-10-19 | Nittetsu Fine Prod:Kk | Concrete curing sheet and placing form |
| JP2009138339A (en) * | 2007-12-03 | 2009-06-25 | Mitsubishi Paper Mills Ltd | Concrete curing sheet and concrete curing method |
| CN202047589U (en) * | 2011-08-01 | 2011-11-23 | 山东汇星科技开发有限公司 | Isolation-type fireproof composite heat-insulating template for cast-in-place concrete |
| JP2016089381A (en) * | 2014-10-30 | 2016-05-23 | 清水建設株式会社 | Concrete curing structure and concrete curing method |
| CN205711588U (en) * | 2016-02-05 | 2016-11-23 | 重庆建工住宅建设有限公司 | A kind of exposed concrete water-drainage antifreezing road structure |
| CN208812678U (en) * | 2018-09-21 | 2019-05-03 | 厦门宏钛盛电子科技有限公司 | A kind of water-fastness protective film of high-low temperature resistant |
| JP2020159077A (en) * | 2019-03-27 | 2020-10-01 | 太平洋マテリアル株式会社 | Heating sheet, and heating method and curing method of concrete using heating sheet |
| CN212002233U (en) * | 2020-04-11 | 2020-11-24 | 段大伟 | A assembled concrete maintenance template for construction in winter |
| JP2021006682A (en) * | 2019-06-28 | 2021-01-21 | フジモリ産業株式会社 | Concrete curing sheet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925914B (en) * | 2013-01-15 | 2017-02-08 | 中冶集团武汉勘察研究院有限公司 | On-site pouring maintenance method of survey monument in high-latitude area and low-temperature environment |
| CN106545165B (en) * | 2016-11-06 | 2019-01-29 | 南京友西科技股份有限公司 | A kind of early strong anticracking anti-freezing method of concrete floor winter construction |
| CN107061884A (en) * | 2017-05-23 | 2017-08-18 | 广西鑫雅皇庭园林工程有限责任公司 | A kind of environmentally friendly freeze-proofing running water pipe |
| CN110016847B (en) * | 2018-01-09 | 2021-08-17 | 深圳市交运工程集团有限公司 | Foamed asphalt cold-recycling pavement structure and construction process thereof |
| CN208815887U (en) * | 2018-08-02 | 2019-05-03 | 中铁科学研究院有限公司 | A kind of heat preservation template |
-
2021
- 2021-12-02 CN CN202111459058.9A patent/CN114407476B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4403978A1 (en) * | 1994-02-09 | 1995-08-10 | Euka Bauelemente Verkaufsgesel | Road material |
| JP2001288895A (en) * | 2000-04-07 | 2001-10-19 | Nittetsu Fine Prod:Kk | Concrete curing sheet and placing form |
| JP2009138339A (en) * | 2007-12-03 | 2009-06-25 | Mitsubishi Paper Mills Ltd | Concrete curing sheet and concrete curing method |
| CN202047589U (en) * | 2011-08-01 | 2011-11-23 | 山东汇星科技开发有限公司 | Isolation-type fireproof composite heat-insulating template for cast-in-place concrete |
| JP2016089381A (en) * | 2014-10-30 | 2016-05-23 | 清水建設株式会社 | Concrete curing structure and concrete curing method |
| CN205711588U (en) * | 2016-02-05 | 2016-11-23 | 重庆建工住宅建设有限公司 | A kind of exposed concrete water-drainage antifreezing road structure |
| CN208812678U (en) * | 2018-09-21 | 2019-05-03 | 厦门宏钛盛电子科技有限公司 | A kind of water-fastness protective film of high-low temperature resistant |
| JP2020159077A (en) * | 2019-03-27 | 2020-10-01 | 太平洋マテリアル株式会社 | Heating sheet, and heating method and curing method of concrete using heating sheet |
| JP2021006682A (en) * | 2019-06-28 | 2021-01-21 | フジモリ産業株式会社 | Concrete curing sheet |
| CN212002233U (en) * | 2020-04-11 | 2020-11-24 | 段大伟 | A assembled concrete maintenance template for construction in winter |
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