CN111039631A - Fireproof coating for concrete structure - Google Patents
Fireproof coating for concrete structure Download PDFInfo
- Publication number
- CN111039631A CN111039631A CN201911333948.8A CN201911333948A CN111039631A CN 111039631 A CN111039631 A CN 111039631A CN 201911333948 A CN201911333948 A CN 201911333948A CN 111039631 A CN111039631 A CN 111039631A
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- CN
- China
- Prior art keywords
- parts
- concrete structure
- fireproof coating
- polyvinyl alcohol
- adhesive
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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)
- Building Environments (AREA)
Abstract
The invention discloses a fireproof coating for a concrete structure, which comprises the following components in parts by weight: 80-120 parts of adhesive, wherein the adhesive can be selected from high-alumina cement and Portland cement, 20-30 parts of heat insulation filler, the heat insulation filler is selected from a mixture of xonotlite, vermiculite and wollastonite in any proportion, 5-10 parts of water reducing agent, 3-5 parts of air entraining agent, 20-30 parts of polyvinyl alcohol, 15-25 parts of ammonia water, 5-10 parts of sodium borate, 10-20 parts of zinc borate, 2-3 parts of polyvinyl alcohol fiber, 2-3 parts of hydrogenated castor oil, 2-5 parts of urea and 150-250 parts of water solvent. The invention can disperse the heat insulation filler and the adhesive particles in the fireproof coating by adding the water reducing agent and the air entraining agent, improves the cohesiveness of the fireproof coating, improves the adhesive force between the fireproof coating and the concrete structure when the concrete structure is attached, avoids the fireproof coating from falling off under the action of high temperature or open fire, and greatly improves the fireproof performance of the concrete structure.
Description
Technical Field
The invention relates to the technical field of building fire prevention, in particular to a fireproof coating for a concrete structure.
Background
Because of its excellent properties of acid resistance, corrosion resistance, high structural strength, long service life and the like, especially when used in combination with steel bars, the concrete forms a reinforced concrete structure, further improving the structural strength thereof, and has become a building material which is most widely applied in the current buildings, and most of the current buildings are constructed by adopting the reinforced concrete structure. Although the reinforced concrete structure does not have flammability, the mechanical property of the reinforced concrete structure is rapidly reduced when the reinforced concrete structure is exposed to high temperature or directly exposed to flame, particularly, the internal reinforcing steel bars of the concrete structure lose the action of prestress when the reinforced concrete structure is subjected to high temperature or directly exposed to flame, so that the reinforced concrete structure loses corresponding performance.
In order to ensure that the reinforced concrete structure is not directly exposed to flame in case of fire and avoid generating overhigh temperature to influence the construction performance of the reinforced concrete, the fireproof coating with fireproof performance is required to be coated on the surface of the reinforced concrete structure, so that the fireproof performance of the reinforced concrete structure is improved, the strength of the structure is ensured, the existing fireproof coating is not strongly bonded with the surface of the concrete, and the fireproof coating coated on the surface of the reinforced concrete structure is easily caused to lose the bonding force and fall off when the open fire or overhigh temperature occurs, thereby influencing the fireproof performance of the reinforced concrete structure.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the fireproof coating for the concrete structure is provided, so that the adhesive force between the fireproof coating and the concrete structure is improved, and the fireproof coating is prevented from falling under the action of high temperature or open fire so as to influence the fireproof performance of the concrete structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a fireproof coating for a concrete structure comprises the following components by weight: 80-120 parts of adhesive, 20-30 parts of heat insulation filler, 5-10 parts of water reducing agent, 3-5 parts of air entraining agent, 20-30 parts of polyvinyl alcohol, 15-25 parts of ammonia water, 5-10 parts of sodium borate, 10-20 parts of zinc borate, 2-3 parts of polyvinyl alcohol fiber, 2-3 parts of hydrogenated castor oil, 2-5 parts of urea and 150-250 parts of water solvent.
Further, the adhesive is high-alumina cement and portland cement, wherein the weight ratio of the two components is 1: 1-1: 2.
Preferably, the heat insulation filler is a mixture of xonotlite, vermiculite and wollastonite in any proportion.
Furthermore, when the fireproof paint is coated, a layer of non-woven glass fiber is coated on the fireproof paint layer.
Preferably, the water reducing agent is a polycarboxylate compound.
Preferably, the air entraining agent is an alkyl or alkyl arene sulfonic acid compound.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention can disperse the heat insulation filler and the adhesive particles in the fireproof coating by adding the water reducing agent and the air entraining agent, improves the cohesiveness of the fireproof coating, improves the adhesive force between the fireproof coating and the concrete structure when the concrete structure is attached, avoids the fireproof coating from falling off under the action of high temperature or open fire, and greatly improves the fireproof performance of the concrete structure.
(2) According to the invention, polyvinyl alcohol is used as a main molding modifier, sodium borate is added as a modifier, and the relative flexibility and adhesive force of the incubation coating enable the heat of the coating to be tightly combined with a concrete structure under the action of the explosion shock wave; the rheological property of the hydrogenated castor oil and the polyvinyl alcohol fiber is improved, and the construction film forming efficiency of the coating is improved; meanwhile, the sodium borate enables the coating to react with xonotlite, vermiculite and the like in the coating under the condition of being heated to form carbon, so that a soft or liquid substance is formed, the expansion occurs, the strength of a carbonization layer is increased, and the fireproof performance of the fireproof coating is further improved.
Detailed Description
A fire-proof coating for a concrete structure has strong adhesion, can be tightly pasted on the surface of the concrete structure when being coated on the surface of the concrete structure, and can not fall off even under the action of high temperature or open fire; the concrete components of the composition comprise the following substances in parts by weight: 80-120 parts of adhesive, wherein the adhesive can be selected from high-alumina cement and Portland cement, 20-30 parts of heat insulation filler, the heat insulation filler is selected from a mixture of xonotlite, vermiculite and wollastonite in any proportion, 5-10 parts of water reducing agent, the water reducing agent can be selected from polycarboxylate compounds, and 3-5 parts of air entraining agent, and the air entraining agent can be selected from alkyl or alkyl aromatic hydrocarbon sulfonic acid compounds, 20-30 parts of polyvinyl alcohol, 15-25 parts of ammonia water, 5-10 parts of sodium borate, 10-20 parts of zinc borate, 2-3 parts of polyvinyl alcohol fiber, 2-3 parts of hydrogenated castor oil, 2-5 parts of urea and 150-250 parts of water solvent.
When the fireproof paint is coated, a layer of non-woven glass fiber is coated on the fireproof paint layer.
Example 1
The fireproof coating comprises the following substances in parts by weight: 40 parts of high alumina cement, 40 parts of portland cement, 5 parts of xonotlite, 10 parts of vermiculite, 5 parts of wollastonite, 6 parts of a polycarboxylate compound, 3 parts of an alkylaromatic sulfonic acid compound, 30 parts of polyvinyl alcohol, 20 parts of ammonia water, 7 parts of sodium borate, 15 parts of zinc borate, 2 parts of polyvinyl alcohol fiber, 3 parts of hydrogenated castor oil, 4 parts of urea and 200 parts of a water solvent. When the fireproof coating formed by the components of the embodiment is smeared on the surface of a concrete structure, the fireproof coating is heated at the high temperature of 800 ℃ for 2 hours and then knocked by a hammer, the fireproof coating on the surface does not fall off in a block manner, and when the fireproof coating is used and smeared on the concrete structure, large-area cracks appear after the fireproof coating is heated at the high temperature of 800 ℃ for 1 hour, and the fireproof coating also obviously falls off.
Example 2
The fireproof coating comprises the following substances in parts by weight: 40 parts of high alumina cement, 80 parts of portland cement, 10 parts of xonotlite, 10 parts of vermiculite, 10 parts of wollastonite, 5 parts of a polycarboxylate compound, 4 parts of an alkylaromatic sulfonic acid compound, 20 parts of polyvinyl alcohol, 25 parts of ammonia water, 5 parts of sodium borate, 10 parts of zinc borate, 3 parts of polyvinyl alcohol fiber, 3 parts of hydrogenated castor oil, 5 parts of urea and 250 parts of an aqueous solvent. When the fireproof coating formed by the components of the embodiment is smeared on the surface of a concrete structure, the fireproof coating is heated at the high temperature of 800 ℃ for 2 hours and then knocked by a hammer, the fireproof coating on the surface does not fall off in a block manner, and when the fireproof coating is used and smeared on the concrete structure, large-area cracks appear after the fireproof coating is heated at the high temperature of 800 ℃ for 1 hour, and the fireproof coating also obviously falls off.
Example 3
The fireproof coating comprises the following substances in parts by weight: 40 parts of high alumina cement, 60 parts of portland cement, 5 parts of xonotlite, 10 parts of vermiculite, 10 parts of wollastonite, 10 parts of a polycarboxylate compound, 3 parts of an alkylsulfonic acid compound, 25 parts of polyvinyl alcohol, 15 parts of ammonia water, 10 parts of sodium borate, 20 parts of zinc borate, 2 parts of polyvinyl alcohol fiber, 3 parts of hydrogenated castor oil, 2 parts of urea and 200 parts of an aqueous solvent. When the fireproof coating formed by the components of the embodiment is smeared on the surface of a concrete structure, the fireproof coating is heated at the high temperature of 800 ℃ for 2 hours and then knocked by a hammer, the fireproof coating on the surface does not fall off in a block manner, and when the fireproof coating is used and smeared on the concrete structure, large-area cracks appear after the fireproof coating is heated at the high temperature of 800 ℃ for 1 hour, and the fireproof coating also obviously falls off.
Example 4
The fireproof coating comprises the following substances in parts by weight: 50 parts of high alumina cement, 50 parts of portland cement, 15 parts of xonotlite, 10 parts of vermiculite, 5 parts of wollastonite, 5 parts of a polycarboxylate compound, 5 parts of an alkylaromatic sulfonic acid compound, 30 parts of polyvinyl alcohol, 20 parts of ammonia water, 8 parts of sodium borate, 10 parts of zinc borate, 2 parts of polyvinyl alcohol fiber, 2 parts of hydrogenated castor oil, 3 parts of urea and 200 parts of an aqueous solvent. When the fireproof coating formed by the components of the embodiment is smeared on the surface of a concrete structure, the fireproof coating is heated at the high temperature of 800 ℃ for 2 hours and then knocked by a hammer, the fireproof coating on the surface does not fall off in a block manner, and when the fireproof coating is used and smeared on the concrete structure, large-area cracks appear after the fireproof coating is heated at the high temperature of 800 ℃ for 1 hour, and the fireproof coating also obviously falls off.
Example 5
The fireproof coating comprises the following substances in parts by weight: 45 parts of high alumina cement, 55 parts of portland cement, 5 parts of xonotlite, 10 parts of vermiculite, 5 parts of wollastonite, 7 parts of a polycarboxylate compound, 3 parts of an alkylaromatic sulfonic acid compound, 25 parts of polyvinyl alcohol, 25 parts of ammonia water, 5 parts of sodium borate, 20 parts of zinc borate, 3 parts of polyvinyl alcohol fiber, 2 parts of hydrogenated castor oil, 5 parts of urea and 150 parts of an aqueous solvent. When the fireproof coating formed by the components of the embodiment is smeared on the surface of a concrete structure, the fireproof coating is heated at the high temperature of 800 ℃ for 2 hours and then knocked by a hammer, the fireproof coating on the surface does not fall off in a block manner, and when the fireproof coating is used and smeared on the concrete structure, large-area cracks appear after the fireproof coating is heated at the high temperature of 800 ℃ for 1 hour, and the fireproof coating also obviously falls off.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (6)
1. A fire retardant coating for a concrete structure, characterized in that: the material comprises the following components by weight: 80-120 parts of adhesive, 20-30 parts of heat insulation filler, 5-10 parts of water reducing agent, 3-5 parts of air entraining agent, 20-30 parts of polyvinyl alcohol, 15-25 parts of ammonia water, 5-10 parts of sodium borate, 10-20 parts of zinc borate, 2-3 parts of polyvinyl alcohol fiber, 2-3 parts of hydrogenated castor oil, 2-5 parts of urea and 150-250 parts of water solvent.
2. A fire retardant coating material for concrete structures according to claim 1, wherein: the adhesive is high-alumina cement and Portland cement, wherein the weight ratio of the two components is 1: 1-1: 2.
3. A fire retardant coating material for a concrete structure according to claim 2, wherein: the heat insulation filler is a mixture of xonotlite, vermiculite and wollastonite in any proportion.
4. A fire retardant coating material for a concrete structure according to claim 3, wherein: when the fireproof paint is coated, a layer of non-woven glass fiber is coated on the fireproof paint layer.
5. A fire retardant coating material for concrete structures according to claim 1, wherein: the water reducing agent is a polycarboxylate compound.
6. A fire retardant coating material for concrete structures according to claim 1, wherein: the air entraining agent is an alkyl or alkyl aromatic hydrocarbon sulfonic acid compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911333948.8A CN111039631A (en) | 2019-12-23 | 2019-12-23 | Fireproof coating for concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911333948.8A CN111039631A (en) | 2019-12-23 | 2019-12-23 | Fireproof coating for concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111039631A true CN111039631A (en) | 2020-04-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911333948.8A Pending CN111039631A (en) | 2019-12-23 | 2019-12-23 | Fireproof coating for concrete structure |
Country Status (1)
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| CN (1) | CN111039631A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173691A (en) * | 2011-02-22 | 2011-09-07 | 山西省交通科学研究院 | Single-component tunnel fire-retardant coating and preparation method thereof |
| CN104446197A (en) * | 2014-11-24 | 2015-03-25 | 洪其祥 | Composite fire retardant coating |
| CN104449238A (en) * | 2014-12-19 | 2015-03-25 | 江苏海龙核科技股份有限公司 | High fire-resistant fire retardant coating used for expansion steel structure |
| BR102014002644A2 (en) * | 2013-02-05 | 2015-12-08 | Promat Res And Technology Ct Nv | fire protection mortar |
| CN110590303A (en) * | 2019-10-12 | 2019-12-20 | 天津安盛达防火材料有限公司 | Fireproof coating for tunnel |
-
2019
- 2019-12-23 CN CN201911333948.8A patent/CN111039631A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173691A (en) * | 2011-02-22 | 2011-09-07 | 山西省交通科学研究院 | Single-component tunnel fire-retardant coating and preparation method thereof |
| BR102014002644A2 (en) * | 2013-02-05 | 2015-12-08 | Promat Res And Technology Ct Nv | fire protection mortar |
| CN104446197A (en) * | 2014-11-24 | 2015-03-25 | 洪其祥 | Composite fire retardant coating |
| CN104449238A (en) * | 2014-12-19 | 2015-03-25 | 江苏海龙核科技股份有限公司 | High fire-resistant fire retardant coating used for expansion steel structure |
| CN110590303A (en) * | 2019-10-12 | 2019-12-20 | 天津安盛达防火材料有限公司 | Fireproof coating for tunnel |
Non-Patent Citations (4)
| Title |
|---|
| 中国建材工业出版社编: "《建筑材料词典》", 31 July 1981, 中国建材工业出版 * |
| 何廷树等: "《建筑材料》", 31 August 2018, 中国建材工业出版 * |
| 赵云龙等: "《石膏应用技术问答》", 30 September 2016, 中国建材工业出版社 * |
| 陈应钦: "《新型建筑材料的生产与应用》", 31 May 1993, 广东科技出版社 * |
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