CN101619596B - Method for preventing indoor swimming pool with concrete structure from being eroded by chlorine gas - Google Patents
Method for preventing indoor swimming pool with concrete structure from being eroded by chlorine gas Download PDFInfo
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- CN101619596B CN101619596B CN2009100655464A CN200910065546A CN101619596B CN 101619596 B CN101619596 B CN 101619596B CN 2009100655464 A CN2009100655464 A CN 2009100655464A CN 200910065546 A CN200910065546 A CN 200910065546A CN 101619596 B CN101619596 B CN 101619596B
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Abstract
The invention relates to a method for preventing an indoor swimming pool with a concrete structure from being eroded by chlorine gas. The invention has the technical scheme that non-prestressed steel bars which are processed by an advanced hot galvanizing method are adopted in posts and a roof with concrete structures; when prestressed steel bars are adopted in the concrete structure of the roof,the prestressed steel bars adopt non-adhesive prestressed steel stranded wires; the concrete contains polypropylene fiber, the consumption of which is 0.5-2.5 kg/m<3> concrete; and the weight ratio of chlorine ions to cement in the concrete of unit volume is smaller than or equal to 0.1%. In the method of the invention, the strength grade of the concrete can reach more than C40 grade, the swimming pool with the concrete structure can be safely used within the normal concentration range of chlorine ions, and the erosion caused by environmental factors is reduced. The adoption of the polypropylene fiber can obviously improve the durability of the concrete structure, thus compared with the common concrete, the anti-leakage capacity of the concrete containing the polypropylene fiber is improved by more than 70%, and the service life of the swimming pool is prolonged and can be prolonged by more than 60%. Therefore, the invention has better application value and popularization value.
Description
One, technical field:
The present invention relates to a kind of antiseptic concrete etching method, particularly relate to a kind of anti-chlorine corrosion method of concrete structure indoor swimming pool.
Two, background technology:
It is a kind of relatively commonly used and more economic way that indoor swimming pool adopts the roof of concrete structure.Swimming pool needs frequent disinfection owing to be the public place, usually adopts the chlorine-containing disinfectant sterilization during sterilization.At present, the chlorine-containing disinfectant that adopts of China's swimming pool has: liquid chlorine, float smart powder, drift ice, strong chlorine oil (TCCA) etc.During swimming sterilizing; the chloride that the disinfectant of Chi Shuizhong contains can volatilize along with the rising of steam; usually can contain the higher chlorion of concentration in the air, and the chlorion existence can cause the corrosion of reinforcing bar in the concrete, goes down for a long time to have a strong impact on the durability of reinforced concrete structure.
In order to strengthen the internal bond strength of concrete structure, in concrete, add the some fibre material usually.The common fiber material has metallic fiber, inorfil and organic fiber.What wherein use always in the metallic fiber is steel fibre, and what inorfil was commonly used is carbon fiber and glass fiber, and what use always in the organic fiber is polypropylene fibre.Though they can both improve concrete internal bond strength to a certain extent,, steel fibre can increase the imposed load of cement matrix greatly, and performance of resisting cracking is not obvious; Carbon fiber has electric conductivity, and cost of production is higher; Glass fiber is subject to chemical erosion, causes losing tensile strength and becomes fragile; The polypropylene fibre modulus of elasticity is lower, is subjected to illumination easily aging in air, has hydrophobicity, is difficult for being soaked better performances by cement paste.
Further investigation reveals that, sports palace, Henan Province swimming pool, what adopt in the design and construction is the ordinary concrete material, roofing is the Prestressed T plate-girder, and this plate-girder is the post-tensioned prestressing concrete, and prestressing force master muscle is 6 steel strand of every bundle, two every of plate-girders are supported on the joist of vertical wall top, joist is through consolidation process, and the outsourcing angle steel is fixed with stirrup at the bottom of the beam.Find in the use that the many places corrosion of steel bar appears in this project, the part concrete cover to reinforcement breaks.Further check and find that seriously corrosion of master's muscle at the bottom of the plate-girder beam is point, wire exposes, the corrosion of plate-girder stirrup is serious, and the part stirrup is burst concrete cover and exposed owing to expansion; Joist under the plate-girder is checked, find the angle steel of joist bottom and fixedly the stirrup of angle steel all expose, and corrosion is serious, requirement must be carried out consolidation process.As seen, how just taking anti-corrosion measure in design and construction, improve the application life of swimming pool, is an important topic that is worth thinking.
Three, summary of the invention:
The technical problem to be solved in the present invention: a kind of anti-chlorine corrosion method of concrete structure indoor swimming pool is provided, and this method can be improved the corrosion resistance and the crack resistance of concrete structure, improves its durability, prolongs the application life of swimming pool.
Technical scheme of the present invention:
A kind of anti-chlorine corrosion method of concrete structure indoor swimming pool is characterized in that: when the reinforcing bar in concrete structure column and the roof adopted nonprestressed reinforcement, described nonprestressed reinforcement carries out galvanizing in advance to be handled, and galvanized layer thickness is not less than 250 μ m; When the reinforcing bar in the roof concrete structure adopted prestressed reinforcement, described prestressed reinforcement adopted un-bonded prestressed steel strand; Contain polypropylene fibre in the described concrete, its consumption is 0.5～2.5kg/m
3Concrete; Weight ratio≤0.1% of chlorion and cement in the described unit volume concrete.
The weight ratio of cement, sand, stone, water is 1: 2～4: 5～7: 0.5～1 in the described concrete, and water reducing agent, antifreezing agent consumption are respectively 0.4～1.2%, 2～5% of cement consumption.
Described water reducing agent is poly carboxylic acid series water reducer or naphthalene water reducer.
Described antifreezing agent is HZ-6 antifreezing agent or FDN-6 antifreezing agent.
Some technical requirements:
1. must not use aggregate with basic active;
2. must not use and contain muriatic antifreezing agent or other Admixtures;
3. weight ratio≤0.1% of chlorion and cement in the unit volume concrete;
4. alkalinity≤3kg/m in the concrete
3
5. the crack width of roof reinforced concrete structure should be controlled in the 0.2mm;
6. other ingredient requirements:
(1) rubble: particle diameter is 5～40mm, requires full grains, impurity content≤1% such as the flat-shaped stone of needle-like, stone flour.Building stones adopt two grade gratings, and grain adds that through being the coarse aggregate of 10～24mm particle diameter is the surplus fines of 5～10mm more than 90%;
(2) cement: 42.5 portland cements or Portland cement, same engineering are selected same lot number cement for use;
(3) durafiber: pencil monofilament, density 0.91g/cm
3, filament diameter 18～48 μ m, breaking strength 350Mpa, fusing point: 165 ℃, modulus of elasticity 3.5Gpa.
Positive beneficial effect of the present invention:
(1) reinforcing bar in concrete structure column and the roof adopts nonprestressed reinforcement in the inventive method, this reinforcing bar carries out galvanizing in advance to be handled, reinforcing bar in the roof concrete structure adopts prestressed reinforcement, and weight ratio≤0.1% of chlorion and cement in the control unit volume concrete, concrete alkalinity≤3kg/m
3, strength grade of concrete can reach more than the C40 level, and the concrete swimming pool is used safely in normal chlorine ion concentration scope, has reduced the corrosion that swimming pool brings because of environmental factor, has prolonged the application life of swimming pool, and can prolong more than 60% its application life.
(2) add durafiber in the swimming pool concrete of the present invention, durafiber is met and to be the netted or monofilament of individual layer after water stirs disorderly to distribution, and dispersive property is good, and is bigger with the contact surface of other components in the concrete, can suppress crack on concrete, improves toughness; Durafiber can thoroughly eliminate traditional fibre alkalinity height, thick and be unfavorable for defective such as pumping with cement-bonded weak effect, long fibre, improve concrete cracking resistance, this fiber uses simple, nontoxic, can obviously improve the durability of concrete structure, reduce the maintenance cost of concrete structure, resultant effect is remarkable.Test shows, in this method admixture the concrete of durafiber improve more than 70% than the impervious ability of ordinary concrete.
(3) concrete reinforcement process preliminary treatment in the method for the present invention, and the less concrete of employing alkalinity, the content of chlorion in the strict control unit volume concrete, the control of crack width of roof reinforced concrete structure is in 0.2mm, reduced the possibility of environmental factor to greatest extent, made the concrete structure of swimming pool sturdy and durable the concrete structure corrosion.
(4) method of the present invention is simple and practical, and is workable, has to use preferably and promotional value.
Four, the specific embodiment:
Embodiment one: a kind of anti-chlorine corrosion method of concrete structure indoor swimming pool is specially: the reinforcing bar in concrete structure column and the roof adopts nonprestressed reinforcement, and nonprestressed reinforcement carries out galvanizing in advance to be handled, and galvanized layer thickness is not less than 250 μ m; Reinforcing bar in the roof concrete structure adopts prestressed reinforcement, and prestressed reinforcement adopts un-bonded prestressed steel strand;
The weight ratio of cement, sand, stone, water is 1: 2.3: 5.8 in the concrete: 0.8, and water reducing agent is the TH-928 poly carboxylic acid series water reducer, consumption is 1.0% of a cement consumption; Antifreezing agent is the HZ-6 antifreezing agent, and positive temperature antifreezing agent consumption down is 2～3% of a cement consumption, and consumption increases (during as-5 ℃, can mix 3～4%, can mix 4～5% in the time of-10 ℃) slightly under the subzero temperature; The durafiber consumption is 1.2kg/m
3Concrete.
Technical requirements:
1. must not use aggregate with basic active;
2. must not use and contain muriatic antifreezing agent or other Admixtures;
3. weight ratio≤0.1% of chlorion and cement in the unit volume concrete;
4. alkalinity≤3kg/m in the concrete
3
5. the crack width of roof reinforced concrete structure should be controlled in the 0.2mm;
6. other ingredient requirements:
(1) rubble: particle diameter is 5～40mm, requires full grains, impurity content≤1% such as the flat-shaped stone of needle-like, stone flour.Building stones adopt two grade gratings, and grain adds that through being the coarse aggregate of 10～24mm particle diameter is the surplus fines of 5～10mm more than 90%;
(2) cement: 42.5 portland cements or Portland cement, same engineering are selected same lot number cement for use;
(3) durafiber: pencil monofilament, density 0.91g/cm
3, filament diameter 18～48 μ m, breaking strength 350Mpa, fusing point: 165 ℃, modulus of elasticity 3.5Gpa.
Embodiment two: be with embodiment one difference:
The weight ratio 1: 2: 5 of cement, sand, stone, water in the concrete: 0.5, cement is 42.5 portland cements, TH-928 poly carboxylic acid series water reducer consumption is 0.4% of a cement; Antifreezing agent is the HZ-6 antifreezing agent, and consumption is 2.5% of a cement consumption, and the durafiber consumption is 0.8kg/m
3Concrete.
Other requires no longer to repeat with embodiment one.
Embodiment three: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 4: 7 in the concrete: 1, and water reducing agent is the TH-928 poly carboxylic acid series water reducer, consumption is 1.1% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 3.5% of a cement consumption, and the durafiber consumption is 1.5kg/m
3Concrete.
Other requires no longer to repeat with embodiment one.
Embodiment four: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3: 6 in the concrete: 0.7, and water reducing agent is a poly carboxylic acid series water reducer, consumption is 0.8% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 2.5% of a cement consumption, and the durafiber consumption is 2.5kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment five: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 2.8: 6.5 in the concrete: 0.9, and water reducing agent is a naphthalene water reducer, consumption is 0.6% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 5% of a cement consumption, and the durafiber consumption is 0.7kg/m
3Concrete.
Other requires no longer to repeat with embodiment one.
Embodiment six: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3.7: 5.8 in the concrete: 0.6, and water reducing agent is a naphthalene water reducer, consumption is 1.1% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 4% of a cement consumption, and the polypropylene fibre consumption is 2.0kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment seven: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3.7: 5.8 in the concrete: 0.6, and water reducing agent is a naphthalene water reducer, consumption is 0.5% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 3% of a cement consumption, and the polypropylene fibre consumption is 0.7～1.2kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment eight: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 2.2: 6.8 in the concrete: 0.6, and water reducing agent is a naphthalene water reducer, consumption is 1.1% of a cement consumption; Antifreezing agent is the HZ-6 antifreezing agent, and consumption is 2% of a cement consumption, and the polypropylene fibre consumption is 0.8kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment nine: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3.7: 5.5 in the concrete: 0.8, and water reducing agent is a naphthalene water reducer, consumption is 1.0% of a cement consumption; Antifreezing agent is the FDN-6 antifreezing agent, and consumption is 3% of a cement consumption, and the polypropylene fibre consumption is 1.2kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment ten: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3: 6 in the concrete: 1, and water reducing agent is a naphthalene water reducer, consumption is 0.8% of a cement consumption; Antifreezing agent is the HZ-6 antifreezing agent, and consumption is 3% of a cement consumption, and the polypropylene fibre consumption is 1.5kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment 11: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3.5: 6 in the concrete: 0.8, and water reducing agent is a naphthalene water reducer, consumption is 0.8% of a cement consumption; Antifreezing agent is the HZ-6 antifreezing agent, and consumption is 4% of a cement consumption, and the polypropylene fibre consumption is 1.8kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Embodiment 12: be with embodiment one difference:
The weight ratio of cement, sand, stone, water is 1: 3.5: 5.5 in the concrete: 1, and water reducing agent is a naphthalene water reducer, consumption is 0.7% of a cement consumption; Antifreezing agent is the HZ-6 antifreezing agent, and consumption is 3.5% of a cement consumption, and the polypropylene fibre consumption is 2.0kg/m
3Concrete.Other requires no longer to repeat with embodiment one.
Claims (7)
1. the anti-chlorine corrosion method of a concrete structure indoor swimming pool, it is characterized in that: concrete structure column adopts nonprestressed reinforcement, reinforcing bar in the roof adopts nonprestressed reinforcement or prestressed reinforcement, described nonprestressed reinforcement carries out galvanizing in advance to be handled, and galvanized layer thickness is not less than 250 μ m; Described prestressed reinforcement adopts un-bonded prestressed steel strand; Contain polypropylene fibre in the described concrete, its consumption is the every cubic meter of concrete of 0.5～2.5kg; Weight ratio≤0.1% of chlorion and cement in the described unit volume concrete.
2. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 1, it is characterized in that: the weight ratio of cement, sand, stone, water is 1: 2～4: 5～7: 0.5～1 in the described concrete, and water reducing agent, antifreezing agent consumption are respectively 0.4～1.2%, 2～5% of cement consumption in the concrete.
3. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 2, it is characterized in that: described water reducing agent is poly carboxylic acid series water reducer or naphthalene water reducer.
4. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 2, it is characterized in that: described antifreezing agent is HZ-6 antifreezing agent or FDN-6 antifreezing agent.
5. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 1, it is characterized in that: described polypropylene fibre is a durafiber, and its consumption is the every cubic meter of concrete of 0.8～2kg.
6. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 1, it is characterized in that: described concrete alkalinity≤3kg/m
3
7. according to the anti-chlorine corrosion method of the described concrete structure indoor swimming pool of claim 1, it is characterized in that: the control of crack width of described roof concrete structure is in 0.2mm.
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| CN2009100655464A CN101619596B (en) | 2009-07-27 | 2009-07-27 | Method for preventing indoor swimming pool with concrete structure from being eroded by chlorine gas |
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| CN2009100655464A CN101619596B (en) | 2009-07-27 | 2009-07-27 | Method for preventing indoor swimming pool with concrete structure from being eroded by chlorine gas |
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| CN101619596B true CN101619596B (en) | 2010-12-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101839024A (en) * | 2010-04-13 | 2010-09-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Electric field salt rejection protective system protected by reinforced concrete structure in chloride environment |
| CN103669600A (en) * | 2012-09-05 | 2014-03-26 | 上海法赫桥梁隧道养护工程技术有限公司 | Method for extracting chloride ions in concrete members |
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| CN1168441A (en) * | 1997-05-30 | 1997-12-24 | 交通部第二公路勘察设计院 | Concrete box beam vertically locked by prestressed flat bolt and its production methed |
| CN1220980A (en) * | 1991-01-29 | 1999-06-30 | C·F·沙夫 | Beton product |
| CN1385394A (en) * | 2001-12-07 | 2002-12-18 | 北京市城昌商品混凝土联营公司 | Fibre anti-permeation cracking-resistant concrete |
| FR2865751A1 (en) * | 2004-02-03 | 2005-08-05 | Groupe Atlantis Participation | Concrete paving slab with wood-effect finish e.g. for swimming pool surround is matured after moulding to create porosity before immersing in dye solution and coating with polymer |
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2009
- 2009-07-27 CN CN2009100655464A patent/CN101619596B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220980A (en) * | 1991-01-29 | 1999-06-30 | C·F·沙夫 | Beton product |
| CN1059324A (en) * | 1991-07-15 | 1992-03-11 | 西安矿业学院 | A kind of cement concrete soluble quick-setting agent |
| CN1168441A (en) * | 1997-05-30 | 1997-12-24 | 交通部第二公路勘察设计院 | Concrete box beam vertically locked by prestressed flat bolt and its production methed |
| CN1385394A (en) * | 2001-12-07 | 2002-12-18 | 北京市城昌商品混凝土联营公司 | Fibre anti-permeation cracking-resistant concrete |
| FR2865751A1 (en) * | 2004-02-03 | 2005-08-05 | Groupe Atlantis Participation | Concrete paving slab with wood-effect finish e.g. for swimming pool surround is matured after moulding to create porosity before immersing in dye solution and coating with polymer |
Non-Patent Citations (1)
| Title |
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| 张军，潘兴军.聚丙烯纤维混凝土在游泳池池体结构中的应用.《徐州工程学院学报》.2006,第21卷(第9期),第32－33页. * |
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