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You have an inground pool using a salt generator system and having a stainless steel ladder with aluminum sockets in the concrete deck What can you do to control galvanic corrosion?
Wiki User
∙ 12y ago
Corrosion cannot be controlled. Pool installer should have used brass sockets, will not corrode. For cost of about $10 less a socket, replacement will cost hundreds to remove pavers, break concrete and reset in brass. Went through the same disaster with my pool
Wiki User
∙ 12y ago
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What are the disadvantages of aluminum over steel as a reinforcement bar?
They are too numerous to mention! Steel embedded in concrete is protected from corrosion by the high alkali content of concrete. New concrete is 13-13.2 pH when poured. The chemical reaction that takes place between the concrete and steel forms what is called a 'Passivating Layer' on the steel. This layer, kept intact will prevent rust from occurring on the steel. Google, passivating layer and read. It is very important to keep this high pH during a concrete structures life. One way this is done is to waterproof the concrete. Aluminum doesn't share this characteristic and corrodes quite easily when placed in concrete. This why, if an Aluminum railing post is to be embedded in a concrete a core is extracted, an appropriate filler material is placed in the hole, then the Aluminum is inserted. Filler materials [usually an epoxy] isolate the Aluminum from contact with the concrete and also prevent electrical currents from flowing. If aluminum is IN the concrete, Dissimilar metal corrosion begins day one between steel and aluminum. In short order the aluminum will be a powder. Steel cost less, easier to work with and can be welded conventionally on site.
How do you protect construction steel bars from corrosion?
the concrete cover protects the steel bars from corrosion and environments or members more prone to corrosion or chemical attack such as in footings the cover thickness is increased in members where the concrete will come to direct contact with the soil a blinding layer of about 10cm is used to separate the reinforced concrete from the soil. also coating steel bars in corrosion resisting chemicals is used for more protection
Can aluminum can be used for concrete reinforcement?
Concrete and Steel have very similar strain values (0.0035 and 0.003). They also have very similar temperature coefficients (10e-6 and 12e-6). This means that concrete reinforced with steel will bend and deform uniformly under load and temperature changes. Aluminum has a very different strain and temperature coefficient (0.016 and 22e-6). This means that while, yes, aluminum can be used for concrete reinforcement, the behaviour of an aluminum-reinforced concrete beam is much more difficult to predict. The strength of an aluminum-reinforced concrete beam would vary as the temperature changed and it would vary with the deflected shape. I would not recommend using aluminum to reinforce concrete.
Why aluminum parts should not be in contact of concrete?
I believe that Concrete is naturally acidic so if any moisture of -any- amount gets in contact it will eat at the aluminum. It's not really a question of IF it will degrade it's just a matter of how fast it will degrade.
What different materials are bridges made of?
Favorite materials for bridges include steel, aluminum, titanium, wood, stone, and reinforced concrete.
What has the author Francisco Presuel-Moreno written?
Francisco Presuel-Moreno has written: 'Identification of commercially available alloys for corrosion-resistant metallic reinforcement and test methods for evaluating corrosion-resistant reinforcement' -- subject(s): Alloy steel, Bridge decks, Bridges, Concrete, Concrete Bridges, Corrosion, Corrosion resistance, Corrosion resistant steel, Floors, Prevention, Properties, Reinforced concrete, Reinforcing bars, Stainless Steel, Steel, Steel alloys, Steel, Stainless, Testing, Weathering steel
What are the disadvantages of aluminum over steel as a reinforcement bar?
They are too numerous to mention! Steel embedded in concrete is protected from corrosion by the high alkali content of concrete. New concrete is 13-13.2 pH when poured. The chemical reaction that takes place between the concrete and steel forms what is called a 'Passivating Layer' on the steel. This layer, kept intact will prevent rust from occurring on the steel. Google, passivating layer and read. It is very important to keep this high pH during a concrete structures life. One way this is done is to waterproof the concrete. Aluminum doesn't share this characteristic and corrodes quite easily when placed in concrete. This why, if an Aluminum railing post is to be embedded in a concrete a core is extracted, an appropriate filler material is placed in the hole, then the Aluminum is inserted. Filler materials [usually an epoxy] isolate the Aluminum from contact with the concrete and also prevent electrical currents from flowing. If aluminum is IN the concrete, Dissimilar metal corrosion begins day one between steel and aluminum. In short order the aluminum will be a powder. Steel cost less, easier to work with and can be welded conventionally on site.
What has the author D D Higgins written?
D. D. Higgins has written: 'Repairs to concrete affected by reinforcement corrosion' -- subject(s): Reinforced concrete, Corrosion 'Efflorescence on concrete' -- subject(s): Surfaces, Concrete, Efflorescence, Defects
How do you protect the rebar of concrete submerge in sea water of corrosion and where the standar how speak about this?
I would think they have plastic coated bar. Stainless steel would be very expensive. And I would imagine plastic coated isn't cheap.
What has the author William C McBee written?
William C. McBee has written: 'Modified-sulfur cements for use in concretes, flexible pavings, coatings, and grouts' -- subject(s): Sulphur cement 'State-of-the-art guideline manual for design, quality control, and construction of sulfur-extended-asphalt (SEA) pavements' -- subject(s): Asphalt Pavements, Sulfur, Sulphur 'Corrosion-resistant sulfur concretes' -- subject(s): Corrosion, Sulphur concrete 'Sulfapave' -- subject(s): Concrete Pavements, Corrosion, Sulphur concrete 'Isothermal aging of vapor deposited aluminum-copper alloy films' -- subject(s): Aluminum-copper alloys 'Sulfur construction materials' -- subject(s): Sulphur in building
What has the author Imre Biczo k written?
Imre Biczo k has written: 'Concrete corrosion, concrete protection'
How do you protect construction steel bars from corrosion?
the concrete cover protects the steel bars from corrosion and environments or members more prone to corrosion or chemical attack such as in footings the cover thickness is increased in members where the concrete will come to direct contact with the soil a blinding layer of about 10cm is used to separate the reinforced concrete from the soil. also coating steel bars in corrosion resisting chemicals is used for more protection
Why is clear cover required in concrete?
There are several reasons, but corrosion protection and concrete spauling are probably the most important factors.
Can aluminum can be used for concrete reinforcement?
Concrete and Steel have very similar strain values (0.0035 and 0.003). They also have very similar temperature coefficients (10e-6 and 12e-6). This means that concrete reinforced with steel will bend and deform uniformly under load and temperature changes. Aluminum has a very different strain and temperature coefficient (0.016 and 22e-6). This means that while, yes, aluminum can be used for concrete reinforcement, the behaviour of an aluminum-reinforced concrete beam is much more difficult to predict. The strength of an aluminum-reinforced concrete beam would vary as the temperature changed and it would vary with the deflected shape. I would not recommend using aluminum to reinforce concrete.
What causes the corrosion of metallic structures and crumbling of concrete and rocky structures?
Acid Rain.
What has the author Martin E Moss written?
Martin E. Moss has written: 'Prestressed concrete durability & corrosion' -- subject(s): Prestressed concrete, Testing
Which noun is aluminum?
The noun 'aluminum' is a common, concrete, uncountable (mass) noun; a word for a metallic element; a word for a thing.
