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What method can by utilized for clearing out concrete inside a two inch PVC conduit?
LesSmith
I have used muriatic acid on smaller diameter pipes. A stronger version is hydrochloric acid, also keep in mind AAA always add acid first. Engineers hate this procedure. If the blockage is not too thick it might work. If you can Hilti some holes to hold the acid this also helps. Then it is just a matter of letting the acid work and working the concrete with a piece of re bar and a hammer. Definitely use protective clothing, I used my rain gear. Good luck.
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∙ 15y ago
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How can you remove concrete without affecting plastic pipes inside?
You can't.
Why does concrete rust?
The Red stain on a concrete surface is actually not the concrete rusting! It is an indication that the embedded steel [Re-Bar] inside the concrete is rusting and the rust color is migrating out to the surface. Concrete itself does experience corrosion that is separate and apart from steel corrosion. ASR, DEF, Efflorescence and Carbonation are the most common conditions of concrete corrosion. A rust stain is a result of steel oxidation [rust] forming. This happens when the pH of the concrete goes below 11.5 and there is moisture and oxygen present within the matrix. The damning part of corrosion cell formation on the steel is the rust expanding and causing cracks in the concrete! This allows an easier path for contaminates, moisture and oxygen to penetrate and cause the corrosion to advance faster.. At some point these cracks will completely dis-bond the concrete from the steel causing chunks of the concrete to fall away. [Called Spalling] It is extremely important to preserve concrete from day one and prevent this "Rusting", unfortunately most people and some contractors do not understand concrete degradation principles. A majority believe that concrete is waterproof and indestructible!! Big Misunderstanding!! The most common reason for rust on concrete is either rebar too close to the surface which will rust , or iron ore either mixed in the aggregate of the concrete or if you have a "pea gravel" decorative top coat, iron ore is quite commonly mixed in with the small stones. Sealing the pea gravel will slow it down, but it will eventually come through. I have seen entire driveways replaced because of this.
Is epoxy required in rebar connections?
Epoxy is not required in rebar connections as concrete and wire are used to hold it in place. Rebar is a reinforcement place inside masonry structures to provide increased strength.
What is the purpose of adding dish soap when mixing concrete?
As I read from a book from the 60's, soap was added to cement plaster when finishing the inside of a pool to make the mixture waterproof , although it seems a bit strange the purpose of the soap additive is to force out bubbles in the concrete, making it more waterproof. From this I assume you may also add soap to concrete floors to help make them waterproof too. For the plaster mix the books states, 1 part cement to 3 parts sand. It specifies 1-1/2 quarts liquid soap to a sack of concrete (1 sack = 94 pounds). Hope this helps!
Why are polymer forms of starch and glycogen utilized as storage forms of glucose by living cells rather than an equivalent amount of free glucose?
Glucose is osmotically actice since it is soluble. This increases the water content inside the cell, the cell eventually burst. Since glycogen and starch are insoluble it is better to convert glucose to starch (in plants) or glycogen (in animals).
What reaming method is there available to remove concrete inside a 2 PVC conduit?
It may be easier to simply cut out the section of conduit and replace it.
What are the methods of bending plastic conduit?
The first step is to place a spring inside the conduit thereby preventing it from snapping
What is difference between cleat and conduit wiring?
Cleat wiring is exposed while in conduit wiring the wires are well protected inside tubes/pipes.
What is demist in driving?
It is the clearing of condensation on the inside of car windows
How do you put a 2 inch piece of condiut inside a half inch piece of conduit without altering the size of the conduit in any way?
It is easy to put a 2-inch long piece of conduit that is less than half an inch in any cross-sectional measure into a half-inch conduit.
How do you make reinforced concrete?
Reinforced concrete is just normal concrete with steel reinforement placed inside.
Why concrete bridges have steel rods inside them?
The steel rods are there to strengthen the concrete - making it reinforced concrete.
How do you strengthen concrete?
you could strengthen it by putting metal bars inside the concrete
How to see inside concrete?
X-ray is used to see inside concrete and is often used to test for cracks in high stress applications.
What is hydraulic means?
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
How do you make a inside of a soccer ball?
With concrete and wood
To rewire a 2 bedroom property that was built in 1956 Can we use the old conduit or Do we need to replace it Currently earth is attached to the conduit itself Any special cables we can use?
If the existing conduit has not been intentionally or accidentally interrupted it is still an adequate ground. If you are in doubt about this or if a test proves that it is not grounded, new conductors including a new ground wire can be pulled inside the conduit. If the existing conduit is flexible conduit and it has "jake" type twist connectors, rewiring with a ground is advisable as those type of connectors do not maintain a good ground connection.
