It depends on the moisture content of the soil, the acidity of the soil as well as other factors. "But practically, the answer is forever."
reinforced concrete
Steel reinforced concrete is concrete with rods of steel running through it.
cover it
Yes, concrete is porous and water will move through it over time.
A layer of rock or soil that does not allow water to pass through it .
Deformed steel bar is more commonly known as reinforcing bar, or rebar. These steel bars are imbedded in concrete to provide tensile strength. Smooth bars are run through rollers which "deform" the bar thereby adding ribs. The ribs provide a mechanical bond between the steel bars and the surrounding concrete.
Solar energy is a slow-forming renewable resource. It takes many Earth years for helium and hydrogen to worm its way through the sun's matter. After that, heat and energy must travel approximately 93 million miles to reach eArth's atmosphere.
reinforced concrete
Steel reinforced concrete is concrete with rods of steel running through it.
radio and tv beams can pass through concrete as x-rays pass through the body
No
no
no they only eat through wood
Not unless the light is very strong and the concrete is quite thin.
Some concrete nouns from A to Z are:applebellcowdeltaeggfootgingerharpicejonquilkiteloommeatnestorangepillquailrugstampturtleumbrellavestwaterxylophoneyamzircon
Through inductive reasoning
Sunglasses are a concrete noun- you can touch them. They are, of course, not made out of concrete. They would be very hard to see through. And rather heavy.