To stop radiation leaking out. Alpha and Beta types of radiation will be stopped by the concrete
By putting a thin layer of new concrete on top.
The top layer of concrete is called the structural coat. It directly receives the most load which must then be transferred to lower layers.
A mud slab is a thin layer of concrete covering the soil. It can be spray applied with gunnite, similar to a concrete pool lining.
A layer of rock or soil that does not allow water to pass through it .
not normally. it depends on what you are trying to accomplish. if you need a thin layer than you can pour a thin set layer which hardens and adheres better than concrete. if the added part is thicker you can drill holes in the old and put re bar in then pour on top to help tie the two together.
Blanket
The layer of lead around the core of a nuclear reactor is known as the reflector. It helps to reflect neutrons back into the core, increasing the number available for fission reactions. This contributes to the overall efficiency and effectiveness of the reactor.
Do not understand use of the word 'layer'
It is called Lead Shielding.
It is called thermal shield
The thick steel vessel is to contain the high pressure of the water in the reactor, the concrete is to provide radiation shielding, for the operating crew mainly but also to prevent outside equipment from becoming irradiated
A nuclear reactor containment spray system typically consists of a network of pipes and nozzles that spray water or other cooling agents onto the reactor containment structure in the event of an emergency. This helps to remove heat from the reactor and prevent the containment structure from overheating, which can lead to the release of radioactive material. The spray system is designed to provide an additional layer of safety and is activated automatically or manually in response to specific conditions.
The atmosphere.
a blinding concrete is a thin layer of lean concrete
By putting a thin layer of new concrete on top.
Nucleus
Like This: Layer One: GOG OOO GOG Layer Two: 0-0 -Q- 0-0 Layer Three: -0- 000 -0- O = cobblestone Q = nether reactor G = gold blocks - = Air