Concrete reinforced with fibers (which are usually steel, glass, or plastic fibers) is less expensive than hand-tied rebar, while still increasing the tensile strength many times. The shape, dimension, and length of the fiber are important.
1. ozone hole-an area of the ozone layer (near the poles) that is seasonally depleted of ozone. hole-an opening into or through something. ozone layer, ozonosphere-a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun.ole-an opening into or through something. ozone layer, ozonosphere-a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun.
Ozone is a gas that is formed in the atmosphere when three atoms of oxygen combine. Ozone is found high in the Earthâs upper atmosphere and at ground level. Ozone has the same chemical structure wherever it occurs.zone is a gas that is formed in the atmosphere when three atoms of oxygen combine. Ozone is found high in the Earthâs upper atmosphere and at ground level. Ozone has the same chemical structure wherever it occurs.