The rule of thumb is to consider that a 94 lb. bag of cement will make one cubic foot when it is freshly packed. The density of lightweight concrete is 1920 kg per cubic meter or 116 lbs per cubic foot (3132 lbs per cubic yard).Lightweight concrete weighs less because it is made with an aggregate called pumice, a naturally light mineral.Density is simply a mass to volume ratio.he rule of thumb is to consider that a 94 lb. bag of cement will make one cubic foot when it is freshly packed. The density of lightweight concrete is 1920 kg per cubic meter or 116 lbs per cubic foot (3132 lbs per cubic yard).
amblyopia amÂ·blyÂ·oÂ·piÂ·a (Äm'blÄ-Å'pÄ-É) n. Dimness of vision, especially when occurring in one eye without apparent physical defect or disease.
Lazy eye, or amblyopia, is the loss or lack of development of normal vision in one eye that is unrelated to any eye health problem and cannot be corrected with lenses. It can result from a failure to use both eyes together.