What is the typical density of lightweight concrete?

The typical density of lightweight concrete is generally around 110 lb/ft³. Lightweight concrete is specially formulated using lighter aggregates, which results in a lower density compared to normal concrete. This reduction in density can lead to a range of benefits such as decreased dead load on structures, improved thermal insulation properties, and enhanced workability during construction.

In structural engineering, these qualities make lightweight concrete a suitable choice for applications such as infill panels, roof decks, and other structural components that benefit from weight savings without sacrificing strength or durability. The use of lighter aggregates, such as expanded clay, shale, or pumice, is crucial in achieving this lower density.

The other density options listed (120 lb/ft³, 130 lb/ft³, and 145 lb/ft³) are more representative of normal-weight concrete or may fall within the classification of heavier lightweight varieties, but they do not reflect the standard density associated with typical lightweight concrete. Therefore, the selection of 110 lb/ft³ accurately describes the commonly accepted density for this type of concrete.