Historical: Ready Mixed Concrete (LWC 3000-4000psi) - 2015
This information reflects our best understanding of product composition in 2015, with the exception of the following components that have since had their composition updated: Trace Elements in Unprocessed FGD Gypsum (updated 2023).
Like normal weight concrete, structural lightweight concrete is highly customizable in composition. In general, lightweight concretes rely on lighter aggregates (both course and fine) and can use air entraining admixtures to add substantially more...
More about Historical: Ready Mixed Concrete (LWC 3000-4000psi) - 2015
Like normal weight concrete, structural lightweight concrete is highly customizable in composition. In general, lightweight concretes rely on lighter aggregates (both course and fine) and can use air entraining admixtures to add substantially more air to the concrete than is typically seen in NWC of the same strength. Depending on the specifications, a portion of the fine lightweight aggregate can be replaced with sand, but this improvement in strength comes at an increase in weight. This Common Product profile describes the composition of a lightweight 3,000 – 4,000 psi concrete for construction in the San Francisco Bay area.
A more up to date Common Product is available here: Ready Mixed Concrete (Structural, LWC 3000-4000 psi).