In order to create an environmentally-conscious building, the environmental impacts of the entire service life must be known.Life-cycle assessment (LCA), which evaluates the impacts from all life-cycle phases, from "cradle to grave," is the best method to achieve this goal.Ready mixed concrete is proportioned and mixed off the project site.The concrete is delivered to the site in a truck agitator (often incorrectly called a “cement truck”) but can also be delivered in a non-agitating truck.The New American Home® (TNAH) 2008 has been certified through the ENERGY STAR® program.The exterior structural walls were built with a combination of lighweight autoclaved aerated concrete blocks (AAC), and traditional poured-in-place concrete.Extra concrete is often returned to the ready-mix plant where it is recycled or used to make jersey barriers or retaining wall blocks; or it can be washed to recycle the coarse aggregate.
During the life of the structure: Energy Performance and Thermal Mass. Concrete stands up to natural disasters, wind-driven rain, moisture damage, and vermin. Using light- or natural-colored material helps reduce the heat island affect.Self-compacting concrete, also referred to self-consolidating concrete, is able to flow and consolidate under its own weight and requires no vibration. After the concrete is placed, a satisfactory moisture content and temperature is required for concrete to develop adequate strength and durability; this is called the curing process.Curing compounds or other surface treatments prevent the rapid loss of moisture from the surface of concrete and aid in the curing process. Exposed concrete surfaces, usually the top surface, generally require finishing if they will be visible.Strategies, examples and detailed instructions help users understand how concrete can contribute to urban heat island reduction, energy savings, storm water quality and quantity, recycled content and local availability credit.Available as a free The 2005 volume of the ASHRAE Handbook covers basic principles and provides essential data for HVAC&R design.