Mixing and Placing Concrete

Code requirements for mixing and placing concrete are outlined in this chapter. Regulations for mixing concrete are also listed. The Building Code Requirements for Structural Concrete and Commentary from the ACI as well as the local code book are recommended as valuable tools for the concrete professional, especially when it comes to determining average compressive strength. The importance of test records, trial mixtures, and trial materials are explained. Code requirements for site preparation are reviewed further into the chapter. The exhibit Concrete Batching presents tables for emission factors for concrete batching in both metric and English units as well as tables outlining equation parameters for both truck mix operations central mix operations. Weather conditions, curing/accelerated curing, and code requirements for depositing concrete are all discussed at the end of the chapter.