The American Concrete Institute (ACI, www.concrete.org) relies on the work of over 3,000 volunteers who serve on committees to develop the latest codes and reports related to concrete, including a committee on hot weather concreting. The mission of ACI Committee 305 – Hot Weather Concreting is to develop and report information on hot weather concrete practices. Active documents of ACI Committee 305 – Hot Weather Concreting include 305R-10: Guide to Hot Weather Concreting and 305.1-14: Specification for Hot Weather Concreting.
305R-10: Guide to Hot Weather Concreting describes how “…environmental factors, such as high ambient temperature, low humidity, high wind, or both low humidity and high wind, affect concrete properties and the construction operations of mixing, transporting, and placing of the concrete materials.” Further, 305R-10 provides measures that can be taken to minimize the undesirable effects of these environmental factors and reduce the potential for serious problems.
ACI Committee 305 – Hot Weather Concreting organizes 305R-10: Guide to Hot Weather Concreting in the following ten topical areas, about concrete properties and the construction operations of mixing, transporting, and placing of the concrete materials in hot weather, including problems and practices, production and delivery, placing and curing, testing and inspection, etc.:
- Introduction and scope
- Notation and definitions
- Potential problems and practices
- Effects of hot weather on concrete properties
- Production and delivery
- Placing and curing
- Testing and inspection
- References
- Estimating concrete temperature
- Methods for cooling fresh concrete
305R-10: Guide to Hot Weather Concreting is available for order from the American Concrete Institute (ACI, www.concrete.org) in two product formats, as a printed document and as a protected PDF/web view.
Keywords: air entrainment; bleeding; cooling; curing; evaporation; finishing; high temperature; hot weather concrete; hot weather construction; mixture proportioning; plastic shrinkage; plastic shrinkage cracking; production methods; protection period; retempering; slump tests; trial batch; water content.
(Source: American Concrete Institute, www.concrete.org)
More in the next blog about concreting…