Ready Mixed Concrete (Structural, NWC 3000-4000 psi)
This information reflects our best understanding of product composition in 2022, with the exception of the following components that have since had their composition updated: Trace Elements in Unprocessed FGD Gypsum (updated 2023).
Concrete is a common construction material, used in many structural applications, and is highly customizable in composition. A “straight mix” concrete is made by mixing Portland cement, water, a coarse aggregate such as gravel, and a fine...
More about Ready Mixed Concrete (Structural, NWC 3000-4000 psi)
Concrete is a common construction material, used in many structural applications, and is highly customizable in composition. A “straight mix” concrete is made by mixing Portland cement, water, a coarse aggregate such as gravel, and a fine aggregate like sand. Often a portion of the Portland cement is replaced by natural pozzolans or synthetic pozzolans such as fly ash, blast furnace slag, silica fume, or ground glass pozzolan. While not included in this Common Product, further details on synthetic pozzolans are available in the Supplementary Cementitious Materials (SCMs) Common Product. Various chemical admixtures are also added to concrete and are highly variable based on local conditions and the desired properties of the concrete. Chemicals identified in admixtures specified under ASTM C494/C494M are included in the All Contents tab of this Common Product. In addition, the All Contents tab includes information on recycled aggregates that may be used in concrete.
Proportions of Portland cement, water, and aggregates vary based on a number of factors including desired slump, size of coarse aggregate, and exposure conditions. In addition, the proportions will depend on whether or not the concrete is air-entrained to improve its freeze-thaw resistance. This Common Product profile describes the straight mix in-situ/ready mix concrete composition for normal weight, air-entrained concrete under severe exposure conditions. The concrete contains a coarse aggregate with a nominal maximum size of 3/4", a desired slump of 3 to 4 inches, and a compressive strength of 4000 psi at 28 days. The replacement of a portion of Portland cement with SCMs and the use of chemical admixtures will alter these proportions, and the exact amounts of all ingredients in concrete will vary based on the contractor, concrete supplier, and the materials used by the supplier to mix the concrete ordered.
The following historical versions of this CP are available:
- Historical: Ready Mixed Concrete (Straight Mix) NWC 3000-4000psi - 2015
- Historical: Ready Mix Concrete (BF Slag) (3,000 - 4,000 psi) - 2015
- Historical: Ready Mix Concrete (Fly Ash) (3,000 - 4,000 psi) - 2015