ACI 223.1R: Standard Practice for the Use of Shrinkage-Compensating Concrete


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Title: ACI 223.1R: Standard Practice for the Use of Shrinkage-Compensating Concrete

Author(s): ACI Committee 223

Publication: Concrete International

Volume: 5

Issue: 1

Appears on pages(s): 40-43

Keywords: admixtures; aggregates; calcium aluminate; concrete construction; concrete finishing (fresh concrete); concretes; consistency; curing; drying shrinkage; ettringite; expansive cement concretes; expansive cement, Type K; expansive cement,

Date: 1/1/1983

Shrinkage-compensating concrete is used extensively in various types of construction to eliminate or minimize cracking caused by drying shrinkage. Al-though its characteristics are in most respects similar to those of portland cement concrete, the materials, selecting of proportions, placement, and curing must be such that sufficient expansion is obtained to compensate for subsequent drying shrinkage. This recommended practice sets forth the criteria and practices necessary to insure that expansion occurs at the time and in the amount required. In addition to a discussion of the basic principles, methods and details are given covering structural design, concrete mix proportioning, placement, finishing, and curing. A bibliography of the major references covering expansive cements and concretes is also appended.*