Title: Tests for Precast Wall Panels
Author(s): Subcommittee V, ACI Committee 533
Publication: Journal Proceedings
Appears on pages(s): 369-382
This report is submitted for discussion prior to preparing a recommended practice. Emphasis is placed on those specification and production control tests and procedures which have led to confusion among architects, engineers, prefabricators, and owners. Tests for compressive strength and for freeze-thaw durability are discussed. Standard 6 x 12-in. cylinders are recommended for compressive strength samples wherever such procedure is practical. Otherwise, 4-in. cubes are suggested, the test results of which should be reduced 20 percent as an estimate of cylinder strength. Due to the vertical orientation of most wall panels, specification of freeze-thaw testing is not recommended generally. The report recommends that wall panel concretes should be air entrained without specification of a fixed percentage of air content. A preliminary list of needed research is included.