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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Behavior Of Shrinkage Compensating Concrete In An Unrestrained And Restrained Environment
Author(s): Chris Ramseyer, Kyle Renevier, and Seth Roswurm
Publication: Special Publication
Appears on pages(s): 1-20
Keywords: shrinkage compensating concrete, water tank, concrete wall, restraint, slab-on-grade, vibrating wire strain gages
Abstract:Type K Shrinkage Compensating Concrete (SCC) concrete is uniquely suited for use in slabs and walls because it typically requires fewer expansion joints than a convention portland cement (PC) concrete. This allows for continuous placement of much larger slabs and walls and facilitates the construction of high performance smooth slabs with few interruptions. Typically shrinkage-compensating concrete construction practice is to pour adjoining wall sections a minimum of five days apart in order to allow for the initial expansion of the material. The need for unrestrained expansion is implied in the ACI 223R-10 Design Guide in Chapter 5 in a discussion on sequencing the placement of wall segments. This paper discusses testing that was performed at two different locations, spanning both two different times of year and two unique climates. The tests used vibrating wire strain gages (VWSG) to
investigate the restrained behavior of a wall segment in a six million gallon clear well tank in Springfield, IL, as well
as the unrestrained behavior of two slabs-on-grade in Los Angeles, CA. Measurements were taken for a minimum
of 30 days and a maximum of 170 days. Testing results are then compared to similar scenarios using ordinary PC concrete.
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