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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: Refining Differential Shortening Predictions In Tall Buildings For Improved Serviceability
Appears on pages(s):
Abstract:High strength concrete (HSC) or high performance concrete (HPC) is commonly used in vertical elements of tall buildings. Such material can provide reduced column cross-sectional areas and generally increase the functional efficiency of the structure. Vertical concrete elements axially shorten over time due to shrinkage effects, creep and elastic deformation. Models that are currently used to predict shortening generally use concrete strength (f’c) and derived values for concrete creep, elastic modulus and drying shrinkage. Much of the work in this area is theoretical. As materials used for
concrete manufacture vary significantly across Australia, typical or generally derived values for various mechanical properties can be significantly different depending on where a building is to be
constructed. For these reasons, estimations of shortening based solely on f’c and general values for
concrete material properties may lead to inaccurate prediction and thereby potentially reduce
serviceability. This paper presents a summary of research work currently under way on verifying model predictions of differential shortening in tall buildings.
Concrete Institute of Australia, International Partner Access.
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