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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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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: The Influence Of Drying Shrinkage On Long-Term Joint Movement In A Multi Level Car Park
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Abstract:Concrete drying shrinkage limits are commonly specified for the construction of large flat slabs in structures in order to potentially reduce the risk of cracking. Such specifications alone will not ensure good serviceability performance of slabs. Contractually, natural test variations in the measurement of
drying shrinkage are generally not taken into account in construction documentation. To test the relationship between joint movement, cracking and drying shrinkage, a commercial R&D program was conducted between 1998 and 2001. The study focused on a set of concretes used in the construction of a multi-level car park structure in Sydney. Restraints were included in the analysis as parameters and linked to movement and stress conditions. Work included a project specific review of the fresh and hardened concrete data on the materials used, modelling longterm creep, shrinkage, elastic modulus and compressive strength versus time. Key findings were that restraint conditions were highly significant in determining the response of the structure to shrinkage of concrete and other element deformations. In addition, design and detailing of localised areas were found to be important in managing shrinkage related displacements.
Concrete Institute of Australia, International Partner Access.
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