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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: Improving Concrete Performance with Shrinkage-Reducing Admixtures
Author(s): N. S. Berke, L Li, M. C. Hicks, and J. Bae
Publication: Special Publication
Appears on pages(s): 37-50
Keywords: admixtures; air entrainment; chloride; corrosion; corrosion inhibitors; diffusion; durability; freezing and thawing; reinforced concrete; shrinkage; shrinkage reducing admixture; superplasticizers
Abstract:Concrete is one of the most durable construction materials. However, cracking adversely affects its durability, appearance, and functionality. A major cause of the cracking is related to shrinkage-induced strains creating stresses when concrete is restrained. Shrinkage reducing admixtures (SRA's) have been used for several years to reduce drying and autogenous shrinkage. However, their uses in temperate environments were limited due to difficulties in producing good quality air void systems needed for freezing and thawing resistance. In this paper we show that good air void systems and freezing and thawing performance are obtainable with a new formulation of a glycol ether SRA. This formulation is very compatible with polycarboxylate type superplasticizers and calcium nitrite corrosion inhibitor. Furthermore, it is demonstrated that in addition to improving shrinkage and cracking performance, permeability and corrosion performance are improved.
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