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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: Polymer Repairs to Concrete: Their Influence on Structural Performance
Author(s): G. C. Mays and W. B. Wilkinson
Publication: Special Publication
Appears on pages(s): 351-376
Keywords: concretes; durability; epoxy resins; patching; repairs; plastics, polymers, and resins; polyester resins; Structural Research
Abstract:Damage to reinforced concrete structures in the form of spalled concrete may occur either as a result of reinforcement corrosion, impact damage, or from the effects of fire. A widely accepted method of patch repair is by making use of either resin mortars or polymer modified cementitious systems. At the present time the durability of such methods, particularly to chloride attack, is the subject of several independent studies. However, these materials may have very different thermal and time-dependent properties to the steel or concrete to which they are bonded. This aspect of the concrete repair process has so far received little attention. An experimental and analytical program of research is in progress to evaluate the structural integrity of such patches. The paper describes the initial test series involving patch repairs within both the tension and compression zones of flexural specimens. Repair materials having a wide range of elastic and thermal characteristics have been used in patches of varying shapes and sizes. Their effect on short-term structural performance is assessed and conclusions drawn as to the relative performance of a range of systems.
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