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Content DescriptionThis report outlines the causes, control, maintenance, and repair of erosion in hydraulic structures. Such erosion occurs from three major causes: caviration, abrasion, and chemical attack. Design parameters, materials selection and quality,environmental factors, and other issues affecting the performance of concrete are discussed. Evidence exists to suggest that given the operating characteristics and conditions to which a hydraulic structure will be subjected, it can be designed to mitigate future erosion of the concrete. However, operational factors change or are not clearly known and hence erosion of concrete surfaces occurs and repairs must follow. This report briefly treats the subject of concrete erosion and repair and provides numerous references to detailed treatment of the subject. Keywords: abrasion; abrasion resistance; aeration; cavitation; chemical attack concrete dams; concrete pipes; corrosion; corrosion resistance; deterioration; Eros ion by chemical attack, erosion; grinding (material removal): high-strength concretes; hydraulic structures; maintenance; penstocks; pipe linings; pipes (tubes); pitting polymer concrete; renovating; repairs; spillways; tolerances (mechanics); wear.
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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 and distribution of consensus-based standards, technical resources, educational & training programs, certification 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. ACI has over 95 chapters, 110 student chapters, and nearly 20,000 members spanning over 120 countries.
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