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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: Field Performance Laboratory Simulation Tests for and Bridge Sealers
Author(s): George S. Kozlov
Publication: Special Publication
Appears on pages(s): 335-351
Keywords: bridge decks; durability; joint sealers; joints (junctions); laboratory tests; manufacturing; performance tests; plastics, polymers and resins; quality control; resilience; rubber; seepage; specifications.
Abstract:The purpose of this research effort was to develop a realistic material specification closely related to the actual field performance of sealers. It succeeded in developing a method for testing the life expectancy of subject sealers by measuring the loss of sealer resiliency due to continuous simulated bridge end movements induced by actual environmental changes. Data gathered through such testing has established that the quality of preformed sealers is significantly nonuniform. This deficiency is believed to be a consequence of a general lack of sufficient uniformity in the production of synthetic rubber products. As a result of these and numerous other laboratory tests, it was determined that the current sealer specification, although having served to insure product quality on many occasions, evidently has failed in a significant number of instances to identify a sealer's total inadequacy for its intended purpose. However, the research indicated that, except for the addition of the compression set test and an upgrading of the minimum pressure requirement, most physical requirements in the subject specification cannot be improved. Unfortunately, the ultimate solution to the critical problem of identifying adequate sealers for bridge decks remains essentially unestablished. The task of quality assurance, therefore, still rests for the most part with the sealer manufacturers and their rubber specialists.
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