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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.
Showing 1-5 of 56 Abstracts search results
Document:
SP138-38
Date:
September 1, 1993
Author(s):
F. S. Rostasy and H. Budelmann
Publication:
Symposium Papers
Volume:
138
Abstract:
Post-tensioning of concrete members is a promising field of application for FRP tensile elements. The high tensile strength and good corrosion resistance of FRP can be utilized to compete with prestressing steel tendons. To be able to compete successfully, suitable anchorages for FRP need to be developed. The interactive process of experiments and theoretical models for the development of tendon-anchorage assemblies with high mechanical efficiency is demonstrated. This process is then illustrated for a resin-bonded GFRP anchorage.
DOI:
10.14359/3946
SP138-41
Y. Kaneko, H. Seki, M. Matsushima, and K. Matsui
The permissible crack width of concrete members reinforced by reinforcing steels is generally determined by the durability of the member based on reinforcing steel corrosion. However, since FRP reinforcement does not corrode by rusting, another factor should control permissible crack width for FRP reinforced structures. Paper examines permissible crack width of FRP reinforced concrete members in terms of the esthetics of external appearance. As cracks are wider, appearance deteriorates. Since esthetic evaluation is subjective, the authors used a questionnaire survey to gather information from experts. The surveys were completed by members of the JSCE Research Subcommittee on Continuous Fiber Reinforcing Materials. After reviewing a statistical analysis of the results, the authors offer estimates for permissible crack width of FRP reinforced concrete members.
10.14359/3950
SP138-43
Y. Yamasaki, Y. Masuda, H. Tanano, and A. Shimizu
Presents the test results on fundamental mechanical properties of several kinds of continuous fiber bars. Three kinds of fiber materials (carbon, glass, and aramid) have been used. The shape of the deformed bars differed and the diameter was approximately constant (8 mm). Tensile strength, Young's modulus, tensile creep, and pullout bond strength were tested. The main results were that Young's modulus of carbon fiber bars is about two-thirds that of Young's modulus of steel bars, whereas that of glass fiber bars and aramid fiber bars are nearly one-third that of steel bars; also, the initial slip bond stress and maximum bond stress were more likely to differ with the shape of the continuous fiber bars than with the kinds of fiber materials.
10.14359/3952
SP138-44
S. Kumahara, Y. Masuda, H. Tanano, and A. Shimizu
To estimate the heat resistance of continuous fiber bar, tensile strength of several types of continuous fiber bars were examined under high temperature and ordinary temperature after heating and cooling. The temperature range was 60 to 400 C. It was found that the tensile strength of organic binder bar was recovered under ordinary temperature after heating and cooling compared with higher temperature. Organic binder bars showed little decrease of tensile strength at high temperature. Carbon and glass fibers have more heat resistance than aramid fiber bars.
10.14359/3954
SP138-45
K. Nakano, Y. Matsuzaki, H. Fukuyama, and M. Teshigawara
An experimental investigation was carried out to study and evaluate the flexural performance of concrete beams reinforced with continuous fiber bars (main reinforcing bars and prestressing tendons). Two series of flexural tests were conducted, and the primary variables were fiber material, tensile reinforcement ratio, concrete compressive strength, and bond condition in prestressing tendon. Through this experimental study, the following facts were clarified. The flexural performance of concrete beams reinforced with continuous fiber bars can be evaluated by conventional methods used in concrete beams reinforced with steel bars. The ductility capacity of reinforced concrete beams can be controlled by the compressive failure of concrete, and in prestressed concrete beams, can be controlled by changing unbonded length of prestressing tendon.
10.14359/3955
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