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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 64 Abstracts search results
Document:
SP70-49
Date:
January 1, 1981
Author(s):
A. Craig Roland
Publication:
Symposium Papers
Volume:
70
Abstract:
The resources devoted to the develop,emt of continuous sealing glands in the last two decades have in themselves given a vote of confidence to the merits of solving joint sealing problems in bridges with this approach.
DOI:
10.14359/17447
SP70-50
Joseph W. Gallagher
One of the principal causes of corrosion of highway bridges is leakage of dissolved deicing chemicals through expansion joints. Waterproof expansion joints for bridges with movements of four inches (101.6 mm) or more present special design requirements which must be met to achieve adequate performance in long term service.
10.14359/17448
SP70-40
Edward R. Fyfe
The shear-restricted disc bearing with polyether urethane disc element has been used for over 10 years in bridges, buildings and other structures. The long term properties of the polyether urethane disc material in the bearing design have been tested and field proven. The design engineer now has a bearing with full design and high over-design horizontal forces at as low as zero vertical load, rotation capability at low loads (as low as 10 percent of vertical load), high over-load abilities, deflection limiting design capable of extreme rotation situations, low overall height and compact in-plan size, and total flexibility of design with the disc being the only standard component. The design engineer, using the modified up-lift shear-restriction mechanism can accommodate up-lift forces with rotation in all directions within the bearing.
10.14359/17438
SP70-41
Everett E. McEwen and Geoffrey D. Spencer
The design of distribution plates under structural bearings is usually based on an assumption that the stress is distributed fairly uniformly. Thus study was undertaken first of all on a theoretical basis, and then with experimental work to determine the actual distribution of stress. . .Further experimental work is being performed and will be reported in the near future.
10.14359/17439
SP70-42
Jupp Grote
In view of the practically incalculable long-term behaviour of elastomer and all the hazards of rubber products manufactured in small batches, German authorities preferred to lay stress more on the reliability of high-quality performance than on detailed design calculations. They decided on one single approved compound based on polychloroprene, and on a single table of approved dimensions. . .The institution submits an annual report on this quality control.
10.14359/17440
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