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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
Date:
January 1, 1981
Author(s):
Editor: Stewart C. Watson
Publication:
Symposium Papers
Volume:
70
Abstract:
SP70 The proceedings of the World Congress on Joint Sealing and Bearing Systems for Concrete Structures reports on new developments and case histories. General subjects include: movements and forces, bearings, joints, materials, architectural applications, seismic considerations, pavements, and research and development.
DOI:
10.14359/14122
SP70-05
Mary Emerson
One of the research programmes in progress at the Transport and Road Research Laboratory is to investigate the thermal behaviour of concrete bridges in the United Kingdom. Part of the work involved the measurement of the longitudinal movement of bridge decks caused by changes in temperature. Some of these measurements of movement were made continuously for periods of up to five years at any one site and the types of bridge instrumented include concrete box (single and multi-cell), concrete beam and slab and solid concrete deck. A brief description of the instrumentation is given and the results discussed include measured values of daily and annual ranges of movement, the seasonal effect on the measured movement of shrinkage of the concrete and short and long term values of the coefficient of thermal expansion of the deck. It is also shown how both daily and annual maximum values of movement may be predicted from a knowledge of the temperature of the deck, which, in turn, may be derived from the variation in the shade air temperature. This knowledge enables the bearings and expansion joints to be set at their correct positions within the design range of thermal movement of the deck.
10.14359/17403
SP70-10
Maurice G. Baigent
There are a number of pitfalls from specification to the final installation of bridge bearings into a structure. The majority of the problems originate from a lack of attention to fundamental practical considerations. This paper is particularly directed to engineers involved in the specification, approval and installation of mechanical bridge bearings. A number of important aspects of bridge bearing design, manufacture and quality control are highlighted.
10.14359/17408
SP70-49
A. Craig Roland
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.
10.14359/17447
SP70-63
P. Smith
Many important issues about bearings were identified by Fritz Leonhardt, keynote speaker at the Congress. His main point was that bearings should be designed and installed to function effectively for up to 100 years. Problems in achieving this goal were discussed. . .The session identified areas in which additional work is needed; these are summarized in a table. The resolution, carried during the Congress, to form a permanent technical committee on bearing systems, a companion to ACI Committee 504, Joint Sealants, is a first step in improving communications. The Congress, attended by over 300 people, was an outstanding success.
10.14359/17461
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