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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 65 Abstracts search results
Document:
SP164-39
Date:
November 1, 1996
Author(s):
Brian K. Bramel, Charles W. Dolan, Jude Kostage and J. A. Puckett
Publication:
Symposium Papers
Volume:
164
Abstract:
An Asphalt Plug Joint (APJ) produced by Koch was physically tested in a pilot study sponsored by the Wyoming Department of Transportation at the University of Wyoming. An APJ was built, instrumented, and cycled to simulate 10 years of service for spring, fall, summer and winter conditions. A crack occurred during the winter cycling and was repaired. The joint was then tested until failure. Failure occurred as a joint material separated from the joint edge. The joint motion was concentrated between the bridging plate and the joint end. The APJ material exhibited both visco-elastic behavior and a brittle transition temperature in the operating temperature range. The pilot study is being extended to further investigate the nature of the joint and the material.
DOI:
10.14359/14325
SP164-35
Mauro Dolce, Biagio Filardi, Robert Marnetto and Domenico Nigro
A new biaxial elasto-plastic device is described. The device is made up of bended U-shaped steel elements arranged in a radial pattern. Each element can deform along any direction. The radial arrangement allows for a full exploitation of the energy dissipating capability of each element as well as for the possibility of calibrating the resisting forces in the horizontal directions. The experimental and the numerical results show a good non linear behavior of the U-elements as well as of the complete device, with high energy dissipation capacity and allowance for large displacements. Some applications on bridges are described in order to show the potential uses of this device.
10.14359/14321
SP164-36
Renzo Medeot
In recent years, the European techno-scientific community has been called upon to make great efforts to draft new building codes: the so called 1 (JROC'ODES. Each of the latter, has required in turn the drafting of Standards on the design and manufacturing requirements of specific devices such as structural bearings, pre-stressing systems, etc. Within this framework. Sub-Committee TC 167 - SC 1 - ANTISE[SMIC DEVICES was constituted and held its Kick-Off Meeting in October 1993. The scope of this sub-committee is to proceed with the standardization of antiseismic devices for use in structures erected in seismic areas in accordance with EUROCODE 8. Antiseismic devices include shock-transmitters, isolators, hydraulic dampers, etc. As it is well known, antiseismic devices were developed within the last two decades; above all, in relation to the dissemination of the "Seismic Isolation" concept, but they have found valid employment in other seismic strategies. The paper illustrates the structure of the Eurupcun Standard, the criteria adopted in its drafting, the procedures to follow for its approval, and some of the aspects which render this document innovative.
10.14359/14322
SP164-37
A. H. Muhr
The linearised beam-column theory for the mechanics of laminated bearings is summarised and theory is presented for the "lift-off" behaviour seen at large shear deflections when bearings are located in recesses, rather than bolted. Experiments show that an axial load increases the dynamic shear stiffness and damping of a single high damping natural rubber layer, but in accord with the theory the shear stiffness of laminated bearings is reduced by an axial load while the damping is increased. Results of tests to failure for 17 permutations of axial load and bearing specification show that the shear capacity exceeds 70% of the plan dimension in all cases except for a squat design with thin endplates located in a recess. The shear capacity of such bearings is limited by yield of the endplates rather than rupture or instability.
10.14359/14323
SP164-32
Dan Erhardt
Elastomeric concrete was first successfully used on the Boulevard Peripherique in Paris in 1970 on the heavy truck trafficked lanes of this high traffic volume motorway. Developed by Marcel Ceintry, an experience Chemical Civil Engineer, certain fundamentals vital to long term performance were specified at that time, however as elastomeric concrete migrated to North American and other countries, a number of entrepeneurs came force with cosmetic copies in an attempt to create competition. This paper defines the fundamentals for successful performance as it relates to proper installation techniques that have been learned by a profession installing contractor during the past couple of decades.
10.14359/14318
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