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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 61 Abstracts search results
Document:
SP94-47
Date:
July 1, 1987
Author(s):
T. Hara and T. Otsuka
Publication:
Symposium Papers
Volume:
94
Abstract:
Tests for four circular segmented tunnel linings are described. Two single-ring specimens had the conventional flat joint and the tongue-and-groove joints at the key segment. The three-ring specimens used a staggered arrangement and had circumferential joints with and without tongue-and-groove configurations. The load was applied from the top and the side wall on the single-ring specimens. The measurements of overall deformation, joint slip at the key segment, and joint opening were used in studies of waterproofing joints of several linings. The type of joint configurations that has been proven satisfactory is the key segment with the tongue-and-groove for the longitudinal joint. This selection is based largely on economic factors. Documented field cases observed in the underground excavations carried out for the electric utility tunnels in the urban areas were presented to investigate the applicable watertightening joint of segmented linings.
DOI:
10.14359/3364
SP94-48
C. Sander
Sealing pavement joints is necessary to minimize seepage of surface water into the subgrade and to prevent pavement damage. Joint seals for airfield pavements assume an additional level of importance since debris that is harbored in these joints can be injested and may damage aircraft engines. The paper briefly reviews a design procedure that has been used by the U.S. Air Force and includes a typical design example.
10.14359/1643
SP94-52
K. Schoenbauer and N. Schaeffer
Despite all of the progress made to date in concrete technology, there is still no reliable means of preventing local voids or cracks in concrete under site conditions. If concrete structures are required to be waterproof, it is always mandatory to provid
10.14359/1625
SP94-45
S. Spells
Certain nonacid curing silicone sealants have been successfully used to seal joints in concrete highways for more than 10 years. The success in highway applications resulted in similar applications for silicones on commercial and military airfields. The u
10.14359/1624
SP94-40
P. Dupeuble
Diaphragm walls owing to their method of construction are discontinuous structures. A new technology for the formation of joints between panels has been developed. This new process allows for the construction of diaphragm walls with mechanical and watertight continuity. Within the last 30 years, diaphragm walling has become a construction technique frequently used for the design of major underground works, often in waterbearing grounds, e.g., quay qalls, excavation supporting, and shaft lining.
10.14359/1714
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