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Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 16 Abstracts search results
Document:
SP81-06
Date:
November 1, 1984
Author(s):
R. John Craig, Sitaram Mahadev, C.C. Patel, Manuel Viteri, and Czaba Kertesz
Publication:
Symposium Papers
Volume:
81
Abstract:
From exploratory research of reinforced fibrous concrete, it has been shown that fibrous concrete is potentially superior and less costly than the conventional reinforced concrete. The testing program consisted of ten beam column joints with half of these joints containing 1.5 percent by volume of concrete of steel hooked end fibers. The beam column joints were constructed with less hoops than a conventional seismic joint would have, ac-cording to design specifications of the American Concrete Institute code ACI 318-77). In studying the behavior of these beam column joints, two failure conditions were found: 1) critical regions whose inelastic behavior is controlled by bending, and 2) critical regions whose inelastic behavior is controlled by high shear existing in the region. The results of the testing will be described. From the analysis of the results, it can safely be concluded that the hooked end steel fibers in the joint region provided: 1) better bond; 2) better confinement of the concrete; 3) a stiffer member; 4) higher moment capacity; 5) higher shear strength; 6) more ductility; and 7) significant improvement in the energy dissipation capacity than did the plain concrete joint.
DOI:
10.14359/6448
CI0609Fraser
September 1, 1984
D .J. Fraser,
Concrete International
6
Issue:
9
Usefulness of the equivalent frame method to predict the structural response of a flat plate structure depends on realistic values of the stiffness of the equivalent beam, of the initial joint moments, and of the fractions of the total frame moments for distribution across the panel. If criticisms of the rules in ACI 318-77, complex-ity and ambiguity, are to be allayed, then rules for those dominant steps in the procedure need to be improved and simplified. This paper presents a revised set of rules for flat plate construction that were derived from a series of finite element analyses in which the real flat plate behavior was simulated by beam-slab floors of uniform thickness. The new rules involve direct evaluation of
CI0603Ginsburg
March 1, 1984
Shlomo Ginsburg
3
A microcomputer program that allows users to scan the ACI Building Code, check designs, and study topics on reinforced concrete has been developed for both teaching and engineering practice. The program consists of a checklist based upon the Building Code Re-quirements for Reinforced Concrete (ACI 318-77). The program allows the user to retrieve information pertaining to a specific design or the most important general aspects of reinforced concrete design. It enables users to check a solution as well as learn and review material.
CI0508Zia
August 1, 1983
Paul Zia
5
8
The current code provisions of ACI 318-77 are reviewed relative to structural design with high-strength concrete. Those provisions, affected by the properties of high-strength concrete, are identified and examined in light of currently available information. Where appropriate, possible modifications to the design provisions are suggested. Provisions that need revision when additional research data are obtained are also identified.
CI0412Committee318
December 1, 1982
ACI Committee 318
4
12
Presents a number of revisions to the ACI Building Code and Commentary. The revisions deal with scope, definitions, concrete quality, analysis and de-sign, strength and serviceability, flexure and axial laods, shear, details and development of reinforcement, two-way slabs, walls, prestressed concrete, shells and folded plates, and seismic design.
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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.
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