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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 91 Abstracts search results
Document:
SP128-75
Date:
November 1, 1991
Author(s):
Feng Mingfen
Publication:
Symposium Papers
Volume:
128
Abstract:
This paper presents a new type of lightweight composite materials--calcium silicate board (CSB) produced almost entirely by industrial waste. It possesses light bulk density (below 1100 kg/m3 and rather high strength (flexural strength over 8.0 MPa). Through the standard tests of carbonation, recycling of freezing-thawing, and drying-wetting, the board maintains nearly the same strength, meanwhile having advantages of noncombustibility, sound, and heat insulation. Several engineering application illustrations with satisfactory results and its relevant construction details are introduced. The raw materials as well as the main technological processes are described briefly. As the durability of glass fiber reinforcement in the board is a matter of concern, the relevant analysis based upon the experimental results are also given in this paper.
DOI:
10.14359/2360
SP128-73
C. Goodspeed, M. Zhang, J. Yost, and E. Schmeckpeper
The components of force transfer developed by fiber reinforced plastic (FRP) grids are investigated under uniaxial tension and compression loads and under a bending load. Three contributing mechanisms of force transfer in FRP grids are studied: chemical adhesion between the concrete and resin, bonding along the two rough sides of the longitudinal member, and bearing against one side of the transverse members. Development length necessary for force transfer is investigated in three splice details.
10.14359/2354
SP128-13
Yoshihisa Masuda, Yoshio Uchida, and Yoshiki Tanaka
In this study, the authors investigate shotcrete that is reinforced with steel fibers and partly substitutes ultra rapid hardening cement with silica fume. The results verified that the optimum substitution percentage was to be about 10 percent. The substitution improved bond strength at joints as well as bond strength between steel fibers and concrete at an early age, and silica fume substitution also reduced the dust concentration. It was found that the surface moisture content of fine aggregate should be greater than 4 percent to obtain the expected effect.
10.14359/1877
SP128-12
Sidney Mindess, Cheng Yan, and William J. Venuti
Prestressed concrete railroad ties are subject to repeated impact loads generated by the passage of wheel flats, and this may bring about premature failure of the ties. In an attempt to toughen the concrete matrix, prestressed concrete ties were prepared not only with plain concrete, but also with concretes containing either steel fibers or polypropylene fibers. The ties were tested both statically and using a large instrumented drop-weight impact machine. It was found that, as expected, the steel fibers, and to a lesser extent the polypropylene fibers, improved the resistance of the ties to impact loading.
10.14359/1865
SP128
Editor: V.M. Malhotra
SP128 Leading world experts met in Hong Kong to participate in The ACI conference on Evaluation and Rehabilitation of Concrete Structures and Innovations and Design. The specific purpose of the Conference was to disseminate technical information on emerging concrete technology in the Pacific rim region. You can review the results of that timely event in a two volume document comprised of 90 technical papers. Volume I contains paper dealing with materials. Topics include: high elastic surface coatings, concrete deterioration on high chloride and sulfate environment, nondestructive testing, impact-echo technique, fiber reinforcement, injectable cementitious materials, and case studies. Volume II is comprised of papers pertaining to design aspects. Topics include: concrete for offshore structures, performance of structural repairs, design of high-strength and reinforced concrete structures, design of beams and columns, and case studies.order.
10.14359/14160
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