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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 30 Abstracts search results
Document:
SP105-23
Date:
December 1, 1987
Author(s):
George Y. Wu and Michael P. Jones
Publication:
Symposium Papers
Volume:
105
Abstract:
Paper presents the U.S. Navy's experience with the performance of steel fiber reinforced concrete airfield pavements and techniques evaluated to alleviate the problem of exposed surface steel fibers. The exposed surface steel fibers posed a potential foreign object damage hazard to jet engines and injury hazard to ground support personnel. The Navy has elected to use the standard Navy PCC slab size (12.5 x 15 ft) and thickness for SFRC pavements because of slab curling and corner cracking problems on SFRC pavements. The diamond blade bump grinding technique is preferred for removing surface steel fibers because of its cost and life expectancy.
DOI:
10.14359/2204
SP105-05
Tze-Jer Chuang and Yui-Wing Mai
Theoretical analysis is used to predict bending properties of strain-softening materials from known stress-strain relationships in uniaxial tension and compression. Conversely, given the bending load-displacement relation, it is possible to predict the entire tensile strain-softening response. Bending properties of a polymer concrete have been obtained using the proposed theory and given stress-strain relationships. It is shown that the bending strength is higher than the tensile strength due to the strain-softening effect.
10.14359/2043
SP105-17
P. Balaguru and V. Ramakrishnan
Results of an experimental investigation of the properties of steel fiber reinforced structural lightweight concrete are presented. The concrete was proportioned to obtain a compressive strength of about 6000 psi (41.3 Mpa). The targeted values for slump and air content were 4 to 8 in. (100 to 200 mm) and 8 percent, respectively. Collated fibers 30 mm long with hooked ends were used for the entire investigation. The fresh concrete was tested for temperature, slump, V-B time, flow table spread, air content, and unit weight. The hardened concrete was tested for dry unit weight, compressive strength, flexural strength, splitting tensile strength, and shrinkage. In addition to these results, a comparative evaluation of normal-weight and lightweight fiber reinforced concretes is also presented. Study results show that highly workable, high-strength, lightweight fiber reinforced concrete can be produced successfully. The lightweight concrete has as much energy absorption capacity as the normal-weight concrete.
10.14359/2180
SP105-25
Vijay K. Sood and Sat P. Gupta
In multistory framed structures, three kinds of connections exist, namely, cross-type, tee-type, and knee-type. Experimental investigations were made to study the behavior of 50 such beam-column connections of conventional and steel fiber concrete (SFC) when tested under static, as well as slow-cycle fatigue, loading. In all, 10 cross-type specimens of full-scale two-span beam with column stub were tested. Four cross-type connections were cast with conventional concrete, two with steel fibrous concrete in the entire length and four with SFC in the joint region only. The test results showed that SFC improved the ductility at the joint region, increased load-carrying capacity, decreased crack width, eliminated shear reinforcement, and overcame the problem of spalling of concrete in the joint region. The testing work also included 20 tee-type and 20 knee-type connections with 12 of each tested under static load and eight under slow-cycle fatigue load. The percentage was kept as 0.0, 0.6, 0.8, and 1.0 of concrete volume. Instrumentation was done to measure deflections, rotations, strains, and crack widths.
10.14359/2923
SP105-11
S. Akihama, T. Suenaga, M. Tanaka, and M. Hayashi
Calcium silicates (C4A3S-CS) slag-type low-alkaline cement (CGC) has recently been developed in Japan, mainly to improve the durability of glass fiber reinforced concrete (GFRC). As part of the overall evaluation testing on the performance of GFRC using CGC and AR-glass fiber (New-GFRC), various properties of New-GFRC were tested, such as durability, compressive strength, flexural fatigue, flexural strength using a plank (thick specimen), resistance to freezing and thawing (ASTM C 666), dimensional change under storage in wet and dry conditions, and the adhesive strength between paint and GFRC. As a result of these experiments, it has become clear that New-GFRC excels conventional GFRC in all the properties of durability and both mechanical and physical properties.
10.14359/2120
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