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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 56 Abstracts search results
Document:
SP138
Date:
September 1, 1993
Author(s):
Editors: Antonio Nanni and Charles W. Dolan / Sponsored by: ACI Committee 440 and Joint ACI-ASCE Committee 423
Publication:
Symposium Papers
Volume:
138
Abstract:
"The American Concrete Institute sponsored an unprecedented six technical sessions on FRP Reinforcement for Concrete at the Vancouver Conference on March 28-31, 1993. Speakers and attendees were present from Europe, Japan, Canada and the United States. The papers in this Special Publication are organized in the same subject areas as the conference. The subject topic areas and symposium sections are: 1. FRP Material Properties and Testing Methods 2. FRP Reinforcement for Reinforced Concrete 3. FRP Reinforcement for Prestressed Concrete 4. Analysis And Design 5. The Japanese National Project for FRP Development 6. Applications of FRP Reinforcement The 55 technical papers in this report represent the most comprehensive compilation to date of FRP research, design, and application information. A comparison of the papers provides an insight to the approach to the use and development of FRP reinforcement within the research communities of Europe, Japan and North America. The two symposium volumes are also significant because substantial portions of the extensive Japanese national research project have been translated into English. The Japanese papers provide an insight to both the magnitude of the technical work being conducted in Japan and the organization of the Japanese research program." Note: The individual papers are also available as .pdf downloads.. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP138
DOI:
10.14359/14178
SP138-55
H. Ichimasu
Part 1 of this study concluded that reinforcing bar stress intensity can be reduced, thereby confirming the possibility of strengthening. In Part 2, CFRP is bonded by various methods on the lower faces of reinforced concrete slabs. To determine bonding methods in detail, CFRP is studied with respect to the confirmation test and strengthening design methods. Strengthening design and measurement plans are then made for reinforced concrete slabs on an existing bridge. In strengthening design, the main reinforcing bars are strengthened with three to five layers. It is confirmed that the reinforcing bar tensile stress intensity is reduced around 120 to 130 MPa. CFRP may be used as a strengthening material for reinforced concrete slabs. Measurements will be conducted in 1993. Bending resistance will be confirmed directly during existing bridge strengthening operations.
10.14359/4150
SP138-28
Ahmad Hamid, Jesus :Larralde, and A. M. R. Salama
Presents the results of a test program carried out at Drexel University to study the properties of hollow concrete masonry reinforced with fiber glass composite as external reinforcement. The research program was planned to demonstrate the feasibility of using such a technique for hollow masonry walls. The program included tests of 1/3-scale masonry assemblages to determine the compressive strength, flexural strength under in- and out-of-plane loads, and in-plane splitting tensile strength. Widely available commercial-type fiberglass mat and matrix resin were used. The results indicate that the proposed retrofitting technique is very effective and has great potential in improving the strength and deformation properties of hollow concrete masonry.
10.14359/3934
SP138-29
C. W. Dolan, W. Rider, M. J. Chajes, and M. DeAscanis
Four prestressed concrete T-beams were constructed with aramid-based prestressing and parallel fiber rods. Three beams included an externally applied fabric shear reinforcement. The beams were tested and the performance of beams with external fabric shear reinforcement were compared to a control beam without external shear reinforcement. The tests indicate that fiber rods serve as effective prestressing tendon with excellent bond characteristics and shear response predicted by ACI equations. The tests also indicate that the externally applied woven fabric can provide the shear resistance. External shear reinforcement using nonmetallic fabric offers significant opportunities for strengthening existing structures as well as for fabrication of nonmetallic structures.
10.14359/3935
SP138-30
M. R. Ehsani, H. Saadatmanesh, I. H. Abdelghany, and W. Elkafrawy
A new approach for seismic retrofitting of unreinforced masonry structures is presented. Results from flexural tests of six masonry beams are reported. The beams were strengthened by epoxying a composite fabric to their tension face. The variables studied include the type of epoxy, fabric, mortar, brick, and the finished surface of the wall. It is shown that both the strength and ductility of the beams were significantly improved. When a sufficient amount of fabric is used to prevent premature tension failure, the integrity of the beam is maintained until the beam fails by reaching the compressive strength of the masonry.
10.14359/3936
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