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Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 13 Abstracts search results
Document:
17-301
Date:
July 1, 2018
Author(s):
Jose E. Garcia, C. Neil Satrom, James O. Jirsa, and Wassim M. Ghannoum
Publication:
Structural Journal
Volume:
115
Issue:
4
Abstract:
Four 1.4 m (54 in.) prestressed concrete I-girders were tested to evaluate the feasibility of using carbon fiber-reinforced polymer (CFRP) sheets and anchors to increase the shear capacity of large prestressed concrete members. One specimen was a control test with no strengthening. CFRP sheets were applied in the vertical direction for one test and in the vertical and horizontal directions for two tests. CFRP anchors were used to anchor the CFRP strips and to provide for transfer of stresses from the strip to the concrete when the CFRP strip debonded. The unidirectional application of CFRP resulted in a higher shear cracking load but no significant increase in shear capacity. The addition of horizontal CFRP strips led to almost a 40% increase in shear strength. The addition of CFRP also resulted in increased shear deformation capacity before failure. An important aspect of the study was the use of anchors at reentrant corners, such as those at the top and bottom of the web of an I-girder, to allow the development of the CFRP strip capacity on a non-rectangular section.
DOI:
10.14359/51702234
D106-S02
March 1, 2009
Abdelsamie Elmenshawi, N. Subramanian, and Andor Windisch
106
2
Disc. 105-S28/From the May-June 2008 ACI Structural Journal, p. 290. Plastic Hinge Length of Reinforced Concrete Columns. )Paper by Sungjin Bae and Oguzhan Bayrak). Discussion by N. Subramanian. Disc. 105-S28/From the May-June 2008 ACI Structural Journal, p. 290. Plastic Hinge Length of Reinforced Concrete Columns. (Paper by Sungjin Bae and Oguzhan Bayrak). Discussion by Abdelsamie Elmenshawi. Disc. 105-S29/From the May-June 2008 ACI Structural Journal, p. 301. Control of Flexural Cracking in Reinforced Concrete. (Paper by R. Ian Gilbert). Discussion by Andor Windisch. Disc. 105-S30/From the May-June 2008 ACI Structural Journal, p. 308. Shear Strength of Thin-Webbed Post-Tensioned Beams. (Paper by Miguel Fernandez Ruiz and Aurelio Muttoni). Discussion by Andor Windisch.
10.14359/56365
91-M09
January 1, 1994
ACI Committee 301
Materials Journal
91
1
These specifications are a reference standard which the engineer or architect may make applicable to any building project by citing them in the project specifications. He supplements them as needed by designating or specifying individual project requirements. The document covers materials and proportioning of concrete; reinforcing and prestressing steels; production, placing, and curing of concrete; and formwork design and construction. Methods of treatment of joints and embedded items, repair of surface defects, and finishing of formed surfaces are specified. Separate chapters are devoted to slab construction and finishing, architectural concrete, massive concrete, and materials and methods for constructing post-tensioned concrete. Provisions governing testing, evaluation, and acceptance of concrete as well as for acceptance of the structure are included.
10.14359/4452
88-M60
September 1, 1991
88
5
Separate chapters are devoted to specific types of concrete deterioration. Each chapter contains a discussion of the mechanisms involved and the recommended requirements for individual components of concrete; quality considerations for concrete mixtures; construction procedures; and influences of the exposure environment, all of which are important to assure concrete durability. Some guidance as to repair techniques is also provided.
10.14359/2216
86-S11
January 1, 1989
86
These specifications are a reference standard that the engineer or architect may make applicable to any building project by citing them in the project specifications. He supplements them as needed by designing or specifying individual project requirements. The document covers materials and proportioning of concrete and reinforcing and prestressing steels; production, placing, and curing of concrete; and formwork design and construction. Methods of treatment of joints and embedded items, repair of surface defects, and finishing of formed surfaces are specified. Separate chapters are devoted to slab construction and finishing, architectural concrete, massive concrete, and materials and methods for constructing post-tensioned concrete. Provisions governing testing, evaluation, and acceptance of concrete, as well as acceptance of the structure, are included.
10.14359/2686
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