论文信息 - Bond Strength and Transfer Length of Pretensioned Bridge Girders Cast With Self-Consolidating Concrete

Bond Strength and Transfer Length of Pretensioned Bridge Girders Cast With Self-Consolidating Concrete

While self-consolidating concrete (SCC) is becoming popular in the United States, there are concerns regarding the bond strength, transfer length, and development length of prestressing strands and mild steel reinforcement with SCC. In this study, a literature survey on the bond strength of SCC was conducted. Pullout tests were performed to determine the bond strength of pretensioning strands and mild steel reinforcing bars. Results show that while the bond strength of SCC with deformed reinforcing bars is adequate, there may be adverse reactions with the use of viscosity-modifying admixtures in SCC.

Christopher Y. Tuan | Amgad F Morgan Girgis | C. Tuan | A. Girgis

[1] P. Carrasquillo. PULLOUT TESTS ON STRAIGHT DEFORMED BARS EMBEDDED IN SUPERPLASTICIZED CONCRETE , 1988 .

[2] Surendra P. Shah,et al. Early-age Bond Strength in Reinforced Concrete , 1987 .

[3] S N Lane. A NEW DEVELOPMENT LENGTH EQUATION FOR PRETENSIONED STRANDS IN BRIDGE BEAMS AND PILES , 1998 .

[4] E. Turiel. The Development of Morality , 2007 .

[5] Y. Chan,et al. Development of Bond Strength of Reinforcement Steel in Self-Consolidating Concrete , 2003 .

[6] N H Burns,et al. DESIGN GUIDELINES FOR TRANSFER, DEVELOPMENT AND DEBONDING OF LARGE DIAMETER SEVEN WIRE STRANDS IN PRETENSIONED CONCRETE GIRDERS. FINAL REPORT , 1993 .

[7] J. Dewar. Properties of hardened concrete , 1992 .

[8] Kamal H. Khayat,et al. Use of Viscosity-Modifying Admixture to Reduce Top- Bar Effect of Anchored Bars Cast with Fluid Concrete , 1998 .

[9] Donald R. Logan,et al. ACCEPTANCE CRITERIA FOR BOND QUALITY OF STRAND FOR PRETENSIONED PRESTRESSED CONCRETE APPLICATIONS , 1997 .

[10] M E Kreger,et al. Development length of 0.6-inch prestressing strand in standard I-shaped pretensioned concrete beams , 1999 .