Bond, Development, and Anchorage of Reinforcement to Concrete Publications

Aryal, A. M., Truman, K., Darwin, D., and O’Reilly, M. “Anchorage of High-Strength Reinforcing Bars in Concrete,” SM Report No. 151, University of Kansas Center for Research, Inc., Lawrence, KS, January 2023, 300 pp. Download pdf

Adhikari, R., Darwin, D., and O’Reilly, M. “Development Length and Splice Strength of High-Strength Reinforcing Bars in High-Strength Concrete,” SM Report No. 160, University of Kansas Center for Research, Inc., Lawrence, KS, July 2024, 401 pp. Download pdf or KU ScholarWorks

Donahey, R., Darwin, D., “Bond of Top-Cast Bars in Bridge Decks” ACI Journal Vol. 82, No. 5, January-February 1985, pp. 57-66. 

Brettmann, B., Darwin, D., Donahey, R., "Bond of Reinforcement to Superplasticized Concrete," ACI Journal Vol. 83, No. 12, January-February 1986, pp. 98-107. 

Altowaiji, W., Darwin, D., Donahey, R., "Bond of Reinforcement to Revibrated Concrete," ACI Journal Vol. 83, No. 94, November-December 1986, pp. 1035-1042. 

Harsh, S., Shen, Z., Darwin, D., "Strain-Rate Sensitive Behavior of Cement Paste and Mortar in Compression," ACI Materials Journal Vol. 87, No. 55, September-October 1990, pp. 508-516. 

Choi, O., Hadje-Ghaffari, H., Darwin, D., McCabe, S., "Bond of of Epoxy-Coated Reinforcement: Bar Parameters," ACI Materials Journal Vol. 88, No. 26, March-April 1991, pp. 207-217. 

Darwin, D., McCabe, S., Idun, E., Schoenekase, S., "Development Length Criteria: Bars Not Confined by Transverse Reinforcement," ACI Structural Journal Vol. 83, No. 94, November-December 1992, pp. 709-720. 

Darwin, D., McCabe, S., Idun, E., Schoenekase, S., "Development Length Criteria: Bars Without Transverse Reinforcement," SL Report 92-1 University of Kansas Center for Research, Inc., Lawrence, Kansas, April 1992, 68 pp. 

Hadje-Ghaffari, H., Choi, O.C., Darwin, D., and McCabe, S.L., "Bond of Epoxy-Coated Reinforcement to Concrete: Cover, Casting Position, Slump, and Consolidation," SL Report 92-3, The University of Kansas Center for Research, Inc., Lawrence, KS, June 1992, 45 pp.  KUScholarWorks

Hester, C. J., Salamizavaregh, S., Darwin, D., and McCabe, S. L., “Bond of Epoxy-Coated Reinforcement:  Splices,” ACI Structural Journal, Vol. 90, No. 1, Jan.-Feb. 1993, pp. 89-102. 

Darwin, D. and Graham, E. K. “Effect of Deformation Height and Spacing on Bond Strength of Reinforcing Bars,” ACI Structural Journal, Vol. 90, No. 6, Nov.-Dec. 1993, pp. 646-657. 

Hadje-Ghaffari, H., Choi, O., Darwin, D., McCabe, S., "Bond of Epoxy-Coated Reinforcement: Cover, Casting Position, Slump, and Consolidation," ACI Structural Journal Vol. 83, No. 7, January-February 1994, pp. 59-68. 

Idun, E.K., and Darwin, D., "Improving the Development Characteristics of Steel Reinforcing Bars," SM Report No. 41, The University of Kansas Center for Research, Inc., Lawrence, KS, August 1995, 293 pp. KUScholarWorks

​Darwin, D., Tholen, M.L., Idun, E.K., Zuo, J., "Splice Strength of High Relative Rib Area Reinforcing Bars," SL Report 95-3, The University of Kansas Center for Research, Inc., Lawrence, KS, May 1995, 64 pp.  KUScholarWorks

​Darwin, D., Zuo, J., Tholen, M.L., Idun, E.K., "Development Length Criteria for Conventional and High Relative Rib Area Reinforcing Bars," SL Report 95-4, The University of Kansas Center for Research, Inc., Lawrence, KS, May 1995, 75 pp.  KUScholarWorks

Darwin, D., Idun, E.K., Zuo, J., ​Tholen, M.L., "Reliability-Based Strength Reduction Factor for Bond," SL Report 95-5, The University of Kansas Center for Research, Inc., Lawrence, KS, May 1995, 51 pp. KUScholarWorks

Darwin, D., Tholen, M., Idun, I., Zuo, J., "Splice Strength of High Relative Rib Area Reinforcing Bars," ACI Structural Journal 93-10, January-February 1996, pp. 95-107. 

Darwin, D., Zuo, J., Tholen, M., Idun, E., "Development Length Criteria for Conventional and High Relative Rib Area Reinforcing Bars," ACI Structural Journal Vol. 83, No. 32, May-June 1996, pp. 1-13. 

Tan, C., Darwin, D., Tholen, M.L., Zuo, J., "Splice Strength of Epoxy-Coated High Relative Rib Area Bars," SL Report 96-2, The University of Kansas Center for Research, Inc., Lawrence, KS, May 1996, 73 pp.  KUScholarWorks

Darwin, D., Zavaregh, S., "Bond of Strength of Grouted Reinforcing Bars," ACI Structural Journal Vol. 83, No. 94, July-August 1996, pp. 486-495. 

Tholen, M., Darwin, D., "Effects of Deformation Properties on the Bond of Reinforced Bars," SM Report No. 42 University of Kansas Center for Research, Inc., Lawrence, Kansas, September 1996, 395pp. KUScholarsWorks

Wright, J., McCabe, S., "The Development Length and Anchorage Behavior of Headed Reinforcing Bars," SM Report No. 44 University of Kansas Center for Research, Inc., Lawrence, Kansas, September 1997, 154 pp. 

Tholen, M., Darwin, D., "Effect of Reinforcing Bar Deformation Pattern on Flexural Ductility," ACI Structural Journal Vol. 83, No. 4, January-February 1998, pp. 37-42.

Zuo, J., Darwin, D., "Bond Strength of High Relative Rib Area Reinforcing Bars," SM Report No. 46, University of Kansas Center for Research, Inc., Lawrence, Kansas, January 1998, 377 pp. Download pdf KUScholarsWorks

Darwin, D., Idun, E. K., Zuo, J., and Tholen, M. L., "Reliability-Based Strength Reduction Factor for Bond," ACI Structural Journal, Vol. 95, No. 4, July-Aug. 1998, pp. 434-443. 

Idun, E., Darwin, D., "Bond of Epoxy-Coated Reinforcement: Coefficient of Friction and Rib Face Angle," ACI Structural Journal Vol. 96, No. 68, July-August 1999, pp. 609-616. 

Fei, J., Darwin, D., "Fatigue of High Relative Rib Area Reinforcing Bars," SM Report No. 54, University of Kansas Center for Research, Inc., Lawrence, Kansas, July1999, 76 pp. KUScholarsWorks

Azizinamini, A., Darwin, D., Eligehausen, R., Pavel, R., and Ghosh, S. K., “Proposed Modifications to ACI 318-95 Tension Development and Lap Splice for High-Strength Concrete,” ACI Structural Journal, Vol. 96, No. 6, Nov.-Dec., 1999, pp. 922-926. 

Zuo, J., Darwin, D., "Bond Slip of High Relative Rib Area Bars under Cyclic Loading," ACI Structural Journal Vol. 97, No. 2, March-April 2000, pp. 331-335. 

Zuo, J., Darwin, D., "Splice Strength of Conventional and High Relative Rib Area Bars in Normal and High-Strength Concrete," ACI Structural Journal Vol. 97, No. 65, July-August 2000, pp. 630-641. 

Darwin, D., Barham, S., Kozul, R., Luan, S., "Fracture Energy of High-Strength Concrete," ACI Materials Journal Vol. 98, No. 45, September-October 2001, pp. 410-417. 

Miller, G., Kepler, J., Darwin, D., "Effect of Epoxy Coating Thickness on Bond Strength Reinforcing Bars," ACI Structural Journal Vol. 100, No. 34, May-June 2003, pp. 314-320. 

Bournonville, M., Dahnke, J., Darwin, D., "Statistical Analysis of the Mechanical Properties and Weight of Reinforcing Bars," SL Report 04-1, University of Kansas Center for Research, Inc., Lawrence, Kansas, December 2004, 194 pp. KUScholarsWorks

Darwin, D., Lutz, L., Zuo, J., "Recommended Provisions and Commentary on Development and Lap Splice Lengths for Deformed Reinforcing Bars in Tension," ACI Structural Journal Vol. 102, No. 91, November-December 2005, pp. 892-910. 

Seliem, H. M., Hosny, A., Rizkalla, S., Zia, P., Briggs, M., Miller, S., Darwin, D., Browning, J., Glass, G. M., Hoyt, K., Donnelly, K., and Jirsa, J. O., “Bond Characteristics of High-Strength ASTM A1035 Steel Reinforcing Bars,” ACI Structural Journal, Vol. 106, No. 4, July-Aug. 2009, pp. 530-539. 

Peckover, J., Darwin, D., "Anchorage of High-Strengh Reinforcing Bars with Standard Hooks: Initial Tests," SL Report 13-1 University of Kansas Center for Research, Inc., Lawerence, Kansas, January 2013, 55 pp. KUScholarsWorks

Searle, N., DeRubeis, M., Darwin, D., Matamoros, A., O'Reilly, M., and Feldman, L., "Anchorage of High-Strength Reinforcing Bars with Standard Hooks - Initial Tests," SM Report No. 108, The University of Kansas Center for Research, Inc., Lawrence, KS, February 2014, 120 pp. KUScholarsWorks

Darwin, D., O’Reilly, M., Browning, J., and Xing, L., “Case for Changing Reinforcing Bar Deformation Spacing Requirements,” Journal of Testing and Evaluation, ASTM, Vol. 42, No. 2, Mar. 2014, pp. 368-374. 

Farshadfar, O., Ajaam, A., Hano, M., O'Reilly, M., Darwin, D., "Bond Strength of Reinforcing Bars with Deformation Spacings that Exceed Maximum Specified in ASTM A615," SL Report 14-2, The University of Kansas Center for Research, Inc., Lawrence, KS, August 2014, 26 pp. KUScholarsWorks

Sperry, J., Al-Yasso, A., Searle, N., DeRubeis, M., Darwin, D.,  O'Reilly, M., Matamoros, A., Feldman, L., Lepage, A., Lequesne, R., and Ajaam, A.,  "Anchorage of High-Strength Reinforcing Bars with Standard Hooks," SM Report No. 111, The University of Kansas Center for Research, Inc., Lawrence, KS, June 2015, 266 pp. KUScholarWorks

Sperry, J., Darwin, D., O'Reilly, M., and Lequesne, R., "Anchorage Strength of Conventional and High-Strength Hooked Bars in Concrete," SM Report No. 115, The University of Kansas Center for Research, Inc., Lawrence, KS, December 2015, 281 pp.  KUScholarWorks

Yuan, J., O'Reilly, M., Matamoros, A., and Dawrin, D., "Effect of Preexisting Cracks on Lap Splice Strength of Reinforcing Bars," ACI Structural Journal, Vol. 113, No. 1, July-August 2016, pp. 901-812.  

Shao,Y., Darwin, D., O'Reilly, M., Lequesne, R.D., Ghimire, K., Hano, Muna, "Anchorage of Conventional and High-Strength Headed Reinforcing Bars," SM Report No. 117, The University of Kansas Center for Research, Inc., Lawrence, KS, August 2016, 234 pp. KUScholarWorks

Sperry, J., Yasso, S., Searle, N., DeRubies, M., Darwin, D., O'Reilly, M., Matamoros, A., Feldman, L.R., Lepage, A., Lequesne, R.D., and Ajaam, A., "Conventional and High-Strength Hooked Bars - Part 1: Anchorage Tests," ACI Structural Journal, Vol. 114, No. 1, January-February 2017, pp. 255-342. 

Sperry, J.,  Darwin, D., O'Reilly, M., Lequesne, R.D.,Yasso, S.,  Matamoros, A., Feldman, L.R.,and Lepage, A., "Conventional and High-Strength Hooked Bars - Part 2: Data Analysis," ACI Structural Journal, Vol. 114, No. 1, January-February 2017, pp. 267-314. 

Yasso, S., Darwin, D., and O'Reilly, M., "Anchorage Strength of Standard Hooked Bars in Simulated Exterior Beam-Column Joints," SM Report No. 124, The University of Kansas Center for Research, Inc., Lawrence, KS, April 2017, 330 pp.  KUScholarWorks

Ajaam, A., Darwin, D., and O'Reilly, M., "Anchorage Strength of Reinforcing Bars with Standard Hooks," SM Report No. 125, The University of Kansas Center for Research, Inc., Lawrence, KS, April 2017, 372 pp.  KUScholarWorks

Ghimire, K., Darwin, D., and O’Reilly, M., “Anchorage of Headed Reinforcing Bars in Concrete,” SM Report No. 127, University of Kansas Center for Research, Inc., Lawrence, KS, January 2018, 278 pp. KUScholarWorks

Sperry, J., Darwin, D., O’Reilly, M., Lepage, A., Lequesne, R., Matamoros, A., Feldman, L., Yasso, S., Searle, N., DeRubeis, M., and Ajaam, A., “Conventional and High-Strength Hooked Bars: Detailing Effects,” ACI Structural Journal, Vol. 115, No. 1, Jan.-Feb. 2018, 247-257. 

Ajaam, A., Yasso, S., Darwin, D., O’Reilly, M., and Sperry, J., “Anchorage Strength of Closely-Spaced Hooked Bars,” ACI Structural Journal, Vol. 115, No. 4, July-Aug. 2018, pp. 1143-1152 

Ghimire, K. P., Shao, Y., Darwin, D., and O’Reilly, M., “Conventional and High-Strength Headed Bars – Part 1: Anchorage Tests,” ACI Structural Journal, Vol. 116, No. 4, May 2019, pp. 255-264. 

Ghimire, K. P., Shao, Y., Darwin, D., and O’Reilly, M., “Conventional and High-Strength Headed Bars – Part 2: Data Analysis,” ACI Structural Journal, Vol. 116, No. 4, May 2019, pp. 265-272. 

Hano, M. M., Darwin, D., Misra, A., O’Reilly, M., “Headed Reinforcing Bars: CCT Node Tests, Design Provisions, and Evaluation of a Granular Micromechanics Model for use in Finite Element Analysis of Bond,” SM Report No. 135, University of Kansas Center for Research, Inc., Lawrence, KS, December 2019, 282 pp.  KU ScholarWorks

Blessent, M., Darwin, D., Lepage, A., Lequesne, R. D., and O’Reilly, M., “Anchorage of Large High-Strength Reinforcing Bars with Standard Hooks and Heads: Initial Tests,” SL Report 20-3, University of Kansas Center for Research, Inc., February 2020, Lawrence, KS, 40 pp. Download pdf  KUScholarWorks

Yasso, S., Darwin, D., and O’Reilly, M. O., “Effects of Concrete Tail Cover and Tail Kickout on Anchorage Strength of 90-Degree Hooks,” ACI Structural Journal, Vol. 118, No. 6, Nov. 2021, pp. 227-236 DOI: 10.14359/51732990. Download pdf KU ScholarWorks

Nazzal, L. A., Darwin, D., and O’Reilly, M., “Anchorage of High-Strength Reinforcing Bars in Concrete,” SM Report No. 150, University of Kansas Center for Research, Inc., Lawrence, KS, January 2023, 300 pp. Download pdf KU ScholarWorks

Banaeipour, A., Darwin, D., O’Reilly, M., Lequesne, R. D., Lepage, A., and Blessent, M., “Development of Large High-Strength Reinforcing Bars with Standard Hooks and Heads,” SM Report No. 153, University of Kansas Center for Research, Inc., Lawrence, KS, July 2023, 392 pp. Download pdf.KU ScholarWorks

Darwin, D., O’Reilly, M., Lequesne, R., and Thapa, S., “Bond Behavior of Epoxy-Coated Reinforcing Bars in Non-Proprietary UHPC,” Final Project Report – FHWA-OK-23-04, Oklahoma Department of Transportation, October, 2023, 95 pp., also SM Report No. 156. Download pdf KU ScholarWorks