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This collection contains technical reports and publications of the Infrastructure Research Institute.

Recent Submissions

  • Headed and High-Strength Shear Reinforcement in Concrete Members 

    Al-Sabawy, Abdalkader; Lequesne, Rémy D.; O’Reilly, Matthew; Darwin, David; Lepage, Andrés (University of Kansas Center for Research, Inc., 2020-05)
    Results are reported from 29 large-scale tests of reinforced concrete beams designed to investigate the use of Grade 80 (550) steel and headed deformed bars as shear reinforcement, both of which are expected to alleviate ...
  • Diagonally-Reinforced Concrete Coupling Beams with High-Strength Steel Bars 

    Ameen, Shahedreen; Lequesne, Rémy D.; Lepage, Andrés (University of Kansas Center for Research, Inc., 2020-05)
    The use of high-strength steel in diagonally reinforced coupling beams was investigated with the aims of minimizing reinforcement congestion and increasing the maximum permissible design shear stress without compromising ...
  • Corrosion Resistance of Stainless Steel Clad Reinforced Bars 

    O’Reilly, Matthew; Darwin, David; Vosough Grayli, Pooya; Farshadfar, Omid (University of Kansas Center for Research, Inc., 2019-09)
    The corrosion resistance of No. 6 Type 316 stainless steel clad bars produced by Commercial Metals Company (CMC) was evaluated using the rapid macrocell and cracked beam tests (15 and 96 weeks, respectively), as described ...
  • Topology Optimized Reinforced Concrete Walls Constructed with 3D Printed Formwork 

    Mudaliar, Triveni; Lequesne, Rémy D.; Fadden, Matthew (University of Kansas Center for Research, Inc., 2020-01)
    The construction industry continually evolves to adapt to gains in knowledge, market pressures and new technologies. However, two promising new technologies, 3D printing and computational topology optimization, have not ...
  • Implementation of Crack-Reducing Technologies for Concrete in Bridge Decks: Synthetic Fibers, Internal Curing, and Shrinkage-Reducing Admixtures 

    Feng, Muzai; Darwin, David (University of Kansas Center for Research, 2020-01)
    Technologies to reduce cracking in bridge decks, including shrinkage-reducing admixtures (SRAs), shrinkage-compensating admixtures (SCAs), fiber reinforcement, and internal curing (IC), are evaluated based on laboratory ...
  • Headed Reinforcing Bars: CCT Node Tests, Design Provisions, and Evaluation of a Granular Micromechanics Model for Use in Finite Element Analysis of Bond 

    Hano, Muna M.; Darwin, David; Misra, Anil; O’Reilly, Matthew (University of Kansas Center for Research, Inc., 2019-12)
    The anchorage behavior of headed bars at the end of beams within compression- compression-tension (CCT) nodes subjected to monotonic loading is assessed. The test parameters for the 10 specimens tested include the embedment ...
  • Behavior of Biaxially Loaded Slab-Column Connections with Shear Studs 

    Matzke, Eric M; Lequesne, Rémy D.; Parra-Montesinos, Gustavo J.; Shield, Carol K. (American Concrete Institute, 2015-06)
    Results are presented from four non-prestressed concrete slabcolumn connection subassemblies tested under simulated gravity and earthquake-type loading. Each specimen consisted of a largescale first-story interior slab-column ...
  • Corrosion Performance of Epoxy-Coated MMFX Bars 

    Farshadfar, Omid; O’Reilly, Matthew; Darwin, David (University of Kansas Center for Research, Inc., 2018-10)
    The corrosion resistance of coated ASTM A1035 Type CL (2% Cr) and CM (4% Cr) steel bars produced by MMFX Technologies were evaluated in both cracked and uncracked concrete as well as in the rapid macrocell test. Coated ...
  • Internal Curing and Supplementary Cementitious Materials in Bridge Decks 

    Lafikes, James; Khajehdehi, Rouzbeh; Feng, Muzai; O’Reilly, Matthew; Darwin, David (American Concrete Institute, 2017-10)
    Supplementary cementitious materials (SCMs) in conjunction with pre-wetted fine lightweight aggregate to provide internal curing are being increasingly used to produce high-performance, low-shrinking concrete to ...
  • Low-Cracking High-Performance Concrete (LC-HPC) for Durable Bridge Decks 

    Darwin, David; Khajehdehi, Rouzbeh; Feng, Muzai; Lafikes, James; Ibrahim, Eman; O’Reilly, Matthew (American Concrete Institute, 2017-10)
    The goal of this study was to implement cost-effective techniques for improving bridge deck service life through the reduction of cracking. Work was performed both in the laboratory and in the field, resulting ...
  • Corrosion-Induced Concrete Cracking for Uncoated and Galvanized Reinforcing Bars 

    O'Reilly, Matthew; Farshadfar, Omid; Darwin, David; Browning, JoAnn; Locke, Carl E., jr. (American Concrete Institute, 2018-11)
    Corrosion-related cracking in reinforced concrete is caused by expansive corrosion products and the resulting tensile stresses. While the amount of corrosion to cause cracking has been studied for uncoated conventional ...
  • Effect of Crack-Reducing Technologies and Supplementary Cementitious Materials on Settlement Cracking of Plastic Concrete and Durability Performance of Hardened Concrete 

    Ibrahim, Eman; Darwin, David; O'Reilly, Matthew (University of Kansas Center for Research, Inc., 2019-09)
    The effects of crack-reducing technologies and supplementary cementitious materials on plastic settlement cracking and the durability of concrete subjected to freezing and thawing were evaluated. The study of settlement ...
  • Effects of Internal Curing, Slag, and Silica Fume on Concrete Shrinkage 

    Pendergrass, Benjamin; Darwin, David; Khajehdehi, Rouzbeh; Feng, Muzai (American Concrete Institute, 2018-07)
    The shrinkage of mixtures containing replacements of total aggregate with prewetted lightweight aggregate (LWA) (0, 8, and 10% by volume) and replacements of cement with Grade 100 slag cement (0 and 30% by volume) and ...
  • Corrosion-Induced Concrete Cracking for Uncoated and Galvanized Reinforcing Bars 

    Darwin, David; O'Reilly, Matthew; Farshadfar, Omid; Browning, JoAnn; Locke, Carl, Jr. (American Concrete Institute, 2018-11)
    Corrosion-related cracking in reinforced concrete is caused by expansive corrosion products and the resulting tensile stresses. While the amount of corrosion to cause cracking has been studied for uncoated conventional ...
  • Effect of Supplementary Cementitious Materials on Chloride Threshold and Corrosion Rate of Reinforcement 

    O'Reilly, Matthew; Farshadfar, Omid; Darwin, David (American Concrete Institute, 2019-01-01)
    Supplementary cementitious materials (SCMs) are commonly used as a means of reducing cost, reducing environmental impact, or reducing permeability of concrete, but the current field of research has found mixed results ...
  • Construction Of Low-Cracking High-Performance Bridge Decks Incorporating New Technology 

    Lafikes, James; Darwin, David; O'Reilly, Matthew; Feng, Muzai; Bahadori, Alireza; Khajehdehi, Rouzbeh (University of Kansas Center for Research, Inc., 2019-06-01)
    Construction and early-age crack evaluations of four bridge decks in Minnesota placed from 2016 to 2018 that incorporate specifications for Internally-Cured Low-Cracking High-Performance Concrete (IC-LC-HPC) are documented ...
  • Development of a Precision Statement for ASTM A1061 

    Lequesne, Rémy D.; Collins, William N.; Lucon, Enrico; Poudel, Ashwin; Darwin, David (University of Kansas Center for Research, Inc., 2019-05)
    An interlaboratory study involving 19 laboratories was conducted to quantify the precision of ASTM A1061-16, Standard Test Methods for Testing Multi-wire Steel Prestressing Strand. This standard includes methods for measuring ...
  • Synthesis of Rating Methodologies for Concrete Bridges without Plans 

    Lequesne, Rémy D.; Collins, William N. (University of Kansas Center for Research, Inc., 2019-05)
    In response to Federal Highway Administration requirements, many states are confronted with assigning load ratings to large numbers of concrete bridges that do not have plans. The AASHTO Manual for Bridge Evaluation does ...
  • Conventional and High-Strength Headed Bars—Part 2: Data Analysis 

    Ghimire, Krishna P.; Shao, Yun; Darwin, David; O'Reilly, Matthew (American Concrete Institute, 2019-05)
    Equations to characterize the anchorage strength of headed bars were developed, incorporating key factors affecting anchorage strength: concrete compressive strength; embedment length; bar diameter; spacing between the ...
  • Conventional and High-Strength Headed Bars—Part 1: Anchorage Tests 

    Ghimire, Krishna P.; Shao, Yun; Darwin, David; O'Reilly, Matthew (American Concrete Institute, 2019-05)
    Results of an experimental program on the anchorage strength of headed reinforcing bars are presented. Two hundred and two exterior beam-column joint specimens with concrete compressive strengths ranging from 3960 to 16,030 ...

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