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In-situ Pull-off Tests
Length: 49 Minutes


This session will describe the use of tensile pull-off (bond) testing for concrete repairs and bonded overlays. It will provide guidance on applications of the test, industry standards and guidelines, acceptance criteria, proper testing procedures, appropriate equipment, and interpretation and reporting of test results. Bond is important because it relates to structural requirements (e.g. for strengthening and structural repairs) and for durability requirements (e.g. for overlays and cosmetic repairs). Testing of bond is needed to verify that the specified bond requirements have been met and a satisfactory result has been obtained.

Learning Objectives

  1. Learn where and why tensile pull-off (bond) testing should be performed
  2. Recognize industry standards and guidelines for tensile pull-off (bond) testing
  3. Understand the importance of developing acceptance criteria prior to repairs 
  4. Develop an understanding of proper in-situ pull-off (bond) testing procedures and equipment
  5. Learn guidelines for interpretation and reporting of test results

Mr. Matthew Sherman, Senior Principal, Simpson Gumpertz & Heger, Inc.


Matthew Sherman, PE, is a Senior Principal with Simpson Gumpertz & Heger (SGH), Inc. of Waltham, Massachusetts and is a registered Professional Engineer in multiple states and a Fellow of the American Concrete Institute and the International Concrete Repair Institute. He received a B.S. in Civil Engineering from Cornell University in 1991 and a M.S. in Civil Engineering (Structural) from The University of Texas at Austin in 1993.  

Matt has over 25 years of experience in consulting and heavy construction throughout the United States. His specialties include concrete materials, thermal and durability simulation, non-destructive testing, corrosion mitigation, and concrete repair. At SGH, he has led projects such as restoring The University of Notre Dame Stadium, overlay repairs nationwide, and investigating aggregate problems in Connecticut, New Hampshire, Kentucky, and Massachusetts. 

Matt is an active committee member of the International Concrete Repair Institute (ICRI) and American Concrete Institute (ACI), and a member of the American Welding Society (AWS) and The Concrete Society. He is a National Ready Mixed Concrete Association (NRMCA) Certified Concrete Technologist - Level 2,3, and 4 and an ACI Concrete Field Technician – Grade 1.


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