MJ2 Consulting

Concrete Materials Consulting

Mass Concrete Thermal Plans

Service Life Modeling

Condition Assessment

Construction Troubleshooting

About Us

Construction Materials Engineering and Problem Solving

Concrete placement

MJ2 Consulting, PLLC

John Gajda, Matthew D’Ambrosia, and Jonathan Poole formed MJ2 Consulting, PLLC in 2017 to focus on solving complex problems for clients in the concrete industry.  Mr. Gajda, Dr. D’Ambrosia, and Dr. Poole have extensive expertise in mass concrete planning and analysis, construction troubleshooting, durability and service-life assessment, specialized concrete mixture development, and product development research.


Mr. Gajda, FACI is Chair of ACI 301-H and past Chair of ACI 207.  He received his B.S. in Ceramic Engineering and M.S. in Material Science Engineering from Iowa State University, and was named as “our country’s mass concrete expert” by Concrete Construction magazine in 2008.

Dr. D’Ambrosia is chair of ACI 209-C, past chair of ACI 07, and also serves as an Adjunct Professor at Northwestern University.  Dr. D’Ambrosia received his B.S. in Civil Engineering from the University of Iowa and his M.S. and Ph.D. in Civil Engineering from the University of Illinois at Urbana-Champaign.

Dr. Poole received a B.S., M.S., and Ph.D. in Civil Engineering from the University of Texas at Austin.  Dr. Poole served as president of SEAoT Austin Chapter, and was Co-recipient of the Wason Medal for Materials Research in 2011.

Our Services

  • Construction Troubleshooting
  • Mass Concrete Assistance
  • Thermal Control Planning
  • Concrete Mixture Optimization
  • Forensic Investigation
  • New Product Development
  • Materials Research
  • Durability and Service-Life Assessment
  • Specialized Concrete Mixture Development

Our Clients

  • Contractors
  • Material Suppliers
  • Design Engineers
  • Owners/Developers
  • Government Agencies
  • Laboratories


Sign up to hear from us!

John Gajda

John@MJ2consulting.com, (847) 922-1886

Illinois Address

2549 Waukegan Rd, Suite 37, Bannockburn, IL 60015

Jonathan Poole

jp@MJ2consulting.com, (817) 726-8651

Texas Address

PO Box 626, Cedar Park, TX 78630

Matthew D'Ambrosia

matt@MJ2consulting.com, (630) 240-4118

Illinois Address

2549 Waukegan Rd, Suite 37 Bannockburn, IL 60015