A Look at CTLGroup

CTLGroup 100th Anniversary Logo
2016
Celebrating 100 Years
CTLGroup's legacy began in 1916 as the R&D labs of its parent organization, the Portland Cement Association (PCA). We're proud to be celebrating this important milestone with PCA all throughout 2016.
JPL Spain
2015
Jet Propulusion Laboratory Deep Space Antenna
CTLGroup performed a comprehensive field investigation and installed a structural health monitoring system for the Deep Space Network 34-Meter Antenna, DSS-54, located at the Madrid Deep Space Communications Complex near Madrid, Spain.
Wilshire Grand
2014
Wilshire Grand Tower Foundation
Dubbed "The Grand Pour" the Wilshire Grand Tower was the site of the world’s largest continuous concrete placement. CTLGroup's John Gajda, PE, engineered a cooling pipe system that internally cooled the foundation.
WIU Thompson Hall
2013
Thompson Hall Facade Restoration
CTLGroup provided architectural and engineering services for the facade restoration program at Western Illinois University's Thompson Hall in Macomb, IL.
I-35W Investigation and Expert Report
2011
I-35W Investigation and Expert Report
CTLGroup completed its role providing expert opinion as to the cause of the collapse of the I-35W Mississippi River Bridge in Minneapolis, MN.
Burj Khalifa
2010
Burj Khalifa
Using its world-class laboratory, CTLGroup conducted creep and shrinkage testing for the structural analysis of the building. Additional consulting services included construction materials optimization, construction methods consulting and construction process review, and specialized concrete mixture development.
Standard Reference Material Contributions
2009
Standard Reference Material Contributions
CTLGroup completes its most recent set of Standard Reference Materials (SRMs) for the National Institute of Standards and Technology (NIST, formerly the U.S. National Bureau of Standards). For 40 years, CTLGroup has been involved with the selection, packaging and certifying of SRMs used throughout world, including some of the biggest selling at NIST.
Big Dig Tunnel Collapse
2007
Big Dig Tunnel Collapse
CTLGroup is involved in analysis and determination of cause of collapse in ceiling in Boston, MA.
Unity Temple Restoration
2003
Unity Temple Restoration
CTLGroup completes award-winning design-build concrete restoration project for Frank Lloyd Wright landmark in Oak Park, IL.
World Trade Center Collapse
2001
World Trade Center Collapse
Senior Vice President Dr. W. Gene Corley oversees the initial report to FEMA and testifies in front of Congressional Committee. His team finds that lack of fire-proofing of the building led to much of the severity of the destruction. Recommendations on structural fireproofing arising from Corley's report are gradually implemented throughout the industry.
Safeco Field
2000
Safeco Field
CTLGroup performed a long term performance monitoring of the retractable roof viscous-damper system movement at Safeco Field in Seattle, WA.
Branch Davidian Trial
1999
Branch Davidian Trial
Senior Vice President Dr. W. Gene Corley worked with the U.S. Justice Dept. to counter claims by the Branch Davidians that the FBI used unreasonable force and trapped people in the building during the Waco, TX showdown. Corley's team's investigation of the building proved that this was false.
Nondestructive Testing (NDT)
1997
Nondestructive Testing (NDT)
CTLGroup leads the industry with services that include almost all aspects and methods of concrete NDT. We began in 1997, when NDT expert Allen Davis led the development and promotion of the Impulse Response (IR) technique. Today, CTLGroup offers full services in concrete NDT, and remains at the forefront utilizing the latest technologies.
Vietnam Veterans Memorial
1996
Vietnam Veterans Memorial
The Washington, D.C. National Park Service requested CTLGroup to investigate and determine the causes of granite panel cracking.
Oklahoma city bombing
1995
Oklahoma City Bombing
Senior Vice President Dr. W. Gene Corley headed the Federal Emergency Management Agency (FEMA) investigation of the bombing and structural response which caused the collapse of the Murrah Federal Building.
Chicago Public Library
1992
Chicago Public Library
The goal of CTL Group's first project in sustainability is to determine the embodied energy of concrete and steel. This project takes place before ISO standards for life cycle inventory (LCI) and life cycle assessment (LCA) are established. CTLGroup joins USGBC in 2000 as one of its first members and gains two LEED Accredited Professionals by 2002.
Lincoln Jefferson Memorial
1990
Lincoln Memorial and Jefferson Memorial
CTLGroup performs evaluation of deterioration in monument structures in Washington, D.C.
Branching Out
1987
Branching Out
CTLGroup, which began as the research and development arm of the Portland Cement Association (PCA), starts serving outside clients as an independent PCA subsidiary. The firm expands its scope of service beyond concrete and modifies a structures lab to incorporate the testing of steel structures.
Lunar Soild
1985
Lunar Soil
CTLGroup gains national attention when NASA provides one of the largest samples of lunar soil it has allocated for investigative research. Test results verify that lunar material is an excellent aggregate for making concrete.
Reducing Concrete’s Carbon Footprint
1970
Reducing Concrete’s Carbon Footprint
CTLGroup begins the first of decades of research and project work on using fly ash and other supplementary cementitious materials in concrete. This work is now gaining even more momentum due to its potential for reducing the carbon footprint of concrete.

Our Unique Foundation and Promising Future

CTLGroup originated a century ago as the cement and concrete technology Research and Development Laboratories of Portland Cement Association (PCA) in 1916. How have we changed? In some ways, we haven’t.  We are still thought leaders and problem solvers. We are still engineers, architects, scientists, and consultants. As the world around us has changed, we have evolved with it to continue to meet the needs of our clients.

In the 1960s, present-day CTLGroup began providing consulting services for applied research projects, continuing to expand its engineering consulting services through the 1980s. In 1987, CTLGroup was incorporated as Construction Technology Laboratories, Inc., a wholly-owned subsidiary of PCA, and in 2005 began doing business as CTLGroup.

CTLGroup is an internationally recognized expert consulting engineering and materials science firm, providing engineering, architecture, and scientific testing to our clients across the globe. Our engineering expertise is complemented by one of the largest and most comprehensive private materials and structural testing laboratories in the world. The CTLGroup experts can address problems from the materials and structural perspectives to deliver an integrated solution.

Our accumulated knowledge from our unique beginning has allowed us to offer new areas of practice and specialization which we have been able to pass on to our clients in the form of added services, technical expertise, and expanded practice areas.