Boyd Clark, Ph.D.

Boyd Clark, Ph.D.

Director of Materials Lab Services & Senior Principal Materials Scientist
SKOKIE, IL

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Biography

As the Director of Materials Laboratory Services at CTLGroup, Dr. Clark excels in materials science, new product design, and the research and analysis of building materials. He is additionally proficient in the application and use of transmission electron microscopy (TEM), scanning electron microscopy (SEM), optical microscopy, X-ray diffraction (XRD), and X-ray fluorescence (XRF). Dr. Clark is also one of CTLGroup’s lead principal investigators for countless construction litigation cases for various materials-associated and building component failures relating to construction defects. Dr. Clark has evaluated numerous construction defects involving failures of coatings including paint delamination (on metal or concrete), cementitious material finish coats, and elastomeric coatings on exterior building surfaces. Dr. Clark has years of experience with laboratory management and numerous materials science testing methods. Dr. Clark has worked with various governmental agencies including projects associated with the DOT, DOD, DOE, and NRC.

Prior to joining CTLGroup, Dr. Clark worked at a major testing and consulting firm where, among other roles, he served as Director of Construction Materials Services. There, he was involved in research and problem solving analyses for materials including ceramics, metals, minerals, and building products.

Education

Ph.D. Intercollege Materials Program

Pennsylvania State University, 2001

Education

M.S. in Materials Science & Engineering

University of California-Berkeley, 1988

Education

B.S. in Materials Science & Engineering

University of California-Berkeley, 1983

Publications

Feng, X. and Clark, B. 2014. “Portland-Limestone Blended Cement: Effects of Limestone Characteristics”. Portland Cement Association R&D SN3241, Skokie, Illinois, USA 2014, 62 pages.

Clark, B. 2012. “Forensic Materials Analysis: What Analytical Approach is Needed?” Construction Materials Seminar, University of Illinois. February 29.

Feng, X., and Clark, B. 2012. “Correlations between the Laboratory Test Methods for Potential Alkali-Silica Reactivity of Aggregates.” 14th International Conference on Alkali Aggregate Reaction, Austin, Texas. May.

Feng, X., and Clark, B. 2011. “Evaluation of the Physical and Chemical Properties of Fly Ash Products for Use in Portland Cement Concrete.” 2011 World of Coal Ash Conference, Denver, Colorado. May.

Cooke, G. A., L. L. Lockrem, B. A. Clark, and R. Westberg. 2008. Cast Stone Technology for Treatment and Disposal of Iodine Rich Caustic Waste Demonstration – Final Report. CH2M Hill, RPP-RPT-26725, Hanford Group, Richland, Washington.

Henocq, P., E. Samson, J. Marchand, and B. Clark. 2007. “Determination of the Chloride Content Threshold to Initial Steel Corrosion.” 5th International Essen Workshop – TRANSCON 07 – Transport in Concrete: Nano- to Macrostructure, Essen, Germany. June 11-13.

Clark, Boyd A., L. L. Lockrem, G. A. Cooke, M. Avila, R. Westberg, M. R. Silsbee, and R. J. Lee. 2006. “Hanford Site Cement-Based Waste Stream Solidification Studies.” Presented at the Cementitious Materials for Waste Treatment, Disposal, Remediation and Decommissioning Workshop, CH2M Hill, RPP-31811-VA, Savannah River National Laboratory, Aiken, South Carolina. December 12-14.

Atteridge, D., M. Avila, V. Baca, S. Stevens, R. Westberg, K. M. Bishop, G. A. Cooke, L. L. Lockrem, B. Clark, R. J. Lee, and M. Silsbee. 2005. “Development of a Cast Stone Formulation for Hanford Tank Wastes.” Full Paper, Presented at the RemTech 2005 Symposium, CH2M Hill, RPP-RPT-27297-FP, Banff, Alberta. October 19-21.

Avila, M., G. A. Cooke, L. L. Lockrem, G. L. Koci, M. D. Guthrie, K. J. Lueck, B. Clark, R. J. Lee, and M. Silsbee. 2005. “Development of Waste Forms for the Hanford Brines Basin 42 Waste Water & WTP Secondary Wastes & Bulk Vitrification Secondary Waste.” Full Paper, Presented at the RemTech 2005 Symposium, CH2M Hill, RPP-RPT-27298-FP, Banff, Alberta. October 19-21.

Cooke, Gary, L .L. Lockrem, M. Avila, R. Westberg, M. R. Silsbee, B. A. Clark, M. D. Guthrie, G. L. Koci, and K. J. Lueck. 2006. “Cement Solidification of Ammonium Sulfate Rich Basin 42 Waste Water from the Hanford Effluent Treatment Facility.” Presented at the Cementitious Materials for Waste Treatment, Disposal, Remediation and Decommissioning Workshop, CH2M Hill, RPP-31803-VA, Savannah River National Laboratory, Aiken, South Carolina, December 12-14.

Lockrem, L. L., G. Cooke, G. L. Koci, B.A. Clark, T. Rebagay, R. Westberg, S. Stephens, V. Baca, D. Attridge, M. Silsbee, M. Avila, and R. J. Lee. 2005. “Development of a Cast Stone Formulation for Hanford Tank Wastes.” Prepared for the U.S. Department of Energy Secretary for Environmental Management, Contract DE-AC27-99RL14047, RPP-RPT-27297-A, Rev. 0, Presented at Remediation Technologies, Banff, Alberta, Canada. October 2005.

Lockrem, L.L., G. Cooke, G. L. Koci, M. Silsbee, M. Avila, B. A. Clark, and R. J. Lee. 2005. “Development of Waste Forms for the Hanford Brines Basin 42 Waste Water, Waste Treatment Plant Secondary Wastes and Bulk Vitrification Secondary Waste.” Prepared for the U.S. Department of Energy Secretary for Environmental Management, Contract DE-AC27-99RL14047, RPP-RPT-27297-A, Rev. 0, Presented at Remediation Technologies, Banff, Alberta, Canada. October 2005.

Clark, B. A., S. Badger, N. Thaulow, S. Sahu, G. Hobbs, R. J. Lee, J. Marchand, and U. Jakobsen, 2004. “Petrography Analysis of a Building

Foundation Impacted by 9/11.” Presented at and abstract published in the Hal Taylor Cement and Concrete Conference Book, Les Diablerts, Switzerland. June 20-23.

Brown, P. W., B. A. Clark, and R. D. Hooton. 2004. “Microstructural Changes in Concretes with Sulfate Exposure.” Cement and Concrete Composites, 2, No. 8: 993-999. November.

Brown, P. W., B. A. Clark, and R. D. Hooton. 2003. “The Co-Existence of Thaumasite and Ettringite in Concrete Exposed to Magnesium Sulfate at Room Temperature and the Influence of Blast-Furnace Slag Substitution on Sulfate Resistance.” Cement and Concrete Composites, 25, No. 8:939-945. December.

Clark, B. A. 2003. “The Practice and Duties of Forensic Investigators.” Presented at ACI, September 30.

Clark, B. A., and P. W. Brown. 2002. “Phases Formed During Hydration of Tetracalcium Aluminoferrite in 1.0 M Magnesium Sulfate Solutions.” Cement and Concrete Research, 24: 331-338. June/August.

Badger, S. R., B. A. Clark, S. Sahu, N. Thaulow, and R. J. Lee. 2001. “Determination of the Water to Cement Ratio of Hardened Concrete Utilizing Backscattered Electron Imaging.” Presented at the Transportation Research Board Conference, Washington, D.C. January.

Badger, S. R., B. A. Clark, S. Sahu, N. Thaulow, and R. J. Lee. 2001. “Backscattered Electron Imaging to Determine Water-to-Cement Ratio of Hardened Concrete.” Transportation Research Record. Concrete, Materials and Construction, 1775:17-20.

Brown, P. W., and B. A. Clark. 2001. “An Overview of the Roles of Ca(OH)2 in Cementing Systems.” Calcium Hydroxide in Concrete, American Ceramic Society, 73-75.

Clark, B. A., and P. W. Brown. 2000. “The Formation of Calcium Sulfoaluminate Hydrate Compounds from C3A, Gypsum, and NaOH Solutions – Part II.” Cement and Concrete Research, 30:233-240.

Clark, B. A., and P. W. Brown. 2000. “The Formation of Monosulphate From Tetracalcium Aluminoferrite and Magnesium Sulphate.” Advances in Cement Research, 12, No. 2: 71-78. April.

Clark, B. A., and P. W. Brown. 2000. “The Formation of Ettringite from Tricalcium Aluminate and Magnesium Sulphate.” Advances in Cement Research, 12, No. 4: 137-142. October.

Clark, B. A., and P. W. Brown. 1999. “The Formation of Calcium Sulfoaluminate Hydrate Compounds from C3A, Gypsum, and NaOH Solutions – Part I.” Cement and Concrete Research, 29:1943-1948.

Clark, B. A., and P. W. Brown. 1999. “Formation of Ettringite From Monosubstituted Calcium Aluminosulfate Hydrate and Gypsum.” Journal of the American Ceramic Society, 82, No. 10:2900-2905.

Clark, B. A., and P. W. Brown. 1999. “Phases Formed From Hydration of Tetracalcium Aluminoferrite and Magnesium Sulfate.” Advances in Cement Research, 11, No. 3:133-137.

Sahu, S., B. A. Clark, and R. J. Lee. 1998. “Delayed Ettringite Formation and the Mode of Concrete Failure.” Materials Science of Concrete – The Sidney Diamond Symposium, 379-394.

Ten Huisen, K S., B. A. Clark, M. Klimkiewicz, and P. W. Brown. 1997. “A Microstructural Investigation of Calcium-Deficient and Stoichiometric Hydroxyapatite Synthesized from CaHPO4*2H2O and Ca4(PO4)2O.” Cells and Materials, 6 (1-3): 251-267.

Thaulow, N., U. H. Jakobsen, and B. A. Clark. 1996. “Composition of Alkali Silica Gel and Ettringite in Concrete Railroad Ties: SEM, EDX and X-Ray Diffraction Analyses.” Cement and Concrete Research, 26, No. 2:309-318.

Clark, B. A., P. W. Brown, A. J. Schwoeble, Y. Jie, and R. J. Lee. 1995. “Comparison of Ettringite Morphologies Observed on Fracture Surfaces and in Thin Sections.” Presented at The American Ceramic Society 97th Annual Meeting, Cincinnati, Ohio.

Clark, B. A., and R. J. Lee. 1993. “Energy Dispersive X-Ray Analysis of Cement Paste Features Resulting From Heat Treatment.” Presented at the American Ceramic Society 95th Annual Meeting and Exposition, Cincinnati, OFI.

Skalny, J. P., B. A. Clark, and R .J. Lee. 1993. “Alkali-Silica Revised.” Presented at the 15th International Conference on Cement Microscopy, Dallas, Texas.

Jie, Y., D. A. Warner, B. A. Clark, N. Thaulow, and J. P. Skalny. 1993. “Temperature Relics in Steam Cured Concrete.” Presented at the 15th International Conference on Cement Microscopy, Dallas, Texas.

Clark, Boyd A. 1993. “A Comparison of SEM and TEM Analyses of Mortars Cured at Various Temperatures.” Materials Science Candidacy Paper.

Clark, B. A., A. M. Dailey, Y. Jie, J. P. Skalny, and R. J. Lee. 1993. “TEM and EDS Analysis of Cement Paste in Concrete and Experimental Mortars.” Poster Session American Ceramic Society PAC RIM Meeting, Honolulu, Hawaii.

Skalny, J. P., B. A. Clark, and R. J. Lee. 1992. “Alkali-Silica Reaction Revisited.” Proceedings of the 14th International Conference on Cement Microscopy, 309-324.

Clark, B. A., E. A. Draper, R. J. Lee, J. P. Skalny, M. Ben-Bassat, and A. Bentur. 1992. “Electron-Optical Evaluation of Concrete Cured at Elevated Temperatures.” Proceedings of the American Concrete Institute Symposium on How to Produce Durable Concrete in Hot Climates, San Juan, Puerto Rico.

Clark, B. A., A. J. Schwoeble, R. J. Lee, and J. P. Skalny. 1992. “Detection of ASR in Opened Fractures of Damaged Concrete.” Cement and Concrete Research, 22:1170-1178. November.

Liu, J. B., B. A. Clark, and R. M. Fisher. 1990. “Applications of Scanning Tunneling Microscopy in the Materials Characterization Laboratory.” Proceedings of the XIIth International Congress for Electron Microscopy.

Hoyt, J. J., B. A. Clark, and D. de Fontaine. 1989. “A Synchrotron Radiation Study of Phase Separation in Al-Zn Alloys – I. Kinetics.” Acta Metallurgica, 37, No. 6: 1597-1609.

Clark, B A. 1988. “Unmixing Kinetics in Al-Zn Alloys.” Thesis, University of California, Berkeley, California.

Clark, B. A., D. de Fontaine, and J. J. Hoyt. 1987. “Unmixing Kinetics in Al-Zn Alloys.” Presented at the Flume-Rothery Memorial Symposium (in conjunction with the 1987 AIME Meeting), Denver, Colorado.

Hoyt, J. J., M. Sluiter, B. A. Clark, M. Kraitchman, and D. de Fontaine. 1987. “Anomalous X-Ray Scattering Study of Early-Stage Precipitation in Al-Zn-Ag.” Acta Metallurgica, 35, No. 9:2315-2322.

Clark, B. A, J. P. Simon, J. J. Hoyt, R. Pro, O. Lyon, and D. de Fontaine. 1986. “Unmixing Kinetics in Al-Zn Alloys.” Presented at The Metallurgical Society Annual Meeting, New Orleans, Louisiana.

Hoyt, J. J., O. Lyon, J. P. Simon, B. A. Clark, B. Davis, and D. de Fontaine. 1986. “The Determination of Partial Structure Functions in Al- Zn-Ag Alloys.” Solid State Communications, 57, No. 3:155-158.

Lyon, O., J. J. Hoyt, R. Pro, B. Davis, B. A. Clark, D. de Fontaine, and J. P. Simon. 1985. “Anomalous Small-Angle X-Ray Scattering on Al-Zn and Al-Zn-Ag Alloys.” Journal Applied Crystallography, 18:480-486.

Affiliations
  • American Concrete Institute
  • ASTM International

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