Ara A. Jeknavorian, Ph.D.
Jeknavorian Consulting Services

Peer Reviewed Papers

Tregger, N., Jeknavorian, A., Loose, D., and Durning, T, Introducing a New Sensor for In-Mixer Air Volume Measurement, Proceedings of 2013 PCI Convention.

Jeknavorian, Ara A.; Press, Philip J., Modification of Compressive Strength Requirements for the ASTM C494 Standard on Chemical Admixtures, SP-288, Tenth International Conference on Superplasticizers and Other Chemical Admixtures, 2012, 177-191.

Jeknavorian, A.; Barry, E. F. Pyrolysis-gas chromatography/mass spectrometric methods for the determination of chemical additives in Portland cement and concrete. SP-288, Tenth International Conference on Superplasticizers and Other Chemical Admixtures, 2012, 157-175.

Cheung, J., Jeknavorian, A., Roberts, L., and Silva, D., Impact of admixtures on the hydration kinetics of portland cement, Cement and Concrete Research (2011), 41(12), 1289-1309.

Koehler, E., Jeknavorian, A., Offenberg, M., and Malone, J.; Chemical admixture system for pervious concrete, American Concrete Institute, SP-262, Ninth ACI International Conference on Superplasticizers and Other Chemical Admixtures, 2009, 273-285.

Gupta, V., Cheung, J., Chun, B-w, Koyata, H. and Jeknavorian, A., Influence of Cement Chemistry on the Performance of Polycarboxylate-based Superplasticizers, Eighth International Conference on Superplasticizers and Other Chemical Admixtures, Sorrento 2006.

Jeknavorian, A. A., Koehler, E., Abelleira, A., Geary, and D.; Cook, R. Multifunctional chemical admixture to reduce quality control requirements of self-consolidated concrete, American Concrete Institute, SP (2009), SP-262(Ninth ACI International Conference on Superplasticizers and Other Chemical Admixtures, 2009), 35-46.

Jeknavorian, A. Air-entraining Admixtures, ASTM Special Technical Publication, STP 169D Significance of Tests and Properties of Concrete and Concrete-Making Materials, (2006), 474-483.

Cornman, C., Jeknavorian, A. ,and Koyata, H.; Getting it right: successful SCC production practices,
American Concrete Institute, SP-233, Workability of SCC: Roles of Its Constituents and Measurement Techniques, ACI Spring Convention, 2005.

Chun, B.-W, Jeknavorian, A., Dair, B; Macuch, P. J., Wiebe, D.; and Porteneuve, C. The development of cement and concrete additive: based on xylonic acid derived via bioconversion of xylose, Applied Biochemistry and Biotechnology (2006), 129-132, 645-658.

Jeknavorian, A., Hazrati, K., Bentur, A., Koyata, H., McGuire, D., and Sandberg, P., Use of chemical admixtures to modify the rheological behavior of cementitious systems containing manufactured aggregates, American Concrete Institute, SP-239, Eighth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, 2006, 15-29.

Porteneuve, C.; Scrivener, K. L.; Jeknavorian, A.; Gal, G.; Gallucci, E.; and Serafin, F., Effect of chemical admixtures on the microstructural development of Portland cement mortars and concretes, RILEM Proceedings (2004), PRO 48(Advances in Concrete through Science and Engineering).

Jeknavorian, A.; Berke, N.; Connolly, J.; and Prescott, J., Synergistic Interaction of Condensed Polyacrylic Acid-Aminated Polyether Superplasticizer with Calcium Salts, SP-195: The Sixth Canmet/ACI Conference on Superplasticizers and Other Chemical Admixtures in Concrete, SP 195, 2000, 585-600.

Jeknavorian, A.; Mabud, M.A., Barry, E.F., and Litzau, J. Novel pyrolysis-gas chromatography/mass spectrometric techniques for the characterization of chemical additives in portland cement and concrete Journal of Analytical and Applied Pyrolysis, Volume 46, Issue 2, August 1998, 85–100.

Jeknavorian, A., Barry, E.F., and Serafin, F., Determination of grinding aids in portland cement by pyrolysis gas chromatography-mass spectrometry, Cement and Concrete Research, Volume 28, Issue 9, September 1998, 1335–1345.

Jeknavorian, A., Chin, D., and Saidha, L., Determination of a nitrite-based corrosion inhibitor in plastic and hardened concrete, ASTM Cement, Concrete and Aggregates, Vol. 17, Issue No.1, 1995, 48-54.

Jeknavorian, A., Jardine, L., Ou, C., Koyata, H., and Folliard, K., Interaction of Superplasticizers with Clay-Bearing Aggregates, Seventh CANMET/ACI International Conference Superplasticizers and Other Chemical Admixtures in Concrete, Berlin, ACI SP 173-04, 1997, 55-82.

Jeknavorian, A., Roberts, L.R., Jardine, L., Koyata, H., and Darwin, D., Condensed Polyacrylic Acid-Aminated Polyether Polymers as Superplasticizers for Concrete, Fifth CANMET/ACI Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Venice 1997.

Jeknavorian, A. and Barry, E., Determination of durability-enhancing admixtures in concrete by thermal desorption and pyrolysis gas chromatography-mass spectrometry, Cement and Concrete Research, Volume 29, Issue 6, June 1999, 899–907.

Jeknavorian, A., Berke, N., and Shen, D., Performance Evaluation of Set Accelerators For Concrete, 4th ACI CANMET/ACI Conference on Superplasticizers and Other Chemical Admixtures in Concrete, SP 140-22, 1994, 385-406.

Jeknavorian, A. and Hayden, T., Troubleshooting retarded concrete: Understanding the role of cement and admixtures through an interdisciplinary approach. Cement, Concrete and Aggregates, Vol. 13, Issue 2, 1991, 103-108.

Kerkar, A., Jeknavorian, A., Darwin, D., Lambert, J. Chemical Admixtures, Cement Progress Research, 1995.

Cheung, J., Jeknavorian, A., Darwin, D., Lambert, J.,Chemical Admixtures, Cement Progress Research, 1999.

Darwin, D., Jeknavorian, A., and Koyata, H., Chemical Admixtures, Cement Progress Research, 1993.

Shi, C., Berke, N., Jeknavorian, A., and Zhong, H., Roles of Chemical Admixtures in Sustainable Concrete Materials and Structures, Proceedings of the 6th International Symposium on Cement and Concrete, Xi'an, China, 2006.

Zhang, S., Hughes, D., Jeknavorian, A., Nishimura, T., and Yang, K., Self-compacting concrete, worldwide experience, 2nd Int. Symposium on Design, Performance and Use of Self Consolidating Concrete, Editor(s): C. Shi, Z.Yu, K.H. Khayat and P. Yan, 2009, 831-840.

Other Publications

Jeknavorian, A., Effect of Set Retarding and Accelerating Admixtures on Concrete Rheology, ACI 236 Chapter on Rheology, 2005.

Jeknavorian, A., Determination of Chemical Admixtures in Hardened Concrete, Concrete society Technical Report 32, Chapter 5: Analysis of Hardened Concrete: A Guide to tests, procedures, and interpretation of results. Slough, England. 2011.

Koehler, E., Jeknavorian, A., Geary, D., and Malone, J., Comparison of Segregation tests for self-compacting concrete, ASTM Symposium on New Developments in Test Methods for Self-Consolidating Concrete, Co-Chairs: A. Jeknavorian and J. Schemmel, June 2008.

Shi, C, McGuire, D., and Jeknavorian, A., Laboratory Development of Self-consolidated Concrete With Extended Slump Flow Retention, Paper 74-SCC, 5th International RILEM Symposium on Self-Compacting Concrete, Ghent, Belgium, September 2007.

Korhonen, C. and Jeknavorian, A., Breaking the Freeze Barrier: A New ASTM Standard, Concrete International, November 2005, Vol. 27 Issue 11, 38.

Jeknavorian, A., Hartman, C., and Bennini, H., Chemical Admixtures for Concrete, Mortar, and Cement, Chapter 10, Concrete Science and Technology, Brazilian Concrete Institute (Ibracon), 2011.

Jeknavorian, A., Chemical Admixtures of the Future: Opportunities and Challenges to Extend the Performance of Concrete, THE INSTITUTE OF CONCRETE TECHNOLOGY, Annual Technical Symposium, Research & Development in Concrete Technology: An International Update, April 2008.

Jeknavorian, A., Chemical admixtures of the future: Opportunities and challenges to extend the performance of concrete, Progress in Concrete Conference, ACI Quebec & E. Ontario November 2005.

Jeknavorian, A., Use of polycarboxylate-based high range water reducers in commercial concrete, European Ready Mixed Concrete Organization Conference, Portugal. 1994. ( Recent Progress in the Development of Chemical Admixtures” Advances in Concrete Technology, 2nd Ed. pp 785-838, 1994 (Editor: V. M. Malhotra).

Jeknavorian, A., Barrett,P; Watterson, A.C.; and Barry, E.F., Thermodynamic study of a liquid crystal as a liquid phase in gas—liquid chromatography II. A cholesteric liquid crystal. Journal of Chromatography A Volume 107, Issue 2, 16 April 1975, 317–325.

Jeknavorian, A. and Barry, E., A thermodynamic study of a liquid crystal as a liquid phase in gas-liquid chromatography: I. A nematic liquid crystal, Journal of Chromatography, Volume 101, Issue 2, 18 December 1974, 299–306.

Korhonen, C. J. ; Cortez, E. R. ; Durning, T.A. ; Jeknavorian, A. A., Antifreeze Admixtures for Concrete, U.S. Army Corp. of Engineers, Cold Regions Research and Engineering Lab, Special Report 97-26, October 1997.

Jeknavorian, A., Zhou, P., and Forgey, C., Optimizing Admixture Selection for High Level Use of Supplementary Cementitious Materials in Concrete, NRMCA Concrete Technology Forum/Focus on Sustainable Development, Denver, May 2008.

Jeknavorian, A., Chemical Admixtures of Future: Extending Performance of Concrete http://www.aceupdatemagazine.com/Article.

Jeknavorian, A.A., Koehler, E.P., Geary, D., and Malone, J., Concrete Rheology with High-Range Water Reducers With Extended Slump Flow Retention, Proceedings of SCC 2008, Chicago, IL, November 2008.

Jeknavorian, A. and Koehler, E., Use of Chemical Admixtures to Modify the Rheological Behavior of Cementitious Systems Containing Manufactured Aggregates, 2010 NRMCA Concrete Sustainability Conference.

Koehler, E., Jeknavorian, A., and Klaus, S., Selecting Admixtures to Achieve Application-Required Rheology, Design, Production and Placement of Self-Consolidating Concrete, RILEM Bookseries Volume 1, 2010, 79-88.