People
Xiuping Feng, Ph.D.
Mortar Lab Manager
Focus
- Materials Science + Engineering
Biography
Dr. Feng brings extensive expertise in cement and concrete materials science to her role as Mortar Lab Manager at CTLGroup. Having previously served as a Project Manager and Senior Scientist at CTLGroup for 15 years, she played a key role in material characterization, compliance testing, and failure investigations. Her industry experience includes overseeing lab operations, optimizing mortar and concrete mix designs, and ensuring adherence to AASHTO and ASTM accreditation standards. With a strong background in research, quality control, and technical problem-solving, Xiuping is committed to maintaining the highest standards in testing and advancing CTLGroup’s capabilities in material evaluation.
Education
University of New Brunswick, Fredericton, Canada, Ph.D. Civil Engineering, 2007
Nanjing Technology University, Ph.D. Materials Science and Engineering, 1995
Affiliations
American Concrete Institute (ACI)
American Ceramic Society
American Society for Testing and Materials
Featured Publications
Cement manufacture and hydration process
D.P. Bentz and X. Feng, “Analysis of CCRL Proficiency Cements 135 and 136 using Cemhyd3d”, NISTIR6545, 2000, National Institute of Standards and Technology
K. Snyder, X. Feng, B. Keen, and T. Mason, “Estimating the electrical conductivity of cement paste pore solutions from K+ and Na+ concentrations”, Cement and Concrete Research, 793-8, 33(6), 2003
D.P. Bentz, C. J. Haecker, X. Feng and P. Stuzman, “Prediction of Cement Physical Properties by Virtual Testing”, Cement International, 86-92, 1(3), 2003
X. Feng, E.J. Garbocze, J.W. Bullard, D.P. Bentz, K.A. Snyer and P.E. Stutzman, EPA: IAG No. DW-113-93903501-0 Part I: Characterizing Blended Cement Materials, NISTIR 7135, 2004, National Institute of Standards and Technology
Use of SCMs and limestone in cement and concrete
X. Feng, E. Garboczi, D. Bentz, T. Mason, and P. Stuzman, “Estimation of the degree of hydration of blended cement pastes by SEM Point-counting procedure”, 1787-1793, 34(10), 2004
X. Feng and D.P.Bentz, “Experimental studies of slag-cement hydration”, The Annual American Ceramic Society meeting, May 1, 2000, St. Louis
D.P. Bentz, C.J. Haecker, X. Feng and P. Stuzman, Prediction of Cement Physical Properties by Virtual Testing, VDZ Kongresse, Germany, 9, 2002
X. Feng and J. Olek etc, “Performance-related specifications of concrete bridge superstructures, Task 3.2.1: High-Performance Concrete”, Purdue University, August 2000
J. Olek, X. Feng and B. Magee, “Use of supplementary cementitious materials in bridge decks, interim report: Literature review”, Purdue University, Feb. 2001
X. Feng and B. Clark, “Portland-Limestone Blended Cement: Effects of Limestone Characteristics,” PCA R & D Serial No. SN3241, Portland Cement Association, Skokie, Illinois, 2013.
X. Feng and B. Clark, “Evaluation of the Physical and Chemical Properties of FA Products for Use in Portland Cement Concrete,” May 2011, World of Coal Ash, Denver, Colorado.
Studies on testing sulfate content in soils
X. Feng, and C. Hayes, Test methods for water-soluble sulfate in soils, PCA R & D Serial No. SN3016b, Portland Cement Association, 2010.
Alkali-silica reaction
X. Feng, M.D.A Thomas, T.W. Bremner, B.J Balcom, K.J. Folliard, “Studies on lithium salts to mitigate ASR-induced expansion in new concrete: a critical review”, Cement and Concrete Research, 1789-1796, 35, 2005
X. Feng, B.J Balcom, M.D.A Thomas, T.W. Bremner, “Na and Li Ion Diffusion in Modified ASTM C1260 Test by Magnetic Resonance Imaging (MRI),” Cement and Concrete Research, 1409-1415, 38, 2008
X. Feng, M. D.A. Thomas, T.W. Bremner, K.J. Folliard and B. Fournier, “New Observations on the Mechanism of Lithium Nitrate against Alkali Silica Reaction (ASR),” Cement and Concrete Research, 94-101, 40, 2010
X. Feng, J.J. Young, M.D.A. Thomas, B.J. Balcom, T.W. Bremner, Lithium measurements by Magnetic Resonance Imaging and pore solution expression, the 12th International Conference on Alkali-Aggregate Reaction, 501-511, Oct, 2004, China
X. Feng, M.D.A Thomas, T.W. Bremner, B.J Balcom, K.J. Folliard, and B. Fournier, “Effects of LiNO3 on ASR-induced expansion and dissolution of silica”, Berube symposium, 2006
X. Feng, M. D.A. Thomas, T.W. Bremner, B.J. Balcom, K.J. Folliard and B. Fournier, “Summary of Research on the Effect of LiNO3 on Alkali-silica Reaction in New Concrete,” the 13th International Conference on Alkali-Aggregate Reaction, June 2008, Trondheim, Norway.
X. Feng and B. Clark, “Correlations between the Laboratory Test Methods for Potential Alkali-Silica Reactivity of Aggregates,” the 14th International Conference on Alkali-Aggregate Reaction, June 2012, Austin, Texas.
Chloride transport properties
X. Feng, E. Garboczi, J. Bullard, D. Bentz, T. Mason, and P. Stuzman, “Expanding a tool for predicting chloride diffusivity in concrete so it can be used by manufacturers to evaluate the durability of concrete made with blended cements”, NISTIR 7135, 2004, National Institute of Standards and Technology
D.P. Bentz and X. Feng, Mathematical studies of gas permeability in concrete pastes, “Testing and Modelling the Chloride Ingress into Concrete”, RILEM Proceedings PRO 19, pp. 225, 2000 Phosphate-based cementing materials
Feng, X., and Yang, N., The anion polymerization of [SiO4]4- and [PO4]3- anions in the C-S-P system, Cement and Concrete Research, 407, 17(3), 1997
