PNNL

Jon Lapeyre is a postdoctoral researcher who specializes in Portland cement and non-Portland cement cementitious binders. Since he joined Pacific Northwest National Laboratory in 2023, his research efforts have focused on cementitious waste forms and how early-age and cured properties are affected by non–land disposal restricted organics in grouts mixed with non-radioactive solutions, simulating the chemistries of treated tank waste. He has also worked with radioactive treated tank waste samples, grouting them by utilizing both proprietary and non-proprietary grout mix designs and evaluating the immobilization performance of these materials under the U.S. Environmental Protection Agency’s SW-846 Test Method 1311. Lapeyre has experience with using conventional mortars and concrete mix designs, fabricating samples, and testing the compressive strength of samples under the environmental conditions within the concrete superstructure of tanks located at the Hanford Site. These experiments involve a suite of characterization techniques—notably isothermal microcalorimetry, scanning electron microscopy, X-ray diffraction, and inductively coupled plasma optical emission spectroscopy/microscopy, among others—utilized for understanding reaction kinetics, phase composition, microstructure, and pore solution.

• Cement/grout chemistry and reaction kinetics
• Supplemental cementitious materials in grouts
• Sulfate-aluminum reactions in cement and grouts
• Carbonation and sequestration of cementitious materials
• Corrosion of cement and grouts
• Ceramic processing
• Solid-state and liquid sintering

• PhD in materials science and engineering, Missouri University of Science and Technology
• BS in ceramic engineering, Missouri University of Science and Technology

• American Ceramic Society
• International Union of Laboratories and Experts in Construction Materials, Systems and Structures
• Peer reviewer, Cement and Concrete Composites, 2025–present
• Peer reviewer, Cement and Concrete Research, 2024–present
• Peer reviewer, Materials and Structures, 2024–present
• Peer reviewer, Journal of Materials in Civil Engineering, 2017–present

• Paper of Note recognition for “Influence of Organic Constituents in LAW Tank Waste Simulant on the Processing Properties of Grout Waste Forms,” Waste Management Symposia 2025
• Superior Paper recognition for “Influence of Organic Constituents in LAW Tank Waste Simulant on the Processing Properties of Grout Waste Forms,” Waste Management Symposia 2025
• Outstanding Material Science and Engineering Graduate Student, Department of Material Science and Engineering, May 2020
• Award for Abstract #1932690, “Sustainable and Durable Calcium Sulfoaluminate Binders Enabled by Multi-Physics Characterization and Theory-Guided Machined Learning,” National Science Foundation, September 2019
• Award for Abstract #1661609, “A Thermo-Kinetic Approach to Enhance the Use of Clays in Concrete,” National Science Foundation, July 2017

2025

• Asmussen, R. M., J. L. Lapeyre, J. M. Gacutan, P. P. Schonewill, A. C. Carney, A. M. Westesen, H. M. Felmy, and G. L. Smith. 2025. AltLAW-Technology Maturation: FY24 Summary Report. Pacific Northwest National Laboratory PNNL-37336. Richland, WA.