Publications
Showing 12 results for Author: Mohammed G. Alnaggar
Mar, 2026
Conference Paper
EFFECTS OF MINERAL COMPOSITION ON THE STRUCTURAL PERFORMANCE OF IN-SERVICE IRRADIATED CONCRETE BIOLOGICAL SHIELD
In this work, different types of magmatic rocks used in the construction of concrete biological shields in pressurized water reactors were analyzed for their susceptibility to irradiation damage, determined by the irradiation damage depth in the concrete biological shield after 80 years of operation. The results are as follows: ultrafelsic igneous rocks (e.g., granite) are…
Feb, 2026
Book Chapter
Modeling and Simulation of LFAM: Polymers, Metals, and Cements and Clays, a Review
Large-format additive manufacturing (LFAM) is considered to be one of the most efficient systems for producing large-sized parts. This is primarily due to the high deposition rate, minimal material waste, and cost-effectiveness in terms of both materials and processes. However, the development of modeling and simulations are not maintaining pace with the rapid advancement…
Sep, 2024
Journal
Silicon ion radiation as a viable surrogate for emulating neutron radiation damage in silicates
Nuclear power plants are aging around the world, and a precise assessment of irradiation damage in their components is needed. One key component, concrete, and specifically the silicates in its aggregates, can undergo significant expansion upon neutron radiation, which can lead to cracking and, ultimately, structural failure. However, assessing and predicting the extent of…
Mar, 2024
Conference Paper
Effects of Neutron Irradiation on the Bond Strength of Steel Embedded in Concrete
The structural integrity of the concrete biological shield (CBS) in light water reactors (LWRs) exposed to long-term radiation raises the question of the effects of fast-neutron and gamma irradiation on the bond properties of embedded carbon-steel reinforcement in concrete, which is critical to the transfer of in-service and accidental loads. The design and execution of a…
Nov, 2023
Conference Paper
Life Beyond 80: Can Concrete Degradation Synergistic Modes Become Showstoppers for Light Water Reactors?