Microwave Absorption Performance of Multilayer Anti-Radiation Bricks for Sustainable Construction Materials

• Published in: 14th IEEE International Conference on Control System, Computing and Engineering, ICCSCE 2024 - Proceedings
• Main Author: Kasim L.M.; Idris H.A.; Taib M.N.; Ahmad A.; Noor N.M.; Ismail N.A.; Kasim N.M.; Hilmi N.H.
• Format: Conference paper
• Language: English
• Published: Institute of Electrical and Electronics Engineers Inc. 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85207068012&doi=10.1109%2fICCSCE61582.2024.10696070&partnerID=40&md5=499e10d76f52a90e3262075553be099f

This paper investigates the microwave absorption properties of a multilayer anti microwave cement brick. The brick incorporates polyethylene terephthalate (PET) recycled plastic with agricultural waste, palm oil fuel ash (POFA). The brick consists of three layers with varying compositions of PET (5%, 10% and 30%) and a constant 10% and 30% POFA (MLB1 and MLB2) as partial replacements of sand and cement respectively. Measurement is carried out for the dielectric properties and resistivity of the mixtures. The microwave absorption performance across a frequency range of 1 to 12 GHz was evaluated using the NRL Free Space Arch Method. MLB1 composition shows absorption reaching -47.98 dB at 11.66 GHz while MLB2 demonstrates consistent absorption across the entire frequency range. The compressive strength test shows MLB1 achieve average strength of 14.39 MPa. The research finding shows the developed brick can be effectively utilized in construction with electromagnetic absorption properties. © 2024 IEEE.