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Home Science & Environment Space Exploration

Filipino researchers identify Taal ash as new radiation shield

February 9, 2025
in Space Exploration
Reading Time: 2 mins read
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Filipino researchers identify Taal ash as new radiation shield

by Simon Mansfield

Sydney, Australia (SPX) Feb 05, 2025






Researchers affiliated with the Ateneo de Manila University and National University- Mall of Asia Campus have revealed a unique application for the large volumes of volcanic ash that blanketed parts of the Philippines. Their investigation shows that Taal volcanic ash (TVA) can effectively serve as a barrier against ionizing radiation, potentially providing more sustainable shielding in industries and medical facilities.



Radiation shielding is vital for areas using ionizing radiation to diagnose illnesses, detect structural flaws, or sterilize food. Conventional protective materials like concrete and lead can be expensive, and their production may harm the environment. In contrast, volcanic ash-based construction materials could offer a lightweight, eco-friendly alternative.



In 2020, Taal Volcano unleashed an eruption that shrouded Luzon with ash, creating disposal issues. Researchers Floyd Rey P. Plando, Myris V. Supnad, and Joel T. Maquiling turned that challenge into an opportunity. Through comprehensive testing, they discovered that TVA-based geopolymer mortar contains iron-rich minerals that help reduce radiation penetration.



“Iron has greater interaction power because it contains more electrons. In addition, it is a dense metal due to its heavy and tightly-packed structure. High-electron and denser material, such as TVA, has stronger efficiency in blocking hazardous X-rays and gamma rays,” Plando said.



“Moreover, the optimal blend of volcanic ash and aggregates result in effective photon (radiation) attenuation because of the resulting disorder (entropy) in granular matter microstructures,” Maquiling further explained.



Since the Philippines sits along the Pacific Ring of Fire, ample volcanic material is readily available. This discovery not only provides an innovative strategy for handling volcanic debris but also promises improved safety in facilities that rely on radiation-based procedures.



Further experiments will focus on refining the material’s resilience and optimizing its capacity to block dangerous radiation. Still, the study proves that even destructive geological events can spark critical advancements in technology and public welfare.



Research Report:Assessment of compressive strength, microstructure, thermal, and radiation shielding properties of Taal volcanic ash-based geopolymer mortar


Related Links

Ateneo de Manila University

Space Technology News – Applications and Research


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