Researchers from two Philippine institutions are investigating the feasibility of using volcanic ash–specifically from the Taal Volcano–for radiation shielding in hospitals, industrial locations, and nuclear plants.
Researchers Floyd Rey Plando, Myris Supnad, and Joel Maquiling, from Ateneo de Manila University (ADMU) and National University-Mall of Asia Campus (NU-MOA), investigated the possibility of using this pyroclastic material in buildings rather than discarding it as garbage.
How did they do it?
Their research used volcanic ash that was gathered during the eruption to make geopolymer mortar, which is an inorganic polymer-based building material.
The scientists found that Taal volcanic ash-based geopolymer mortars efficiently absorb and block radiation, lowering its intensity. This shielding property is further enhanced by the iron-rich minerals present in TVA.
These polymers are created when an alkaline activator reacts chemically with aluminosilicate constituents, including fly ash or metakaolin.
How vital is it?
For locations that use ionizing radiation to identify structural defects, diagnose diseases, or sterilize food, radiation shielding is essential.
Traditional protective materials, such as lead and concrete, can be costly and environmentally harmful to produce. On the other hand, building materials made of volcanic ash might provide a portable, environmentally responsible substitute.
The Taal Volcano erupted in 2020, covering Luzon with ash and causing problems with disposal.
