000			02787nam a22002417a 4500
003			OSt
005			20261104135811.0
008			261104b |||||||| |||| 00| 0 eng d
050			_aT ENG _bA53 2026
100	1		_aAndrion, Tricia Rei Co
245	1	0	_aEvaluation of chemical properties of perna viridis as a supplementary cementitious material / _cTricia Rei Co Andrion, James Andrew A. Mabasa, Bryan G. Mercado, and Jian Dane Eriol R. Samo.
264			_aEAC Cavite : _bSchool of Engineering, _c2026.
300			_aix, 103 pages ; _c28 cm.
336			_2rdacontent _atext
337			_2rdamedia _aunmediated
338			_2rdacarrier _avolume
504			_aIncludes bibliographical references
520			_aIn building infrastructure, engineers and designers heavily rely on concrete, where this standard concrete produces a significant amount of carbon dioxide emissions. Because of these standard procedures, the urgent need for sustainable alternatives are remarkably high. Along with there, there is a massive amount of seafood or marine waste in the Philippines, specifically discarded Green Mussel shells (Perna Viridis, locally known as "Tahong"), which pose considerable environmental and municipal landfill hindrances. This study evaluates the viability of calcined green mussel shell as a supplementary cementitious material (SCM) to mitigate carbon emissions and marine waste in Cavite, Philippines. Following ASTM C311 protocols, 5.6 kg of discarded mussel shells were cleaned, sun-dried for 72 hours, crushed via hammermill, and calcined at for 4 hours to convert calcium carbonate (CaCO3) into reactive calcium oxide (CaO). X-ray fluorescence (XRF) analysis revealed that while the ash was predominantly composed of CaO (65.5%), the primary pozzolanic oxides silicon dioxide (SiOs, 1.1%), aluminum oxide (Al:O, 4.5%), and iron oxide (Fe:Os, 0.1%)-yielded a combined total of only 5.7%. This fails to meet the minimum ASTM C618 standards for Class F/N (70%) or Class C (50%) pozzolans. Sulfur trioxide (SO) content was measured at 0.3%. Physical analysis demonstrated a moisture content of 0.07% (well within the 3% limit) and a Loss on Ignition (LOI) of 7.2%, which slightly exceeds the 6.0% maximum threshold. Consequently, calcined Perna viridis shell ash lacks the necessary reactive silica and alumina to serve as a pozzolanic SCM under ASTM C618. However, its high CaO purity, low moisture content, and eco-friendly attributes position it as a promising limestone filler and raw alternative input for non-structural civil engineering applications and low-carbon architectural elements.
700	1		_4author _aMabasa, James Andrew A.
700	1		_4author _aMercado, Bryan G.
700	1		_4author _aSamo, Jian Dane Eriol R.
942			_2lcc _cTH _kEAC Cavite-Thesis _n0
999			_c100667 _d100667