000			03034nam a22003377a 4500
003			OSt
005			20250701101243.0
008			250630b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH TA 145 _bA45 2024
100			_aAmil, Feil Lyod R. _eauthor
245			_aRheological and mechanical properties of fiber-reinforced self-compacting concrete using basalt as aggregate replacement/ _cFeil Lyod R. Amil, Ma. Regina A. Dela Cruz, Emmanuel H. Embido, John Carlo Lapitan, Arabella L. Masangkay, and Jericho O. Rosales.--
260			_aManila: _bTechnological University of the Philippines, _c2024.
300			_axviii, 181pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's Thesis
502			_aCollege of Engineering.-- _bBachelor of science in civil engineering _cTechnological University of the Philippines, _d2024.
504			_aIncludes bibliographic references and index.
520			_aSelf-compacting concrete (SCC) is valued for its high fluidity and ability to fill molds without external vibration, making it ideal for heavily reinforced constructions. However, optimizing its mechanical properties and workability remains a challenge. Incorporating polypropylene fibers (PPF) and polycarboxylate ether (PCE) has shown potential to enhance both rheological and mechanical properties, while replacing traditional aggregates with basalt offers an environmentally friendly alternative. This study investigates the effects of basalt aggregates (BA) and polypropylene fibers on SCC's rheological and mechanical properties, with coarse aggregates replaced by 0%, 25%, 50%, 75%, and 100% basalt, and PPF added at 0.05% and 0.1% of concrete volume. The PCE-based superplasticizer dosage was kept constant at 2.2% of cement weight with a water-cement (w/c) ratio of 0.9. Fresh state tests—Slump Flow, T500 Slump Flow, V-Funnel, and L-Box—were conducted per EFNARC Guidelines, with compressive, flexural, and split-tensile strengths evaluated at 7, 14, and 28 days. Results indicated that increasing PPF and basalt content reduced workability, while SCC mixes without PPF showed superior mechanical properties. The suitable mix, A1 (0% PPF, 25% gravel, 75% basalt), achieved a 735 mm Slump Flow, 6.26-second V-Funnel time, and 0.813 L-Box ratio, with 28-day strengths of 48.333 MPa (compressive), 5.617 MPa (split-tensile), and 5.963 MPa (flexural). In conclusion, the combination of basalt aggregates and polypropylene fibers significantly influences SCC properties, underscoring the need for precise mix designs to balance workability and strength.
650			_aRhelogical
650			_aMechanical
650			_aBasalt aggregate
700			_aDela Cruz, Ma. Regina A. _eauthor
700			_aEmbido, Emmanuel H. _eauthor
700			_aLapitan, John Carlo _eauthor
700			_aMasangkay, Arabella I. _eauthor
700			_aRosales, Jericho O. _eauthor
942			_2lcc _cBTH COE _n0
999			_c30004 _d30004