Amil, Feil Lyod R.  <br/><br/>
Rheological and mechanical properties of fiber-reinforced self-compacting concrete using basalt as aggregate replacement/ 
Feil Lyod R. Amil, Ma. Regina A. Dela Cruz, Emmanuel H. Embido, John Carlo Lapitan, Arabella L. Masangkay, and Jericho O. Rosales.-- 
 - Manila:  Technological University of the Philippines,  2024.  
 - xviii, 181pages:   29cm.  
<br/><br/> Bachelor's Thesis 
<br/><br/>College of Engineering.-- 
<br/><br/>Includes bibliographic references and index. 
<br/><br/> Self-compacting concrete (SCC) is valued for its high fluidity and ability to fill<br/>molds without external vibration, making it ideal for heavily reinforced constructions.<br/>However, optimizing its mechanical properties and workability remains a challenge.<br/>Incorporating polypropylene fibers (PPF) and polycarboxylate ether (PCE) has shown<br/>potential to enhance both rheological and mechanical properties, while replacing<br/>traditional aggregates with basalt offers an environmentally friendly alternative. This<br/>study investigates the effects of basalt aggregates (BA) and polypropylene fibers on<br/>SCC's rheological and mechanical properties, with coarse aggregates replaced by 0%,<br/>25%, 50%, 75%, and 100% basalt, and PPF added at 0.05% and 0.1% of concrete<br/>volume. The PCE-based superplasticizer dosage was kept constant at 2.2% of cement<br/>weight with a water-cement (w/c) ratio of 0.9. Fresh state tests—Slump Flow, T500<br/>Slump Flow, V-Funnel, and L-Box—were conducted per EFNARC Guidelines, with<br/>compressive, flexural, and split-tensile strengths evaluated at 7, 14, and 28 days. Results<br/>indicated that increasing PPF and basalt content reduced workability, while SCC mixes<br/>without PPF showed superior mechanical properties. The suitable mix, A1 (0% PPF, 25%<br/>gravel, 75% basalt), achieved a 735 mm Slump Flow, 6.26-second V-Funnel time, and<br/>0.813 L-Box ratio, with 28-day strengths of 48.333 MPa (compressive), 5.617 MPa<br/>(split-tensile), and 5.963 MPa (flexural). In conclusion, the combination of basalt<br/>aggregates and polypropylene fibers significantly influences SCC properties,<br/>underscoring the need for precise mix designs to balance workability and strength. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rhelogical<br/>Mechanical<br/>Basalt aggregate
<br/><br/><label>LC Class. No.: </label>BTH TA 145  / A45 2024