Cahilig, Ma. Kate Owen G. <br/><br/>
Effects of coco-coir on the physical and mechanical properties of concrete roof tile/ 
Ma. Kate Owen G. Cahilig, Kristelle S. Dela Cruz ,chichi F. Hijapon, Jomalyn R. Nilo, Jovelyn R. Tabernilla, And Jhan Mark H. Usop.-- 
 - Manila:  Technological University of the Philippines,  2025. 
 - xii, 116pages:  29cm. 
<br/><br/> Bachelor's Thesis 
<br/><br/>College of Industrial Technology.-- 
<br/><br/>Includes bibliographic references and index. 
<br/><br/> Concrete roof tiles are traditionally made from cement, sand, and water. Over the years,<br/>technological advancements have prompted research into the viability of incorporating<br/>alternative materials. This study investigates the effects of coco-coir on concrete roof tiles'<br/>physical and mechanical properties. Using the ASTM C1492 standard specification for<br/>concrete roof tiles, mix designs with coco-coir concentrations of 0.5%, 1%, and 1.5% by<br/>volume were created. The coco-coir fibers, each with a length of 5 cm, were incorporated<br/>into the concrete mixture. Each mix design was replicated three times to test dimensional<br/>tolerance and water absorption and five times to test transverse strength. The concrete roof<br/>tiles, measuring 42 cm x 33 cm x 2 cm, were designed to achieve a target density of 2.78<br/>g/cc and cured for 28 days. All tiles were tested for dimensional tolerance, water absorption<br/>(physical properties), and transverse strength (mechanical properties) following the ASTM<br/>C1492 standard specifications. The results showed that all tests met the ASTM C1492<br/>standards for dimensional tolerance. Mix 3 (1%) achieved the best result, passing with a<br/>value of 2.76%. Mix 1 (0.5%) and Mix 2 (1%) for water absorption passed the standard<br/>with 14.96% and 15.38%, respectively. All mix designs passed the standard regarding<br/>transverse strength with the following results: 2212 MPa for 0.5% coco-coir, 2054 MPa<br/>for 1%, and 2030 MPa for 1.5%. The acceptability of the product was evaluated using the<br/>TUP Evaluation Instrument for Developed Prototypes. The evaluation reflected an average<br/>mean score of 4.27, corresponding to a descriptive rating of "Very Acceptable." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coco-coir<br/>Concrete roof tile<br/>Physical properties
<br/><br/><label>LC Class. No.: </label>BTH TH 438   / C34 2025