Research Notes on Using Recycled Materials as Acoustic Panels

Overview of the Research

  • Title of Study: Using Recycled Materials as Acoustic Panels: Its Effectiveness in Reducing Noise
  • Presented by: Jasmin Noyne Bangyao, Denz Marky B. Dejacto, Kris Ivan J. Suson, King James Cyreyl P. Rojas, Keanrey S. Relampagos, Lalaine M. Oncines, Ian Maglinte, Rhiana Nicole A. Cabansay, and Carl Thomas S. Alfonso
  • Purpose: Investigate the effectiveness of acoustic panels made from recycled materials in reducing noise pollution.

Background and Rationale

  • Noise Pollution: A significant environmental issue affecting health and wellbeing, linked to negative effects such as stress and cognitive impairment in students.
    • WHO: Noise pollution is identified as a dangerous environmental threat.
    • Research Focus: We explore sustainable and cost-effective solutions to traditional acoustic panels using recycled materials, aiming to lower production costs and environmental impact.

Recycled Materials Used

  • Materials Utilized:
    • Egg trays
    • Denim fabrics
    • Polyurethane foam (PU)
    • Cardboard
    • Glue (for assembly)

Study Objectives

  • Assess the overall cost of producing acoustic panels from recycled materials.
  • Identify the effectiveness of these panels at various sound levels (65db, 75db, 85db, 95db, and 105db).
  • Compare sound levels before and after installation of the panels.

Methodology

  • Research Design: Quantitative-experimental approach.
  • Setting: Conducted in a single room located in Purok 3 Little Hawaii, Barangay Cogon Pardo, Cebu City, Philippines.
  • Data Collection: Sound levels measured using a sound level meter before and after installation of the acoustic panels.
    • Measurement Process: Calibrate sound sources to play standardized noise at defined levels.

Experimental Results Summary

  • Key Findings:
    • Statistically significant noise reduction observed:
    • Average decibel reduction of approximately 12.9212.92 dB after installation of acoustic panels.
    • Various levels showed consistent results, validating that recycled acoustic panels effectively reduce noise.
    • Statistical Analysis: Paired t-tests indicated significant differences (t = 7.01, p < 0.01).

Cost Analysis

  • Total expenditure for materials was approximately ₱2,344, yielding about 70 acoustic panels, demonstrating a cost-effective solution compared to traditional materials.

Implications of the Research

  • Sustainability and Innovation:
    • This study enhances awareness of using recycled materials, benefiting noise control while promoting environmental conservation.
    • Highlights the potential for future architectural and design applications utilizing these sustainable methods for sound absorption.

Recommendations and Future Research

  • Further development on durability and aesthetics of recycled panels.
  • Encouraging integration of recycled materials in architectural projects for noise management.
  • Explore long-term performance and fire resistance of these panels to enhance applicability in various settings.