Rice Husk Granules (RHG) with Eggshells as Insulation Material

Abstract

INTRODUCTION

Insulation in infrastructures and buildings provides resistance to heat flow and helps in reducing cooling costs. But due to the high cost of common insulation materials, families from the lower class cannot afford to install this in their homes. In this study, rice husk granules and eggshells, considered as wastes, were used in producing an insulation material. With this, an innovative, eco-friendly and low-cost insulation material was developed that has a possible impact on the industry and minimize discomfort among people.

METHODS

The researchers used experimental research design in the study. Two samples were produced and replicated; sample A (½ cup rice husk granules: ¼ cup wood glue), and sample B (¼ cup rice husk granules: ¼ cup eggshells: ¼ cup wood glue) that were compared in terms of water absorption, flame resistance, and compressive strength. With the data gathered, a quantitative research approach was used to determine which among the two samples is more effective to be used as insulation material.

RESULTS

Findings of the study revealed that the water absorbed of Sample B with a mean of 4 grams is lighter than Sample A with 10 grams. The flame time of Sample A has a mean of 2.56 seconds and 36.67 mm for burn length after 12 seconds. Sample B has flame time and burn length of 2.17 seconds and 32.67 mm, respectively after 12 seconds. After 60 seconds, Sample A has a flame time of 2.70 seconds and burn length of 66.67 mm. On the other hand, Sample B has a flame time and burn length of 2.09 seconds and 61.67 mm, respectively after 60 seconds. It is evident that Sample B is more resistant to flame compared to Sample A. Also, it showed that there is a significant difference between the two samples in terms of water absorption and flame resistance. The data for compressive strength showed that Sample B with a mean of 0.53 psi is stronger than Sample A with 0.37 psi. However, the result of statistical treatment for compressive strength revealed that Sample A and Sample B are not significantly different.

DISCUSSIONS

With the results driven, Sample B which is rice husk granules with eggshells and wood glue is way better to be used as insulation material in terms of water absorption and flame resistance. Consideration in testing compressive strength again, as well with other tests including thermal conductivity shall be conducted, to further determine the capability of the material in insulation purposes.