Rice Hull and Cement Plaster as a Main Component in Making Fire-Retardant Wall Boards

Abstract

INTRODUCTION

Rice hull is the hard-protecting coverings of grains of rice. Rice hull also made up of opaline silica and lignin. Cement plaster is a mixture of suitable plaster, sand, Portland cement, and water which is normally applied to masonry interiors and exteriors to achieve a smooth surface. The researchers conducted the study to help people to lessen or prevent scattering of fire when it comes to fire accidents.

METHODS

The researchers gathered the ingredients or materials and started making the target density for the wallboard 0.75 g / cm3. The dried rice hulls were weighed by 680 g per board. They weighed the adhesive resin by 120 g per board. Then, the two components were mixed. After that, the mixed components were put on a board molder and pressed my bare hands. The molded boards were put in the machine and were pressed thoroughly. After the boards were pressed, the researchers applied 3mm and 6mm of cement plaster and waited for a month for curing.

RESULTS

The researchers tested it in an open fireplace. The researchers tried to test it for 15 minutes, 20 minutes, and 30 minutes. It only turned the cement black but it did not affect the quality of the board.

DISCUSSIONS

The researchers concluded that the board was fire-retardant because there were only a few damages during the testing. They concluded that the fire didn't pass through the other side of the board, which is a positive outcome of the testing.