Coconut coir ceiling board product with water resistance and thermal insulation property for local communities

Abstract

This research aims to develop the coconut coir ceiling board mixed with natural latex. The 6 ratios of gypsum plaster: coconut coir: sodium silicate: natural rubber: tap water are equal to 1: 0.15: 0.03: 0.00: 1, 1: 0.15: 0.03: 0.01: 1, 1: 0.15: 0.03: 0.02: 1, 1: 0.15: 0.03: 0.03: 1, 1: 0.15: 0.03: 0.04: 1, and 1: 0.15: 0.03: 0.05: 1 by weight. The ceiling boards were produced by casting in normal temperature (30 – 35 degree of Celsius). The properties testing of coconut coir ceiling board mixed with natural latex followed the TIS 219-2009 standard (gypsum plasterboard) including: breaking load, nail pull resistance, deflection, water absorption, density, thermal conductivity coefficient, and real usage. From the results, 1: 0.15: 0.03: 0.03: 1 ratio is the most suitable ratio of coconut coir ceiling board mixed with natural latex. This developed ceiling boards can reduce the quantity of coconut coir waste and get the good thermal insulation ceiling board products.