Rice hull ash as fire retardant coating material based on composite biodegradable starch

Abstract

Rice Hull Ash (RHA) is an agricultural waste byproduct. Starch is a carbohydrate primarily found in corn, cassava, and potatoes. Fire-retardants are chemicals or mixtures mixed into or covered in concrete and wood materials to improve their fire-resistance qualities. The importance of having fire-retardant properties in a material primarily used in our homes has not significantly impacted the substances that cover wood-based materials for smooth finishes. This study aims to investigate if the effect of Rice Hull Ash on Composite Biodegradable Starch significantly increases Fire-Retardancy. The performance of an RHA-starch combination as a coating material was examined experimentally, and the results are presented in this research. This study also investigated how RHA-starch mixture prevention affected the mechanical properties of plywood and concrete. These 4 sets of samples, each with a 7-day curing time, were tested for compressive strength and splitting tensile strength. For the plywood, three groups were applied with a 2 mm thickness and left to cure for seven days. The endurance test on plywood successfully increased the time it took to prevent the spread of fire among the other groups. The sample coated with the RHA- starch mixture had the most excellent tensile strength findings from the group undertaking the Fire-Endurance Test. In contrast, the compressive strength among the groups was comparable. The information gathered suggests that using an RHA-starch mixture as a coating material for wood and concrete has much potential as an organic material.