Application of Wood Chips as Partial Substitution for Fine Aggregates in Concrete

Abstract

Due to increasing environmental awareness and stricter regulations regarding industrial waste management, there is a growing interest in studying the properties of industrial waste and finding solutions to utilize its valuable components as secondary raw materials in various industries.

While wood sawdust is still categorized as industrial waste in many countries, it differs from typical waste in terms of its physical and chemical properties. Historically, before refrigeration, it was even used in homes for ice storage during the summer months.

This report explores the potential uses of wood sawdust as a partial replacement for fine aggregate in concrete, considering its specific physical and chemical characteristics and its applications in industries such as construction. The study examines various concrete properties, including fresh, hardened, and durability properties, when different percentages of wood sawdust are used as a partial replacement for fine aggregate. The research also includes the impact of pretreating the sawdust with water and sodium silicate and varying the water-to-cement ratio.

The report investigates the use of a constant 5% wood sawdust replacement for fine aggregate, with different percentages of silica fume used as a partial replacement for cement. The findings indicate a significant reduction in the weight of concrete when wood sawdust is used as a replacement for fine aggregate.