Abstract
Wood-Cement Board Reinforced with Steel Nets and Woven Hemp Yarns: Physical and Mechanical Properties
Highlights
Boards were reinforced with steel nets and woven hemp yarns adding cement to the dry mass of wood in the ratio of 2.5:1, 2.75:1 and 3:1
Results showed that reinforcement of boards with steel nets and 3 parts of cement added to the dry mass of wood improved all physical and mechanical properties
Properties of these boards showed a similar trend to the values of EN 634-2:2007 standard, except for modulus of elasticity, which was lower than minimum requirement
Summary
Due to increasing population and environmental awareness, demand for light, cheap and more ecofriendly materials is increasing. The use of cement boards reinforced with asbestos, which is still produced in some countries, cannot meet the environmental requirements In this regard, cement-bonded composites reinforced with natural fibers or wood particles are presented as a valuable construction material. Due to embrittlement characteristics of cement and low tensile strength, these boards are susceptible to fail under different loadings Reinforcing these panels with different materials seems necessary for improving their physical and mechanical properties. Xiong et al studied ribbed roof panels made of high-density wood shaving-cement boards reinforced with steel strips They reported that employing wood shavings increased flexural strength, load-carrying capacity, stiffness, and plastic property of cement based panels compared to panels without wood shavings (Xiong, 1996). Reinforcement of wood cement boards was studied by placing two types of steel and woven hemp yarn nets as reinforcement at the critical points of the board, on top and bottom sides
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