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Review of the pretreatment methods for wheat straw building materials

This paper reviews the pretreatment methods for wheat straw building materials and classifies the main methods according to their characteristics. The results indicate that the steam cooking and steam explosion treatment methods are relatively better than other methods and that particleboard and medium-density fiberboard manufactured using pretreated wheat straw possess correspondingly superior physical and mechanical properties. However, deficiencies in internal bonding, tensile strength, dimensional instability (swelling) and high moisture absorption remain. Thus, the present study proposes improving the pretreatment method and measurement and suggests a future development direction for the pretreatment of wheat straw building materials.