Investigation on effect of nano gel wollastonite on properties usage of wood-cement composites manufactured from rice straw  fibers

Hasanpoor Tichi, Ali; Baziyar, Behzad

doi:10.22092/ijwpr.2018.120242.1454

Document Type : Research Paper

Authors

¹ Assistant Prof, Dep. of Wood Science and Engineering, Technical Faculty of No. 2, Mazandaran Branch, Technical and Vocational University (TVU), Sari, Iran

² Dept. of Wood and Paper Science and Technology, Islamic Azad University(IAU), Tehran, Iran

https://doi.org/10.22092/ijwpr.2018.120242.1454

Abstract

In this study the effect of nano gel wollastonite usage in three level (0 , 5 and 10 percent per dry
by weight of the cement) and the mixture ratios of lingocellulosic material to cement in three
level 10:90, 20:80 and 30:70 on physical, mechanical , microscopic and biological properties of composite
made from rice straw fibers- cement was investigated. Three replicates for each treatment and 27
experimental boards were manufactured. Specimens were prepared according to DIN- EN634
standard test methods to measure mechanical and physical properties. Mechanical and physical properties including static bending strength, modulus of elasticity, interior bonding(IB),water absorption after 2 and 24 hours immersion in the water , density and decay resistant (loss weight) were measured. Micro- structural properties of composites were evaluated by SEM images. The results showed that, bending strength , modulus of elasticity , interior bonding and density were significantly increased with increasing Nano gel wollastonite . Also, with increasing Nano gel wollastonite , dimensional stability and decay resistance were increased in comparison with the control sample.
Results of scanning electron microscopy showed that the calcium hydroxide formed hydrated calcium silicate gel (C-S-H gel) after addition the Nano gel wollastonite . SEM images showed that the micro- structure of the boards were improved by increasing the nano- wollastonite content.

Keywords

Main Subjects

Composite wood products

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Investigation on effect of nano gel wollastonite on properties usage of wood-cement composites manufactured from rice straw fibers

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Volume 33, Issue 3 - Serial Number 64September 2018Pages 453-465

Volume 33, Issue 3 - Serial Number 64
September 2018
Pages 453-465