Dimensional Stability and Mechanical Properties of Strandboard Made from Bamboo

Ihak Sumardi, Shigehiko Suzuki

Abstract


Dimensional changes in bamboo strandboard could decrease the bond durability, causing problems for structural materials. Thus, it is critical and of practical importance to study the relationship between thickness swelling (TS) and internal bond (IB) strength loss on bamboo strandboard. To determine the relationship between dimensional stability and bond durability of bamboo strandboard, various densities and board types were examined. The results show that board density and board types affected TS and water absorption (WA). The board with lower density was easier to swell than that of higher density. The board density influenced the TS/WA ratio for short-term water soaking, but not for long-term water soaking. For layer-structured board, the TS/WA ratio of randomly oriented homogenous board (RAND board) was slightly higher than that of uni-directionally oriented homogenous (UNID), three-layered oriented strandboard with cross-oriented core layer (3LYC), and three-layered oriented with random core (3LYR) boards. The maximum swelling can only be reached by high-temperature water soaking. The IB strength loss of UNID board was higher than that of RAND board.

Keywords


Thickness swelling; Internal bond; Bamboo; Strandboard; Dimensional stability

Full Text: PDF

Welcome to BioResources! This online, peer-reviewed journal is devoted to the science and engineering of biomaterials and chemicals from lignocellulosic sources for new end uses and new capabilities. The editors of BioResources would be very happy to assist you during the process of submitting or reviewing articles. Please note that logging in is required in order to submit or review articles. Martin A. Hubbe, (919) 513-3022, hubbe@ncsu.edu; Lucian A. Lucia, (919) 515-7707, lucian.lucia@gmail.com URLs: bioresourcesjournal.com; http://ncsu.edu/bioresources ISSN: 1930-2126