Effects of treated bamboo fiber and linseed oil on the physical and mechanical properties of unfired clay brick

Aubin Fossouo; Hoback, Alan S.

Effects of treated bamboo fiber and linseed oil on the physical and mechanical properties of unfired clay brick

Aubin Fossouo, Hoback, Alan S.

Conference: 4th International Sustainable Building SymposiumAt: Dallas, TX, 2019/07.

Abstract:

Unfired composite clay brick is being investigated. Amendment with bamboo fibers are considered for bending strength, and waste linseed oil is considered for protection from moisture. The fiber used in this study was extracted from Guadua Angustifolia bamboo and treated with 4% Lye for 24 hours. The composite brick was made by adding soil (clay & sand), 0 to 7% treated bamboo`s fibers and 8% mixing liquids (water, oil) to make water-fiber-brick (WFB) and oil-fiber-brick (OFB). The mixture was confined using a hydraulic jack. The specimens were air-dried for 45 days. The tendency to absorb water was measured by soaking the bricks in water for 24 hours. The results showed a decrease of water absorption by 71% due to the incorporation of linseed oil. At 3% ratio of bamboo fiber to clay, the bending and compression strength of the OFB composite reached an optimum value of 2.50 Mpa (357psi) and 23.4Mpa (3400psi), respectively. Linseed oil contributed to increasing the strength of the brick. This is due to the fact that unsaturated linseed oil reacts with oxygen to form a stable polymer with strong bonds.

Link to full paper

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