| Abstrakt: |
Four-point bending tests were carried out on ordinary wood-wool cement board (WWCB),oriented wood-wool cement board(OWWCB) and reinforced wood-wool cement board. The results showed that:compared with ordinary WWCB,the bending performance of OWWCB was basically the same. The interfaces between wood-wool layers were obviously decreased, so the overall bending performance of OWWCB had not been improved. When glass fiber grid was directly used for reinforcement,the position of grid had significantly influence on its bending performance. When they were placed on the surface of the WWC Beams, the performance improvement was the largest, up to 30%,while the fiber reinforcement effect was still not fully exerted. Finally, the effect was the best when using the impregnated fiber grid,and the ultimate load of the WWCB and OWWCB had been increased by 42% and 84% respectively, compared with that before reinforcement. [ABSTRACT FROM AUTHOR] |
