【正文】 indicator for the workability of fiber reinforced concrete, and it is one of advantages of fiber reinforced concrete over plain concrete. Toughness can be defined as the capacity of energy absorption of material or structure from loading to failure. The toughness of fiber reinforced concrete includes pression toughness, flexural toughness and shear toughness, etc. Currently flexural toughness is widely used as a measure of toughness of fiber reinforced concrete. Because flexural failure is happened under three kinds of loadings including bending, tension and pression, it is much better to measure the integrated effect of toughness. Nowadays the traditional method to evaluate the toughness is based on the bending beams（ 150 mm150 mm550mm） . However, the formwork of the beam may show some influence on the fiber orientation and does not correspond to the fiber orientation in the practice such as industrial floor very well. In order to reduce the influence of the formwork on the fiber orientation and to simulate the loading behavior of industrial panel, according to RILEM: Test and design methods for steel fiber reinforced concrete─ Bending test, a series simply supported panel（ 600 mm 600 mm 100mm） test with different fiber types and fiber contents has been carried out. Key Words： Fiber； Fiber Reinforced Panel； Flexural Toughness 纖維混凝土板抗彎性能的試驗研究 III 目 錄 摘 要 ..................................................................................................................................... I Abstract ...................................................................................................................................... II 1 混凝土 .................................................................................................................................. 1 混凝土的主要性質(zhì) ................................................................................................... 1 強度 ................................................................................................................ 1 工作性 ............................................................................................................ 1 耐久性 ............................................................................................................ 4 混凝土的發(fā)展 ........................................................................................................... 7 鋼筋混凝土（ Steel Reinforced Concrete） .................................................. 7 預(yù)應(yīng)力混凝土 （ Prestressed Concrete） ..................................................... 7 高強混凝土（ High Strength Concrete） ...................................................... 7 高性能混凝土（ High Performance Concrete） ........................................... 8 纖維混凝土（ Fiber Reinforced Concrete） ................................................. 8 自密實混凝土（ Selfpacting concrete） ............................................... 9 2 纖維混凝土 ........................................................................................................................ 10 纖維對混凝土 基體增強增韌作用的影響因素 ..................................................... 10 纖維混凝土國內(nèi)外發(fā)展歷史 ................................................................................. 11 鋼纖維混凝土（ Steel Fiber Reinforced Concrete） ............................................. 12 鋼纖維混凝土的優(yōu)點 [24] ........................................................................... 12 鋼纖維混凝土的發(fā)展方向 .......................................................................... 13 合成纖維混凝土 ..................................................................................................... 14 聚丙烯短纖維（ Micro PPfiber） .............................................................. 14 聚丙烯長纖維（ Macro PPfiber） ............................................................. 15 合成纖維與鋼纖維對混凝土基體阻裂效應(yīng)的區(qū)別 .................................. 15 混雜纖維混凝土（ Hybrid Fiber Reinforced Concrete） ...................................... 15 常見的纖維混雜模式 .................................................................................. 16 混雜纖維混凝土的力學(xué)性能 ...................................................................... 17 纖維混凝土的實際工程應(yīng)用 ................................................................................. 17 道路和橋梁工程 .......................................................................................... 17 纖維混凝土板抗彎性能的試驗研究 IV 隧道和鐵路工程 .......................................................................................... 18 建筑結(jié)構(gòu)及預(yù)制構(gòu)件 .................................................................................. 18 大壩、水庫等水利工程 .............................................................................. 19 港口、海岸及近海工程 .............................................................................. 19 修補加固工程 .............................................................................................. 19 軍事工程 ...................................................................................................... 19 纖維混凝土的增強理論 ......................................................................................... 20 復(fù)合材料理論 .............................................................................................. 20 纖維間距理論 .............................................................................................. 22 纖維混凝土的開裂機理 ......................................................................................... 23 3 纖維混凝土的基本力學(xué)性能 ............................................................................................ 25 纖維混凝土的抗壓性能 ......................................................................................... 25 纖維混凝土的抗拉性能 ......................................................................................... 26 纖維混凝土的抗彎性能 ...............................................................