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                當前位置:鋼纖維混凝土的基本性能
                鋼纖維混凝土的基本性能
                [來源:http://www.www.tjejtrampet.com] [作者:567zx] [日期:18-12-24] [瀏覽次數:]

                鋼纖維混凝土的基本性能 Basic properties of steel fiber reinforced concrete (1)強度和重量比值增大。這是鋼纖維混凝土具有優越經濟性的重要標志。 (1) the ratio of strength to weight is increased. This is an important sign of steel fiber reinforced concrete with superior economy. (2)具有較高的抗拉、抗彎、抗剪和抗扭強度。在混凝土中摻入適量鋼纖維,其抗拉強度提高25%~50%,抗彎強度提高40%~80%,抗剪強度提高50%~100%。 (2) high tensile strength, bending resistance, shear strength and torsional strength. In the concrete, the tensile strength of the steel fiber is increased by 25% to 50%, the bending strength is increased by 40% to 80%, and the shear strength is increased by 50% to 100%. (3)具有卓越的抗沖擊性能。材料抵抗沖擊或震動荷載作用的性能,稱為沖擊韌性,在通常的纖維摻量下,沖擊抗壓韌性可提高2~7倍,沖擊抗彎、抗拉等韌性可提高幾倍到幾十倍。 (3) excellent impact resistance. The properties of material resistance to impact or vibration load are called impact toughness. Under the ordinary fiber content, the impact compression toughness can be increased by 2~7 times, and the toughness of the impact bending and tensile can be increased by several times to several times. (4)收縮性能明顯改善。在通常的纖維摻量下,鋼纖維混凝土較普通混凝土的收縮值降低7%~9%。 (4) the shrinkage performance was obviously improved. Under the usual fiber content, the shrinkage value of steel fiber reinforced concrete is lower than that of ordinary concrete by 7% to 9%. (5)抗疲勞性能顯著提高。鋼纖維混凝土的抗彎和抗壓疲勞性能比普通混凝土都有較大改善。 (5) the anti fatigue performance was significantly improved. The flexural and compressive fatigue properties of steel fiber reinforced concrete are much better than those of ordinary concrete. (6)耐久性能顯著提高。鋼纖維混凝土除抗滲性能與普通混凝土相比沒有明顯變化外,由于鋼纖維混凝土抗裂性、整體性好,因而耐凍融性、耐熱性、耐磨性、抗氣蝕性和抗腐蝕性均有顯著提高。例如,摻量為1%、強度等級為CF35的鋼纖維混凝土耐磨損失比普通混凝土降低30%。摻有2%鋼纖維高強混凝土抗氣蝕能力較其他條件相同的高強混凝土提高1.4倍。鋼纖維混凝土在空氣、污水和海水中都呈現良好的耐腐蝕性,暴露在污水和海水中5年后的試件碳化深度小于5mm,只有表層的鋼纖維產生銹斑,內部鋼纖維未銹蝕,不像普通鋼筋混凝土中鋼筋銹蝕后,銹蝕層體積膨脹而將混凝土脹裂。 (6) the durability improved significantly. The anti seepage property of steel fiber concrete has no obvious change compared with that of ordinary concrete. As the crack resistance and integrity of the steel fiber concrete are good, the resistance to freezing and thawing, heat resistance, wear resistance, corrosion resistance and corrosion resistance of steel fiber reinforced concrete are greatly improved. For example, the wear resistance of steel fiber reinforced concrete with a dosage of 1% and a strength grade of CF35 is 30% lower than that of ordinary concrete. The corrosion resistance of high-strength concrete mixed with 2% steel fiber is 1.4 times higher than that of other high strength concrete. Steel fiber concrete exhibits good corrosion resistance in air, sewage and sea water. After 5 years of exposure to sewage and seawater, the carbonization depth of the specimens is less than 5mm. Only the steel fibers in the surface layer produce rust spots, and the internal steel fibers are not corroded. Unlike the corrosion of the steel bars in the ordinary reinforced concrete, the corrosion layer expands to the concrete. Bulge.

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