| 钢纤维和膨胀剂复合效应对喷射混凝土弯曲韧性的影响分析 |
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| 引用本文： | 赵晓晶,马芹永. 钢纤维和膨胀剂复合效应对喷射混凝土弯曲韧性的影响分析[J]. 混凝土与水泥制品, 2012, 0(2): 45-48 |
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| 作者姓名： | 赵晓晶 马芹永 |
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| 作者单位： | 安徽理工大学矿山地下工程教育部工程研究中心 |
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| 基金项目： | 高校博士学科点专项基金(20093415110001);安徽省高校省级自然科学研究项目(KJ2010A103) |
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| 摘 要： | 基于韧性在混凝土结构中的重要性,采用三分点加载的方式,探讨了膨胀剂和钢纤维的复合效应对喷射混凝土弯曲韧性的影响规律。结果表明,当钢纤维和膨胀剂的掺量分别为1.2%和8%时,喷射补偿收缩钢纤维混凝土的荷载-挠度曲线最为饱满;弯曲韧度指数和承载能力变化系数均大于理想弹性材料的相应值。
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| 关 键 词： | 膨胀剂 钢纤维 喷射补偿收缩钢纤维混凝土 弯曲韧性 |
Effecting Analysis of Combined Effects of Steel Fiber and Expansive Agents on Flexural Toughness of Shotcrete |
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| ZHAO Xiao-jing,MA Qin-yong. Effecting Analysis of Combined Effects of Steel Fiber and Expansive Agents on Flexural Toughness of Shotcrete[J]. China Concrete and Cement Products, 2012, 0(2): 45-48 |
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| Authors: | ZHAO Xiao-jing MA Qin-yong |
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| Affiliation: | ZHAO Xiao-jing,MA Qin-yong |
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| Abstract: | Based on the importance of toughness in concrete structure,using the method of three-point loading,the effecting laws of the combined effect of expansive agent and steel fiber on flexural toughness of shotcrete are discussed.The results show that the load-deflection curve of shrinkage-compensating steel fiber reinforced shotcrete is finest when the steel fiber content is 1.2% and expansive agent content is 8%.And the flexural toughness index and the coefficient of loading capacity variation are both bigger than the values of ideal elastic materials. |
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| Keywords: | Expansive agent Steel fiber Shrinkage-compensating steel fiber reinforced shotcrete Flexural toughness |
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