| 纤维加筋复合固化黄土的强度特性研究 |
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| 引用本文： | 刘羽健,姚志华,王天.纤维加筋复合固化黄土的强度特性研究[J].路基工程,2017,0(2):60-63. |
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| 作者姓名： | 刘羽健 姚志华 王天 |
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| 作者单位： | 1.空军工程大学装备管理与安全工程学院, 西安 710051 |
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| 基金项目： | 国家自然科学基金（51509257） |
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| 摘 要： | 为了探究纤维加筋固化土技术应用于应急机场的可行性，通过无侧限抗压强度试验，探究了不同掺量和龄期的水泥、固化剂以及纤维复合固化黄土的强度特性。结果表明:固化剂与纤维可以提高黄土无侧限抗压强度，其中水泥固化效果最优，且最优掺量为8%，随着纤维和砂掺量的增加，加筋固化土的强度先增大后又减小，纤维掺量为0.30%和0.45%时固化黄土强度较高，砂的最佳掺量在4%左右。进行简易机场布设时，建议机场道面工程使用12 mm改性聚丙烯纤维掺量0.45%，固化剂选用P.O 32.5R硅酸盐水泥掺量8%，砂掺量低于4%的复合固化土。
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| 关 键 词： | 简易机场 道面工程 复合固化土 强度特性 固化剂 加筋纤维 |
| 收稿时间： | 2019-11-08 |
Study on Strength Characteristics of Compound Stabilized Loess in Fiber Reinforcement |
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| Abstract: | In order to explore the feasibility of applying the technology of fiber reinforcement for soil stabilization into emergency type airfield, unconfined compressive strength tests were carried out to study the strength characteristics of loess in complex solidification by cement, curing agent and fiber in different content and age. The result shows that curing agent and fiber can improve the unconfined compressive strength of the loess, wherein cement contributes optimal solidification effect with the optimal content being 8%; as the content of fiber and sand increases, the strength thereof increases first and then decreases; when the fiber content is 0.30% or 0.45%, the strength is relatively high; and the optimal content of sand is about 4%. It is advised that, in airstrip layout, 0.45% of 12 mm modified polypropylene fiber, 8% of P.O 32.5R Portland cement as curing agent and compound stablized soil with sand amount of less than 4% of sand, may be used. |
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