Fibre-reinforced cemented soils compressive and tensile strength assessment as a function of filament length
Fibre-reinforced cemented soils compressive and tensile strength assessment as a function of filament length
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DOI：
10.1016/j.geotexmem.2016.09.001
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发表时间：
2017-02-01
影响因子：
5.2
通讯作者：
Consoli, Nilo Cesar
中科院分区：
文献类型：
--
作者：
Festugato, Lucas;Menger, Estefano;Consoli, Nilo Cesar
本研究的目的是开发一种剂量方法的基础上的抗拉和抗压强度的人工水泥纤维加固土考虑纤维长度。评价的控制参数是纤维长度（l）、水泥含量（C）、孔隙率（eta）和孔隙率/水泥比（eta/C-iv）。在本工作中进行了一些无侧限压缩和劈裂拉伸试验。结果表明，在所研究的整个水泥掺量范围内，纤维插入水泥土中，以及纤维长度的增加，均能提高水泥土的无侧限抗压强度和劈裂抗拉强度。结果表明，孔隙率/水泥比，其中体积胶凝材料含量调整的指数（0.28为所有的纤维增强和非增强水泥土混合物），以结束在独特的相关性，为每个混合物，是一个很好的参数，在评价的无侧限抗压强度和劈裂抗拉强度的纤维增强和非增强水泥土的研究。考虑调整后的水泥含量、纤维长度和孔隙度的影响，对析因实验结果进行方差分析（ANOVA），结果表明，所有这些因素都显著影响劈裂抗拉强度和无侧限抗压强度值的实测变化。最后，可以获得独特的剂量关系连接的无侧限抗压强度（q（u））和劈裂抗拉强度（q（t））的桑迪土研究与孔隙率/水泥比（eta/C-iv）和纤维长度（l）。(C)2016爱思唯尔有限公司版权所有
This study aims to develop a dosage methodology based on tensile and compressive strength for artificially cemented fibre reinforced soils considering filament length. The controlling parameters evaluated were the fibre length (l), the cement content (C), the porosity (eta) and the porosity/cement ratio (eta/C-iv). A number of unconfined compression and split tensile tests were carried out in the present work. The results show that fibre insertion in the cemented soil, for the whole range of cement content studied, and the increase of reinforcement length improve unconfined compressive and split tensile strengths. It was shown that the porosity/cement ratio, in which volumetric cementitious material content is adjusted by an exponent (0.28 for all the fibre-reinforced and non-reinforced cemented soil mixtures) to end in unique correlations for each mixture, is a good parameter in the evaluation of the unconfined compressive and split tensile strength of the fibre-reinforced and non-reinforced cemented soil studied. Analysis of variance (ANOVA) performed on the results of a factorial experiment considering the effect of adjusted cement content, fibre length and porosity showed that all of these factors are significant in affecting the measured changes in split tensile and unconfined compressive strength values. Finally, unique dosage relationships could be achieved linking the unconfined compressive strength (q(u)) and the split tensile strength (q(t)) of the sandy soil studied with porosity/cement ratio (eta/C-iv) and fibre length (l). (C) 2016 Elsevier Ltd. All rights reserved.