古佳雨, 彭泽森, 吴立, 陈春晖. 2020: 生物聚合物对砂土强度影响的研究. 工程地质学报, 28(S1): 51-55. DOI: 10.13544/j.cnki.jeg.2020-292
    引用本文: 古佳雨, 彭泽森, 吴立, 陈春晖. 2020: 生物聚合物对砂土强度影响的研究. 工程地质学报, 28(S1): 51-55. DOI: 10.13544/j.cnki.jeg.2020-292
    GU Jiayu, PENG Zesen, WU Li, CHEN Chunhui. 2020: BIOPOLYMER EFFECT ON SANDY SOIL STRENGTH. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 51-55. DOI: 10.13544/j.cnki.jeg.2020-292
    Citation: GU Jiayu, PENG Zesen, WU Li, CHEN Chunhui. 2020: BIOPOLYMER EFFECT ON SANDY SOIL STRENGTH. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 51-55. DOI: 10.13544/j.cnki.jeg.2020-292

    生物聚合物对砂土强度影响的研究

    BIOPOLYMER EFFECT ON SANDY SOIL STRENGTH

    • 摘要: 传统土体加固技术的缺陷带来严重环境污染问题,阻碍我国资源节约型和环境友好型社会的建设和发展进程。论文采用生态环保的有机材料——生物聚合物作为固土添加剂,讨论其在不同养护时间下对砂土无侧限抗压强度与剪切强度的影响。研究结果表明:黄原胶生物聚合物处理过的砂土,随着养护时间的增大,其无侧限抗压强度和抗剪强度都得到了显著提升;黄原胶的加入使得土体间的黏聚力有了显著提高,进而增大了土体的强度;通过扫描电镜观测图片可发现黄原胶生物聚合物吸附并聚集在砂土颗粒周围,将单个的土颗粒连接在一起,由离散的颗粒聚集在一起形成较大的团聚体,起到改变土体结构的作用。黄原胶生物聚合物作为一种生态环保的绿色有机材料,能显著提高土体的强度,展示了其在岩土工程中应用的强大潜力,值得对其做进一步的研究与改进。

       

      Abstract: Traditional soil stabilization method causes serious pollution problem which hinder the development of environment-friendly society in China. This research uses environment-friendly material biopolymer as an additive to explore its effect on soil unconfined compressive strength and shear strength after different curing time. Results indicate:with the increase of curing time, the unconfined compressive strength and shear strength of sand treated with xanthan gum biopolymer improved significantly; the addition of xanthan gum increased the soil cohesion to increase soil strength; it can be found by scanning electron microscope observation images that xanthan gum biopolymer aggregated around sand particles, connecting individual soil particles together, and forming larger aggregates from discrete particles, which plays a role in changing soil structure. The environment-friendly green organic material xanthan gum biopolymer can significantly improve the strength of soil, showing its potential in geotechnical engineering applications.

       

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