[1]尤浩,王伟岩,陶元洪,等.微生物胶结橡胶土性能试验研究[J].华南地震,2021,41(03):26-32.[doi:10.13512/j.hndz.2021.03.04 ]
　YOU Hao,WANG Weiyan,TAO Yuanhong,et al.Experimental Research on Performance of Microbial Cementation Rubber Soil Experimental Study on the Properties of Microbial Cemented Rubber Soil[J].,2021,41(03):26-32.[doi:10.13512/j.hndz.2021.03.04 ]
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微生物胶结橡胶土性能试验研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年03期
页码:
26-32
栏目:
土木工程防震减灾
出版日期:
2021-09-20

文章信息/Info

Title:
Experimental Research on Performance of Microbial Cementation Rubber Soil Experimental Study on the Properties of Microbial Cemented Rubber Soil
文章编号:
1001-8662(2021)03-0026-07
作者:
尤浩 1; 王伟岩 1; 陶元洪 1; 李沛 2; 周启文 3
(1.中交第一航务工程局有限公司,天津 300461;2.中交天津港湾工程研究院股份有限公司,天津 300222;3.中南大学资源与安全工程学院,长沙 410083)
Author(s):
YOU Hao1; WANG Weiyan1; TAO Yuanhong1; LI Pei2; ZHOU Qiwen3
(1. CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;2. CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;3. School of Resources and Safety Engineering of Central South University,Changsha 410083,China)
关键词:
橡胶粉末;  MICP; 减震; 单轴抗压强度; 滞回曲线; 微观结构
Keywords:
Rubber Powder; MICP; Shock Absorption; Hysteretic Curve; Microstructure
分类号:
TU352.1
DOI:
10.13512/j.hndz.2021.03.04
文献标志码:
A
摘要:
橡胶土都是一种常用的减震材料,但是强度较低?采用 MICP技术胶结掺入 3%以内的橡胶粉末砂土,试验研究了微生物胶结后橡胶砂土单轴抗压强度?循环加卸载作用特性及其微观结构?研究表明微生物胶结后横波波速和试样密度随橡胶含量增加而增加,其单轴抗压强度变化不大,受橡胶含量影响较小?随加卸载循环次数增加,微生物胶结橡胶粉末砂土阻尼比和滞回环面积逐渐减小,但是其刚度变化较小?相同加卸载循环次数条件下,微生物胶结橡胶粉末砂土阻尼比?滞回曲线面积及其刚度随橡胶粉末含量增加而增加?在微生物胶结橡胶粉末砂土中砂土胶结颗粒间,橡胶粉末与碳酸钙晶体形成了具有一定微观强度的蜂窝孔状结构,有利于缓冲砂颗粒在外界动荷载作用的位置变动,吸收砂颗粒传递过来的能量,从而起到减震作用?
Abstract:
Rubber soil is a kind of common damping material,but its strength is low. By using MICP technology to cement sand with less than 3% rubber powder,the paper experimentally studies the uniaxial compressive strength,cyclic loading and unloading characteristics and microstructure of rubber sand after microbial cementation. Theresults show that after microbial cementation,the shear wave velocity and sample density increase with the increase of rubber content,and its uniaxial compressive strength does not change much,which is less affected by the rubber content. With the increase of the number of loading and unloading,the damping ratio and the loop area of hysteresis of the microbial cemented rubber powder sand gradually decrease,but the stiffness change is small. Under the same loading and unloading cycles,the damping ratio,the area of hysteresis loop and the stiffness ofmicrobial cemented rubber sand increases with the increase of the content of rubber powder. Among the sandcemented particles in the microbial cemented rubber powder sand,the rubber powder and calcium carbonate crystal form a honeycomb structure with certain micro-strength,which is beneficial to buffer the position change ofthe sand particles under the external dynamic load and absorb the energy transferred from the sand particles,and thus play a shock absorption effect.

参考文献/References:

[1]蒋鞠慧,尹冬梅,张雄军,等 .阻尼材料的研究状况及进展 [J].玻璃钢 /复合材料,2010(4):76-80 [2]郭建华,曾幸荣,罗权焜 .橡胶阻尼减震材料的研究进展 [J].特种橡胶制品,2012(6):68-73 [3]Yadav J S,Tiwari S K. Evaluation of the strength charac­teristics of cement-stabilized clay-crumb rubber mixturesfor its sustainable use in geotechnical applications[J]. Environment,Development and Sustainability,2017,DOI:10.1007/s10668-017-9972-2. [4]J.S. Yadav,S.K. Tiwari. Effect of waste rubber fibres on the geotechnical properties of clay stabilized with cement[J].Applied Clay Science,2017,149(dec):97-110. [5]J.S. Yadav,S.K. Tiwari. A study on the potential utilizationof crumb rubber in cement treated soft clay[J]. Journal ofBuilding Engineering,2019(9):177-191. [6]钱春香,王安辉,王欣 .微生物灌浆加固土体研究进展 [J].岩土力学,2015,36(6):1537-1548. [7]Dejong J T,Fritzges M B,Nüsslein K. Microbially InducedCementation to Control Sand Response to Undrained Shear[J]. Journal of Geotechnical &Geoenvironmental Engineer­ing,2006,132(11):1381-1392. [8]Paassen L A V,Ghose R,Linden T J M V D,et al. Quantifying bio-mediated ground improvement by ureol-ysis:a large scale biogrout experiment[J]. Journal of Geote­chnical &Geoenvironmental Engineering,2010,136(12): 1721-1728. [9]刘璐,沈扬,刘汉龙,等 .微生物胶结在防治堤坝破坏中的应用研究 [J].岩土力学,2016,37(12):3410-3416. [10]Li Duo,TianKan-liang,ZhangHui-li,et al. Experi­mental investigation of solidifying desert aeolian sandusing microbially induced calcite precipitation[J]. Construction and Building Materials,2018(172):251-262. [11]刘汉龙,肖鹏,肖杨,等 . MICP胶结钙质砂动力特性试验研究 [J].岩土工程学报,2018,40(1):38-45. [12]赵茜 .微生物诱导碳酸钙沉淀(MICP)固化土壤实验研究[D].北京:中国地质大学(北京),2014. [13]许江,杨秀贵,王鸿,等 .周期性载荷作用下岩石滞回曲线的演化规律 [J].西南交通大学学报,2005,40(6):754-758.

备注/Memo

备注/Memo:
收稿日期:2020-12-16
基金项目:国家自然科学基金项目(51508579,51674287)
作者简介:尤浩(1983-),男,高级工程师,主要从事铁路工程施工研究? E-mail:179505688@qq.com.

更新日期/Last Update: 2021-09-30