[1]冯 忞,诸兆益,钱振豪.橡胶颗粒掺量对橡胶黏土剪切特性的影响[J].华南地震,2023,(01):29-36.[doi:10.13512/j.hndz.2023.01.04]
　FENG Wen,ZHU Zhaoyi,QIAN Zhenhao.Influence of Rubber Particle Content on Shear Properties of Rubber-clay Mixtures[J].,2023,(01):29-36.[doi:10.13512/j.hndz.2023.01.04]
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橡胶颗粒掺量对橡胶黏土剪切特性的影响()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年01期
页码:
29-36
栏目:
土木工程防震减灾
出版日期:
2023-03-20

文章信息/Info

Title:
Influence of Rubber Particle Content on Shear Properties of Rubber-clay Mixtures
文章编号:
1001-8662（2023）01-0029-08
作者:
冯 忞1; 诸兆益1; 钱振豪2
1.上海浦东建筑设计研究院有限公司，上海 201206;2.上海大学力学与工程科学学院，上海 200444
Author(s):
FENG Wen1; ZHU Zhaoyi1; QIAN Zhenhao2
1.Shanghai Pudong Architectural Design and Research Institute Co.，Ltd.，Shanghai 201206，China;2.College of Mechanics and Engineering Science ， Shanghai University ， Shanghai 200444， China
关键词:
混合土; 橡胶颗粒掺量; 剪切速率; 剪切特性
Keywords:
Mixed soil; Rubber particle content; Shear rate; Shear properties
分类号:
TU41
DOI:
10.13512/j.hndz.2023.01.04
文献标志码:
A
摘要:
废旧轮胎制成的橡胶颗粒与黏土混合形成的混合土能利用于路基、填土等工程领域，能够改善黏土的力学性能。通过气动直剪仪对不同橡胶掺量（0、5%、10%和20%）下混合土的剪切特性进行一系列的研究，同时考虑不同剪切速率（0.5、1.0、2.0mm/min）和竖向应力（30、60、90kPa）的影响，探讨混合土的强度变化规律。试验结果表明：混合土的抗剪强度随着橡胶掺量的增加先增大后减少，在橡胶掺量为5%时取最大值；混合土的抗剪强度随着剪切速率的增大而减小，剪切速率对混合土抗剪强度的影响随着竖向应力的增加而减小；在竖向应力为30kPa作用下，混合土呈先剪缩后剪胀的特性，其余条件下混合土均呈剪缩特性；加入橡胶颗粒会降低混合土的黏聚力，橡胶掺量越大，黏聚力下降越大，黏土中掺入橡胶颗粒会增加混合土的界面摩擦角，5%掺量下提高最明显。
Abstract:
The rubber particles made from waste tires and clay form a mixture that can be utilized in roadbed， filling and other engineering fields， which can improve the mechanical properties of the clay mixture. A series of studies on the shear properties of the soil mixture with different rubber content（0，5%， 10% and 20%）were conducted by pneumatic direct shear apparatus，and the influence of different shear rates（0.5，1.0，2.0 mm/min） and vertical stresses（30，60，90 kPa）were also considered to explore the strength change law of the soil mixture. The test results show that the shear strength of the soil mixture increases first and then decreases with the increase of the rubber content，and the maximum value is reached at 5% of the rubber content. The shear strength of the soil mixture decreases with the increase of the shear rate， and the influence of the shear rate on the shear strength of the soil mixture decreases with the increase of the vertical stress. Under the vertical stress of 30 kPa， the soil mixture shows the characteristic of shear contraction and then shear dilation，and under the other conditions，the soil mixture shows the characteristic of shear contraction. The addition of rubber particles will reduce the cohesion of the soil mixture. The greater the rubber content， the greater the decrease of cohesion. The mixture of rubber particles in clay will increase the interfacial friction angle，and the increase is most obvious at 5%.

参考文献/References:

[1] Thomas B S，Gupta R C. Long term behaviour of cement concrete containing discarded tire rubber[J]. Journal of Cleaner Production，2015（102）：78-87.
[2] Morales E，Filiatrault A，Aref A. Seismic floor isolation using recycled tires for essential buildings in developing countries [J]. Bulletin of Earthquake Engineering，2018，16（12）：6299-6333.
[3] Tafreshi S，Mehrjardi G T，Dawson A R. Buried pipes in rubber-soil backfilled trenches under cyclic loading[J]. Journal of Geotechnical and Geoenvironmental Engineering， 2012，138（11）：1346-1356.
[4] Li Y，Zhang X，Wang R J，et al. Performance enhancement of rubberised concrete via surface modification of rubber：a review[J]. Construction and Building Materials，2019，227：116691. 10.1016/j.conbuildmat.2019.116691
[5] Liu L L，Cai G Q，Zhang J，et al. Evaluation of engineering properties and environmental effect of recycled waste tire-sand/soil in geotechnical engineering：a compressive review [J]. Renewable and Sustainable Energy Reviews，2020（12）：109831
[6] Prabhakara B K K，Balunaini U，Guda P V. Optimum mixing ratio and shear strength of granulated rubber-fly ash mixtures [J]. Journal of Materials in Civil Engineering，2020，32（7）：07020005.
[7] Yang Z N，Qi Z，Wei S，et al. Advances in properties of rubber reinforced soil[J]. Advances in Civil Engineering， 2020（10）：1-16. 10.1155/2020/6629757
[8] Signes C H，Garzón-Roca J，Fernández P M，et al. Swelling potential reduction of Spanish argillaceous marlstone Facies Tap soil through the addition of crumb rubber particles from scrap tyres[J]. Applied Clay Science，2016（132/133）：768-773.
[9] Cetin H，Fener M，Gunaydin O. Geotechnical properties of tire-cohesive clayey soil mixtures as a fill material[J]. Engineering Geology，2006，88（1）：110-120.
[10]侯恒军，薛凯喜，胡艳香，等.橡胶粉改良非饱和黏土体直剪试验研究[J].科学技术与工程，2017，17（03）：293-297.
[11] Akbarimehr A，Eslami A，Aflaki E. Geotechnical behaviour of clay soil mixed with rubber waste[J]. Journal of Cleaner Production，2020，271（1）：122362. 10.1016/j.jclepro. 2020.122632
[12]魏子扬，黄质宏，穆锐，等.利用废旧胶粉改善红黏土工程性质试验研究[J].长江科学院院报，2020，37（08）：95-100+112.
[13] Tabrizi M K，Abrishami S，Hosseininia E S，et al. Experimental investigation on the behavior of fine-grained soils containing waste rubber tires under repeated and static loading using direct shear apparatus[J]. Construction and Building Materials，2019（223）：106-119.
[14]李珊珊，李大勇.橡胶颗粒—黏土的剪切及固结试验研究[J].长江科学院院报，2021，38（01）：95-102.
[15] Soltani A，Deng A，Taheri A，et al. Interfacial shear strength of rubber-reinforced clays：a dimensional analysis pers-pective[J]. Geosynthetics International，2018，26（2）：1-50.
[16]何俊，李勇，阮晓晨.废旧轮胎胶粉—黏土混合土的强度性质[J].岩石力学与工程学报，2015，34（S2）：4366-4372.
[17]刘飞禹，朱晨，王军.剪切速率和法向加载频率对筋土界面剪切特性的影响[J]. 岩土工程学报，2021，43（05）：832-840.
[18] Madhusudhan B R，Boominathan A，Banerjee S. Static and large-strain dynamic properties of sand-rubber tire shred mixtures[J]. Journal of Materials in Civil Engineering， 2017，29（10）：04017165. 10.1061/（ASCE）MT. 1943-5533.000-2016
[19]熊甜甜，廖红建，杨博，等.加筋土筋土界面抗剪强度影响因素试验研究[J]. 地下空间与工程学报，2018，14 （03）：629-634.
[20]卢震，陈开圣.橡胶黏土混合土动剪切模量及阻尼比试验研究[J].防灾减灾工程学报，2019，39（02）：250-257.
[21] 中华人民国和国建设部. 土工试验方法标准：GB/T 50123—1999[S]. 北京：中国计划出版社，1999．

备注/Memo

备注/Memo:
收稿日期：2022-06-10
基金项目：国家自然科学基金项目（51678352）
作者简介：冯忞（1985-），女，高级工程师，主要从事道路与交通工程专业工作。E-mail: 272418264@qq.com

更新日期/Last Update: 2023-03-20