Electrokinetic (EK) treatment is a possible attractive way to speed up the consolidation of fine-grained dredged sediments. The effectiveness of this method depends on the complex physical–chemical interaction between soil particles, interstitial fluid and pollutants. This paper presents the experimental laboratory results obtained by inducing mechanical and EK consolidation in a fine-grained dredged material. Then, a finite-difference numerical code implemented by the authors able to solve the large and small strain consolidation equations (Lassec1), including the electro-osmotic flow, is described along with the theoretical simplifications adopted and the calibration procedure required. The experimental results have been numerically simulated, showing the ability of Lassec1 to reproduce the coupled mechanical and electrical consolidation processes, highlighting that under very low stress levels it is necessary to take into account the highly non-linear soil behaviour, and thus the large strain theory is...
{"title":"Analysis of the coupled electro-osmotic and mechanical consolidation in clayey soils","authors":"S. Gargano, S. Lirer, A. Flora","doi":"10.1680/JGRIM.18.00010","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00010","url":null,"abstract":"Electrokinetic (EK) treatment is a possible attractive way to speed up the consolidation of fine-grained dredged sediments. The effectiveness of this method depends on the complex physical–chemical interaction between soil particles, interstitial fluid and pollutants. This paper presents the experimental laboratory results obtained by inducing mechanical and EK consolidation in a fine-grained dredged material. Then, a finite-difference numerical code implemented by the authors able to solve the large and small strain consolidation equations (Lassec1), including the electro-osmotic flow, is described along with the theoretical simplifications adopted and the calibration procedure required. The experimental results have been numerically simulated, showing the ability of Lassec1 to reproduce the coupled mechanical and electrical consolidation processes, highlighting that under very low stress levels it is necessary to take into account the highly non-linear soil behaviour, and thus the large strain theory is...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"15 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90553955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The performance of soft soil subjected to underwater vacuum preloading was explored using geotechnical centrifuge model tests at different g-levels. A vacuum generator system was developed in a cen...
{"title":"Centrifuge modelling on soft soil subjected to underwater vacuum preloading","authors":"Liwen Hu, Yongping Wang, Zhijun Liu","doi":"10.1680/JGRIM.18.00011","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00011","url":null,"abstract":"The performance of soft soil subjected to underwater vacuum preloading was explored using geotechnical centrifuge model tests at different g-levels. A vacuum generator system was developed in a cen...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"89 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78977403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper describes an experimental investigation carried out to study the load−settlement behaviour and bulge characteristics of granular columns in a soft marine clay bed. The effects of gradati...
本文描述了一项研究海洋软粘土层中颗粒柱的荷载沉降行为和膨胀特性的实验研究。渐变的影响……
{"title":"Effect of fill properties on load−settlement behaviour of granular columns in marine clays","authors":"B. Phanikumar, R. Babu, S. N. Rao","doi":"10.1680/JGRIM.18.00077","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00077","url":null,"abstract":"This paper describes an experimental investigation carried out to study the load−settlement behaviour and bulge characteristics of granular columns in a soft marine clay bed. The effects of gradati...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"75 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80069365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Phayao Lake, the largest lake in the north of Thailand, supplies water for consumption and irrigation in the region. Currently, the lake is faced with serious problems as it is becoming shallow wit...
{"title":"Cement-improved lake bed sedimentary soil for road construction","authors":"T. Chompoorat, Thacchai Maikhun, S. Likitlersuang","doi":"10.1680/JGRIM.18.00076","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00076","url":null,"abstract":"Phayao Lake, the largest lake in the north of Thailand, supplies water for consumption and irrigation in the region. Currently, the lake is faced with serious problems as it is becoming shallow wit...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"602 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75394492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saturated soft clay subgrade in Wenzhou was reinforced by a combination of vacuum preloading and surcharge preloading using different loading materials. Using the principle of similarity, embankmen...
{"title":"Vibration propagation of subgrade built on treated dredged fill","authors":"G. Ding, Fan Sun, Pengyan Dai","doi":"10.1680/JGRIM.18.00018","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00018","url":null,"abstract":"Saturated soft clay subgrade in Wenzhou was reinforced by a combination of vacuum preloading and surcharge preloading using different loading materials. Using the principle of similarity, embankmen...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"28 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80359462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Temperature has an important effect on the consolidation of soft soil. Considering current experimental data, a compression model for soft soil considering the influence of temperature is discussed...
温度对软土的固结有重要影响。结合现有实验数据，讨论了考虑温度影响的软土压缩模型。
{"title":"One-dimensional non-linear consolidation theory of soft ground coupled with thermal effect","authors":"Liu Quan, Yue-bao Deng, Fei Chen","doi":"10.1680/JGRIM.18.00012","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00012","url":null,"abstract":"Temperature has an important effect on the consolidation of soft soil. Considering current experimental data, a compression model for soft soil considering the influence of temperature is discussed...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"142 6 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86906056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, a sustainable approach for reducing lateral displacement in a track by increasing the confining pressure in the track substructure is demonstrated by placing a cellular rubber (tyre)...
本文介绍了一种通过在轨道下部结构中放置多孔橡胶(轮胎)来增加围压以减少轨道横向位移的可持续方法。
{"title":"Behaviour of a capping layer reinforced with recycled tyres","authors":"Qideng Sun, B. Indraratna, A. Heitor","doi":"10.1680/JGRIM.18.00030","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00030","url":null,"abstract":"In this paper, a sustainable approach for reducing lateral displacement in a track by increasing the confining pressure in the track substructure is demonstrated by placing a cellular rubber (tyre)...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"55 4 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88474104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peat generally found in thick layers in limited areas such as Urmia Lake, Iran has low shear strength and high compressive deformation. Therefore, an appropriate soil improvement method is required...
{"title":"Stabilisation of Urmia Lake peat using natural and artificial pozzolans","authors":"H. Bahadori, A. Hasheminezhad, Saeid Mohamadi asl","doi":"10.1680/JGRIM.19.00024","DOIUrl":"https://doi.org/10.1680/JGRIM.19.00024","url":null,"abstract":"Peat generally found in thick layers in limited areas such as Urmia Lake, Iran has low shear strength and high compressive deformation. Therefore, an appropriate soil improvement method is required...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"7 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84193695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Volumetric changes in expansive soils due to seasonal moisture changes can seriously damage foundations. In the small-scale laboratory study reported in this paper, the effect of inserting columns ...
膨胀土的体积变化由于季节性的湿度变化会严重破坏地基。在本文报道的小规模实验室研究中，插入柱的影响…
{"title":"Small-scale laboratory test on expansive soil stabilized by CCR-Fly ash columns","authors":"F. Darikandeh, B. Viswanadham, M. Arabani","doi":"10.1680/JGRIM.18.00002","DOIUrl":"https://doi.org/10.1680/JGRIM.18.00002","url":null,"abstract":"Volumetric changes in expansive soils due to seasonal moisture changes can seriously damage foundations. In the small-scale laboratory study reported in this paper, the effect of inserting columns ...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"2014 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88106150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, an experimental study has been carried out to investigate the effect of different parameters on the results of dynamic compaction adjacent to slopes. One hundred and eight sloped mod...
本文通过试验研究，探讨了不同参数对临近边坡强夯结果的影响。一百零八个斜坡……
{"title":"Impact of model scale on the results of dynamic compaction adjacent to the sandy slopes","authors":"Ali Mirzamomen, A. Hamidi, A. Ghanbari","doi":"10.1680/JGRIM.17.00022","DOIUrl":"https://doi.org/10.1680/JGRIM.17.00022","url":null,"abstract":"In this paper, an experimental study has been carried out to investigate the effect of different parameters on the results of dynamic compaction adjacent to slopes. One hundred and eight sloped mod...","PeriodicalId":51705,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Ground Improvement","volume":"256 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2019-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73319227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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