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| 1 | 基于微生物诱导碳酸钙沉淀技术加固滨海软土的试验研究显示文摘为有效利用微生物诱导碳酸钙沉淀(MICP)技术加固滨海软土,以养护时间、营养液浓度、菌液浓度为影响因素,以抗剪强度、含水率和干密度为指标,进行MICP技术加固软土性能的实验研究.结果表明:MICP技术适用于处理滨海软土,可以显著提升软土的物理性质、提高软土强度.仅作用三天,可提高抗剪强度超过两倍,合理的养护天数、营养液浓度、菌液浓度等组合因素对加固性能也有直接影响.相关机理性的研究结果为滨海软土地基处理提供了一个全新的技术手段. | 蚁曼冰 王延宁 刘东 Ankit Garg 林鹏 | 2020 | 汕头大学学报(自然科学版)2020，35，3： | 2 |
| 2 | Editorial for Internet of Things (IoT) and Artificial Intelligence (AI) in geotechnical engineering显示文摘We are privileged to be invited by the Honorary Editor-in-Chief,Professor Qihu Qian,Editor-in-Chief,Professor Xia-Ting Feng,and the editorial staff of the Journal of Rock Mechanics and Geotechnical Engineering(JRMGE),to serve as Guest Editors for this Special Issue(SI).Over the last decade,the application of the Internet of Things(IoT)and Artificial Intelligence(AI)has increased rapidly to enhance automation in various industries.For efficient construction and maintenance of geotechnical infrastructures(slopes,tunnels,pipelines,and other ground infrastructures),there is a need to access and examine measured data in real-time.Variations in data type due to the usage of unmanned aerial vehicle(UAV)photogrammetric sensors,LiDAR,and fiber optic sensing techniques make data management and analysis more complicated.Advanced artificial intelligence,metaheuristic optimization,and data science can be reliable methods in geotechnical engineering for site investigation,risk assessment,design,construction,and maintenance at a higher level. | Honghu Zhu Ankit Garg Xiong(Bill)Yu Hannah Wanhuan Zhou | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，4： | 2 |
| 3 | Influence of soil density on gas permeability and water retention in soils amended with in-house produced biochar显示文摘Biochar has been used as an environment-friendly enhancer to improve the hydraulic properties(e.g.suction and water retention)of soil.However,variations in densities alter the properties of the soil ebiochar mix.Such density variations are observed in agriculture(loosely compacted)and engineering(densely compacted)applications.The influence of biochar amendment on gas permeability of soil has been barely investigated,especially for soil with different densities.The major objective of this study is to investigate the water retention capacity,and gas permeability of biochar-amended soil(BAS)with different biochar contents under varying degree of compaction(DOC)conditions.In-house produced novel biochar was mixed with the soil at different amendment rates(i.e.biochar contents of 0%,5%and 10%).All BAS samples were compacted at three DOCs(65%,80%and 95%)in polyvinyl chloride(PVC)tubes.Each soil column was subjected to dryingewetting cycles,during which soil suction,water content,and gas permeability were measured.A simplified theoretical framework for estimating the void ratio of BAS was proposed.The experimental results reveal that the addition of biochar significantly decreased gas permeability kg as compared with that of bare soil(BS).However,the addition of 5%biochar is found to be optimum in decreasing kg with an increase of DOC(i.e.k_(g,65%)>k_(g,80%)>k_(g,95%))at a relatively low suction range(<200 kPa)because both biochar and compaction treatment reduce the connected pores. | Ankit Garg He Huang Weiling Cai Narala Gangadhara Reddy Peinan Chen Yifan Han Viroon Kamchoom Shubham Gaurav Hong-Hu Zhu | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，3： | 1 |
| 4 | Predictors of Early, Late, and Very Late Stent Thrombosis After Primary Percutaneous Coronary Intervention With Bare-Metal and Drug-Eluting Stents for ST-Segment Elevation Myocardial Infarction显示文摘 | Bruce Brodie Yashashwi Pokharel Ankit Garg Grace Kissling Charles Hansen Sally Milks Michael Cooper Christopher McAlhany Tom Stuckey | 2012 | JACC: Cardiovascular Interventions2012，，10： | 1 |
| 5 | Estimation of factor of safety of rooted slope using an evolutionary approach显示文摘 | Akhil Garg Ankit Garg K. Tai S. Sreedeep | 2014 | Ecological Engineering2014，，： | 1 |
| 6 | A 3-approximation algorithm for the facility location problem with uniform capacities显示文摘 | Ankit Aggarwal Anand Louis Manisha Bansal Naveen Garg Neelima Gupta Shubham Gupta Surabhi Jain | 2013 | Mathematical Programming (-)2013，，1： | 1 |
| 7 | Experimental study on mitigating wind erosion of calcareous desert sand using spray method for microbially induced calcium carbonate precipitation显示文摘Wind erosion is one of the significant natural calamities worldwide, which degrades around one-third of global land. The eroded and suspended soil particles in the environment may cause health hazards, i.e.allergies and respiratory diseases, due to the presence of harmful contaminants, bacteria, and pollens.The present study evaluates the feasibility of microbially induced calcium carbonate precipitation(MICP)technique to mitigate wind-induced erosion of calcareous desert sand(Thar desert of Rajasthan province in India). The temperature during biotreatment was kept at 36℃ to stimulate the average temperature of the Thar desert. The spray method was used for bioaugmentation of Sporosarcina(S.) pasteurii and further treatment using chemical solutions. The chemical solution of 0.25 pore volume was sprayed continuously up to 5 d, 10 d, 15 d, and 20 d, using two different concentration ratios of urea and calcium chloride dihydrate viz 2:1 and 1:1. The biotreated samples were subjected to erosion testing(in the wind tunnel) at different wind speeds of 10 m/s, 20 m/s, and 30 m/s. The unconfined compressive strength of the biocemented crust was measured using a pocket penetrometer. The variation in calcite precipitation and microstructure(including the presence of crystalline minerals) of untreated as well as biotreated sand samples were determined through calcimeter, scanning electron microscope(SEM), and energydispersive X-ray spectroscope(EDX). The results demonstrated that the erosion of untreated sand increases with an increase in wind speeds. When compared to untreated sand, a lower erosion was observed in all biocemented sand samples, irrespective of treatment condition and wind speed. It was observed that the sample treated with 1:1 cementation solution for up to 5 d, was found to effectively resist erosion at a wind speed of 10 m/s. Moreover, a significant erosion resistance was ascertained in15 d and 20 d treated samples at higher wind speeds. The calcite content percentage, thickness of crust,bulk density, and surface strength of biocemented sand were enhanced with the increase in treatment duration. The 1:1 concentration ratio of cementation solution was found effective in improving crust thickness and surface strength as compared to 2:1 concentration ratio of cementation solution. The calcite crystals formation was observed in SEM analysis and calcium peaks were observed in EDX analysis for biotreated sand. | Monika Dagliya Neelima Satyam Meghna Sharma Ankit Garg | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，5： | 1 |
| 8 | 基于MICP技术对污染淤泥质土净化修复作用的研究分析显示文摘本文针对重金属污染的淤泥质土展开了净化修复作用研究.通过微生物诱导碳酸钙沉积(MICP)技术,利用巴氏芽孢杆菌自身脲酶水解尿素产生碳酸根离子,与淤泥质土体中重金属离子生成沉淀,探究淤泥质土体中不同重金属离子、不同老化期的净化修复效率.研究表明,污染淤泥质土在MICP作用下净化修复都很显著,基本净化效率达到了80%.对于不同重金属离子、混合污染程度及老化期,固定效率有所差异. | 周威 刘冬 王延宁 Ankit Garg 林鹏 | 2020 | 汕头大学学报(自然科学版)2020，35，4： | 1 |
| 9 | Virtual Design Optimiza- tion of Thermoplastic Steering Wheel 显示文摘 | Subrata Nayak Ankit Garg SM Kumar | 2011 | SAE Paper2011，，： | 1 |
| 10 | Estimation of factor of safety of rooted slope using an evolutionary approach显示文摘 | Akhil Garg Ankit Garg K Tai | 2014 | Eco- logical Engineering2014，64，： | 1 |
| 11 | Analgesic, anti-inflammatory, antipyretic and toxicological evaluation of some newer 3-methyl pyrazolone derivatives显示文摘 | G. Mariappan B.P. Saha L. Sutharson Ankit Singh S. Garg L. Pandey Deepak Kumar | 2011 | Saudi Pharmaceutical Journal2011，，2： | 1 |
| 12 | Effect of biochar type on infiltration,water retention and desiccation crack potential of a silty sand显示文摘Biochar is a carbon-rich material obtained after thermochemical conversion of biomass under no oxygen environment.The effect of biochar amendment on soil properties,such as water retention,infiltration and desiccation crack potential was studied in the recent years.However,the effect of biochar or feedstock type on these properties is not explicit.This study investigates the effect of two different(in terms of feedstock)types of biochar on the water retention,infiltration and desiccation crack-ing behavior of compacted silty sand.Water retention characteristics,infiltration rate and the progression of desiccation cracks were measured after compacting soil amended with 5-10%(w/w)biochar produced from water hyacinth(WHB)and mesquite.Measurements were also taken for an unpyrolyzed material coir pith(CP,sourced from coconut husk)-amended soil for comparing the results of biochar-amended soil.The results show that the amendment of 5%to 10%biochar increased the maximum water holding capacity(θs),air entry value(AEV)and water content at 1500 kPa(θ1500)of the soil,whereas decreased the infiltration rate and peak crack intensity factor(CIF)of the soil.Moreover,the application of CP increased the infiltration rate.The amendment of WHB showed the highest increment in AEV andθ1500 and the highest decrement in infiltration rate and CIF compared to the other amendments.Based on the results,it is advisable to use the WHB-amended soil in bioengineered structures that could promote the growth of vegetation by higher water retention and could reduce the potential of leachate formation by decreasing water infiltration and desiccation crack potential. | Rojimul Hussain Sanandam Bordoloi Piyush gupta Ankit Garg K.Ravi S.Sreedeep Lingaraj Sahoo | 2020 | Biochar2020，2，4： | 1 |
| 13 | Exploring the combination of biochar‐amended soil and automated irrigation technology for water regulation and preservation in green infrastructure显示文摘Biochar is a carbon sink material with the potential to improve water retention in various soils.However,for the long‐term maintenance of green infrastructure,there is an additional need to regulate the water contents in the covers to maintain vegetation growth in semiarid conditions.In this study,biochar‐amended soil was combined with subsurface drip irrigation,and the water preservation characteristics of this treatment were investigated through a series of one‐dimensional soil column tests.To ascertain the best treatment method specific to semiarid climatic conditions,the test soil was amended with 0%,1%,3%,and 5%biochar.Automatic irrigation devices equipped with soil moisture sensors were used to control the subsurface water content with the aim of enhancing vegetation growth.Each soil column test lasted 150 h,during which the volumetric water contents and soil suction data were recorded.The experimental results reveal that the soil specimen amended with 3%biochar is the most water‐saving regardless of the time cost.Soil with a higher biochar content(e.g.,5%)consumes a more significant amount of water due to the enhancement of the water‐holding capacity.Based on the experimental results,it can be concluded that the appropriate ratio can be determined within 1%–3%,which can reduce not only the amount of irrigated/used water but also the time cost.Such technology can be explored for water content regulation in green infrastructure and the development of barriers for protecting the environment around deep underground waste containment. | Honghu Zhu Yuanxu Huang Haihong Song Jian Chen Songlei Han Tanwee Mazumder Ankit Garg | 2024 | Deep Underground Science and Engineering2024，3，1： | 0 |
| 14 | Dynamic performance of submerged floating tunnel with different mooring styles subjected to anchor cable failure显示文摘Submerged floating tunnels(SFTs)are novel structures for transportation across long-and deep-strait regions.Owing to severe wave and current excitation as well as the effects of underwater structures and corrosion,the risk of local anchor cable failure is high,which can result in the progressive failure of the entire structure.In this study,experimental and numerical investigations are conducted to analyze the dynamic behavior of an SFT with different mooring styles under local cable failure.A custom-designed cable failure device and the birth-and-death element method are used to simulate cable failure(i.e.,progressive failure)via experiments and numerical simulation,respectively.A physical-scale segmental model of an SFT with different mooring styles under anchor cable failure is developed in this study.A segmental and entire-length mathematical model is developed using the ANSYS program to perform the numerical simulation.The results of the segmental numerical and experimental models indicate good agreement.The dynamic response of an SFT with different mooring styles under cable failure is comprehensively investigated by investigating the effects of key parameters(wave period,buoyant weight ratio,and cable failure mechanism).Moreover,the progressive failure of the SFT under cable failure is investigated via a segment model test and a numerical simulation of its entire length.The present study can serve as a reference for the safer designs of the SFT mooring style. | Zhiwen WU Chuhan ZHANG Liwang MOU Guoxiong MEI Ankit GARG | 2023 | Frontiers of Structural and Civil Engineering2023，17，10： | 0 |
| 15 | Optimization of growth medium for microbially induced calcium carbonate precipitation(MICP) treatment of desert sand显示文摘Wind-induced sand erosion is a natural process, and can have several negative impacts on human health, environment, and economy. To mitigate the wind-induced sand erosion, an environmental friendly technique that helps to bind soil particles is desirable. The microbially induced calcium carbonate precipitation(MICP) treatment has lately become renowned and a viable alternative to enhance the binding of sand particles(especially against wind erosion). The efficiency of Sporosarcina pasteurii bacteria in inducing calcite formation can be influenced by various factors, including the type of growth media used for bacterial culture. Most of the studies have mainly validated the efficiency of S. pasteurii bacteria usually under single growth media for the MICP treatment. However, the efficiency of S. pasteurii under different growth media on calcite formation is rarely explored. The current study explores the effect of S.pasteurii bacteria on calcite formation under the presence of three different growth media, namely,molasses(MS), tryptic soy broth(TB), and nutrient broth(NB). The three growth media have been applied in the laboratory with and without bacterial solution(control samples). Altered cementation media concentrations(0.5 and 1.0 M) with different pore volumes(PVs), namely, 0.25, 0.50, and 1.00 PV were used in sand-filled tubes for 7 and 14 treatment cycles(1 cycle=24 h). The pH and EC were measured for 12-h period in every 2 h interval, to monitor values at the time of treatment at room temperature. The calcite precipitation was confirmed using SEM(scanning electron microscope), PXRD(powder X-ray diffraction), and calcimeter tests. It was observed that MS generates lower calcite precipitation as compared with NB and TB. However, MS has the advantage of being more economical and abundant(waste product from sugar mills and refineries) as compared with other growth media(NB and TB). It was observed that the minimum and the maximum calcite precipitation using MS is 5% and 12%, respectively.The findings using MS in the present study was compared with the literature and found that precipitation of calcite using MS is effective to stabilize soil against wind erosion. | Monika DAGLIYA Neelima SATYAM Ankit GARG | 2023 | Journal of Arid Land2023，15，7： | 0 |
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