Indonesian Geotechnical Journal最新文献

Reinforced Soil Wall Construction with High Stiffness Geocomposite Reinforcement and Betoflor Segmental Block, Pengerang, Johor Darul Ta’zim 采用高刚度土工复合材料加固和 Betoflor 节段式砌块的加固土墙建筑，柔佛州 Pengerang 市

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.50

Kwan Shen Tong, Weng Soon Tan

{"title":"Reinforced Soil Wall Construction with High Stiffness Geocomposite Reinforcement and Betoflor Segmental Block, Pengerang, Johor Darul Ta’zim","authors":"Kwan Shen Tong, Weng Soon Tan","doi":"10.56144/igj.v2i3.50","DOIUrl":"https://doi.org/10.56144/igj.v2i3.50","url":null,"abstract":"Pengerang is a municipality in Kota Tinggi district in Johor at the southern tip of the Peninsular Malaysia. It is home for the mega oil and gas hub Pengerang Integrated Petroleum Complex (PIPC) in Southern Johor state, which is one of the region’s largest hubs for oil and gas, petrochemical industries, oil storage and trading activities. The area is experiencing significant development, both residential and commercial in nature. In this development plan, the retaining wall system plays a crucial role in providing a larger development area, enhancing the aesthetic view, and achieving a higher elevation platform. The focus of this paper is on an internally stabilized reinforced soil wall system which involves reinforcing the soil with high stiffness geocomposite reinforcement and utilizing modular segmental blocks as facing elements. This combination creates a 1 vertical: 0.14 horizontal gradient (82°) wall that is implemented for a mixed development at Pengerang. The single-tier reinforced soil wall reaches a height of 13 m. In addition, the maximum 14 m high wall was designed as a two-tier wall and the maximum 19 m high wall was designed as a three-tier wall. The design of the reinforced soil wall includes the evaluation of various potential internal and external failure modes. This paper also discusses the construction sequences employed for the reinforced soil wall. Ultimately, the combination of the high stiffness geocomposite reinforcement with modular segmental blocks has proven successful, resulting in a constructed wall that satisfied the client requirements","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139141841","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}

引用次数: 0

In-Peat Geomechanical Monitoring Method under Actual Road Embankment 实际路堤下的同位地质力学监测方法

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.64

Alsidqi Hasan, Jeffery Tay, Jye Lee

{"title":"In-Peat Geomechanical Monitoring Method under Actual Road Embankment","authors":"Alsidqi Hasan, Jeffery Tay, Jye Lee","doi":"10.56144/igj.v2i3.64","DOIUrl":"https://doi.org/10.56144/igj.v2i3.64","url":null,"abstract":"This paper presents an ongoing ‘in-peat’ geomechanical monitoring exercise under an actual road embankment that is being constructed in Sarawak State of Malaysia. The road embankment will serve as part of 236km second trunk road, which is expected to be completed in 2 years. It measures about 34m wide and 3m high, overlies 5m thick of peat and a soft clay. In-peat monitoring method uses a technique that can monitor the vertical stress, the horizontal stress, the pore water pressure, and the settlement from within the peat layer. This complete set of data are valuable to back analyze the phenomena takes place during and post construction, using the state-of-the-art concept in soil mechanics. Detail site information, installation method and preliminary data are discussed. The installation exercise has been finished and the in-peat monitoring has been started. A professional service was appointed to install and monitor the sensors, which is supervised by the academic and the department of public works. The in-peat monitoring is a critical milestone to better understand the geomechanical behavior of peat under actual road embankment and to verify the current peat conceptual model.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139137528","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}

引用次数: 0

The Use Of Lightweight Material At Road Access Construction On Slope 在斜坡道路施工中使用轻质材料

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.61

Hansen Tananda, Aris Handoko, Paulus Pramono Rahardjo

{"title":"The Use Of Lightweight Material At Road Access Construction On Slope","authors":"Hansen Tananda, Aris Handoko, Paulus Pramono Rahardjo","doi":"10.56144/igj.v2i3.61","DOIUrl":"https://doi.org/10.56144/igj.v2i3.61","url":null,"abstract":"To achieve the design elevation from the existing ground level, an embankment work with a thickness of 8-10 meters thick on the slope should be conducted considering both the safety aspect as well as the economic aspect. Based on the conceptual drawing by Contractor, the embankment will sit on the slope without any grading works. The drawing shows that the embankment will be constructed directly on the existing slope. Any fill work on the original slope without any proper reinforcement will cause stability issues. The discussion about the embankment area construction concept has come up with some options such as the use of a slab-on-pile system and the use of a combination sheet pile - bore piles and the use of mini piles under the embankment. Based on further discussion with Contractor and Owner about the technical aspect and construction cost required, it is recommended to construct an embankment with lightweight material (geofoam). The use of lightweight geofoam is a suitable solution to be considered. Another advantage of using geofoam is that the construction period is faster than conventional methods. Geofoam installation work already started on November 2022. On February 2023, the geofoam slope construction finished.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139138687","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}

引用次数: 0

Ground Improvement and Monitoring for a Reclamation on Reclaimed Soft Soil in Singapore 新加坡开垦软土的地面改良和监测

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.67

Patrick Mengé, Thomas Vergote, Johny Van Acker, Handojo Ronald Yohanson

{"title":"Ground Improvement and Monitoring for a Reclamation on Reclaimed Soft Soil in Singapore","authors":"Patrick Mengé, Thomas Vergote, Johny Van Acker, Handojo Ronald Yohanson","doi":"10.56144/igj.v2i3.67","DOIUrl":"https://doi.org/10.56144/igj.v2i3.67","url":null,"abstract":"Land reclamation works for land development and harbor construction generally require large amounts of sand. At the same time the dredging of access channels, berth pockets and turning circles for shipping may generate both, ‘suitable’ and ‘unsuitable’ dredged sediments. The definition of suitable in general focusses on well compactable granular material with a low fines content. However, in the present times of environmental awareness and search for sustainable solutions, the offshore dumping and disposing of ‘unsuitable’ fine-grained material is not deemed sustainable anymore. In this paper the Tuas Terminal Phase 1 (TTP1) in Singapore will be discussed. All dredged soft clay and residual soils were used in the reclamation and capped with a layer of limited thickness of clean sand. To achieve the design requirements, ground improvement by means of surcharge with prefabricated vertical drains (PVD’s) was performed. To demonstrate the effectiveness and results of the ground improvement works, extensive monitoring by means of settlement beacons and clusters of extensometers and porewater pressure meters was setup. Even on-site developed ‘floating’ piezometers were developed to monitor the consolidating slurry. The execution of these works required adapted execution and advanced design methods. The design and prediction of the behavior of the sediments during improvement and on the long term was a challenge. The correct prediction of deformations and the level of the soft soil-granular soil interface was important to guarantee the correct sand cap thickness after ground improvement. The long-term behavior after overconsolidation through ground improvement was studied in detail. This has led to the development of a more correct prediction method to estimate the secondary settlements of PVD-improved overconsolidated soft soil. The reclamation of the TTP1 terminal proved to be a success where stringent design requirements were met while re-using ‘unsuitable’ material and minimizing the import of clean sand.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139138731","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}

引用次数: 0

Ground Penetrating Radar Signals, An Efficient Way to Estimate Fouled Ballast 地面穿透雷达信号，估算污损压舱物的有效方法

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.45

Raihan Valentino Jaya Saputra, Chiping Kuo

{"title":"Ground Penetrating Radar Signals, An Efficient Way to Estimate Fouled Ballast","authors":"Raihan Valentino Jaya Saputra, Chiping Kuo","doi":"10.56144/igj.v2i3.45","DOIUrl":"https://doi.org/10.56144/igj.v2i3.45","url":null,"abstract":"Mud pumping is a serious problem in railroad structures. Mud is often found in ballast structures, which can decrease the lifespan of sleepers and rail structures. Currently, the role of ground penetrating radar in investigating ballast condition is more useful than visual inspection. Ground penetrating radar can see the condition inside the ballast with the reflection of high-speed electromagnetic waves. One of the outputs from the ground penetrating radar is the graph of the signal reflection strength. Electromagnetic waves in ground penetrating radar have different reflectance strengths depending on the interfaces between different materials they pass through. For example, water-like material has a stronger signal reflection strength than gravel and soil. There are different colors used to indicate the level of signal reflection strength. Bright colors indicate a stronger level of signal reflection strength compared to dark colors. It has already been found that the dark colors of the scanning results are fouled ballast, respectively. To interpret fouled ballast conditions on the ground penetrating radar output graph, it is necessary to sort out the different colors. Therefore, this study aims to utilize design software to facilitate color selection on the ground penetrating radar output graph and determines the estimation of fouled ballast.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139138739","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}

引用次数: 0

Optimizing the Embankment Fill Reinforcement for Rest Area on the Semarang-Solo Toll Road with Geoframe System 利用 Geoframe 系统优化三宝垄-索洛洛收费公路休息区的路堤填土加固工程

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.52

Nadya Ayu Anindita, Dandung Sri, Raffly Muhammad Darmawan

{"title":"Optimizing the Embankment Fill Reinforcement for Rest Area on the Semarang-Solo Toll Road with Geoframe System","authors":"Nadya Ayu Anindita, Dandung Sri, Raffly Muhammad Darmawan","doi":"10.56144/igj.v2i3.52","DOIUrl":"https://doi.org/10.56144/igj.v2i3.52","url":null,"abstract":"On KM 456 Semarang-Solo Toll Road, a rest area which was predicted to be the grandest in Java was built. The rest area covered both sides of the toll road, which is in zone A (heading to Solo) and zone B (heading to Semarang). The rest area is built with remarkable view and unique traditional design with five roofs that represented five surrounding volcanoes. With all its philosophy, the owner sought the best option for all its structures, not only from the most economic, efficient, robust, but also the greenest option for the design. The rest area will be built on embankment with the highest being 11 meters. The embankment’s subgrade is rice field with 2 meters of soft silty clay. The initial design is to reinforce the embankment with 7-meters-tall concrete retaining wall and 2 rows of bore pile with 80 cm diameters and depth of 18 meters. This option was deemed to be very budget consuming, time consuming, and not very green. The Geoframe system, which is a combination of Geosynthetic materials, and wire mesh as facing was then chosen as the reinforcement for the embankment. The geogrid as reinforcement has proven to be very easy to install yet it’s very strong as the tensile capacity can be adjusted to the embankment’s needs. The Geoframe system can be constructed almost vertically (with a slope of 85°). Topographic data, SPT, CPT and laboratory test results were used to design a safe and efficient Geoframe system. Slope stability was analyzed using the Finite Element Method with PLAXIS 3D software. The construction carried out from 2019 to 2020 has proven that this method can be a safe, efficient, environmentally friendly option and still followed the articles stated in Indonesian National Standard for Geotechnical Design Requirements 8460: 2017.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139139757","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}

引用次数: 0

Load Test on Combined Pile and Cap / Pad Foundation System on Compressible Calcareous Sand and Comparison with FEM Modelling 可压缩石灰质砂上桩帽/垫块组合地基系统的荷载试验以及与有限元模型的比较

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.60

Abram Kris Wicaksono, Petrus Chanel Suprihadi Santoso, Paulus Pramono Rahardjo

{"title":"Load Test on Combined Pile and Cap / Pad Foundation System on Compressible Calcareous Sand and Comparison with FEM Modelling","authors":"Abram Kris Wicaksono, Petrus Chanel Suprihadi Santoso, Paulus Pramono Rahardjo","doi":"10.56144/igj.v2i3.60","DOIUrl":"https://doi.org/10.56144/igj.v2i3.60","url":null,"abstract":"An optimum type of foundation is expected to support 2 – 3 stories residential house on reclamation area to avoid deep foundation. The foundation will sit on engineering fill that constructed with calcareous sand which is classified as compressible sand. Below that part, at the original ground medium density sand and very soft marine clay is found stratified. Typical column in the residential building will have about 100 tons load intensity and based on this project, the design load for a single pile is 32 ton. Since no additional compression on soft clay layer is expected after building construction, than combine cap/pad foundation with short pile 6.5 m length is proposed. Load test with stress cell for this combine pile and cap/pad foundation was performed. The load test result show that interpretation using Chin’s and Mazurkiewicz’s Method obtained that the combined pile and cap/pad foundation’s ultimate bearing capacity of 112 – 119 tons. Analysis using stress cell data shows that the cap/pad carry about 31.8 % of the total load. Finite element analysis with axisymmetric condition conducted to study load distribution on combine pile and cap/pad foundation system. Analysis result was show that the cap or pad can carried about 38.1% of design load during testing. The 6.3% deviation between the stress cell and FEM results could be attribute by the assumption when calculating the load acting on cap/pad foundation. The stress cell analysis used the assumption that the load carried by the cap/pad foundation was uniform while the FEM results showed a non-uniform load.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139140433","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}

引用次数: 0

Replacement of Weathered Clay Shale Using Soil Cement for Bridge Approach Embankment in Purwakarta - Indonesia 在印度尼西亚普瓦卡塔引桥堤坝中使用土质水泥替代风化粘土页岩

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.58

Albert Johan, Andy Sugianto, Paulus Pramono Rahardjo

{"title":"Replacement of Weathered Clay Shale Using Soil Cement for Bridge Approach Embankment in Purwakarta - Indonesia","authors":"Albert Johan, Andy Sugianto, Paulus Pramono Rahardjo","doi":"10.56144/igj.v2i3.58","DOIUrl":"https://doi.org/10.56144/igj.v2i3.58","url":null,"abstract":"Clay shale is a sensitive soil material that easily experiences weathering if exposed to open air, sunlight, water. Weathered clay shale is commonly located near the surface and has a soft consistency due to surface water infiltration. Referring to this condition, weathered clay shale is prone to experience soil movement if backfill work is conducted on the top side of weathered clay shale material. Therefore, to minimize the potential of soil movement during backfilling, soil replacement using soil cement is recommended to be conducted to gain higher soil shear strength and to prevent excessive water infiltration to the fresh clay shale. To gain further understanding, a comprehensive study about the replacement of weathered clay shale using soil cement for bridge approach embankment in Purwakarta was carried out. This study comprises site observation, field data collection, laboratory test, explanation about implementation and quality control. The stages in implementation of soil cement is carried out in several stages such as : evaluation of soil condition on the project site, checking the suitability of local soil for the soil cement stabilization, conducting field test trial mockup followed by quality control, conducting crumb test and mechanical properties test for soil cement mixture. Based on assessment results, the soil cement mixture shall be directly compacted after the soil cement mixture is homogeneous to prevent segregation and shall be given a curing time of at least 3-7 days without additional water to gain better soil shear strength. Furthermore, according to the crumb test result, soil cement material was identified as quite impermeable which is verified by evidence that there was no significant change in water content and the soil cement sample could still stand firm after soaked for 7 days.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139140696","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}

引用次数: 0

Effect of Permanent Load in Gresik Alluvium on Friction Pile Embedment Depth 格雷西克冲积层中的永久荷载对摩擦桩嵌入深度的影响

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.54

James Oetomo, Ahmad Sulaiman, Ryan Achmad Fadhillah, Eka Diah Astuti

{"title":"Effect of Permanent Load in Gresik Alluvium on Friction Pile Embedment Depth","authors":"James Oetomo, Ahmad Sulaiman, Ryan Achmad Fadhillah, Eka Diah Astuti","doi":"10.56144/igj.v2i3.54","DOIUrl":"https://doi.org/10.56144/igj.v2i3.54","url":null,"abstract":"Hydrostatic load, approximately 250-35 kPa (i.e., water of 2.5m-3.5m high), has been applied in the project area for about 25 years; hereafter, it will be referred as permanent load. Recently, this permanent load including its perimeter embankment, is demolished for which a new facility will be built. The upper 2-4m soil layer in this area consists of fill soil (mainly cohesionless material) overlying thick Gresik alluvium layer. A bearing layer was not found (down to an investigation depth of 50m). The initial design of pile embedment depth refers to the legacy soil report, pile embedment information from the surrounding area (not being subjected by permanent load), and preliminary soil investigation data (from the surrounding area); in this case, the projected embedment depth is 20-23m with the friction pile design concept. Due to the proximity of project location with existing facilities, the jacking-driven pile method, with HSPD (Hydraulic Static Pile Driver) machine, is selected for installing the precast spun pile. The pile jacking works indicate that piles can only be driven down to a depth of about 12m (far less than the projected depth). This paper provides an analysis on the changes of soil properties due to permanent load, which in turn increasing the pile shaft capacity and effectively reducing the pile embedment depth. The analysis is supported by data from pile jacking record, PDA test, and instrumented test pile. Discussion regarding the conservatism in pile design is also presented.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139139920","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}

引用次数: 0

Economical Measures against Soft Ground at High Embankment on Peaty Ground 泥炭地高堤防软土地基的经济措施

Indonesian Geotechnical Journal Pub Date : 2023-12-30 DOI: 10.56144/igj.v2i3.55

Hijiri Hashimoto, Hirochika Hayashi, Atsushi Hirose, Keita Matsuda

{"title":"Economical Measures against Soft Ground at High Embankment on Peaty Ground","authors":"Hijiri Hashimoto, Hirochika Hayashi, Atsushi Hirose, Keita Matsuda","doi":"10.56144/igj.v2i3.55","DOIUrl":"https://doi.org/10.56144/igj.v2i3.55","url":null,"abstract":"Peat, which is considered a special soil, is widely distributed over approximately 2,000 km2 in Hokkaido, Japan. In terms of engineering properties, peat is extremely high in water content, ignition loss, and void ratio and extremely in low shear strength. Ground improvement methods using cement are effective for the rapid construction of embankments on peaty ground. However, to avoid differential settlement and lateral flow, most of such construction is carried out with an improvement ratio of ap=50%. In this case, the improvement can certainly be expected to be effective. However, it is less economical than other soft ground improvement methods. The challenge is to reduce the cost of improving the ground. Our institution (the Civil Engineering Research Institute for Cold Region, PWRI) has developed an economical measure against soft ground that uses cement with a reduced improvement ratio in combination with a crushed-stone mat (gravel foundation reinforcement), and we conducted the test construction of a 16-meter-high embankment to verify effectiveness of the method. The crushed-stone mat consists of a 50-cm layer of crushed stone covered with a geo-synthetic material. The test construction achieved the following results. (1) Settlement of the embankment was significantly reduced. (2) Slip failure did not occur. (3) Displacement to the surrounding ground did not occur. (4) The geotextile in the crushed-stone mat exhibited less strain than that which would cause the geo-synthetic to exceed its design strength. These results show that this economical measure against soft ground was effective at stabilizing the high embankment constructed on peaty ground.","PeriodicalId":439927,"journal":{"name":"Indonesian Geotechnical Journal","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139140091","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}

引用次数: 0