Inverse Analysis of Geotechnical Parameters on Improved Soft Bangkok Clay

Bergado, Dennes T.; Enriquez, Apollo S.; Sampaco, Casan L.; Alfaro, Marolo C.; Balasubramaniam, A. S.

doi:10.1061/(asce)0733-9410(1992)118:7(1012)

Cited by 35 publications

(17 citation statements)

References 10 publications

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“…Initial void ratio for the 5ft undisturbed sample is the highest value compared with other samples which 0.936. [5,6,7,8]. The C c values also decrease with depth indicating less potential of settlement with increase in depth.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Geotechnical and Consolidation Characteristics: A Case Study of UET, Kala Shah Kaku Campus, Lahore, Pakistan

Sohail¹,

Aadil²,

Khan³

2012

IJET

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Section: Discussionmentioning

confidence: 99%

Analysis of Geotechnical and Consolidation Characteristics: A Case Study of UET, Kala Shah Kaku Campus, Lahore, Pakistan

Sohail¹,

Aadil²,

Khan³

2012

IJET

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“…Comparative studies on soft clay soils of Bangkok by Bergado et al [10] revealed the use of compacted granular piles (CGP), and prefabricated vertical drains (PVD). The studies indicated that in the case of soils improved with PVDs, the settlement rates were higher by 30% -35% when compared to soils improved using CGPs.…”

Section: Literature Reviewmentioning

confidence: 99%

A Model Study on Accelerated Consolidation of Coir Reinforced Lateritic Lithomarge Soil Blends with Vertical Sand Drains for Pavement Foundations

Varghese¹,

Hegde²,

Kumar³

et al. 2012

OJSS

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Sub-grade soils of lateritic origin encountered in the construction of highway embankments in various regions of India, often comprise intrusions of soft lithomargic soils that result in large settlements during constructions, and differential settlements at later stages. This necessitates the use of appropriate soil improvement techniques to improve the load-carrying capacity of pavements. This work deals with accelerated consolidation of un-reinforced and coir-reinforced lateritic lithomargic soil blends, provided with three vertical sand drains. The load-settlement characteristics were studied for various preloads ranging from 50 kg (0.0013 N/mm 2 ) to 500 kg (0.013 N/mm 2 ) on soil specimens prepared in circular ferrocement moulds. It was observed that at lower preloads up to 200 kg, across the blends, the relative increase in consolidation (R ct ) for randomly reinforced soil with vertical drains was significantly higher than that of un-reinforced soil without vertical drains, with an average value of 124.8%. Also, the R ct for un-reinforced soil with vertical drains was quite higher than that of un-reinforced soil without vertical drains, with an average value of 103.9%. In the case of higher preloads, the R ct values for randomly reinforced soil with vertical drains were moderate with an average value of 30.88%, while the same for un-reinforced soil with vertical drains was about 20.4%. The aspect-ratio of coir fibers used was 1:275.

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“…Bergado et al (1992) suggested that ds/dw＝2.5. Rixner et al (1986) showed that dw can be obtained as follows:…”

Section: Analytical Simulation For Consolidation Behavior Of Full-scamentioning

confidence: 99%

“…(3) to (8)) was used to back analyze the PVD embankments results presented in Fig. 13(a) as explained by Bergado et al (1992). The back-analysis showed that the values of ch and kh/ks ratio for PVD embankment are 5.5 m 2 /year and 9.0, respectively.…”

Section: Analytical Simulation For Consolidation Behavior Of Full-scamentioning

confidence: 99%

Full-Scale Embankment Consolidation Test using Prefabricated Vertical Thermal Drains

Pothiraksanon

Bergado

Abuel-Naga

2010

Soils and Foundations

Self Cite

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In this study theˆeld feasibility of an innovative thermal technique to improve the performance of prefabricated vertical drains (PVD) used in conjunction with the preloading ground improvement method is investigated. For this purpose, two identical 6.0 m high full-scale test embankments for preloading were constructed over the soft Bangkok clay where a conventional PVD system was installed underneath one embankment and a novel prefabricated vertical thermo-drain (PVTD) system was utilized for the other. The PVTD unit consists of a U-tube made of cross-linked polyethylene plastic (PEX) that is attached to a conventional PVD unit. Preheated water at about 909 C is circulated through the attached U-tube to raise the soil temperature underneath the PVTD embankment. The behavior of the two test embankments were compared in terms of excess pore water pressure and consolidation results. The comparison shows the advantage of a PVTD system over a conventional PVD system. The rate of consolidation increases signiˆcantly in the PVTD system due to the temperature eŠect on the hydraulic conductivity. Moreover, the embankment with the PVTD system generates more settlement due to the thermally induced irreversible contraction of saturated normally consolidated soft Bangkok clay.

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Inverse Analysis of Geotechnical Parameters on Improved Soft Bangkok Clay

Cited by 35 publications

References 10 publications

Analysis of Geotechnical and Consolidation Characteristics: A Case Study of UET, Kala Shah Kaku Campus, Lahore, Pakistan

Analysis of Geotechnical and Consolidation Characteristics: A Case Study of UET, Kala Shah Kaku Campus, Lahore, Pakistan

A Model Study on Accelerated Consolidation of Coir Reinforced Lateritic Lithomarge Soil Blends with Vertical Sand Drains for Pavement Foundations

Full-Scale Embankment Consolidation Test using Prefabricated Vertical Thermal Drains

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