CPT Profiling and Laboratory Data Correlations for Deriving of Selected Geotechnical Parameter

Abstract Currently, can be seen a new trend in engineering geological survey, where laboratory analysis are replaced by in situ testing methods, which are more efficient and cost effective, and time saving too. A regular engineering geological survey cannot be provided by simple core drillings, macroscopic description (sometimes very subjective), and then geotechnical parameters are established based on indicative standardized values or archive values from previous geotechnical standards. The engineering geological survey is trustworthy if is composed of laboratory and in-situ testing supplemented by indirect methods of testing, [1]. The prevalence of rotary core drilling for obtaining laboratory soil samples from various depths (every 1 to 3 m), cannot be a more enhanced as continues evaluation of strata and properties e.g. by CPT Piezocone (every 1 cm). Core drillings survey generally uses small amounts of soil samples, but this is resulting to a lower representation of the subsoil and underestimation of parameters. Higher amounts of soil samples make laboratory testing time-consuming and results from this testing can be influenced by the storage and processing of the soil samples. Preference for geotechnical surveys with in situ testing is therefore a more suitable option. In situ testing using static and dynamic penetration tests can be used as a supplement or as a replacement for the (traditional) methods of surveying.

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Boosting the Capabilities of Gas Stand Data Acquisition and Control Systems by Using a Digital Twin Based on a Holistic Turbocharger Model

10.1115/icef2021-66745 ◽

2021 ◽

Author(s):

José R. Serrano ◽

Luis Miguel García-Cuevas ◽

Vishnu Samala ◽

Juan Antonio López-Carrillo ◽

Holger Mai

Keyword(s):

Data Acquisition ◽

Control Systems ◽

Heat Fluxes ◽

Testing Time ◽

Time Saving ◽

Digital Twin ◽

Dimensional Modeling ◽

On Line ◽

And Control

Abstract During the last decade, increasingly advanced turbocharger models have been developed for sizing, engine matching and one-dimensional modeling. This work goes further and, instead of using these models for turbocharged engines design or analysis, it implements them in the data acquisition and control system of a turbocharger gas stand. This way, interesting new capabilities arise. The paper shows that there are important synergies between advanced turbocharger gas stand data acquisition and control systems and the modern turbocharger holistic models that have not been deeply exploited until now. They can be summarized as: on-line heat fluxes analysis, in-situ outlier testing points detection, testing time saving and using digital-twin techniques to monitor turbocharger health during testing.

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Direct tuberculosis drug susceptibility testing: time-saving and cost-effective in detecting MDR-TB

The International Journal of Tuberculosis and Lung Disease ◽

10.5588/ijtld.15.0637 ◽

2016 ◽

Vol 20 (3) ◽

pp. 323-328 ◽

Cited By ~ 2

Author(s):

T. Zhang ◽

C-F. Lv ◽

J. Wang ◽

W-B Zheng ◽

L-Z. Lu ◽

...

Keyword(s):

Susceptibility Testing ◽

Cost Effective ◽

Drug Susceptibility ◽

Drug Susceptibility Testing ◽

Testing Time ◽

Time Saving ◽

Mdr Tb

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In situ tests in Brasília porous clay

Canadian Geotechnical Journal ◽

10.1139/t96-035 ◽

1996 ◽

Vol 33 (1) ◽

pp. 189-198 ◽

Cited By ~ 6

Author(s):

J A.R Ortigao ◽

R P Cunha ◽

L S Alves

Keyword(s):

Low Cost ◽

Laboratory Data ◽

Design Parameters ◽

Residual Soils ◽

In Situ Testing ◽

In Situ Tests ◽

Deformation Parameters ◽

Strength And Deformation ◽

Plate Loading

An in situ testing programme was carried out in 1992 aimed at obtaining design parameters for the construction of the Brasília Underground line, Brazil. The top layer of soil consisted of an unsaturated and collapsible soft porous clay layer 530 m thick followed by residual soils from slate and interlayered metasiltsones and quartzites. A series of Marchetti dilatometer (DMT) logging tests results were comapred with Ménard pressuremeter (PMT) and horizontal plate loading (PLH) tests, as well as laboratory tests on block samples. In situ stresses, strength, and deformation parameters were obtained for the porous clay. The DMT yielded very good results: excellent repeatability, low cost, and results that agree with other in situ tests and laboratory data. Key words: porous clay, in situ testing, dilatometer, pressuremeter.

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In Situ Study on Reinforced Effect of Silt by Ram-Compaction Gravel Pile with End Expansion

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.446-449.3428 ◽

2012 ◽

Vol 446-449 ◽

pp. 3428-3431

Author(s):

Chao Liang Ye ◽

Huai Ping Feng ◽

Yao Jun Liu

Keyword(s):

Static Load ◽

Load Test ◽

Silty Clay ◽

Heavy Duty ◽

Static Load Test ◽

Dynamic Penetration ◽

S Curve ◽

Gravel Pile ◽

Penetration Tests

Ram-compaction gravel pile with end expansion is widely adopted in the treatment of silty clay foundations. In this paper, the bearing properties of rammed gravel pile reinforced foundations and soil between piles were investigated by use of static load tests and heavy-duty dynamic penetration test. It is demonstrated that the settlement curves (P-S curve) of ram-compaction gravel pile with end expansion reinforced foundation and soil between piles were monotonic, without turning point being observed. With the increases of pile length, the bearing capacity of pile increases. According to the experimental results from heavy dynamic penetration tests and static load test, the strength of soil between piles is improved, which also have effects on the elimination of the uneven settlements. Comparison the results between heavy-duty dynamic penetration tests and over-heavy dynamic penetration tests shows that the later one is suitable on testing of the soil properties between piles. In addition, from in-situ measurements of uplift deformation of different depths, it is found that uplift behavior occurs with depth more than 0.5m, whit largest uplift value of 21cm. The result provides a reference for the design and construction of rammed gravel pile reinforced foundation.

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Selection of DNA Aptamers for Subcellular Localization of RBSDV P10 Protein in the Midgut of Small Brown Planthoppers by Emulsion PCR-Based SELEX

Viruses ◽

10.3390/v12111239 ◽

2020 ◽

Vol 12 (11) ◽

pp. 1239

Author(s):

Haoqiu Liu ◽

Yijun Zhou ◽

Qiufang Xu ◽

Sek-Man Wong

Keyword(s):

Brown Planthopper ◽

Cost Effective ◽

Dna Aptamers ◽

Dot Blot ◽

Time Saving ◽

Emulsion Pcr ◽

Detection Probe

Rice black-streaked dwarf virus (RBSDV), classified under the Reoviridae, Fijivirus genus, caused an epidemic in the eastern provinces of China and other East Asian countries and resulted in severe yield loss in rice and wheat production. RBSDV is transmitted by the small brown planthopper (SBPH, Laodelphax striatellus Fallén) in a persistent manner. In order to provide a stable and cost-effective detection probe, in this study we selected three DNA aptamers (R3, R5 and R11) by an optimized, standardized and time saving emulsion PCR-based SELEX, for the detection of RBSDV outer-shell P10 protein for in situ localization studies in the midgut of SBPH. The specificity of these three DNA aptamers was tested through detection of the P10 protein using an enzyme-linked oligonucleotide assay (ELONA) and aptamer-based dot-blot ELISA. All three DNA aptamers can be used to detect RBSDV P10 protein by immunofluorescent labeling in the midgut of RBSDV-infected SBPH. These data show that the selected aptamers can be used for the detection of RBSDV P10 protein in vitro and in vivo. This is the first report of aptamers being selected for detection of a rice virus capsid protein.

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Interpretation of in situ test results from the CANLEX sites

Canadian Geotechnical Journal ◽

10.1139/t00-044 ◽

2000 ◽

Vol 37 (3) ◽

pp. 505-529 ◽

Cited By ~ 31

Author(s):

C E (Fear) Wride ◽

P K Robertson ◽

K W Biggar ◽

R G Campanella ◽

B A Hofmann ◽

...

Keyword(s):

Shear Wave ◽

Wave Velocity ◽

Shear Wave Velocity ◽

Soil Liquefaction ◽

In Situ Testing ◽

Cone Penetration ◽

In Situ Tests ◽

Cone Penetration Tests ◽

Penetration Tests

One of the primary objectives of the Canadian Liquefaction Experiment (CANLEX) project was to evaluate in situ testing techniques and existing interpretation methods as part of the overall goal to focus and coordinate Canadian geotechnical expertise on the topic of soil liquefaction. Six sites were selected by the CANLEX project in an attempt to characterize various deposits of loose sandy soil. The sites consisted of a variety of soil deposits, including hydraulically placed sand deposits associated with the oil sands industry, natural sand deposits in the Fraser River Delta, and hydraulically placed sand deposits associated with the hard-rock mining industry. At each site, a target zone was selected and various in situ tests were performed. These included standard penetration tests, cone penetration tests, seismic downhole cone penetration tests (giving shear wave velocity measurements), geophysical (gamma-gamma) logging, and pressuremeter testing. This paper describes the techniques used in the in situ testing program at each site and presents a summary and interpretation of the results.Key words: CANLEX, in situ testing, shear wave velocity, geophysical logging, pressuremeter.

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Comparison of the results from static and dynamic penetration tests, in situ plate tests and laboratory compressibility tests

Penetration Testing ◽

10.1201/9780203743959-17 ◽

2021 ◽

pp. 101-106

Author(s):

A. Marcu ◽

M. Popescu ◽

T. Abramescu ◽

C. Balacciu

Keyword(s):

Dynamic Penetration ◽

Comparison Of The Results ◽

Penetration Tests

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In situ strength characterisation of peat and organic soil using full-flow penetrometers

Canadian Geotechnical Journal ◽

10.1139/t11-023 ◽

2011 ◽

Vol 48 (7) ◽

pp. 1085-1099 ◽

Cited By ~ 17

Author(s):

N. Boylan ◽

M. Long ◽

F.A.J.M. Mathijssen

Keyword(s):

Organic Soil ◽

Cone Penetrometer ◽

Uniform Measure ◽

In Situ Testing ◽

Strength Parameters ◽

Resistance Factors ◽

Fibrous Peat ◽

Penetration Tests ◽

Range Of Values

Full-flow penetrometers have been shown to overcome problems experienced with the cone penetrometer when measuring resistance in very soft peat and organic soil, and give a much more uniform measure of resistance than the cone in fibrous peat. However, at present there is no guidance on the interpretation of strength parameters in these soils using the T-bar and ball. This paper examines the results of tests using these devices at two research sites in the Netherlands in conjunction with high-quality Sherbrooke sampling for laboratory testing. In fibrous peat, the T-bar and ball provided a more uniform measure of resistance with a lower degree of scatter than the cone. The in situ testing results have been compared with the laboratory tests to assess the range of resistance factors relating penetration resistance to the undrained shear strength (su) and have been shown to occupy a lower range of values than the cone penetrometer. However, penetration tests in these soils are likely to be influenced by partial drainage effects and this should be considered during testing and the subsequent interpretation of results. Recommendations are made for the use of full-flow penetrometers to obtain strength parameters in these soils.

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