Non-destructive testing of bored piles

Tulebekova, A.; Shakirova, Nurgul; Zhankina, Aizhan; Muratov, Yerbolat

doi:10.54355/tbus/1.3.2021.0002

Cited by 3 publications

(3 citation statements)

References 7 publications

(4 reference statements)

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“…Hasil pengujian terhadap lebih dari 1500 pondasi bor, dimana 45% tiang diuji dengan CSL dan sisanya 55% diuji dengan PIT, ditemukan adanya 1 buah tiang yang mengalami kerusakan serius. Tulebekova (2021) melakukan perbandingan pengujian non-destructive terhadap pondasi bor dengan diameter 1.5 meter. Metode uji PIT digunakan terhadap 18 pondasi bor dengan hasil yang memuaskan dan uji CSL dilakukan pada 1 buah pondasi bor sedalam 53.1 m dengan hasil ditemukan adanya kerusakan beton pada kedalaman 22.6 -24.6 m. Hartono, dkk (2021) melakukan kajian evaluasi keutuhan beton terhadap 17 buah pondasi bor berdiameter 2.0 m di Proyek Pembangunan Jembatan Pulau Balang II dengan menggunakan metode CSL, dimana ditemukan adanya 1 buah tiang yang mengalami anomali pada kedalaman 57.5 -58.5 m.…”

Section: Pendahuluanunclassified

Evaluasi Pemeriksaan Integritas Beton Pondasi Bored Pile Berdasarkan Uji Pit (Pile Integrity Test) Dan Uji CSL (Crosshole Sonic Loging)

Yonamastuti

Naufal²,

Santoso³

2022

jurissipil

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A bored pile is one type of deep foundation made by casting the concrete in situ according to the design depth. Quality control of concrete integrity in the bored pile is impossible to check visually because it is embedded in the borehole. Therefore, non-destructive test methods with Pile Integrity Test (PIT) and Crosshole Sonic Logging (CSL) are commonly used to obtain an overview of the concrete integrity of bored piles. The aim of the study was to determine the integrity of the concrete in the drilled foundation using the PIT and CSL methods by taking samples of 4 bored piles with a diameter of 1000 mm at the

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Section: Pendahuluanunclassified

Evaluasi Pemeriksaan Integritas Beton Pondasi Bored Pile Berdasarkan Uji Pit (Pile Integrity Test) Dan Uji CSL (Crosshole Sonic Loging)

Yonamastuti

Naufal²,

Santoso³

2022

jurissipil

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“…Such issues are prevalent across diverse pile construction methodologies, including bored, bored-injected, driven, or indentation piles. Despite the significance of pile quality control, it often receives cursory treatment, limited to maintaining records and concrete sampling at delivery [4]. However, such measures offer only indirect assessment, focusing on compliance with design specifications rather than manufacturing quality or shaft integrity.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of pile quality control techniques

Omarov,

Iwasaki

2024

tbus

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This article delves into the critical realm of quality control in pile foundation construction, presenting a comprehensive exploration of both destructive and non-destructive testing methodologies. Focused on enhancing structural integrity and reliability, the study evaluates techniques such as concrete strength testing, core sampling, Cross-Hole Sonic Logging (CSL), and Pile Integrity Testing (PIT). Results from field observations conducted during construction of the Light Rail Transit (LRT) system in Astana showcase the effectiveness of non-destructive methods, with 1,896 bored piles subjected to rapid testing. Significant findings reveal that approximately 75% of tested shafts exhibited anomalies, emphasizing the necessity for meticulous quality control. The article concludes by advocating for the adoption of advanced quality assurance protocols to mitigate risks and ensure the robustness of pile foundations in construction projects.

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“…Low Strain Integrity Test, also known as the Pulse Echo Method (PEM) or Pile Integrity Test (PIT), is a non-destructive test method developed based on 1-dimensional wave propagation theory (1D-CASE). This PIT test has been widely used in controlling the quality of bored pile works because of its advantages compared to other methods, such as minimal pile sample preparation, which is relatively fast and cheaper [4]; [5]; [6]. However, the accuracy of interpreting PIT test results is determined by several parameters, including Exponential Magnification (MA), Magnification Delay (MD), Wave Speed (WS), Wavelet(WV), and Pivot (PI) [7].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Concrete Age on the Accuracy of Pile Integrity Testing on Bored Piles Foundation

Santoso,

Hartono,

Andani

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Bored pile foundations are defined as deep foundations in the form of an elongated tube with a specific diameter made of reinforced concrete installed using the drilling method and in-situ casting concrete. The cast in-situ process in bored holes with a deep elevation below the ground surface can potentially cause integrity problems, such as voids, segregation, fracture, necking, bulging, and other concrete defects. Currently, many non-destructive test methods are available to ensure the quality of the bored pile; one is the Low Strain Integrity Testing method, also known as Pile Integrity Testing (PIT). ASTM recommends that PIT should be carried out no sooner than 7 days after casting or the strength of the concrete has reached a minimum of 75,0% of its design strength. In fact, the PIT test is carried out before the concrete’s age and/or its strength is achieved, considering the limited construction time. This could lead to misinterpretation of the PIT test results and inaccurate identification of the bored pile defect locations. The study aims to determine the effect of concrete age on the accuracy of bored pile defect locations on a laboratory scale. The test model consisted of four bored piles with a diameter of 0,3 meters and a depth of 2,0 meters, which were cast using reinforced concrete with a design strength of fc’ 30 MPa. The PIT was performed at <7, 14, and 28 days of concrete age, and then the confusion matrix method was used to create a binary classification model to determine the accuracy of the defect location. The defect locations were visually observed and validated by dismantling the test model after 28 days of casting. The results showed that the accuracy of identifying the location of concrete defects was not affected by the age of the concrete but was determined by the compressive strength of the concrete during testing. Referring to the F-score, bored piles with concrete strength >75,0% of the design accurately identify defect locations above 84,21%. On the other hand, bored piles with concrete strength <75,0% design resulted in accuracy below 66,67%.

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Non-destructive testing of bored piles

Cited by 3 publications

References 7 publications

Evaluasi Pemeriksaan Integritas Beton Pondasi Bored Pile Berdasarkan Uji Pit (Pile Integrity Test) Dan Uji CSL (Crosshole Sonic Loging)

Evaluasi Pemeriksaan Integritas Beton Pondasi Bored Pile Berdasarkan Uji Pit (Pile Integrity Test) Dan Uji CSL (Crosshole Sonic Loging)

Comparative study of pile quality control techniques

The Influence of Concrete Age on the Accuracy of Pile Integrity Testing on Bored Piles Foundation

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