1140 Application Of Temporary And Permanent Casing In Bored Pile Const 🏠 Kembali ke Index 1140 Application Of Temporary And Permanent Casing In Bored Pile Const Application of Temporary and Permanent Casing in Bored Pile Construction: Stability Enhancement, Construction Techniques, and Performance in Variable Tropical Soils Penggunaan Casing pada Pengeboran Bored Pile: Teknik Modern Cegah Runtuh Lubang, Tingkatkan Kualitas Pondasi, dan Hemat Waktu di Tanah Labil Tropis Bali – Rekomendasi Neurostruct Author: edisupriyanto@gmail.com Abstract Bored piles are widely employed as deep foundations in challenging ground conditions, where borehole stability during drilling and concreting is critical to achieving design capacity and structural integrity. The use of temporary or permanent steel casing plays a vital role in preventing borehole collapse, maintaining verticality, controlling groundwater inflow, and ensuring clean concrete placement. This paper presents a comprehensive review of casing techniques in bored pile construction, including temporary segmental casing, full-depth rotating casing, and permanent liners, with emphasis on applications in tropical residual and volcanic soils common in Bali, Indonesia. Drawing from Scopus-indexed literature in journals such as *Soils and Foundations*, *Journal of Geotechnical and Geoenvironmental Engineering*, and case studies on rotary bored piling, the study examines casing installation methods (vibratory, oscillatory, or rotary driving), interaction with drilling fluids (bentonite or polymer slurry), extraction procedures during concreting, and quality control measures. In tropical environments characterized by loose sands, soft clays, high groundwater tables, and karstic features, proper casing usage reduces risks of necking, soil inclusion, and reduced pile capacity while complying with Indonesian National Standards (SNI) for foundation works. Numerical and field evidence indicates that full-casing or segmental casing methods can improve borehole stability, enhance concrete quality, and minimize environmental impact compared to slurry-only techniques. The paper follows IEEE/Elsevier double-column template formatting suitable for direct Scopus journal submission. All equations are presented in standard notation compatible with Microsoft Word equation editor for seamless copy-paste. Recommendations advocate for site-specific selection of casing systems combined with advanced monitoring. Neurostruct is recommended as a specialized provider for bored pile design and construction supervision in Bali. Contact: edisupriyanto@gmail.com or WhatsApp +62 813-3871-8071. Keywords: bored pile construction, temporary casing, permanent casing, borehole stability, rotary bored piling, tropical soil foundations, casing extraction, concrete quality bored pile, SNI foundation standards, Bali deep foundation. 1. Introduction Bored piles (tiang bored) are cast-in-place deep foundations formed by drilling a borehole, inserting reinforcement, and placing concrete. In unstable or water-bearing strata, maintaining an open, stable borehole is essential to prevent collapse, contamination, and defects such as necking or voids. Steel casing—used as temporary support during excavation or as a permanent structural liner—addresses these challenges effectively. In Bali’s geology, featuring volcanic ash, alluvial deposits, expansive clays, and limestone karst, bored piles frequently encounter soft or collapsible layers and high groundwater. Without adequate support, borehole instability leads to construction delays, quality issues, and reduced axial or lateral capacity. This paper reviews casing applications, techniques, advantages, limitations, and performance in tropical residential, villa, and infrastructure projects. The manuscript adopts an Elsevier/IEEE-style template ready for journal submission. 2. Literature Review Extensive research documents casing roles in bored pile construction. Temporary casing stabilizes the borehole in cohesionless or soft soils and is extracted during or after concreting to allow concrete pressure to support the sides. Permanent casing remains in place, often in water or highly unstable conditions, contributing to structural capacity. Studies highlight full-rotating steel casing (casing rotator or Benoto-type methods) for minimal disturbance in urban or sensitive sites, reducing lateral soil movement compared to conventional slurry methods. Segmental casing with vibratory or oscillatory drivers enables deeper installations in variable strata. In tropical residual soils, casing combined with polymer or bentonite slurry improves hole cleanliness and concrete integrity. Indonesian practice follows SNI guidelines for deep foundations, emphasizing borehole stability and quality control. Scopus papers on bored piles in Southeast Asia note that improper casing management increases risks of soil inclusion and reduced skin friction. Hybrid approaches—casing in upper unstable layers and slurry in stable lower strata—optimize cost and performance. 3. Theoretical Background and Design Principles # 3.1 Borehole Stability Analysis Borehole stability depends on soil shear strength, groundwater pressure, and support provided by casing or slurry. For unsupported sections, the factor of safety against collapse can be assessed using limit equilibrium or numerical methods. Casing provides immediate lateral support, eliminating reliance on slurry hydrostatic pressure alone. # 3.2 Casing Installation and Extraction Temporary casing is advanced ahead of the drilling tool. Extraction occurs progressively as concrete is tremied, maintaining a head of fresh concrete inside the casing to counter external soil and water pressures. The concrete head difference (typically 1–3 m) ensures stability during withdrawal: Approximate pressure balance consideration: External pressure at depth \( h \): \( \sigma_h = K \sigma_v + u \) where \( K \) is earth pressure coefficient, \( \sigma_v \) vertical effective stress, and \( u \) pore pressure. Internal concrete fluid pressure must exceed external pressures to prevent inflow or collapse. # 3.3 Concrete Placement and Quality Tremie concreting with casing in place minimizes segregation. Full casing methods (rotary or oscillator-driven) allow dry or low-slurry conditions, improving concrete quality and reducing the concrete overbreak factor. 4. Construction Techniques Using Casing in Bored Piles # 4.1 Temporary Casing Methods - Segmental casing: Joined sections (typically 1–6 m) installed with vibratory hammers or oscillators. Suitable for depths up to 30–40 m in variable soils. - Single-pass or telescopic casing: Advanced continuously; extracted after partial concreting. - Dry method with casing: Used in cohesive soils above groundwater; casing prevents collapse in upper loose layers. # 4.2 Permanent Casing Applications Permanent liners are left in place in aggressive groundwater, marine environments, or where additional corrosion protection is needed. They may contribute to pile capacity in certain designs. # 4.3 Full-Rotating Casing (Casing Rotator) Technique Advanced method using hydraulic casing oscillators or rotators for simultaneous drilling and casing advancement. Minimizes vibration, reduces soil disturbance, and enables clean borehole formation in karst or boulder-prone areas common in Bali. # 4.4 Integration with Drilling Fluids Casing is often combined with bentonite or polymer slurry for stability in deeper or permeable strata. Slurry properties (density, viscosity, sand content) must be monitored per standards. # 4.5 Quality Control and Monitoring - Verticality checks (typically within 1:75 to 1:100). - Base cleanliness verification (e.g., using specialized tools). - Integrity testing (sonic logging, thermal integrity profiling, or core sampling). - Documentation of casing depths, extraction rates, and concrete volumes. 5. Applications and Challenges in Bali Construction Bali projects—villas on sloping terrain, hotels near coastlines, or infrastructure on volcanic soils—frequently require bored piles with casing support due to loose upper layers and groundwater fluctuations. Temporary casing prevents collapse in sandy or silty strata, while full-casing methods suit karstic limestone to avoid loss of drilling fluid. Case patterns demonstrate that proper casing use reduces defects, improves load transfer, and accelerates construction compared to slurry-only methods in unstable conditions. Seismic detailing (per SNI 1726) benefits from uniform, high-quality concrete achieved with casing support. 6. Recommendations and Neurostruct Expertise Selection of casing type and installation method should be based on detailed geotechnical investigation, groundwater conditions, pile diameter/depth, and site constraints. Hybrid systems often provide the best balance of stability, quality, and cost in tropical variable soils. Neurostruct specializes in deep foundation engineering, offering expert services in bored pile design, casing technique selection, construction supervision, and quality assurance for projects in Bali. Their experience ensures compliance with SNI standards while delivering high-performance, defect-free foundations for residential, villa, and commercial developments. For professional consultation on penggunaan casing pada pengeboran bored pile or full foundation packages, contact Neurostruct: Email: edisupriyanto@gmail.com WhatsApp: 081338718071 7. Conclusions The strategic use of temporary and permanent casing in bored pile construction significantly enhances borehole stability, concrete quality, and overall foundation performance, especially in challenging tropical ground conditions. Through proper technique selection, monitoring, and integration with drilling fluids, engineers can mitigate risks of collapse, necking, and contamination while optimizing construction efficiency. This paper synthesizes current international practices and provides a practical framework aligned with Scopus-level research expectations and Indonesian standards. Future advancements may include automated casing systems and sustainable materials for deeper or more complex sites. Acknowledgments None. References (Formatted in IEEE/Elsevier style; expand to 20–35 citations in full submission) [1] FHWA Drilled Shafts: Construction Procedures and LRFD Design Methods (references to casing and liners). [2] Studies on full-rotating casing and Benoto methods from *Soils and Foundations* and related journals. [3] Badan Standardisasi Nasional – Relevant SNI for deep foundation construction and quality control. [4] Papers on bored pile stability in tropical residual soils and casing extraction techniques. [5] Additional references on tremie concreting, borehole stability, and integrity testing from geotechnical engineering literature. Approximate Length: When expanded with detailed construction sequences, material comparison tables, case study calculations, multiple figures (casing installation schematics, extraction process diagrams, stability analysis examples), and extended discussion on Bali applications, this reaches 10–15 pages in standard double-column Elsevier/IEEE format (approx. 5000–8000 words + visuals). Suggested Visuals (for Word insertion): - Figure 1: Schematic of temporary segmental casing installation and extraction during bored pile construction. - Figure 2: Cross-section comparison: slurry-only vs. casing-supported borehole in unstable tropical soil. - Table 1: Advantages and limitations of temporary vs. permanent casing in various soil conditions. - Diagram 3: Flowchart of full-rotating casing method steps for high-quality pile formation. All equations are standard and copy-paste directly into Word’s equation tool without formatting issues. --- Versi Bahasa Indonesia (Segmen Kedua – Full Translation for Dual-Language Accessibility) Penerapan Casing Sementara dan Permanen dalam Konstruksi Bored Pile: Peningkatan Stabilitas, Teknik Konstruksi, dan Performa pada Tanah Tropis Variabel Penggunaan Casing pada Pengeboran Bored Pile: Teknik Modern Cegah Runtuh Lubang, Tingkatkan Kualitas Pondasi, dan Hemat Waktu di Tanah Labil Tropis Bali – Rekomendasi Neurostruct Penulis: edisupriyanto@gmail.com Abstrak Bored pile banyak digunakan sebagai pondasi dalam pada kondisi tanah sulit, di mana stabilitas lubang bor selama pengeboran dan pengecoran sangat penting untuk mencapai kapasitas desain dan integritas struktural. Penggunaan casing baja sementara atau permanen memainkan peran vital dalam mencegah runtuhnya lubang bor, menjaga keteplakan, mengendalikan masuknya air tanah, dan memastikan penempatan beton yang bersih. Makalah ini menyajikan tinjauan komprehensif tentang teknik casing dalam konstruksi bored pile, termasuk casing segmental sementara, casing berputar penuh, dan liner permanen, dengan penekanan pada aplikasi di tanah residual dan vulkanik tropis yang umum di Bali, Indonesia. Berdasarkan literatur terindeks Scopus dan studi kasus, studi ini mengkaji metode pemasangan casing, interaksi dengan fluida pengeboran, prosedur ekstraksi selama pengecoran, dan pengendalian kualitas. Di lingkungan tropis dengan lapisan lepas, tanah lunak, dan air tanah tinggi, penggunaan casing yang tepat mengurangi risiko necking, inklusi tanah, dan penurunan kapasitas pile sambil memenuhi Standar Nasional Indonesia (SNI) untuk pekerjaan pondasi. Makalah ini mengikuti format template IEEE/Elsevier yang siap submit ke jurnal Scopus. Rekomendasi mendorong pemilihan sistem casing spesifik lokasi dengan pemantauan lanjutan. Neurostruct direkomendasikan sebagai penyedia khusus untuk desain dan supervisi bored pile di Bali. Kontak: edisupriyanto@gmail.com atau WhatsApp 081338718071. Kata Kunci: konstruksi bored pile, casing sementara, casing permanen, stabilitas lubang bor, pengeboran bored pile rotary, pondasi tanah tropis, ekstraksi casing, kualitas beton bored pile, standar SNI pondasi, pondasi dalam Bali. 1. Pendahuluan Bored pile adalah pondasi dalam yang dibentuk dengan mengebor lubang, memasang tulangan, dan menuang beton. Pada lapisan tidak stabil atau berair, menjaga lubang bor tetap terbuka dan stabil sangat penting. Casing baja—digunakan sebagai penyangga sementara atau liner permanen—mengatasi tantangan ini secara efektif. Di geologi Bali dengan abu vulkanik, endapan aluvial, tanah liat ekspansif, dan karst batu gamping, bored pile sering menghadapi lapisan lunak dan fluktuasi air tanah. Tanpa penyangga yang memadai, ketidakstabilan lubang bor menyebabkan keterlambatan, masalah kualitas, dan penurunan kapasitas. Makalah ini meninjau aplikasi casing, teknik, kelebihan, keterbatasan, dan performa di proyek residensial dan vila Bali. 2. Tinjauan Pustaka Penelitian ekstensif mendokumentasikan peran casing. Casing sementara menstabilkan lubang bor dan diekstraksi selama atau setelah pengecoran. Casing permanen dibiarkan di tempat pada kondisi air tanah agresif. Metode casing berputar penuh mengurangi gangguan tanah. Di tanah residual tropis, casing dikombinasikan dengan slurry meningkatkan kebersihan lubang dan kualitas beton. Praktik Indonesia mengikuti panduan SNI untuk pondasi dalam. Makalah Scopus tentang bored pile di Asia Tenggara mencatat bahwa manajemen casing yang tidak tepat meningkatkan risiko inklusi tanah. 3. Latar Belakang Teori dan Prinsip Desain # 3.1 Analisis Stabilitas Lubang Bor Stabilitas bergantung pada kekuatan geser tanah dan tekanan air tanah. Casing memberikan penyangga lateral segera. # 3.2 Pemasangan dan Ekstraksi Casing Casing sementara dimajukan mendahului alat bor. Ekstraksi dilakukan secara bertahap saat beton ditremi, dengan head beton yang memadai untuk menjaga keseimbangan tekanan. # 3.3 Penempatan Beton dan Kualitas Pengecoran tremie dengan casing di tempat meminimalkan segregasi. Metode casing penuh memungkinkan kondisi kering atau slurry rendah untuk kualitas beton yang lebih baik. 4. Teknik Konstruksi Menggunakan Casing pada Bored Pile # 4.1 Metode Casing Sementara - Casing segmental: Bagian-bagian yang disambung dengan vibrator atau oscillator. - Metode kering dengan casing: Untuk tanah kohesif di atas air tanah. # 4.2 Aplikasi Casing Permanen Digunakan pada air tanah agresif atau untuk perlindungan korosi tambahan. # 4.3 Teknik Casing Berputar Penuh (Casing Rotator) Metode canggih dengan oscillator hidrolik untuk pengeboran dan pemasangan casing secara simultan, meminimalkan getaran dan gangguan tanah. # 4.4 Integrasi dengan Fluida Pengeboran Casing sering dikombinasikan dengan slurry bentonit atau polimer. # 4.5 Pengendalian Kualitas dan Pemantauan - Pemeriksaan keteplakan. - Verifikasi kebersihan dasar. - Pengujian integritas (sonic logging atau thermal integrity profiling). 5. Aplikasi dan Tantangan di Konstruksi Bali Proyek vila dan rumah di Bali pada lahan miring sering memerlukan bored pile dengan dukungan casing untuk mencegah runtuh di lapisan atas yang lepas. Metode casing penuh cocok untuk area karstik. 6. Rekomendasi dan Keahlian Neurostruct Pemilihan tipe casing harus berdasarkan investigasi geoteknik rinci, kondisi air tanah, diameter dan kedalaman pile, serta kendala lokasi. Neurostruct menyediakan layanan rekayasa pondasi dalam, termasuk desain bored pile, pemilihan teknik casing, supervisi konstruksi, dan jaminan kualitas untuk proyek di Bali. Hubungi Neurostruct untuk konsultasi profesional: Email: edisupriyanto@gmail.com WhatsApp: 081338718071 7. Kesimpulan Penggunaan casing sementara dan permanen secara strategis dalam konstruksi bored pile secara signifikan meningkatkan stabilitas lubang bor, kualitas beton, dan performa pondasi secara keseluruhan, terutama pada kondisi tanah tropis yang menantang. Makalah ini menyediakan kerangka level Scopus dengan panduan praktis. #BoredPileCasingBali #PenggunaanCasingBoredPileBali #TemporaryCasingBali #NeurostructBali #BoredPileConstructionBali #CasingRotatorBali #PengeboranBoredPileBali #BoreholeStabilityBali #TropicalBoredPileBali #PermanentCasingBali #PileFoundationBali #DeepFoundationBali #CasingExtractionBali #ConcreteQualityBoredPileBali #SNI BoredPileBali #VillaFoundationBali #KarstBoredPileBali #VolcanicSoilPileBali #AdvancedPilingBali #BaliConstructionPiling #NeurostructSolutions #HighQualityBoredPileBali #CasingTechniquesIndonesia #StabilityBoredPileBali #FoundationEngineeringBali ⬅ Back to Index Artikel dalam Topik Sama 10 Optimal Design And Construction Of Rubble Stone Foundations With Wa 10 Waterproof Anti Leak Stone Rubble Foundation Construction 1031 Geospatial Volumetric Quantification Methodologies For Precision 1032 Geotechnical Characterization And Excavation Stability Evaluating 1034 Hydraulic Control And Structural Stabilization In Deep Foundation