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"Contents: Since AAR was first identified in 1940, it has been a subject dominated by studies of the mineralogy of AAR-susceptible aggregates, the chemistry of the AAR and related reactions and laboratory tests used to diagnose AAR and predict potential future swelling. Civil and structural engineers have found the literature bewildering and difficult to apply to their immediate requirements of assessing the present and future effects of AAR on the strength, safety and serviceability of plain and reinforced concrete structures. There is a need to discuss methods that can be used for in situ non-destructive testing to assess the effects of AAR, and in-service measurements and load-testing to assess the present and future safety of reinforced concrete structures. Methods of repair and rehabilitation and their long-term success also need to be discussed, as do methods of halting or slowing the progress of AAR. At the same time, the fundamentals of AAR need to be explained in terms intelligible to the civil and structural engineer who is primarily trained in structural mechanics and design, but also needs to have a basic understanding of the AAR process and its effects on concrete."

"Kasus ditemukannya penurunan kualitas beton pada struktur bangunan umum terjadi karena banyaknya faktor yang memengaruhi kualitas beton. Maraknya penggunaan material beton sebagai struktur bangunan membuat diperlukannya pengkajian ulang mengenai pengaruh penurunan kualitas beton pada kebutuhan tulangan serta kinerja seismik struktur bangunan. Penurunan kualitas beton diatur pada SNI 2847:2019 dengan batasan ditemukannya penurunan kualitas beton maksimum sebesar 25% dari mutu desain. Penelitian ini dilakukan terhadap gedung 8 tingkat berbentang tunggal dengan variasi penurunan kualitas beton pada kolom dengan variasi penurunan 7,5%, 15%, dan 25% dari mutu desain. Objek penelitian didesain menggunakan SNI 2847:2019 menggunakan sistem rangka pemikul momen khusus lalu dievaluasi menggunakan analisis berbasis ASCE 41-17 dengan menggunakan gempa desain dan gempa maksimum. Dari variasi tersebut ditemukan bahwa penurunan kualitas beton kolom sebesar 25% dari mutu desain mengakibatkan kenaikan kebutuhan tulangan kolom hingga 2 kali lipat dari tulangan desain dan sebagian kolom mengalami penurunan kinerja seismik.

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Deficiency of concrete quality in building is common to find due to numerous factors affecting concrete quality. The widespread use of concrete materials as building structures necessitates a re-evaluation of the impact of deficiency of concrete quality on reinforcement requirements and structural seismic performance of buildings. The deficiency of concrete quality is regulated by SNI 2847:2019, which states that a maximum permissible deficiency found is at 25% of design strength. This research was conducted on an eight-story single-span building with variations in deficiency of concrete quality in columns at 7,5%, 15%, and 25% from design strength. The research object was designed using SNI 2847:2019 using special moment-resisting frame system then evaluated using analysis based on ASCE 41-17, incorporating design and maximum earthquake. From these variations, it was found that a 25% deficiency in column concrete quality from design strength resulted in an increase in column reinforcement requirements by up to twice the design reinforcement, and some columns experienced a reduction in seismic performance."

"In this book, a critical analysis is made on service life models related to reinforcement corrosion. The contributors are on the frontier of knowledge in the field of durability of reinforced concrete. Topics covered in the book include: causes and mechanisms of deterioration, transport mechanisms in concrete, numerical modeling of concrete behavior, durability modeling and prediction, reliability approach to structural design for durability, structural behavior following degradation of concrete structures, deterioration and repair of concrete structures, and corrosion measurement techniques.;In this book, a critical analysis is made on service life models related to reinforcement corrosion. The contributors are on the frontier of knowledge in the field of durability of reinforced concrete. Topics covered in the book include: causes and mechanisms of deterioration, transport mechanisms in concrete, numerical modeling of concrete behavior, durability modeling and prediction, reliability approach to structural design for durability, structural behavior following degradation of concrete structures, deterioration and repair of concrete structures, and corrosion measurement techniques."

"This volume contains the proceedings of the 8th International PhD Student Workshop on Service Life and Durability of Reinforced Concrete Structures that was held in Marne-la-Vallee, France, on September the 26th and 27th 2016.Topics discussed in the book are related to durability performance of reinforced concrete, service life modelling, prevention, protection and repair.Reinforced concrete structures may prove to be very durable, however, their gradual degradation over time impairing both serviceability and structural safety is still a matter of great practical concern in view of the large economic consequences for assessment, maintenance and repair. Corrosion of steel reinforcement is considered to be the most detrimental process responsible for structural deterioration.Many studies are in progress to develop a comprehensive engineering approach for assessment of the initiation and the propagation period of corrosion in both uncracked and cracked concrete. Modelling of chloride penetration and carbonation has attracted a great deal of attention in recent years, however, there is still much debate on several essential aspects such as the chloride threshold level. ASR, and acid, sulphate and frost attack and other mechanisms remain important areas of study. In addition, the interaction between different degradation mechanisms requires further understanding.The worskhop was organised under the auspices of RILEM EAC (Educational Activities Committee), with the aim to bring together young researchers in the field of durability of concrete."

"Infrastruktur transportasi di Indonesia saat ini mengalami perkembangan yang pesat. Hingga saat ini, terdapat 18.990 unit jembatan nasional di Indonesia. Namun, hanya 1.2% dari total keseluruhan tersebut yang berada dalam kondisi baik. Sehingga diperlukan adanya pemeliharaan dan perawatan untuk menjaga kualitas agar tetap optimal untuk digunakan. Pedoman menjadi salah satu acuan yang digunakan dalam pekerjaan pemeliharaan dan perawatan. Saat ini, sudah terdapat pedoman yang digunakan, tetapi tidak membahas secara detail. Maka dari itu, diperlukan adanya pengembangan pedoman pemeliharaan dan perawatan yang berbasis WBS untuk memudahkan proses pemeriksaan, pemeliharaan, dan juga perawatan pada komponen struktur bawah jembatan beton. Penelitian ini bertujuan untuk mengembangkan pedoman pemeliharaan dan perawatan pada pekerjaan struktur bawah jembatan beton yang berbasis work breakdown structure (WBS) untuk meningkatkan kinerja pemeliharaan dan perawatan. Hasil dari penelitian ini adalah pedoman pelaksanaan pemeliharaan dan perawatan komponen struktur bawah jembatan beton yang berbasis work breakdown structure (WBS) untuk 44 klaster elemen serta model hubungan antara work breakdown structure (WBS) dan pedoman pemeliharaan dan perawatan dengan kinerja pemeliharaan dan perawatan. Dengan adanya pengembangan pedoman akan memengaruhi peningkatan kinerja struktur bawah jembatan, terutama pada aspek durabilitas dan kondisi umum jembatan.

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Indonesia's transportation infrastructure is currently undergoing rapid development. Presently, there are 18,990 national bridges across the country, but only 1.2% of these are in good condition. Consequently, maintenance and repair are essential to ensure their quality remains optimal. Guidelines play a crucial role in directing maintenance and repair activities. Although existing guidelines are available, they lack detailed coverage. Therefore, there is a need to develop maintenance and repair guidelines based on a Work breakdown structure (WBS) to streamline the inspection, maintenance, and care processes for the substructure components of concrete bridges. This research aims to develop maintenance and upkeep guidelines for the substructure work of concrete bridges based on the Work breakdown structure (WBS) to improve maintenance and repair performance. The outcome of this research is the implementation guidelines for the maintenance and repair of the substructure components of concrete bridges based on WBS for 44 element clusters, as well as a model showing the relationship between the Work breakdown structure (WBS) and the maintenance and repair guidelines with their performance. The development of these guidelines will impact the improvement of the substructure performance of bridges, particularly in terms of durability and overall condition."

"Indonesia memiliki ribuan jembatan nasional dan tercatat hanya 1% diantaranya berada dalam kondisi baik. Kondisi ini mengancam keamanan dan ketahanan infrastruktur jembatan. Upaya pemeliharaan dan perawatan diperlukan untuk menjaga jembatan tetap aman. Penerapan Sistem Manajemen Mutu (SMM) dan Building Information Modelling (BIM) diharapkan dapat meningkatkan kualitas, ketepatan dan kecepatan dalam pemeliharaan dan perawatan jembatan beton. Pengembangan SMM yang dilakukan bertujuan untuk mendapatkan sebuah dokumen lengkap yang memuat enam komponen penting dalam manajemen mutu yang patuh terhadap regulasi yang berlaku. Sejalan dengan hal tersebut, penelitian ini juga turut mengintegrasikan penggunaan BIM dengan SMM pada pekerjaan pemeliharaan dan perawatan jembatan beton. Integrasi BIM dilakukan untuk mengakselerasi kinerja pemeliharaan dan perawatan jembatan beton dengan melibatkan teknologi dan sistem digital yang berkembang saat ini. Penelitian dilakukan dengan penggunaan data historis dan survey untuk pengembangan model BIM dilanjutkan dengan validasi konten kepada pakar/ahli untuk mengetahui ketepatan dalam mengintegrasikan SMM dan BIM pekerjaan pemeliharaan dan perawatan jembatan beton. Dari penelitian ini diperoleh sebuah produk menggunakan studi kasus Jembatan X yang melibatkann penggunaan website dalam pengintegrasian.

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Indonesia has thousands of national bridges, and only 1% of them are recorded to be in good condition. This situation threatens the safety and resilience of bridge infrastructure. Maintenance and repair efforts are necessary to keep bridges safe. The implementation of a Quality Management System (QMS) and Building Information Modelling (BIM) is expected to improve the quality, accuracy, and speed of maintenance of concrete bridges. The development of the QMS aims to produce a comprehensive document that includes six important components of quality management that comply with applicable regulations. In line with this, the research also integrates the use of BIM with the QMS in the maintenance of concrete bridges. The integration of BIM is carried out to accelerate the performance of concrete bridge maintenance and repair by involving current digital technology and systems. This research is conducted using historical data and surveys for the development of the BIM model, followed by content validation by experts to determine the accuracy of integrating the QMS and BIM in concrete bridge maintenance. From this research, a product was obtained using a case study of Bridge X, which involves the use of a website for integration."

"ABSTRAKSalah satu hasil kemajuan dan perkembangan teknologi dibidang konstruksi adalah dengan penerapan beton pracetak untuk komponen bangunan gedung seperti pelat lantai, balok dan kolom. Dengan kemajuan teknologi beton pracetak diharap mampu menjawab tantangan industrialisasi yang menuntut hasil kerja yang efisien, efektif, bermutu dan ekonomis. Hal ini disebabkan oleh banyaknya kelebihan yang dimiliki oleh beton pracetak, seperti kecepatan pekerjaan kualitas produksi yang lebih terkontrol. Akan tetapi setiap pemilihan metode konstruksi dan teknologi yang digunakan harus mempertimbangkan faktor resiko yang berhubungan dengan teknologi tersebut, termasuk dalam penerapan beton precast sebagai salah satu metode konstruksi pada suatu proyek. Pendekatan profesional terhadap risiko adalah dengan proses penilaian risiko yang mencakup memahami, mengidentifikasi, dan mengevaluasi risiko yang berhubungan dengan metode konstruksi pada suatu proyek, dalam hal ini penerapan teknologi beton pracetak pada bangunan gedung. Selanjutnya mempertimbangkan apa yang akan dilakukan terhadap risiko yang telah dipahami dampaknya. Risiko mungkin dialokasikan kepada pihak lain atau kemungkinan suatu risiko dikurangi melalui asuransi yang sesuai.

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