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Ditemukan 15 dokumen yang sesuai dengan query
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Lin, Tung Yen
New York: John Wiley & Sons, 1960
693.542 LIN d
Buku Teks SO  Universitas Indonesia Library
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Rudolfus Rivaldo Raharja
"Dalam beberapa tahun terakhir, permintaan akan bekisting untuk pekerjaan struktur beton mengalami peningkatan yang signifikan, memicu pengembangan berbagai sistem dan metode bekisting dengan menggunakan berbagai jenis material, termasuk kayu, logam, dan polimer HDPE. Penelitian ini bertujuan untuk mengamati dan mengevaluasi kinerja bekisting berbahan dasar polimer HDPE pada elemen struktur beton vertikal dalam proyek konstruksi di Indonesia. Penelitian ini menggunakan data primer yang dikumpulkan melalui observasi lapangan dan dokumentasi proyek, serta data sekunder dari studi literatur. Hasil penelitian menunjukkan bahwa papan bekisting Polimer HDPE mampu memberikan hasil pengecoran yang baik. Kapasitas produksi menggunakan papan bekisting Polimer HDPE mendekati atau sesuai dengan standar kapasitas pekerja bekisting metode semi sistem dinding, menunjukkan efektivitas dalam mempertahankan efisiensi kerja. Analisis biaya menunjukkan bahwa meskipun Polimer HDPE memiliki biaya awal yang lebih tinggi dibandingkan multipleks dan polyfilm, biaya jangka panjangnya lebih ekonomis karena ketahanannya yang tinggi dan biaya pemakaian yang konsisten. Secara keseluruhan, bekisting berbahan dasar Polimer HDPE adalah pilihan yang efektif dan efisien untuk pekerjaan bekisting dalam proyek konstruksi yang memerlukan material tahan lama dan ekonomis dalam jangka panjang.

In recent years, the demand for formwork for concrete structures has significantly increased, prompting the development of various formwork systems and methods using different materials, including wood, metal, and HDPE polymer. This research aims to observe and evaluate the performance of HDPE polymer-based formwork in vertical concrete structural elements in construction projects in Indonesia. The research utilizes primary data collected through field observations and project documentation, as well as secondary data from literature studies. The results show that HDPE polymer formwork panels can provide good casting results. The production capacity using HDPE polymer formwork panels is close to or in line with the standard capacity of workers using the semi-system wall formwork method, demonstrating effectiveness in maintaining work efficiency. Cost analysis indicates that although HDPE polymer has a higher initial cost compared to multiplex and polyfilm, its long-term cost is more economical due to its high durability and consistent usage costs. Overall, HDPE polymer-based formwork is an effective and efficient choice for formwork work in construction projects that require durable and long-term economical materials."
Depok: Fakultas Teknik Universitas Indonesia, 2024
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UI - Skripsi Membership  Universitas Indonesia Library
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London: The Institution of Civil Engineers, 1968
624.183 PRE c
Buku Teks SO  Universitas Indonesia Library
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Daniel Janthinus Kristianto
"Pemanfaatan dross aluminium sebagai pengganti sebagian pasir untuk bahan baku pembuatan beton pada lingkungan asam (HCl), diharapkan meningkatkan mutu beton sehingga dapat meningkatkan ketahanan asam dengan memperlambat degradasi beton akibat larutan asam (HCl). Penggunaan dross aluminum sebagai pengganti bahan pasir dengan kandungan 0%, 5%, 8% dan 16% memberikan fenomena dimana kandungan maksimal dross aluminium sebagai campuran pengganti pasir pada beton yang disarankan tidak mencapai angka 16 %. Hal ini disebabkan peninkatan kandungan nano partikel aluminium dengan area permukaan yang lebih luas sehingga membuat penyerapan air yang lebih besar yang membuat beton tidak mengeras sempurna dan hancur. Penambahan dross aluminium berbanding terbalik dengan penurunan nilai densitas beton yang berbanding lurus dengan peningkatan prosentase kandungan rongga udara dalam struktur beton. Pemuaian juga terjadi pada beton dengan dross aluminium, yang mengakibatkan penurunan kekuatan tekan. Perlakuan immerse-dry pada beton dengan variasi 4, 8, dan 12 hari untuk mengetahui ketahanan beton terhadap asam (HCl) dipengaruhi oleh kadar dross aluminium dalam beton. Beton dengan kandungan dross aluminium lebih tinggi memiliki ketahanan yang lebih baik dalam larutan asam. Beton dengan kandungan dross aluminium 0 % selama 12 hari mendapatkan prosentase tertinggi untuk pengikisan sebesar 10.14 % sedangkan beton dengan kandungan dross aluminium sebesar 8 % mengalami pengikisan hanya sebesar 4.09 %. Biaya yang dibutuhkan akan lebih menguntungkan untuk bangunan penyimpanan asam dengan menggunakan dross aluminium sebagai campuran. Perhitungan didapatkan dari perbandingan beton 0 % dross aluminium dan dengan menggunakan 8 % dross aluminium.

The use of aluminum dross as a partial substitute for sand as raw material for making concrete in an acidic environment (HCl), is expected to improve the quality of concrete so that it can increase acid resistance by slowing down the degradation of concrete due to acid solution (HCl). The use of dross aluminum as a substitute for sand with a content of 0%, 5%, 8% and 16% gives a phenomenon where the maximum content of aluminum dross as a mixture of sand substitutes in the recommended concrete does not reach 16%. This is due to the increase in the content of aluminum nanoparticles with a wider surface area, resulting in greater water absorption which makes the concrete unable to harden completely and crumble. The addition of aluminum dross is inversely proportional to the decrease in the density of concrete which is directly proportional to the increase in the percentage of air voids in the concrete structure. Expansion in concrete also occurs in concrete with aluminum dross which causes a decrease in compressive strength. Immerse-dry treatment of concrete with variations of 4, 8, and 12 days to determine the resistance of concrete to acid (HCl) is affected by the aluminum dross content in the concrete. Concrete with a higher dross aluminum content has better resistance in acid solutions. Concrete with 0% aluminum dross content for 12 days got the highest percentage for erosion of 10.14% while concrete with 8% aluminum dross content experienced only 4.09% erosion. The required cost will be more profitable for acid storage buildings using aluminum dross as a mixture. Calculations are obtained from the ratio of 0% aluminum dross concrete and by using 8% aluminum dross. "
Depok: Fakultas Teknik Universitas Indonesia, 2021
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UI - Tesis Membership  Universitas Indonesia Library
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Clark, John E.
New York: McGraw-Hill, 1983
624.183 4 CLA s
Buku Teks SO  Universitas Indonesia Library
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Lin, Tung Yen
New York: John Wiley & Sons, 1982
624.183 4 LIN d
Buku Teks SO  Universitas Indonesia Library
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Michigan: American Concrete Institute, 1977
624.183 42 REI (1)
Buku Teks SO  Universitas Indonesia Library
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Ohio: Master Builders, 1983
620.136 MAS c
Buku Teks SO  Universitas Indonesia Library
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Muhammad Gezha Setiawan
"Penerapan material beton berkelanjutan di Indonesia penting dan sangat bermanfaat bagi pembangunan infrastruktur dalam aspek ekonomi, sosial dan lingkungan. Struktur beton yang berkelanjutan adalah struktur yang didesain sehingga dampak total selama seluruh siklus hidupnya minimal. Merancang dengan pondasi yang berkelanjutan termasuk menentukan konsekuensi jangka pendek dan jangka panjang. Setiap pemangku jabatan di dunia konstruksi bertanggung jawab untuk memastikan prinsip berkelanjutan termasuk kontraktor yang memimpin keterlibatan dalam pelaksanaan konstruksi berkelanjutan. Oleh karena itu, tujuan dari penelitian ini adalah untuk memahami kesadaran dan pengetahuan kontraktor tentang implementasi material beton berkelanjutan di proyek infrastruktur Indonesia. Kesadaran kontraktor terhadap implementasi material beton yang berkelanjutan akan meningkatkan minat mereka dan secara langsung mempengaruhi tingkat pengetahuan. Metode yang digunakan dalam penelitian ini adalah validasi ahli terhadap variabel penelitian, pilot survey dan survey kuesioner pengetahuan dan tingkat kepentingan mengenai indikator material beton berkelanjutan. Hasil penelitian menunjukkan bahwa kontraktor di Indonesia sudah mengetahui dan memahami tentang material beton berkelanjutan. Namun mereka tidak menyeimbangkan ketiga pilar keberlanjutan.

The implementation of sustainable concrete material in Indonesia is important and greatly benefits the infrastructure development in economic, social and environmental aspects. A sustainable concrete structure is one that is constructed so that the total impact during its entire life cycle is minimal. Designing with sustainable foundation includes determine in short term and long term consequences. Each stakeholder take responsibility to ensure the sustainable principle including contractor that lead the involvement on the implementation of sustainable construction. Therefore, the aim of this study is to understand the contractor’s awareness and knowledge on sustainable concrete material implementation in indonesia infrastructure project. The contractor’s awareness on sustainable concrete material implementation will increase their interest and directly affect the knowledge level. The method used for the research are expert validation on the research variable, pilot survey and survey questionarie of knowledge and level of importance regarding sustainable concrete material indicator. The result shows that contractors in Indonesia already aware and understand regarding sustainable concrete material. But they not balance the three pillar of sustainability."
Depok: Fakultas Teknik Universitas Indonesia, 2021
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Gu, Xianglin
"Basic Principles of Concrete Structures is one of the key courses for undergraduates
majoring in civil engineering. The objective of this book is to help students to
completely understand the basic mechanical properties and design methods of
structural members made of concrete and reinforcement and to lay the foundation for
future study of the design and construction of various types of reinforced concrete
structures.
The book consists of 12 chapters, i.e., introduction, materials, bond and
anchorage, axially loaded members, flexural members, eccentrically loaded members,
shearing, torsion, punching and local bearing, prestressed concrete members,
serviceability of members, and durability of reinforced concrete structures.
The book is suitable for teachers and college students majoring in civil engineering
and can also be referred by civil engineers.
The textbook is jointly edited by Prof. Xianglin Gu, Prof. Xianyu Jin, and Dr.
Yong Zhou.
As a basic specialty course for undergraduates majoring in civil engineering,
Basic Principles of Concrete Structures is different from either the previously learnt
mechanics courses or the design courses to be learnt. Compared with mechanics
courses, the basic theories of reinforced concrete structures cannot be solely derived
by theoretical analysis. And compared with design courses, this course emphasizes
the introduction of basic theories rather than simply being a translation of design
specifications. That means the course of Basic principles of Concrete Structures
should focus on both theoretical derivation and engineering practice. Therefore,
based on the latest version of designing codes both for buildings and bridges (GB
50010-2010 and JTG D62-2004), the book starts from the steel and concrete
materials, whose properties are very important to the mechanical behavior of
reinforced concrete members. Step by step, the design and analysis of reinforced concrete members under basic loading types (tension, compression, flexure, shearing, and torsion) and environmental actions are introduced. The characteristic
of the book that distinguishes it from other textbooks on reinforced concrete
structures is that more emphasis has been laid on the basic theories of reinforced
concrete structures and the application of the basic theories in design of new
structures and analysis of existing structures. Examples and problems in each chapter are carefully designed to cover every important knowledge point."
New York & Shanghai, China: Springer-Verlag Berlin Heidelberg and Tongji University Press, 2016
e20528467
eBooks  Universitas Indonesia Library
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