Effectiveness Of Ultrasonic Pulse Velocity And Impact Echo Ndt Techniques To Assess The Quality Of Concrete
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Effectiveness Of Ultrasonic Pulse Velocity And Impact Echo Ndt Techniques To Assess The Quality Of Concrete
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Author : Shibli Russel Mohiuddin Khan
language : en
Publisher:
Release Date : 2002
Effectiveness Of Ultrasonic Pulse Velocity And Impact Echo Ndt Techniques To Assess The Quality Of Concrete written by Shibli Russel Mohiuddin Khan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Concrete categories.
The deterioration of concrete in structure is a result of several internal or external degradation mechanism and which results in distress of the structure i.e. decrease in strength and integrity of the structure. the state of distress is often hidden from view and is only evident at a stage where there is significant reduction in strength of the structure. defects are open introduced during construction and are viewed during in services life. Some deterioration is viewed physically in the early age or during the services life of the structure in terms of spalling, surface crack, swelling and honeycombing. This deterioration collectively or individually results in reducing the load carrying capacity in terms of the distress of the structure. In this project, the common defects in the concrete structures and mapping techniques by nondestructive test are presented. Among the various techniques of the nondestructived tests, the Ultrasonic Pulse Velocity (UPV) and DOCtor's impact echo were chosen for their effectiveness. The UPV is used to estimate the concrete strength, detecting flaws such as voids and cracks and also to investigate the effects of smaller diameter bar in the concrete. In detecting various sizea of voids by the Impact-echo test techiniques a format was suggested to identify the from the frequency spectrum. In the bridge condition assessment by nondestructive test techniques most common problem encountered were correlationof cube crushing strength to the UPV values, in order to determine residual strength of the structure in different enviromental conditions. also the other defects such as cracks and voids in the concrete, which does not have any standard guideline to identify them by theabove NDT techniques to use in the bridge condition assessment. This project has dealt with large number of specimens between the actual condition and those of the values given by the NDT results. A number of beam specimens were also cast with known defects in the concrete in order to obtain and suggest standard investigation procedure. 108 standard cubes with different grades and enviromental conditions were cast. Also eight beams and a slab were casting having known common defects. From the strength- UPV correlation nine numbers of regression equations were suggested. A standard transducer spacing has been suggested for detecting crack depth of to 50 to 125mm range. The effect of bar sizes on UPV test results was also obtained. Reinforced concrete slabs or decks having bar diameter greater than 10mm diameter will be affect the reading of UPV. Based on the obtained resuls a computer database system for NDT has been made to accomodate and fulfill necessary requirements of knowledge base system. Hence this knowledge base system will be used for bridge condition assessment.
Assessment Evaluation Of Structure Using Advanced Undistructive Methods
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Author : Dr. Ashad Ullah Qureshi
language : en
Publisher: Concepts Books Publication
Release Date : 2022-06-01
Assessment Evaluation Of Structure Using Advanced Undistructive Methods written by Dr. Ashad Ullah Qureshi and has been published by Concepts Books Publication this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-01 with Education categories.
Reinforced and pre-stressed concrete are widely used for the construction of infrastructures such as bridges, industrial structures, buildings, etc. Most of the time, the quality of the concrete mix is assumed to be guaranteed but due to the congestion of reinforcement and the quality control exercised during placing and vibrating, honeycombs and voids are likely to be present in the hardened concrete. The presence of voids leads to the early deterioration of concrete and corrosion also sets in. The corrosion of reinforcement causes damage to the cover concrete and also section loss in the area of steel. In the case of pre-stressed concrete members, the corrosion leads to a catastrophic failure without any warning. Hence, it becomes necessary to evaluate the condition of concrete using Non Destructive Techniques (NDT) and Partially Destructive Techniques (PDT). The Ultrasonic Pulse Velocity (UPV) method which is widely adopted till now gives the relative quality and integrity of concrete and is based on the transit time. The rebound hammer gives the quality of concrete in the cover zone based on the rebound number.
Smart Cities Opportunities And Challenges
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Author : Sirajuddin Ahmed
language : en
Publisher: Springer Nature
Release Date : 2020-04-20
Smart Cities Opportunities And Challenges written by Sirajuddin Ahmed and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-20 with Technology & Engineering categories.
This book comprises select proceedings of the International Conference on Smart Cities: Opportunities and Challenges (ICSC 2019). The book contains chapters based on urban planning and design, policies and financial management, environment, energy, transportation, smart materials, sustainable development, information technologies, data management and urban sociology reflecting the major themes of the conference. The contents focus on current research towards improved governance and efficient management of infrastructure such as water, energy, transportation and housing for sustainable development, economic growth, and improved quality of life, especially for developing nations. This book will be useful for academicians, researchers, and policy makers interested in designing, developing, planning, managing, and maintaining smart cities.
Insight
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Author :
language : en
Publisher:
Release Date : 1997
Insight written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Nondestructive testing categories.
Proceedings Of The 2nd International Conference On Nondestructive Testing Of Concrete In The Infrastructure
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Author : Society for Experimental Mechanics
language : en
Publisher:
Release Date : 1996
Proceedings Of The 2nd International Conference On Nondestructive Testing Of Concrete In The Infrastructure written by Society for Experimental Mechanics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Concrete categories.
Aci Manual Of Concrete Practice
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Author : American Concrete Institute
language : en
Publisher:
Release Date : 2004
Aci Manual Of Concrete Practice written by American Concrete Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Concrete categories.
Concrete International
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Author :
language : en
Publisher:
Release Date : 1995
Concrete International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Concrete categories.
Ai For Rock Dynamics
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Author : Manchao He
language : en
Publisher: Springer Nature
Release Date : 2025-07-18
Ai For Rock Dynamics written by Manchao He and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-18 with Technology & Engineering categories.
This Open Access book covers various aspects in rock dynamics comprehensively, such as theoretical foundations, testing techniques, dynamic properties, stress wave propagation, rockburst dynamics, numerical simulation, and engineering applications. AI for Rock Dynamics is a groundbreaking Open Access monograph that redefines publishing through Luffa AI, a China-developed large language model (LLM). Set to captivate at the London Book Fair 2025, it marks a transformative milestone in rock mechanics and beyond. Covering theoretical foundations, testing instruments, numerical simulation, and engineering applications, it’s an essential resource for professionals in civil engineering, mining, and geology alike. Its clear presentation, illustrations, and practical insights make it pivotal for tackling rock mechanics challenges. Unique for its homegrown LLM, it showcases Chinese AI’s potential to advance research. As China’s first LLM-powered book, it revolutionizes knowledge production, organization, and dissemination. This landmark was achieved through a strategic partnership between CNPIEC Kexin Technology, CSRME, and Springer Nature, unprecedentedly integrating cutting-edge technology, academic expertise, and global publishing prominence. Published as Open Access, it democratizes knowledge, fostering collaboration and innovation. The first of its kind signifies AI’s potential to transform publishing, streamlining content creation and enhancing dissemination. AI for Rock Dynamics is a beacon of progress, uniting technology and academia to push knowledge boundaries with concerted efforts. Please Join us in celebrating this historic achievement and witness the dawn of AI-powered publishing.
Selected Water Resources Abstracts
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Author :
language : en
Publisher:
Release Date : 1991
Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Water categories.
Handbook Of Metrology And Applications
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Author : Dinesh K. Aswal
language : en
Publisher: Springer Nature
Release Date : 2023-08-23
Handbook Of Metrology And Applications written by Dinesh K. Aswal and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-23 with Technology & Engineering categories.
This handbook provides comprehensive and up-to-date information on the topic of scientific, industrial and legal metrology. It discusses the state-of-art review of various metrological aspects pertaining to redefinition of SI Units and their implications, applications of time and frequency metrology, certified reference materials, industrial metrology, industry 4.0, metrology in additive manufacturing, digital transformations in metrology, soft metrology and cyber security, optics in metrology, nano-metrology, metrology for advanced communication, environmental metrology, metrology in biomedical engineering, legal metrology and global trade, ionizing radiation metrology, advanced techniques in evaluation of measurement uncertainty, etc. The book has contributed chapters from world’s leading metrologists and experts on the diversified metrological theme. The internationally recognized team of editors adopt a consistent and systematic approach and writing style, including ample cross reference among topics, offering readers a user-friendly knowledgebase greater than the sum of its parts, perfect for frequent consultation. Moreover, the content of this volume is highly interdisciplinary in nature, with insights from not only metrology but also mechanical/material science, optics, physics, chemistry, biomedical and more. This handbook is ideal for academic and professional readers in the traditional and emerging areas of metrology and related fields.