Case Studies of Rehabilitation, Repair, Retrofitting, and Strengthening of Structures

2010 ◽  
Keyword(s):  
Environmental Economic ◽  
Case Studies ◽  
Efficient Solutions ◽  
Economic Factors ◽  
Technical Problems ◽  
Existing Structures ◽  
Structural Types ◽  
Materials Used ◽  
Structural Engineers ◽  
Existing Structure

<p>This document provides case studies of structural rehabilita-tion, repair, retrofitting, strengthening, and upgrading of structures, which might be encompassed – in short – by the convenient umbrella terms “Conservation / Upgrading of Existing Structures”. The selected studies presented in this SED cover a variety of structural types from different countries.</p> <p>Strengthening and rehabilitation of structures is usually a challenge because of uncertainties associated with old struc-tures and difficulties due to restrictions on the geometry and materials used, as well as other structural or functional con-straints. When repairing an existing structure the engineers involved have plenty of possibilities, lots of constraints, and in some cases there are no applicable codes. Strengthening and rehabilitating is sometimes a complex and exciting work; an art.</p> <p>The book is a summary of practices to help structural engineers. The reader of this book will discover different approaches to put forward strengthening or rehabilitation projects. Even identical technical problems could have very different efficient solutions, as discussed in the papers, considering structural, environmental, economic factors, as well as contractor and designer experience, materials, etc.</p>

scholarly journals Strengthening Effect of the External Prestressing Method That Simulated a Deterioration Bridge

2021 ◽  
Vol 11 (6) ◽  
pp. 2553
Author(s):  
Sang-Hyun Kim ◽  
Jong-Sup Park ◽  
Woo-Tai Jung ◽  
Jae-Yoon Kang
Keyword(s):  
Compressive Strength ◽  
Strengthening Effect ◽  
Reinforcement Effect ◽  
Loading Test ◽  
Yield Load ◽  
Existing Structures ◽  
External Prestressing ◽  
The Difference ◽  
Existing Structure ◽  
Strengthening Method

Various methods for strengthening existing structures have been developed owing to the increase in human and property damages caused by the deterioration of structures. Among the various reinforcing methods, the external prestressing method increases the usability and safety of a structure by directly applying tension to the weak tensile area that suffers the greatest deflection during the structure usage. The external prestressing method is advantageous in reducing cracks caused by the introduced tension and restoration of the deflection. Since the strengthening method is applied to deterioration bridges, the strengthening effect is affected by the condition of the existing structure. However, studies on the strengthening effect according to the degree of deterioration are insufficient. Therefore, the behavior according to the strengthening status was analyzed, and the strengthening effect was identified in this study by simulating the deteriorated bridge, reducing the compressive strength and reinforcement quantity, and conducting a four-point loading test. As a result of the experiment, a reinforcement effect of 215% crack load, 161% yield load, and the difference in behavior according to the reinforcement parameters were confirmed.

Rethinking Waste Through Design

2021 ◽  
pp. 449-459
Author(s):  
Caroline O'Donnell ◽  
Dillon Pranger
Keyword(s):  
Case Studies ◽  
Construction Industry ◽  
Recycled Materials ◽  
Sustainable Practices ◽  
The Us ◽  
Materials Used ◽  
Made In

This chapter will study the proliferation of architectural follies that use recycled or recyclable materials in a move to promote better practices in waste and recycling. Given the slow uptake of this impetus in the architectural world proper, the text will investigate the obstacles in engaging in materially sustainable practices in the construction industry as well as case studies for rethinking currently problematic materials. However, while some improvements have been made in the construction industry's use of recycled materials, the industry often dismisses the afterlife of materials used throughout the process. What are the motivations of the industry and how can we incentivize circular thinking in an industry that produces hundreds of millions of tons of waste per year in the US?

Multilayered Distribution System in India

2012 ◽  
pp. 116-145
Author(s):  
Sumeet Gupta ◽  
Tushar Agrawal ◽  
Priyanka Jain ◽  
Dolly Jaisinghani ◽  
Ritika Rathi
Keyword(s):  
Supply Chains ◽  
Case Studies ◽  
Distribution System ◽  
Distribution Systems ◽  
Pharmaceutical Products ◽  
Efficient Solutions ◽  
Electronic Products ◽  
Multilayered System ◽  
Perishable Goods ◽  
To Come

This chapter presents several case studies of the multilayered system in India and shows how the prevalent distribution system preclude any means of cost reduction and making these supply chains efficient. Supply chains of perishable goods, electronic products, FMCG products and Pharmaceutical products are discussed in this chapter. Each of these supply chains present unique challenges and issues that need attention. The three main objectives in these studies are to understand the distribution systems as well as cost economics of the supply chains, identify potential conflicts and issues in their distribution system, and to study the effect of macro-environment on the distribution system. Apart from these objectives, these cases are also meant to prepare those venturing into such supply chains to come up with efficient solutions for improving these supply chains.

scholarly journals The Importance of the Participatory Dimension in Urban Resilience Improvement Processes

2020 ◽  
Vol 12 (18) ◽  
pp. 7305 ◽  
Author(s):  
Maria LopezDeAsiain ◽  
Vicente Díaz-García
Keyword(s):  
Environmental Economic ◽  
Urban Environment ◽  
Case Studies ◽  
Citizen Participation ◽  
Future Development ◽  
Circular Economy ◽  
Urban Regeneration ◽  
Urban Resilience ◽  
The Impact ◽  
Regeneration Processes

This article discusses the approach adopted by the researchers into citizen participation in urban regeneration actions and projects. It describes the concepts of sustainability and habitability in relation to the urban environment and architecture within the framework of improving the resilience of our cities through the circular economy and decarbonisation processes in architecture. The authors review the participatory dimension of different urban regeneration actions carried out in Spain and the impact of this dimension on the results obtained by environmental, economic and social urban improvements. They then define possible strategies and methodological tools for integrating this dimension into traditional urban regeneration processes. The article presents case studies and their specific characteristics, and draws conclusions about their effectiveness and relevance. It also compares citizen-led interventions with interventions led by public administrations. Lastly, the authors analyse the potential reasons for success in these processes and projects, identifying weaknesses and proposing possible strategies for future development by researchers.

Applications of X-ray microdiffraction in the imaging industry

2006 ◽  
Vol 21 (2) ◽  
pp. 91-96 ◽  
Author(s):  
Thomas N. Blanton
Keyword(s):  
Case Studies ◽  
Digital Imaging ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microstructure Morphology ◽  
Materials Used ◽  
Characterization Of Materials

Characterization of materials used in the digital imaging industry has been performed using micro X-ray diffraction (microXRD) techniques. Case studies are described that demonstrate the use of microXRD for identification of phases, texture, and microstructure morphology of components used in imaging applications.

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