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Structural Health Monitoring

Smart Structural Health Monitoring

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I would like to start this by a very simple example: that infrastructure facilities work very similar our body. When they are first built (i.e. like when we are at our young age), they operate at their best. Just a routine checkup is all you need to keep up the good form. As they get older, more problems start to appear; and when are old (at the end of their… Read More »Smart Structural Health Monitoring

Nondestructive Reliability Assessment of Structures

Nondestructive Reliability Assessment of Structures

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What is the most reliable and appropriate method for evaluating a structure? Well, that is the question we have been facing a lot lately. Clients ask for the affordable, yet precise methods to evaluate the safety and reliability of their capital intensive assets. In order to understand the situation, one needs to understand the economy of the structure under investigation, that is how far our inspection and evaluation methods can… Read More »Nondestructive Reliability Assessment of Structures

NDT Methods for Quality Control of FRP Installation

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Fiber Reinforced Polymer (FPR) materials are utilized to improve flexural strength, shear strength, and ductility of existing sub-standard structures. Concrete elements strengthened by FRP sheets at tension zone are good example. FPRs improve the tensile strength of concrete. Another great example is to improve the flexural capacity of columns through lateral confinement.   Problematic of FRP Installation Despite the advances in frp material design and fabrication, the quality control and… Read More »NDT Methods for Quality Control of FRP Installation

NDT Techniques

5 NDT Methods for Structural Evaluation

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NDT methods can be used in routine inspection projects; they can be used to follow up the state of damages in periodical checks. The other advantage of NDT methods is that they can be performed by minimum intervention to the structure. This helps prevent aggravating the problems in already damaged structure. NDT methods can be used to assess the condition of elements that do not have easy access. One example… Read More »5 NDT Methods for Structural Evaluation

2 Techniques for Seismic Repair and Retrofit

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Every structure has a service life -that is the expected lifetime, or the acceptable period of use in service. To ensure the smooth performance of the structure in its service life, a comprehensive maintenance plan is needed. Seismic Repair and retrofit is a core part of maintenance plan for areas with high seismic activity. In this article, we will review some aspects of seismic repair and retrofit, and how different materials can… Read More »2 Techniques for Seismic Repair and Retrofit

inspection and evaluation of sructures

Ontario Structure Inspection Manual

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Ontario Structure Inspection Manual The Ontario Structure Inspection Manual has been used for bridge inspections in Ontario since 1985. The manual underwent significant modifications in the year 2000 (OSIM, 2008). This FAQ provides general definitions and terminology used in the OSIM 2008. [hrf_faqs]

DETERIORATION OF CONCRETE

Deterioration of Concrete Structures

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Deterioration of reinforced concrete structures can happen for a number of reasons. Physical and Chemical processes can impact durability and structural performance of the concrete. Defects in design, materials, workmanship, curing and maintenance can all impact the service life, safety and reliability of an element. In this article, we will review some of the most common types of deterioration mechanisms in concrete. Share on linkedin Share on facebook Share on… Read More »Deterioration of Concrete Structures

Damaged Bridges

How to Test Damaged Bridges?

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Damaged Bridges are a major concern in the maintenance and operation of transportation infrastructure. Bridge structures in North America were mainly developed in the 1960’s and 1970’s and are rapidly approaching the end of their initial service life. Major mega cities in North America spend millions of dollars each year to keep these structures safe and functional. According to the ASCE 2013 report card, “one in nine of the US bridges are… Read More »How to Test Damaged Bridges?

Structural Effects of Corrosion

Structural Effects of Corrosion

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Share on linkedin Share on facebook Share on twitter Share on telegram Share on whatsapp Share on email Corrosion of steel reinforcement is often investigated in the context of the durability performance of the structure; however, corrosion can equally impact the structural performance. Steel corrosion may result in reduced flexural capacity (loss of rebar cross section), reduced bond, and limited ductility. In this article, we will review some of the… Read More »Structural Effects of Corrosion

shear wall

Major Techniques for Modeling Shear Walls

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Modeling Shear Walls Modeling shear walls have changes during the last two decades. Analyses techniques have moved from linear static to nonlinear dynamic, enabling more realistic modeling and simulations. Different approaches for modeling shear walls span from macro models such as modified beam-column elements, to micro models such as 3D finite element models. An appropriate modeling technique should: Be capable of predicting the inelastic response   Incorporating important materials characteristics Simulate… Read More »Major Techniques for Modeling Shear Walls