Category: Construction Industry

How to Schedule an Internal Pile Excavation

November 27, 2017

Construction Industry

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Identify What Needs to Be Done
When you require an internal pile excavation, it’s important to identify what needs to be done. Every company has different needs. Until you are able to vocalize exactly what needs to be done on your premises, it will be difficult for a company to understand what needs to be done.

The scope of the project should include as many specifications as possible. For example, if you need the interior walls of cassions clean and excavated, you should also know the measurements. If you know the materials within the file, they should be identified as well.

Every now and then, materials will develop inside of a pile. You want to make sure that the material is captured so that you can achieve 100% containment. Otherwise, you run the risk of contaminating the body of water that your piles are located in.

Find the Right Company
Just like no two projects are exactly the same, dredging companies also vary dramatically. This is why it’s imperative that you work with the right company based upon what you need done. Some will focus solely on deep water dredging while others specialize in internal pile excavation. As such, you want to look at what the company has done in the past and what their experience is.

There’s nothing wrong with asking a lot of questions. It will allow you to learn more about what the company is capable of and what they can do for you. Although you might have an idea as to what the process is, let the company explain it to you. This way, you can make sure that they are and your needs and you can see the type of action they will take. Excavator systems will vary dramatically. You want to make sure that they use frac tanks so that the spoils are captured. Additionally, you want to make sure they have personnel that can successfully complete the job so that you don’t experience any kind of contamination issues.

You might want to find out from the company who else they have helped in the past. Get a name and number of that you can call one of their past clients and learn more about what they were able to do and what they thought of the job done. It will make it easier for you to achieve your goals in regards to internal pile excavation.

Establish an Ongoing Schedule
Once you have chosen the right company, you then need to establish an ongoing schedule. Most likely, you will need to make sure that the pile excavation is done on a regular basis. How often will be determined by a number of factors. This is when you need to rely on the expertise of the company that you have chosen.

How To Fight Reinforcement Corrosion In Bridge Infrastructure

November 27, 2017

Construction Industry

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The aging and structurally deficient concrete infrastructure is one of the serious and expensive problems faced by public and construction agencies worldwide. In the past few decades, the construction industry has focused primarily on designing corrosion prevention and control systems for roads, bridges, plants, waterside buildings, water tanks, etc. As the old and deteriorated infrastructure reaches the end of its expected lifetime, governing authorities put emphasis on rehabilitating and extending the life of these structures.

In the US, there are approximately 600,000 bridges and the majority of them are steel-reinforced. More than 15% (ref Rita) of bridges are structurally deficient due to the corrosion of reinforced steel. Governments spend billions of dollars annually as a corrosion cost to replace and rehabilitate the deteriorated bridges. Corrosion is the primary factor affecting the reliability and durability of concrete members. It is difficult, if not impossible, to control corrosion-induced deterioration process using conventional materials and construction techniques.

Direct corrosion cost is in billions, but the indirect costs in forms of traffic delays and user inconvenience increase expenses tenfold. The bridge management authorities usually have limited funds to deal with new constructions, rehabilitation activities, and maintenance. Therefore, it is important to develop and utilize modern materials capable of eliminating the corrosion-related problems permanently and cost-effectively.

The civil engineering community and researchers and have been striving to develop reliable technologies and construction practices to control corrosion-related issues for decades. The development and incorporation of corrosion control strategies still demand widespread changes in government policies and industry management.

Effective corrosion solutions

FRP composites are emerging construction materials of the 21st century. These materials have the potential to construct corrosion-free concrete members no matter the environment. For instance, GFRP reinforcement rebar, a variant of FRP composites, offers practitioners and bridge engineers a solid alternative to resolving practical problems of steel-reinforcement in the harsh environment and where electrical and magnetic sensitivity is a concern. The advanced composite materials can be used in both new and rehabilitation applications. The implementation of these sustainable construction materials can save billions of dollars.

As a sustainable construction material, GFRP reinforcement offers high strength, corrosion-resistance, fatigue-resistance, consistent quality and extended service life. In-practice data and studies have concluded that structural performance of FRP composites is far better than conventional materials. Design guidelines of FRP for bridge applications have been considerably developed and incorporated into existing ACI guides. The civil engineering community should explore and implement FRP technology at large scale in order to build maintenance-free and long lasting concrete structures.