How to plan your Concrete Maintenance programme.
As Governments around the globe wrestle with finding the best solutions to combat the coronavirus pandemic, a similar conundrum is being experienced in the construction industry. Deciding upon the most appropriate timing and methods to be adopted when considering any structural concrete manaintance is of the utmost importance.
Undertaken too early and the process may need to be undertaken again, if undertaken too late and the process could involve huge amounts of repair costs or even greater consequences.
Very often the spalling of concrete is considered by many as whilst being unsightly to not have any real detrimental effect to the integrity of that structure.
As we all know concrete is one of the most widely used building products that is used in connection with the construction of major structures. As with most products, concrete, if left unmaintained will over time deteriorate and so will from time to time require maintenance and or repair. The recent and sad events experienced in Miami, serve as an example of this.
The maintenance of concrete in its static state can quite simply range from straightforward cleaning to remove dirt and other deleterious build-ups that are created from within the environment to the re-application of specialist protective coatings, intrusive and non-intrusive testing that enables the performance of the concrete within a structure to be accurately monitored and checked through to repair and or replacement of key elements of concrete that form the structure.
Here at Churchill Concrete Technology, we have the expertise and know-how available to help, advise and guide you around the timing of and provide the most appropriate and economic concrete maintenance regimes. Whether that be a straightforward cleaning solution using our environmentally friendly state of the art cleaning equipment, or accurate and effective surveying and testing solutions, the application of protective coatings, installation of corrosion control measures or the repair and replacement of damaged or deteriorated concrete surfaces.
Please feel free to contact Churchill Concrete Technology Limited via our contact form at www.churchillct.co.uk with all your concrete maintenance enquiries.
What is a concrete condition survey?
Concrete Condition Surveys are a valuable and positive instrument throughout the concrete structure risk management life-cyle. These surveys are generally undertaken to provide either:
- Accurate information upon the likely extent and type of concrete repair works that may be required.
- In-depth detailed information of how the concrete that forms a particular structure is performing
It is the case that through the early involvement of experienced concrete professionals that both potential repair and or maintenance regimes, budgets and specifications can be fundamentally shaped to provide detailed proactive practical assistance for the end-user. Concrete condition surveys generally fall into two categories:
- Non-intrusive visual/delamination survey.
- Detailed intrusive/ electro screening surveys.
Visual / Delamination Survey
Visual /delamination surveys are the most common type of concrete condition survey and are ideal to physically assess and identify deteriorated and damaged concrete surfaces such as cracking, spalling, rust staining, and the like. They are usually complemented using close-quarter careful hammer sounding testing to locate weak and hollow spots across the existing concrete surface. Physical defect details are recorded and referenced, and a quantified assessment of repair works can be established.
The survey can usually be carried out using traditional access techniques or through the use of drone technology.
Detailed intrusive / electro screening surveys
Detailed intrusive / electro screening surveys are commonly used to help better inform how the concrete forming the structure is performing. They are also used to help shape design and maintenance considerations. Ultimately offering accurate assessments of why a particular concrete element may be failing.
By their nature, these surveys are far more detailed than visual surveys and seek to use a combination of scientific and laboratory equipment and analysis. A detailed intrusive survey provides for the physical capture of concrete samples to carry out in-depth relevant tests for things like carbonation depth and chloride ion contamination. Specialist Electro screening or impulse radar scanning equipment provides for the accurate measurement of concrete cover to steel, bar layout and configuration. Half-cell potential and corrosion rate monitoring equipment can be used to determine the risk profile of reinforcing bar corrosion more accurately across a whole structure without the need to break away large areas of concrete to inspect that bar.
All of the above survey techniques can be readily carried out by our experienced teams here at Churchill Concrete Technology. Please feel free to contact our friendly team, we are here to help.