N S Moorthy, DicoTech LLC, Concrete Repairs and Engineering, UAE
Condition AssessmentWhat is condition assessment? It is systematic and logical examination of a structure to identify the cause of the distress. The examination would cover visual inspection, checking of documents; such as drawings, construction records, previous investigation reports (if any), determination of the time of appearance of the defect and analyzing the test reports. Many times one would come across that many of these may not be available! But still one has to find ways and means of overcoming this.
Nature of DistressesVarious kinds of distresses that we come across normally largely cover cracks Fig 1.
Figure 1: Cracks
And the cracks could be due to many reasons. Shrinkage cracks, plastic shrinkage cracks, plastic settlement cracks, early heat of hydration cracks, long-term thermal shrinkage cracks, excess stresses in flexure, tensile, shear, punching etc. are the nature of cracks to name a few. It could also be due to corrosion of reinforcement or unequal foundation settlement.
Besides cracks, there are other symptoms of leakages, seepages, discoloration and pigmentation of concrete. i.e. stains on concrete could also lead to important conclusions.
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