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Performance and service life of repairs of concrete structures in The Netherlands

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Author: Visser, J.H.M. · Zon, Q.F. van
Type:article
Date:2012
Source:3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012, 3 September 2012 through 5 September 2012, Cape Town, 876-881
Identifier: 465233
ISBN: 9780415899529
Keywords: Materials · Buildings and Infrastructure · Built Environment · Building Engineering & Civil Engineering · BM - Building Materials · TS - Technical Sciences

Abstract

In 2010, an inventory to the performance of repairs in the Netherlands has been executed, in response to reported low performances of repairs in Europe. Extensive records were collected concerning, among other, the age of the repairs and their current conditions in a similar way as in the European inventory conducted five years earlier. The results indicate that the failure rates of the Dutch repairs are similar to that of the European failure rates: ca. 20% failed within 5 years and 90% failed within 25 years. The failure of the repairs mostly was contributed to an insufficient execution (50%), in contrast to the European investigation. Here, more than 50% of the failure was contributed to incorrect diagnosis or incorrect design of the repair. The service life of most repairs was difficult to establish since either it had not yet ended or because the precise moment of failure (inside or outside the required service life) could not be established. © 2012 Taylor & Francis Group.