Performance of patch repairs on historic concrete structures: a preliminary assessment

Abstract

Carrying out patch repairs to historic concrete buildings and structures needs to be done carefully if their cultural value and significance is to be maintained. This often means repairs using custom designed materials and mixes for compatibility with the original concrete, and with great care paid to good workmanship. But with most repairs, commercial mixes are used which are not compatible with the host concrete but are justified because they adhere well, cure quickly and require limited skills to implement. A research collaboration has been established to test the performance of both approaches. The Performance Evaluation of Patch Repairs on Historic Concrete Structures (PEPS) began in 2018 and is a collaboration between the Getty Conservation Institute, Historic England and the Laboratoire de Recherche des Monuments Historiques. Its purpose is also to better understand key design and specification parameters and application methods. The research is based on assessing case studies in USA, England and France within a variety of climatic and environmental conditions, typologies and repair materials. This paper will present the methodology adopted to evaluate the repairs in the first phase. This will also include historical research on the specification and application of the repairs, preliminary field assessment and some testing.

Performance evaluation of patch repairs on historic concrete structures (PEPS): a methodology for in situ and laboratory analyses

“…Results from these phases will be presented in subsequent publications. Additional information regarding the background and development of the project can be found in previous publications [1,2,3].…”

Performance evaluation of patch repairs on historic concrete structures (PEPS): a bibliographic review of patch repair durability

“…The goal of the PEPS project 'Performance Evaluation of Patch Repairs on Historic Concrete Structures' is to evaluate the performance of patch repairs on exposed concrete in historic structures and buildings in order to better understand the key design and specification parameters and application methods required for a successful conservation approach [9]. This project started in 2018 bringing together three institutions from three countries: the Getty Conservation Institute (GCI) from the United States, Historic England (HE) from the United Kingdom and the Laboratory of Research on Historical Monuments (LRMH) from France.…”

Performance evaluation of patch repairs on historic concrete structures (PEPS): Preliminary results from a selection of French case studies

“…The project federates 3 teams: the Getty Conservation Institute of Los Angeles (GCI), the Historic Buildings and Monuments Commission for England (HE) and the Laboratory of Research on Historical Monuments (LRMH) and is a continuation of the Conserving modern architecture initiative, for which the GCI had already solicited concrete experts in 2013 and 2014, among which is the LRMH concrete department. The PEPS project is based on experience feedback from a panel of conservation works carried out on historic monuments in the three partner countries: France, the United Kingdom and the United States [2].…”