Electrochemical incompatibility of patches in reinforced concrete

The annual expenditure for repair and rehabilitation of concrete structures exceeds 50 percent of the total construction costs. It is expected that this trend will continue at least to the year 2000. The large market for repair materials and specialized techniques has driven the need for substantial research and development targeted at improved performance and extended service life. Issues include the development of new durable materials, repair material compatibility, and suitability of materials for specific environments.Les d\ue9penses annuelles li\ue9es \ue0 la r\ue9fection et \ue0 la r\ue9habilitation des structures en b\ue9ton d\ue9passent 50 % des co\ufbts totaux de la construction, et l?on s?attend \ue0 ce que cette tendance se maintienne au moins jusqu?\ue0 l?an 2000. Le march\ue9 important que repr\ue9sentent les mat\ue9riaux de r\ue9fection et les techniques sp\ue9cialis\ue9es constitue le moteur d?une recherche et d?un d\ue9veloppement substantiels visant l?am\ue9lioration de la performance et la prolongation de la dur\ue9e de vie utile des ouvrages. Les questions abord\ue9es comprennent la mise au point de nouveaux mat\ue9riaux durables, la compatibilit\ue9 des mat\ue9riaux de r\ue9fection et l?ad\ue9quation des mat\ue9riaux dans des milieux pr\ue9cis.Peer reviewed: YesNRC publication: Ye