The Digital Construction Agenda: Building Information Modelling & Management
Influence of sampling and methodology for obtaining concrete dust in order to determine chloride concentration profile
To assess the risk of corrosion of reinforcement steel in concrete structures expose to marine or deicing salt environments is required to determine the chloride concentration profile in concrete from the exposed surface inwards.
The alkali-silica reaction (ASR) in concrete progressively transforms silica minerals into an alkali-silica gel with hygroscopic properties, which can expand significantly due to hydration and crack both aggregate and surrounding cement paste. Due to the extent and severity of ASR-related durability problems in concrete structures, continuous improvement of existing preventive solutions and development of novel approaches are required.
The traditional daylighting calculation methods and the metrics used for its quantification have some limitations. In view of that, an integrated method for characterization and realistic prediction of the dynamic performance of daylighting was developed.
Over the years, protection and control systems have been developed to solve problems caused by dynamic action. In this context, a study of the behaviour of TLD and the structures in which they are placed for vibration mitigation was developed at LNEC.