Ranking responsible source assessments for building materials

An increasing amount of building materials is traded worldwide. The raw materials needed to construct buildings are often extracted in different places than where they are used. This creates social, economic and environmental impacts that are inflicted in other locations than where the building is constructed. To gain insight in these impacts and to be able to reduce them, certification schemes are developed. This research concentrates on the social impact of global construction material extraction and production, and can be used in multi-aspect sustainable building assessment tools. In this paper, we propose a framework for the ranking of certificates to assess the social impact of global construction material extraction and production. With this framework, new assessment schemes can objectively be added to a tool. This framework is already being integrated in BREEAM-NL, but can also be used for other countries and other assessment methods than BREEAM

Investigation of artificial pit growth in carbon steel in highly alkaline solutions containing 0.5 M NaCl under oxic and anoxic conditions

We report an investigation of artificial pit growth (APG) in P355QL2 Grade Carbon Steel in the highly alkaline, synthetic concrete pore solution [sat. Ca(OH)2/NaOH of pH of 13.5] + 0.5 M NaCl under both “oxic” and “anoxic” environmental conditions. The corrosion potential of the external surface, as well as the coupling currents flowing between the external surface and the pit tip and pit walls of the segmented carbon steel specimens under the selected conditions, were measured as a function of time and pit aspect ratio. The findings were interpreted in terms of the Differential Aeration Hypothesis (DAH)

Investigation of artificial pit growth in carbon steel in highly alkaline solutions containing 0.5 M NaCl under oxic and anoxic conditions

We report an investigation of artificial pit growth (APG) in P355QL2 Grade Carbon Steel in the highly alkaline, synthetic concrete pore solution [sat. Ca(OH)2/NaOH of pH of 13.5] + 0.5 M NaCl under both “oxic” and “anoxic” environmental conditions. The corrosion potential of the external surface, as well as the coupling currents flowing between the external surface and the pit tip and pit walls of the segmented carbon steel specimens under the selected conditions, were measured as a function of time and pit aspect ratio. The findings were interpreted in terms of the Differential Aeration Hypothesis (DAH)