Arnaud Plassais , Marie-Pierre Pomiès , Nicolas Lequeux , Philippe Boch , Jean-Pierre Korb , Dominique Petit
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Micropore size analysis in hydrated cement paste by NMR
We present a time evolution of 1H spin-lattice relaxation rates in the laboratory (1/T1) and in the rotating (1/T1ρ) frame of a synthetic cement paste. The typical results found for both rates allow us to follow the main hydration stages of the cement paste and the refinement of its microporosity. In particular the texturation of the porosity and the structuration of the surface of the material are evidenced on two model cement pastes. An interpretation in terms of fractal size distribution is considered as well as the effect of the curing temperature.
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