Performance of G-Oil Well cement exposed to elevated hydrothermal curing conditions |
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Authors: | Martin T Palou František Šoukal Martin Boháč Pavel Šiler Tomáš Ifka Vladimír Živica |
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Institution: | 1. DII, University of Trento, via Mesiano 77, 38123, Trento, Italy 2. DICAM, University of Trento, via Mesiano 77, 38123, Trento, Italy 3. Elettra Sincrotrone, S. S. 14 - km 163.5, 34149, Basovizza, Trieste, Italy
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Abstract: | G-Oil Well cement was modified by blending it with blast furnace slag and silica fume at various ratios. The hydration was carried out under the hydrothermal conditions (200 °C and 1.2 MPa) up to 7 days. TG and DTG were performed on cured pastes to identify the hydrated products, their quantity and their stability under given hydrothermal curing conditions. The microstructure of samples was observed by a scanning electron microscope. The mechanical compressive strength was determined and the pore structure was analyzed using mercury intrusion porosimeter. It was found out that the compressive strength values of blend G-Oil Well cements markedly increased with increasing blast furnace/silica ratio. The pore structure was consolidated, as demonstrated by the displacement of pore size distribution to the region of micro and nano pores. |
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