Abstract:The under-ground oil storage has been developing in China recently. Because of the specificity of under sea oil storage,the conditions of grouting material was more strict than other projects. The material must have good fluidity,high initial strength,and stable high strength in long term. Aims at the specific conditions of under sea storage grouting material,sulphoaluminate cement was selected as grouting basic material in this experiment,and different admixtures were selected to test the adaptation with cement. It was found that the fluidity was lower when mixed with sea water compared with fresh water;boric acid can adjust the initial and final set time with a good linearity;the strength of the cement was guaranteed by mixing F10 water reducer but the UNF–5 made it fluctuant. Therefore,the grouting material of under sea oil storage was mixed out which was satisfied with the constraint conditions.
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