Property transformation of a modified sulfoaluminate grouting material under pressure circulation for a water-sealed underground oil cavern

摘要

Water-sealed underground oil caverns are quite different from conventional underground projects because of the harsher conditions. For one of the largest such caverns in China, conventional grouting materials could not meet the project standard. Therefore, the authors invented a new grouting material based on sulfoaluminate cement (SAC) and studied its properties under pressure circulation. During circulation, the time to the hydration exothermic peak time was reduced, and the peak temperature increased with the pressure. The compressive strength decreased during circulation and with the circulation time. These results were important for grouting during the project. (C) 2017 Elsevier Ltd. All rights reserved.