COMPOSITIONS AND METHODS FOR IMPROVING THE TOUGHNESS OF SET CEMENTS

摘要

The toughness of set cement may be enhanced by incorporating partially cured waterborne resins in the cement matrix. A hardening agent is added to the waterborne resin, and the mixture is allowed to react for periods between about 1 min and 15 min. The waterborne resin with hardening agent is then combined with an inorganic cement to form a pumpable slurry. After curing, the set cement may withstand at least 1.5% strain before failure.