Curable hydraulic binder-based cement material intended to be used at low temperatures

摘要

Cement material, curable in the presence of water and including a hydraulic binder composition, which contains a mixture of hydraulic binders and a mixture of sulphate sources, wherein the hydraulic binder mixture includes: at least one hydraulic binder containing an alite-type mineralogical phase and at least one hydraulic binder containing an aluminate-type mineralogical phase, mainly consisting of ye'elimite (C4A3$) or a mixture of ye'elimite and calcium monoaluminate (CA), the mixture of sulphate sources containing at least one sulphate source with a solubility of <4 g·L−1, and at least one sulphate source with a solubility >4 g·L−1, the cement material optionally including mineral additions, fine granulates, large granulates and additives. The curable cement material is useful as a material capable of setting in cold weather, in particular a concrete, a mortar, a grout, a coating or a cement paste to be used at a temperature of −10° C. to +5° C.

主权项

1. A cement material that is curable in the presence of water, comprising a composition of hydraulic binders containing a mixture of hydraulic binders and a mixture of sources of sulfates,
wherein the mixture of hydraulic binders comprises at least one hydraulic binder containing an alite mineralogical phase, and at least one hydraulic binder containing an aluminum mineralogical phase, consisting predominantly of ye'elimite (C4A3$) or a mixture of ye'elimite and of calcium monoaluminate (CA) said mixture of sources of sulfates comprising at least one source of sulfates having a solubility of less than 4 g·L−1, and at least one source of sulfates having a solubility of greater than 4 g·L−1, said cement material comprising, in addition to said composition of hydraulic binders, optionally mineral additions, optionally fine granulates, optionally coarse granulates, and optionally adjuvants.