Acelerador de fraguado y de endurecimiento de aglomerantes hidráulicos y composición de cemento que contiene dicho acelerador

摘要

Hydraulic binder setting and curing accelerator comprising the following content by weight: ° 25 to 35 % of at least one sulfoaluminate clinker, - 45 to 55 % of at least one sulphate source with a solubility higher than 4 g. L-1 in water at 20 °C, and ° 10 to 20 % of at least one sulphate source with a solubility of less than 4 g.L-1 in water at 20 °C, said clinker containing calcium aluminate-type mineralogical compounds. The cement composition containing said setting and curing accelerator can be used at temperatures of 5°C to 35°C, and to obtain a sprayed concrete or a grouting or bedding mortar with enhanced mechanical compression strength.