Liquid admixture accelerating the hardening of concrete, mortar and plaster, adhesives, where the binding material is cement. Improves the workability of the mix and reduces the use of water. Accelerates the hardening of mortars and concretes without loss of initial and final strength. Reduces the formation of thermal strains and cracks. Does not cause efflorescence and white salt stains. Chloride free and does not corrode steel reinforcements.