composition, cement, concrete or mortar, use of at least one polycarboxylic acid or one of its salts, process for preparing a concrete or mortar, and elements for the field of construction.

摘要

A composition includes at least, in % expressed by mass relative to the total mass of the composition, from 0.01 to 3% of polycarboxylic acid or salts thereof, the polycarboxylic acid including 2 to 4 carboxyl groups per molecule; and from 97 to 99.99% of a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF clinker).