| abstract |
The invention concerns an adjuvant combination composed of a milling assistant and a concrete admixture for a composition comprising cement, for accelerating cement hydration, wherein the milling assistant comprises at least one amino alcohol and at least one cement hydration accelerator selected from chlorides, thiocyanates, nitrates, nitrites and hydroxides, and the concrete admixture comprises a reaction product of at least one calcium compound with at least one silicon compound selected from a silicon dioxide compound, a silica compound and a silicate compound. Using the adjuvant combination produces a significant acceleration in the hardening of a composition comprising cement, after the addition of water. This is an advantage especially in the production of prefabricated concrete components, allowing quicker deshuttering. |