PORTLAND CEMENT WITH MINERAL ADDITIVES Russian patent published in 2022 - IPC C04B7/02 C04B7/153 C04B14/28 C04B103/32 C04B111/20 

FIELD: chemistry; construction.

SUBSTANCE: invention relates to compositions of cements and can be used to produce concrete mixtures and mortars used at enterprises for production of prefabricated reinforced concrete and concrete mixing units. Essence of the invention consists in the fact that Portland cement with mineral additives includes Portland cement clinker, TPS slag, chamotte-kaolin powder, limestone, gypsum dihydrate and a chemical additive in the form of superplasticizer C3, in the following ratio of components, wt.%: Portland cement clinker (PCC) — 63–75; gypsum dihydrate (DG) — 4.4–5.3 (in terms of SO₃); TPS slag — 5–10; chamotte-kaolin powder (CKP) — 2.5–7.5; limestone (L) — 13–14; chemical additive — superplasticizer C-3 — 0.1–0.2.

EFFECT: increased ultimate compressive strength in early hardening period due to introduction of two types of mineral additives (chamotte-kaolin powder and limestone) into the composition of Portland cement and reduced water demand of Portland cement due to introduction of chemical additive (superplasticizer C-3).

1 cl, 2 dwg, 5 tbl