Early-strength low-calcium Portland cement and preparation method thereof: Fid-Bau Portal

Early-strength low-calcium Portland cement and preparation method thereof

NONG TINGGAO

The invention discloses early-strength low-calcium Portland cement and a preparation method thereof, and relates to the field of Portland cement, the early-strength low-calcium Portland cement comprises Portland cement clinker, the Portland cement clinker is composed of 95wt% of mineral raw materials and 5wt% of gypsum, the mineral raw materials comprise 35-50% of C3S, 15-25% of C2S, 10-25% of C3A and 15-25% of C4AF, the raw materials further comprise adulterated limestone, and the adulterated limestone is used as a raw material of the early-strength low-calcium Portland cement. The mixing amount of the limestone is 5-14% of the total mass of the Portland cement clinker. Compared with the prior art, the early-strength low-calcium Portland cement has the advantages that by proportioning proper amounts of C3S, C2S, C3A and C4AF, the early-strength low-calcium Portland cement disclosed by the invention can realize high early-stage and later-stage mechanical strength, and meanwhile, due to the fact that the clinker has low requirement on the content of limestone in the production process, the temperature during calcination can be effectively reduced, and the problem of energy consumption during calcination is effectively reduced.

本发明公开了一种早强低钙型硅酸盐水泥及其制备方法，涉及硅酸盐水泥领域，包括硅酸盐水泥熟料，硅酸盐水泥熟料由95wt％的矿物原料和5wt％的石膏组成，矿物原料中包括有：C3S35～50％、C2S15～25％、C3A10～25％、C4AF15～25％，且原料中还包括有外掺的石灰石，石灰石的掺量为硅酸盐水泥熟料总质量的5～14％。本发明与现有技术相比，通过配比适量的C3S、C2S、C3A、C4AF，使得本发明的早强低钙型硅酸盐水泥可以实现早期、后期力学强度骏高，同时由于熟料在生产过程中对石灰石的含量要求低，可以有效降低在煅烧时的温度，有效减低了煅烧时的耗能问题。

Zugriff

Download

Seitennavigation

Dokumentinformationen

Ähnliche Titel

Exportieren, teilen und zitieren