cement composition

A cement composition combining Portland cement, blast furnace slag, and calcium carbonate with specific ratios and additives maintains strength, addressing strength reduction issues in low-carbon cement, suitable for construction and ground improvement.

JP2026099162APending Publication Date: 2026-06-18FLOLIC CO LTD +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
FLOLIC CO LTD
Filing Date
2024-12-06
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing low-carbon cement compositions face a significant reduction in strength when replacing ordinary Portland cement with calcium carbonate, particularly affecting initial strength development.

Method used

A cement composition comprising ordinary Portland cement, blast furnace slag fine powder, and light calcium carbonate, with specific mass ratios and additives like inorganic sulfates and alkanolamines, promotes hydration processes that enhance strength while reducing carbon emissions.

Benefits of technology

The composition maintains strength comparable to ordinary Portland cement, addressing environmental concerns and supporting applications in construction and ground improvement.

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Abstract

The present invention aims to investigate low-carbon cement compositions that can suppress strength reduction. [Solution] The present invention provides a cement composition, a hardened body thereof, and an improved ground, comprising (A) ordinary Portland cement, (B) blast furnace slag fine powder, and (C) light calcium carbonate, wherein, per 100 parts by mass of the total mass of (A), (B), and (C), the content of component (A) is 15 to 35 parts by mass, the content of component (B) is 45 parts by mass or more, and the content of component (C) is 10 parts by weight or more.
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