Non-fired aggregate, method for producing non-fired aggregate, fresh concrete, and hydraulic hardened body

A non-calcined aggregate production method using ground granulated blast furnace slag with controlled cement content and SO3 addition addresses CO2 emissions and enhances crushing strength, benefiting fresh concrete and hydraulic hardened materials.

JP2026023279APending Publication Date: 2026-02-13KAJIMA CORP +1
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
JP2024125187
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

Existing aggregate production methods emit high levels of CO2 and do not adequately address the need for increased strength in hydraulic hardened materials like concrete and mortar.

Method used

Production of a non-calcined aggregate using ground granulated blast furnace slag with controlled cement content and SO3 addition, followed by extrusion granulation and hardening, to reduce CO2 emissions and enhance crushing strength.

Benefits of technology

The method reduces CO2 emissions and increases the crushing strength of the aggregate, resulting in improved fresh concrete and hydraulic hardened bodies.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026023279000008
    Figure 2026023279000008
  • Figure 2026023279000009
    Figure 2026023279000009
  • Figure 2026023279000010
    Figure 2026023279000010
Patent Text Reader

Abstract

To provide non-fired aggregates capable of suppressing the discharge amount of CO2 and increasing crushing strength, a method for producing the non-fired aggregates, and fresh concrete and a hydraulic hardened body containing the non-fired aggregates.SOLUTION: The non-fired aggregates contain blast furnace slag fine powder containing SO3, and the content ratio of cement to the blast furnace slag fine powder (cement weight / blast furnace slag fine powder weight) is less than 10. The method for producing the non-fired aggregates includes an extrusion granulation step of extrusion-molding a kneaded material containing blast-furnace slag fine powder containing SO3 and water and having a content ratio of cement to the blast-furnace slag fine powder (cement weight / blast-furnace slag fine powder weight) of less than 10 to obtain a non-fired granulated molded body, and a hardening step of curing and hardening the granulated molded body to obtain the non-fired aggregates.SELECTED DRAWING: None
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Artificial aggregate and its production

    JP1997012349A