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Reaction Sequence Coordination in Ternary Solid-Waste Systems for Low-Carbon Cementitious Materials

三元固廃棄物系における反応シーケンス協調による低炭素セメント材料 (AI 翻訳)

Youlin Ye, Guangyu Zhou, Y S Zhang, Xin Wei, Ben Niu

Applied Sciences📚 査読済 / ジャーナル2026-04-24#その他Origin: CN
DOI: 10.3390/app16094205
原典: https://doi.org/10.3390/app16094205

🤖 gxceed AI 要約

日本語

本研究では、再生レンガ粉（RBP）、高炉スラグ（GGBS）、自燃炭ガング（SCCG）の三元固廃棄物を用いた低炭素コンクリートを開発。最適配合（RBP:GGBS:SCCG=4:3:1）でセメント代替率30%を達成し、28日圧縮強度38.26 MPa（普通モルタル比14.2%増）、吸水率11.12%、電気フラックス27.2%減。反応シーケンス調整により早期GGBS、後期RBP・SCCGの寄与が性能向上に寄与。

English

This study develops low-carbon concrete using ternary solid wastes: recycled brick powder (RBP), ground granulated blast-furnace slag (GGBS), and self-combusting coal gangue (SCCG). Optimal ratio RBP:GGBS:SCCG=4:3:1 achieves 30% cement replacement, 28-day compressive strength 38.26 MPa (14.2% higher than plain mortar), water absorption 11.12%, and 27.2% reduction in electrical flux. The performance is attributed to a time-dependent reaction sequence where GGBS contributes early and RBP/SCCG participate later via pozzolanic reactions.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本でも建設分野の脱炭素が急務であり、廃棄物由来のSCM活用は重要な施策。本論文の反応シーケンス設計手法は、高炉スラグやフライアッシュなど既存材料の最適配合に応用可能で、日本のコンクリート業界の低炭素化に示唆を与える。

In the global GX context

Cement production accounts for ~8% of global CO2 emissions, making low-carbon alternatives critical. This ternary waste system offers a practical design strategy (reaction sequence coordination) that can be adapted globally to improve SCM performance at high replacement rates, contributing to industrial decarbonization.

👥 読者別の含意

🔬研究者:Provides a novel reaction sequence coordination design methodology for ternary waste-based SCM systems, with detailed microstructural evidence.

🏢実務担当者:Offers an optimized mix design (RBP:GGBS:SCCG=4:3:1) achieving 30% cement replacement with improved strength and durability, directly applicable to precast concrete production.

🏛政策担当者:Supports policies promoting solid waste utilization in construction and low-carbon building material standards, demonstrating viability of ternary SCM systems.

📄 Abstract（原文）

Using solid waste as supplementary cementitious materials (SCMs) is an effective strategy for promoting low-carbon construction development. However, single or binary systems often exhibit mismatched reaction kinetics, thereby limiting their performance at high cement replacement rates. This study focuses on a novel low-carbon concrete designed based on reaction sequence coordination, containing recycled brick powder (RBP), ground granulated blast-furnace slag (GGBS), and self-combusting coal gangue (SCCG). The effects of RBP, GGBS, and SCCG on the hydration process and microstructure of the novel low-carbon concrete with different replacement levels have been studied by testing compressive strength, workability, and durability and observing microstructural changes. The results showed that an optimized ternary composition with an RBP:GGBS:SCCG ratio of 4:3:1 achieves a cement replacement level of 30% while exhibiting a 28-day compressive strength of 38.26 MPa, representing a 14.2% increase compared with plain cement mortar. Microstructural analyses indicate that this enhanced performance results from a time-dependent reaction sequence, in which GGBS contributes predominantly at early ages by supplying calcium, whereas RBP and SCCG mainly participate through delayed pozzolanic reactions and pore refinement at later ages. Consequently, the optimized ternary mortar exhibits a water absorption of 11.12% and a 27.2% reduction in electrical flux. This study aims to provide practical strategies for enhancing the performance of low-carbon cementitious materials through a reaction sequence coordination design approach, thereby improving the utilization efficiency of solid waste in the production of low-carbon building materials.

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