Synergistic Effects of Silica and Calcium‐Based Dual Admixtures on the Flowability, Microstructure, and Strength Development in Low‐Carbon Concrete
低炭素コンクリートにおけるシリカ系・カルシウム系複合混和材のフロー性、微細構造、強度発現への相乗効果 (AI 翻訳)
Md. Soybur Rahman, Zakaria Hossain
🤖 gxceed AI 要約
日本語
セメント生産のCO2排出削減を目的に、籾殻灰（RHA）と貝殻粉（SSP）をセメント代替として併用した低炭素コンクリートの特性を評価。25%置換で強度が向上し、炭素排出削減と廃棄物有効活用の可能性を示した。
English
This study evaluates low-carbon concrete using rice husk ash and seashell powder as cement replacements. At 25% replacement, compressive strength improved while carbon emissions reduced, offering a sustainable waste management approach for construction.
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
日本の建設業界では、カーボンニュートラル達成に向け、セメント代替材料の開発が重要。本研究成果は、国内の低炭素コンクリート技術の向上に寄与し、建設分野のGX推進に資する。
In the global GX context
Globally, reducing cement's carbon footprint is critical for climate targets. This study contributes to sustainable construction materials, aligning with international efforts to decarbonize the building sector.
👥 読者別の含意
🔬研究者:低炭素コンクリートの材料設計と炭素排出削減効果の知見を提供。
🏢実務担当者:建設会社や材料メーカーは、廃棄物由来の混和材を活用した低炭素コンクリートの実用化を検討できる。
📄 Abstract（原文）
ABSTRACT Eco‐friendly construction practices have emerged as a cornerstone of modern development. Due to the substantial carbon emissions from cement production, there is a growing demand for supplementary cementitious materials. This study investigated the synergistic effects of two different wastes, silica‐rich rice husk ash (RHA) and calcium‐rich seashell powder (SSP), on the flowability, microstructure, strength development, and reduction in carbon emissions. RHA (0%–12.5%) and SSP (0%–12.5%) were incorporated in equal proportions, replacing cement at levels ranging from 0% to 25%. The fresh and hardened properties of the concrete were evaluated through slump, compressive strength, and split tensile strength tests. Microstructural characteristics were analyzed using scanning electron microscopy (SEM) and energy‐dispersive X‐ray spectroscopy (EDS). In addition, the environmental performance was assessed based on global warming potential (GWP) and eco‐strength efficiency (ESE). The results revealed that incorporating RHA and SSP reduced both the workability and the unit weight of the hardened concrete. Replacing 5%–10% of the cement with these ash powders initially had a negative impact on mechanical performance. However, beyond 10% replacement, gradual improvements were observed. At 25% replacement, the modified concrete achieved superior compressive strength, along with enhanced split tensile strength, modulus of elasticity, and cement efficiency. Moreover, the blended concrete demonstrated notable environmental benefits by reducing carbon emissions. Overall, the combined use of RHA and SSP offers a promising approach for sustainable waste management and eco‐efficient construction practices.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/appl.70157first seen 2026-08-02 05:22:39 · last seen 2026-08-02 05:23:16
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