Enlightenment of ancient Tabia for sustainable construction material manufacture by accelerated CO2 treatment

IF 7.2 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization Pub Date : 2024-09-28 DOI:10.1016/j.jcou.2024.102937

Yao Du , Yuxuan Qi , Qiang Zeng , Liangtong Zhan , Jiyang Wang , Zhidong Zhang

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引用次数: 0

Abstract

Inspired by the wisdom of Tabia, an ancient building material with superior mechanical properties, this paper utilized accelerated CO₂ mineralization (CM) method to treat silty waste soil (SWS) with active lime after the pressing forming process for construction block manufacture. The influence of Ca(OH)₂ content and curing duration were explored. Results indicate that the generated CaCO₃ could fill pores and improve strength of the SWS blocks after CM treatment. At the optimal Ca(OH)₂ content of 15 % and curing duration of 24 h, the CM-SWS blocks possessed the compressive strength of 12.8 MPa, CO₂ emissions of 84.59 kgCO₂/m³ and cost of 196.26 CNY/m³, comparable with or superior than the commercial blocks. The findings would deepen the mechanistic understandings of CM treatment in material reinforcement, and pave a proof-of-concept path to sustainably upgrade the SWS of poor engineering performance for building material production.

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通过二氧化碳加速处理，启迪古老的塔比亚用于可持续建筑材料制造

塔比亚是一种具有优异机械性能的古老建筑材料，受塔比亚智慧的启发，本文利用二氧化碳加速矿化法（CO2 mineralization，CM），在建筑砌块制造的压制成型工艺后，用活性石灰处理淤泥质废土（SWS）。研究了 Ca（OH）2 含量和固化时间的影响。结果表明，CM 处理后生成的 CaCO3 可以填充孔隙，提高淤泥废土砌块的强度。在最佳 Ca（OH）2 含量为 15 %、固化时间为 24 小时的条件下，CM-SWS砌块的抗压强度为 12.8 MPa，二氧化碳排放量为 84.59 kgCO2/m3，成本为 196.26 元人民币/m3，与商品砌块相当或优于商品砌块。这些研究结果将加深对 CM 处理在材料加固中的机理理解，并为可持续地提升工程性能较差的 SWS 在建筑材料生产中的应用铺平了一条概念验证之路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of CO2 Utilization CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

13.90

自引率

10.40%

发文量

406

审稿时长

2.8 months

期刊介绍： The Journal of CO2 Utilization offers a single, multi-disciplinary, scholarly platform for the exchange of novel research in the field of CO2 re-use for scientists and engineers in chemicals, fuels and materials. The emphasis is on the dissemination of leading-edge research from basic science to the development of new processes, technologies and applications. The Journal of CO2 Utilization publishes original peer-reviewed research papers, reviews, and short communications, including experimental and theoretical work, and analytical models and simulations.