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通过生物源介孔二氧化硅纳米颗粒提高白色普通硅酸盐水泥浆体的力学性能和耐火性。

Boosting the mechanical performance and fire resistivity of white ordinary portland cement pastes via biogenic mesoporous silica nanoparticles.

作者信息

Aziz Abdallah A, Nassar Hossam F, Al-Shemy Mona T, Mohamed O A

机构信息

Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, 62511, Egypt.

Cellulose and Paper Department, National Research Centre, 33El-Bohouth St. (Former El- Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.

出版信息

Sci Rep. 2025 Jan 23;15(1):2909. doi: 10.1038/s41598-025-86798-y.

DOI:10.1038/s41598-025-86798-y
PMID:39849017
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11757994/
Abstract

This study investigates how biogenic mesoporous silica nanoparticles (MS-NPs) extracted from rice straw residues, a sustainable and economical bio-source, affect White Ordinary Portland Cement (WOPC) paste performance. A comprehensive investigation using varied fractions of 0.25, 0.50, 0.75, and 1.0% MS-NPs as an additive to WOPC was conducted to analyze the physicomechanical characteristics of WOPC-MS hardened composites, including compressive strength, fire resistance, and water demand. The beneficial impact of biogenic MS-NPS was verified by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and differential thermo-gravimetric analysis (TGA/DTG) methods, revealing several hydration products such as calcium silicate hydrates (CSHs), calcium ferrosilicate hydrates (CFSHs), and calcium aluminosilicate hydrates (CASHs). These products enhance the overall physical and mechanical properties and the thermal stability of hardened WOPC-MS. The composite comprising WOPC-0.75 MS provides numerous advantages from both an economic and environmental perspective.

摘要

本研究探讨了从稻草残渣中提取的生物源介孔二氧化硅纳米颗粒（MS-NPs），这是一种可持续且经济的生物源，如何影响白色普通硅酸盐水泥（WOPC）浆体性能。使用0.25%、0.50%、0.75%和1.0%的不同比例MS-NPs作为WOPC的添加剂进行了全面研究，以分析WOPC-MS硬化复合材料的物理力学特性，包括抗压强度、耐火性和需水量。通过X射线衍射（XRD）、扫描电子显微镜（SEM）和差示热重分析（TGA/DTG）方法验证了生物源MS-NPS的有益影响，揭示了几种水化产物，如硅酸钙水合物（CSHs）、铁硅酸钙水合物（CFSHs）和铝硅酸钙水合物（CASHs）。这些产物增强了硬化WOPC-MS的整体物理和力学性能以及热稳定性。包含WOPC-0.75 MS的复合材料从经济和环境角度提供了许多优势。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2904/11757994/76a053d537a5/41598_2025_86798_Fig12_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2904/11757994/340a14d01390/41598_2025_86798_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2904/11757994/0690b0df51b2/41598_2025_86798_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2904/11757994/8dd978921441/41598_2025_86798_Fig10_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2904/11757994/76a053d537a5/41598_2025_86798_Fig12_HTML.jpg

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本文引用的文献

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Nanomaterial-Reinforced Portland-Cement-Based Materials: A Review.
纳米材料增强的波特兰水泥基材料：综述
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Cost-effective and green additives of pozzolanic material derived from the waste of alum sludge for successful replacement of portland cement.具有成本效益和环保效益的火山灰材料添加剂，来源于铝污泥废料，成功替代了波特兰水泥。
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