陶瓷废料沙丘砂砂浆孔隙结构性能研究

IF 1.5 4区 工程技术 Q3 ENGINEERING, CIVIL Proceedings of the Institution of Civil Engineers-Engineering Sustainability Pub Date : 2023-12-06 DOI:10.1680/jensu.23.00024
Abderrahmane Ghrieb, Yacine Abadou, Rosa Bustamante, María Isabel Sánchez de Rojas
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引用次数: 0

摘要

利用建筑垃圾制造混凝土和砂浆是一个重要的过程,不仅提供经济效益,而且通过减少农村和城市地区的浪费来帮助保护环境。本实验旨在研究陶瓷碎渣(CCW)和砖碎渣(CBW)的加入对沙丘砂砂浆的容重、和易性、抗压和抗折强度、吸水率和微观结构性能的影响。为了确定孔隙度的变化,本研究采用压汞法测量孔隙度和孔径分布。利用扫描电子显微镜和能量色散x射线能谱分析对砂浆基质中的孔洞进行了微观结构和尺寸分析,并拍摄了孔洞的照片。用CCW和CBW替代15%的砂,提高了沙丘砂砂浆的密实度和机械强度,动态弹性模量分别提高了29%和26%左右。这是由于这些残留物的火山灰活性,这些残留物主要以中小毛细血管的形式出现在所有研究的砂浆中,减少了孔隙的直径。
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Investigation of the pore structure performance of dune sand mortar with ceramic waste
The use of construction waste in creating concrete and mortar is an important process that not only offers economic benefits but also helps protect the environment by reducing waste in rural and urban areas. This experimental study aims to investigate the effect of adding crushed ceramic waste (CCW) and crushed brick waste (CBW) on the bulk density, workability, compressive and flexural strengths, water absorption and microstructural properties of dune sand mortar. To determine changes in porosity, the study uses the mercury intrusion porosimetry technique to measure porosity and pore size distribution. Scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses are conducted to examine the microstructure and size of the voids using an electron microscope, and photographs of voids in the mortar matrix are taken. By replacing 15% of the sand with CCW and CBW, the compactness and mechanical strength of the dune sand mortar are enhanced, increasing the dynamic modulus of elasticity by around 29 and 26%, respectively. This is due to the pozzolanic activity of these residues, which mainly occur in the form of medium and small capillaries in all the mortars studied, reducing the diameter of the pores.
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来源期刊
CiteScore
3.70
自引率
16.70%
发文量
44
审稿时长
>12 weeks
期刊介绍: Engineering Sustainability provides a forum for sharing the latest thinking from research and practice, and increasingly is presenting the ''how to'' of engineering a resilient future. The journal features refereed papers and shorter articles relating to the pursuit and implementation of sustainability principles through engineering planning, design and application. The tensions between and integration of social, economic and environmental considerations within such schemes are of particular relevance. Methodologies for assessing sustainability, policy issues, education and corporate responsibility will also be included. The aims will be met primarily by providing papers and briefing notes (including case histories and best practice guidance) of use to decision-makers, practitioners, researchers and students.
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