Influence and mechanism of ultra-high molecular weight polyethylene on mechanical and electromagnetic shielding properties of alkali-activated composite mortar based on magnesium slag, blast-furnace slag and silica fume

被引：5

作者：

Liu, Haoran ^{[1
,2
]}

Yang, Qin ^{[1
,2
]}

Xiao, Huiteng ^{[1
]}

Zhang, Jiale ^{[1
]}

Zhang, Youpeng ^{[1
]}

Lu, Ping ^{[1
]}

Zhang, Na ^{[1
]}

机构：

[1] China Univ Geosci, Engn Res Ctr, Sch Mat Sci & Technol, Minist Educ Geol Carbon Storage & Low Carbon Utili, Beijing 100083, Peoples R China

[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2024年 / 12卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Magnesium slag; Ultra -high molecular weight polyethylene; Alkali -activated composite mortar; Mechanical properties; Electromagnetic shielding; FLY-ASH; CONCRETE; DURABILITY;

D O I：

10.1016/j.jece.2024.112437

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Addressing the environmental impact of the magnesium industry ' s waste, our study presents a sustainable solution by repurposing magnesium slag, blast -furnace slag, and silica fume to create an innovative alkali -activated mortar (MBS-AAM). This research further explores enhancing electromagnetic (EM) shielding capabilities by incorporating ultra -high molecular weight polyethylene (UHMWPE) powder into MBS-AAM. The addition of 0.5 wt% UHMWPE significantly improves the EM shielding effectiveness of the MBS-AAM composite. Specifically, the modified MBS-AAM demonstrates compressive and flexural strengths of 55.0 MPa and 8.5 MPa, respectively, along with a 148.68% increase in EM shielding effectiveness compared to conventional cement mortar. This advancement is attributed to the optimized pore structure, featuring a higher proportion of smaller pores and reduced overall porosity. Our findings highlight a dual benefit: effective waste utilization and enhanced material functionality for EM shielding, offering a promising approach to sustainable construction and waste management within the magnesium industry.

引用

页数：13

共 32 条

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