High-performance engineered geopolymer composites: A sustainable approach using recycled brick waste

被引:0
作者
Ahmed, Junaid K. [1 ]
Abdulrahman, Payam Ismael [2 ,3 ]
Atmaca, Nihat [4 ]
Khoshnaw, Ganjeena J. [5 ]
机构
[1] Univ Kirkuk, Dept Civil Engn, Kirkuk, Iraq
[2] Soran Univ, Sci Res Ctr, Soran, Kurdistan Regio, Iraq
[3] Shahid Fdn, Pirmam Tech & Vocat Inst, Construct Dept, Erbil, Kurdistan Regio, Iraq
[4] Gaziantep Univ, Dept Civil Engn, Gaziantep, Turkiye
[5] Erbil Polytech Univ, Dept Rd Construct, Erbil, Iraq
关键词
abrasion resistance; engineered geopolymer composites; fly ash; SEM; waste brick; water absorption; FLY-ASH; MICROSTRUCTURE; POWDER; CEMENT; CONSTRUCTION;
D O I
10.1002/app.56478
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
This study examines the viability of using construction waste, specifically recycled brick waste powder (RBWP), as an alternative conventional industrial byproduct (fly ash) in the manufacturing of engineered geopolymer composites (EGC). The EGC mixtures are made with 40 mu m diameter and 12 mm length polyvinyl alcohol (PVA) fiber. RBWP replaces class-F fly ash in EGC by 0, 20%, 40%, 60%, 80%, and 100%. This study produces six distinct EGC mixtures in total. The flexural strength, abrasion resistance, sorptivity, and water absorption of the EGC are investigated. Microstructural characterization is carried out using scanning electron microscopy (SEM). Based on the results, when fly ash is replaced by 40% and 100%, respectively, adding RBWP to the EGC mixes significantly improves flexural strength by 39% and midspan deflection by 169%. Nevertheless, abrasion resistance significantly improves when fly ash is completely replaced with RBWP, even though sorptivity and water absorption increase by about 128% and 240%, respectively. The volume change is reduced by 25.4% when RBWP is used. Furthermore, the SEM study shows that the RBWP undergoes active geopolymerization in the EGC mixes.
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页数:13
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