Structural Engineering and Mechanics

  • 제89권4호
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  • Pages.335-347
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  • 2024
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Investigating the long-term behavior of creep and drying shrinkage of ambient-cured geopolymer concrete

  • Asad Ullah Qazi (Civil Engineering Department, University of Engineering and Technology Lahore) ;
  • Ali Murtaza Rasool (Diamer Bahsa Dam Consultant Group (DBCG)-National Engineering Services Pakistan (NESPAK)) ;
  • Iftikhar Ahmad (Civil Engineering Department, University of Engineering and Technology Lahore) ;
  • Muhammad Ali (Diamer Bahsa Dam Consultant Group (DBCG)-National Engineering Services Pakistan (NESPAK)) ;
  • Fawad S. Niazi (Department of Civil and Mechanical Engineering, Purdue University Fort Wayne)
  • 투고 : 2023.07.21
  • 심사 : 2024.02.02
  • 발행 : 2024.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study pioneers the exploration of creep and shrinkage behavior in ambient-cured geopolymer concrete (GPC), a vital yet under-researched area in concrete technology. Focusing on the influence of sodium hydroxide (NaOH) solution concentration, the research utilizes low calcium fly ash (Class-F) and alkaline solutions to prepare two sets of GPC. The results show distinct patterns in compressive strength development and dry shrinkage reduction, with a 14 M NaOH solution demonstrating a 26.5% lower dry shrinkage than the 16 M solution. The creep behavior indicated a high initial strain within the first 7 days, significantly influenced by curing conditions and NaOH concentration. This study contributes to the existing knowledge by providing a deeper understanding of the time-dependent properties of GPC, which is crucial for optimizing its performance in structural applications.

키워드

과제정보

The authors gratefully acknowledge the Department of Civil Engineering, University of Engineering and Technology, Lahore, Pakistan, for providing research, financial, and experimental facilities. Experts from National Engineering Services Pakistan (NESPAK) and Purdue University Fort Wayne are gratefully acknowledged for providing technical assistance.

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