กำลังอัดและการดูดซึมน้ำจีโอพอลิเมอร์เถ้าลอยผสมเถ้าไม้ยางพารา

Muhamadrisuwan  Wadeng; Eruwan  Romoh; Jeerayut  Nukrohwat

Authors

Muhamadrisuwan Wadeng Building Construction, Naradhiwas Technical College, Princess of Naradhiwas University, Mueang Narathiwat District, Narathiwat 96000
Eruwan Romoh Building Construction, Naradhiwas Technical College, Princess of Naradhiwas University, Mueang Narathiwat District, Narathiwat 96000
Jeerayut Nukrohwat Building Construction, Naradhiwas Technical College, Princess of Naradhiwas University, Mueang Narathiwat District, Narathiwat 96000

Keywords:

Fly ash, Para wood ash, Binder, Alkaline activator, Geopolymer

Abstract

This study aimed to evaluate the effects of the alkaline solution–to–binder ratio and partial replacement of fly ash with Para wood ash on the properties of geopolymer mortar. The mix variables included alkaline-to-binder ratios of 0.4, 0.6, and 0.8; a sodium silicate–to–sodium hydroxide ratio of 2.5; Para wood ash contents of 0%, 20%, 40%, and 60%; water-to-binder ratios of 0.2 and 0.3; and sand-to-binder ratios of 2.75, 3.00, and 3.25 by mass across all mixtures. Specimens were ambient-cured at 30 ± 2 °C for 24 h, with compressive strength tested at 1, 7, and 28 days and water absorption measured at 28 days. The 40P0.6A mixture exhibited the highest compressive strength of 35.93 MPa and a 24‑h water absorption of 0.88%. Increasing the Para wood ash and sand contents increased water absorption, whereas increasing the alkaline-to-binder ratio reduced it. Environmentally, this research is beneficial for lowering cement consumption and upcycling biomass waste to produce durable, high‑strength construction materials.

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อาบีเด็ง ฮาวา “สมบัติของคอนกรีตมวลรวมเบาหินพัมมิซผสมเถ้าลอยไม้ยางพาราและเถ้าแกลบ,” วิทยานิพนธ์ วิศวกรรมมหาบัณฑิต, สาขาวิศวกรรมโยธา, คณะวิศวกรรมศาสตร์, มหาวิทยาลัยนราธิวาสราชนครินทร์, 2551.