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Journals / Eskişehir Osmangazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2009 / Cilt: 22 - Sayı: 2

Production of alkalı activated lightweight bottom ash mortar

Alkalilerle aktive edilen taban küllü hafif harç üretimi

Mehmet Uğur TOPRAK
İlker Bekir TOPÇU
Pages
153–164
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The compressive strength loss of the specimen was only 11,5% after 80 freeze-thaw cycles, and the specimen possessed superior thermal stability up to 400 °C.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study it is attempted to use alkali activated thermal power plant bottom ash (BA) in the production of lightweight mortar.
📊
Key Findings & Data:Cement-free 4x4x16 cm mortar specimens were produced using grinded BA, alkali mixtures of sodium hydroxide (SH) and sodium silicate (SS).
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Conclusion & Impact:The compressive strength loss of the specimen was only 11,5% after 80 freeze-thaw cycles, and the specimen possessed superior thermal stability up to 400 °C.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study it is attempted to use alkali activated thermal power plant bottom ash (BA) in the production of lightweight mortar. Cement-free 4x4x16 cm mortar specimens were produced using grinded BA, alkali mixtures of sodium hydroxide (SH) and sodium silicate (SS). Two different curing types of 20 h curing at 75 ºC oven and then air curing at 20 $^0C$ air or air curing at 20 $^0C$ were carried on the specimens. Unit weight, ultrasound pulse velocity and compressive strengths of the specimens were determined on 1, 7 and 28. days. Average values of the unit weight and compressive strength for the best specimen were 1,59 kg/$dm^3$ and 18,51 MPa respectively. The compressive strength loss of the specimen was only 11,5% after 80 freeze-thaw cycles, and the specimen possessed superior thermal stability up to 400 °C.

Özet

Çalısmada Termik Santral taban külünün (TK) alkalilerle aktive edilerek hafif harç üretiminde kullanılması amaçlanmıstır. Bu amaçla öğütülmüs TK sodyum hidroksit (SH) ve sodyum silikat (SS) alkali çözeltileri kullanılarak 4x4x16 cm boyutlarında çimentosuz harç karısımları üretilmistir. Numunelere 20 saat 75 $^0C$’de etüvde veya laboratuvarda 20 $^0C$’de havada kür olmak üzere iki farklı kür uygulanmıstır. 1, 7 ve 28. günlerde numunelerin birim ağırlık, ultrases geçis hızı ve basınç dayanımları belirlenmistir. En uygun numunenin birim ağırlığı 1,59 kg/$dm^3$ ve basınç dayanımı 18,51 MPa, 80 donma-çözülme çevrimi sonucu dayanım kaybı % 11,5 olarak bulunmus ve numune 400 °C’ye kadar termal stabilitesini korumustur.

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Cite This Article

TOPRAK, M. U., TOPÇU, İ. B. (2022). Production of alkalı activated lightweight bottom ash mortar. Eskişehir Osmangazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 22 - Sayı: 2, 153–164. https://ajindex.com/articles/505819

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