Effect of cement and lime on strength and high-temperature resistance of class F and C fly ash-based geopolymer mortars

Işılay ÖZKUL; Adil GÜLTEKİN; Kambiz RAMYAR

doi:https://doi.org/10.47481/jscmt.1120446

Makale detayları

Effect of cement and lime on strength and high-temperature resistance of class F and C fly ash-based geopolymer mortars

Yazarlar:

Işılay ÖZKUL | Adil GÜLTEKİN | Kambiz RAMYAR

Yayıncı:

Yildiz Technical University

Ana Başlıklar:

İnşaat mühendisliği

Dergi:

Journal of Sustainable Construction Materials and Technologies 2022 Vol.7 Issue 2, pp.62-69

Belge Tipi:

Makale

Yayın Tarihi:

6/2022

Belge Dili:

İngilizce

Document ID (Org No.):

2000501226

Sıklık:

Üç Aylık

eISSN:

2458-973X

DOI:

https://doi.org/10.47481/jscmt.1120446

Özet:

 

Geopolymers have advantages such as good high-temperature, acid and sulfate resistance. Recently, researchers have been working on cement-geopolymer hybrid materials. According to these studies, it is possible to adjust the setting times, to gain strength at ambient temperature and to increase the strength with the use of cement. However, it is known that the structural stability of cement deteriorates at high temperatures, lowering its strength. In this study, the effect of slaked lime and cement inclusion on the strength and high-temperature resistance of Class F and Class C fly ash-based geopolymer mortars was investigated. For this purpose, fly ash was replaced with 10, 20 and 30% cement or 5, 10, 15 and 20% slaked lime. The lime and cement substitutions decreased the compressive strength by 8.9-24.4% in Class F fly ash-based geopolymer mortars. In Class C fly ash, however, the cement addition increased the compressive strength up to 46.6%, but the lime inclusion decreased the strength slightly. There was no significant change in the high-temperature resistance of cement or lime-included Class F fly ash geopolymer mortars exposed to 900°C. However, serious decrease was recorded in the high-temperature resistance of Class C fly ash geopolymers upon partial replacement of the fly ash with either cement or lime.

Makale detayları

Effect of cement and lime on strength and high-temperature resistance of class F and C fly ash-based geopolymer mortars

Yazarlar: Işılay ÖZKUL | Adil GÜLTEKİN | Kambiz RAMYAR

Yayıncı: Yildiz Technical University

Ana Başlıklar: İnşaat mühendisliği

Dergi: Journal of Sustainable Construction Materials and Technologies 2022 Vol.7 Issue 2, pp.62-69

Belge Tipi: Makale

Yayın Tarihi: 6/2022

Belge Dili: İngilizce

Document ID (Org No.): 2000501226

Sıklık: Üç Aylık

eISSN: 2458-973X

DOI: https://doi.org/10.47481/jscmt.1120446

Sayı

Yazarlar:

Işılay ÖZKUL | Adil GÜLTEKİN | Kambiz RAMYAR

Yayıncı:

Yildiz Technical University

Ana Başlıklar:

İnşaat mühendisliği

Dergi:

Journal of Sustainable Construction Materials and Technologies 2022 Vol.7 Issue 2, pp.62-69

Belge Tipi:

Makale

Yayın Tarihi:

6/2022

Belge Dili:

İngilizce

Document ID (Org No.):

2000501226

Sıklık:

Üç Aylık

eISSN:

2458-973X

DOI:

https://doi.org/10.47481/jscmt.1120446