Microstructural alteration of alkali activated slag mortars depend on exposed high temperature level

Türker, Hakan Tacettin; Balçikanli, Müzeyyen; Durmuş, Ibrahim Halil; Özbay, Erdoʇan; ERDEMİR, Mustafa

doi:10.1016/j.conbuildmat.2015.12.070

Microstructural alteration of alkali activated slag mortars depend on exposed high temperature level

Yazarlar (5)

Hakan Tacettin Türker
Iskenderun Technical University, Türkiye

Müzeyyen Balçikanli
Iskenderun Technical University, Türkiye

Ibrahim Halil Durmuş
Adana Cement Factory, Türkiye

Erdoʇan Özbay
Iskenderun Technical University, Türkiye

Dr. Öğr. Üyesi Mustafa ERDEMİR Kastamonu Üniversitesi, Türkiye

Makale Türü	Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı	Construction and Building Materials
Dergi ISSN	0950-0618 Wos Dergi Scopus Dergi
Makale Dili	İngilizce	Basım Tarihi	02-2016
Cilt / Sayı / Sayfa	104 / 1 / 169–180	DOI	10.1016/j.conbuildmat.2015.12.070
UAK Araştırma Alanları	Fen Bilgisi Eğitimi

Özet

This article reports a study on the microstructural and mechanical properties of the Alkali Activated Slag mortars (AAS) upon exposing to the elevated temperatures up to 800 °C. Slag cement is activated by sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solutions with silicate modulus (Ms = SiO2/Na2O) of 1.0 and sodium (Na) dosages of 5%. AAS mortars were being subjected to the ambient and high temperature curing (6 h under 60 °C) after undisturbed for 24 h in mold at room temperature. Ordinary Portland cement (OPC) mortar was also prepared as control. Bending and compression tests were conducted at ambient temperature and after exposure to high temperatures at 28 days. Both AAS and OPC mortars were subjected to the X-ray diffraction (XRD), scanning electron microscope (SEM), and thermogravimetric analysis (TGA) tests to find out the microstructural variation due to the exposed temperature level. Test results revealed that the high temperature resistance of the alkali activated slag mortars and Portland cement mortars are clearly different from each other's. Contrary to the expectations, brilliant mechanical and high temperature resistance might not be observed at the alkali activated slag mortars irrespective of the applied cured conditions. Additionally, applied curing regime and exposed temperature level had a significant effect on the TGA, XRD and SEM images.

Anahtar Kelimeler

Alkali activated slag | High temperature | Microstructure | Mortar

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
Scopus	170

Microstructural alteration of alkali activated slag mortars depend on exposed high temperature level

Dergi Adı	Construction and Building Materials
Yayıncı	Elsevier Ltd
Açık Erişim	Hayır
ISSN	0950-0618
E-ISSN	1879-0526
CiteScore	13,9
SJR	2,094
SNIP	2,084

Microstructural alteration of alkali activated slag mortars depend on exposed high temperature level

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