Effect of Structural Properties of Blast Furnace Slag, Calcined Kaolin and Diatomite Substituted Cements on Flexural Strength

Yılmaz Koçak; Ayperi Tanık

Makale detayları

Effect of Structural Properties of Blast Furnace Slag, Calcined Kaolin and Diatomite Substituted Cements on Flexural Strength

Yazarlar:

Yılmaz Koçak | Ayperi Tanık

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 1, pp.400-418

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001310348

pISSN:

2148-2446

Anahtar kelimeler:

Özet:

 The use of mineral additives such as blast furnace slag BFS, calcined kaolin and diatomite, which are preferred in cement and concrete technology, is increasing day by day. It is stated that positive changes occur in the strength and durability of concrete depending on the structural properties of these materials. In this context, besides the physical and chemical properties of mineral additives, it is thought that it may be useful to determine the properties such as mineralogical, molecular, thermal and microstructure. For this purpose, in the first stage, structural properties such as physical, chemical, mineralogical, molecular, thermal and microstructure of Portland cement PC, BFS, calcined kaolin and diatomite were determined. In the second stage, a total of 4 types of cement, one of which is a reference, were obtained by substituting BFS, calcined kaolin and diatomite at 10 by weight instead of PC. At the last stage, the flexural strength values of the mortar samples produced with these cements were determined at the 2-day, 7-day, 28-day and 90-day. As a result, it can be stated that the flexural strength values of the mortar samples differ depending on the hydration times and the structural properties of the mineral admixtures. Furthermore, it can be stated that the cement mortar with BFS additives has values close to the flexural strength of the reference cement at 90-day, and provides a relatively more positive contribution in terms of flexural strength compared to other pozzolanic materials.

 The use of mineral additives such as blast furnace slag BFS, calcined kaolin and diatomite, which are preferred in cement and concrete technology, is increasing day by day. It is stated that positive changes occur in the strength and durability of concrete depending on the structural properties of these materials. In this context, besides the physical and chemical properties of mineral additives, it is thought that it may be useful to determine the properties such as mineralogical, molecular, thermal and microstructure. For this purpose, in the first stage, structural properties such as physical, chemical, mineralogical, molecular, thermal and microstructure of Portland cement PC, BFS, calcined kaolin and diatomite were determined. In the second stage, a total of 4 types of cement, one of which is a reference, were obtained by substituting BFS, calcined kaolin and diatomite at 10 by weight instead of PC. At the last stage, the flexural strength values of the mortar samples produced with these cements were determined at the 2-day, 7-day, 28-day and 90-day. As a result, it can be stated that the flexural strength values of the mortar samples differ depending on the hydration times and the structural properties of the mineral admixtures. Furthermore, it can be stated that the cement mortar with BFS additives has values close to the flexural strength of the reference cement at 90-day, and provides a relatively more positive contribution in terms of flexural strength compared to other pozzolanic materials.

 The use of mineral additives such as blast furnace slag BFS, calcined kaolin and diatomite, which are preferred in cement and concrete technology, is increasing day by day. It is stated that positive changes occur in the strength and durability of concrete depending on the structural properties of these materials. In this context, besides the physical and chemical properties of mineral additives, it is thought that it may be useful to determine the properties such as mineralogical, molecular, thermal and microstructure. For this purpose, in the first stage, structural properties such as physical, chemical, mineralogical, molecular, thermal and microstructure of Portland cement PC, BFS, calcined kaolin and diatomite were determined. In the second stage, a total of 4 types of cement, one of which is a reference, were obtained by substituting BFS, calcined kaolin and diatomite at 10 by weight instead of PC. At the last stage, the flexural strength values of the mortar samples produced with these cements were determined at the 2-day, 7-day, 28-day and 90-day. As a result, it can be stated that the flexural strength values of the mortar samples differ depending on the hydration times and the structural properties of the mineral admixtures. Furthermore, it can be stated that the cement mortar with BFS additives has values close to the flexural strength of the reference cement at 90-day, and provides a relatively more positive contribution in terms of flexural strength compared to other pozzolanic materials.

 Çimento ve beton teknolojisinde tercih edilen yüksek fırın cürufu YFC, kalsine kaolin ve diatomit gibi mineral katkıların kullanımı her geçen gün artmaktadır. Bu malzemelerin yapısal özelliklerine bağlı olarak, betonun dayanım ve dayanıklılığında olumlu değişikliklerin meydana geldiği belirtilmektedir. Bu bağlamda mineral katkıların fiziksel ve kimyasal özelliklerinin yanı sıra, mineralojik, moleküler, termal ve mikro yapı gibi özelliklerinin belirlenmesinin de faydalı olabileceği düşünülmektedir. Bu amaçla ilk aşamada Portland çimento PÇ, YFC, kalsine kaolin ve diatomitin fiziksel, kimyasal, mineralojik, moleküler, termal ve mikro yapı gibi yapısal özellikleri belirlenmiştir. İkinci aşamada YFC, kalsine kaolin ve diatomit, PÇ yerine ağırlıkça 10 oranlarında ikame edilerek, biri referans olmak üzere toplam 4 tip çimento elde edilmiştir. Son aşamada ise bu çimentolarla üretilen harç numunelerinin 2, 7, 28 ve 90. günlerde eğilme dayanım değerleri belirlenmiştir. Sonuç olarak harç numunelerinin eğilme dayanım değerlerinin, hidratasyon sürelerine ve mineral katkıların yapısal özelliklerine bağlı olarak farklılık gösterdiği belirtilebilir. Ayrıca YFC ikameli çimento harcının 90. günde neredeyse referans çimentonun eğilme dayanım değerine sahip olduğu ve diğer puzolanik malzemelere göre eğilme dayanımı açısından nispeten daha olumlu katkı sağladığı ifade edilebilir.

Makale detayları

Effect of Structural Properties of Blast Furnace Slag, Calcined Kaolin and Diatomite Substituted Cements on Flexural Strength

Yazarlar:

Yılmaz Koçak | Ayperi Tanık

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 1, pp.400-418

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001310348

pISSN:

2148-2446

Portland cemen

blast furnace slag

calcined kaolin

diatomite

structural features

flexural strengthPortland çimento

yüksek fırın cürufu

kalsine kaolin

diatomit

yapısal özellikler

eğilme dayanımı

Sayı

Makale detayları

Yazarlar: Yılmaz Koçak | Ayperi Tanık

Yayıncı: Duzce University

Ana Başlıklar: Mühendislik

Dergi: Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 1, pp.400-418

Belge Tipi: Makale

Yayın Tarihi: 1/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001310348

pISSN: 2148-2446

Sayı

Yazarlar:

Yılmaz Koçak | Ayperi Tanık

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 1, pp.400-418

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001310348

pISSN:

2148-2446