Investigation of Usability of Sepiolite as a Pozzolan in Production of High Performance Cementitious Composites

Rasim Cem Saka; Serkan Subaşı

Makale detayları

Investigation of Usability of Sepiolite as a Pozzolan in Production of High Performance Cementitious Composites

Yazarlar:

Rasim Cem Saka | Serkan Subaşı

Yayıncı:

Sakarya University

Ana Başlıklar:

Civil Engineering

Dergi:

Sakarya University Journal of Science Vol.28 Issue 3, pp.480-495

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001318000

pISSN:

2147-835X

Anahtar kelimeler:

Özet:

 The continuous growth of population and urbanization in the world significantly increases the demand for cement. In terms of sustainability, the cement industry needs to develop new and effective pozzolans with the appropriate recycling of alternative raw materials. It is also important to evaluate sepiolite, which has very limited resources in the world compared to other industrial minerals and whose economic deposits are limited to Spain and Türkiye. In this study, the usability of sepiolite as a pozzolan in cement and its effects on physical, mechanical and durability properties were investigated. First of all, the chemical and physical properties of sepiolite in Eskisehir region were investigated. Crude and ground sepiolite calcined at 500 ºC, 700 ºC and 900ºC were substituted for CEM I 42.5 R class standard Portland cement at 5-10-15 and 20 ratios. The pozzolanic activities of produced sepiolite substituted cement were determined according to ASTM C-311. As a result, crude sepiolite retains more water than calcined sepiolite, thus negatively affecting the strength properties of the concrete. Additionally, sepiolite is considered suspicious harmful-harmless in terms of alkali silica reactivity except 10-15-20 crude sepiolite substitutions. Overall, It has been observed that sepiolite does not have sufficient pozzolanic properties in cementitious composites.

 The continuous growth of population and urbanization in the world significantly increases the demand for cement. In terms of sustainability, the cement industry needs to develop new and effective pozzolans with the appropriate recycling of alternative raw materials. It is also important to evaluate sepiolite, which has very limited resources in the world compared to other industrial minerals and whose economic deposits are limited to Spain and Türkiye. In this study, the usability of sepiolite as a pozzolan in cement and its effects on physical, mechanical and durability properties were investigated. First of all, the chemical and physical properties of sepiolite in Eskisehir region were investigated. Crude and ground sepiolite calcined at 500 ºC, 700 ºC and 900ºC were substituted for CEM I 42.5 R class standard Portland cement at 5-10-15 and 20 ratios. The pozzolanic activities of produced sepiolite substituted cement were determined according to ASTM C-311. As a result, crude sepiolite retains more water than calcined sepiolite, thus negatively affecting the strength properties of the concrete. Additionally, sepiolite is considered suspicious harmful-harmless in terms of alkali silica reactivity except 10-15-20 crude sepiolite substitutions. Overall, It has been observed that sepiolite does not have sufficient pozzolanic properties in cementitious composites.

 The continuous growth of population and urbanization in the world significantly increases the demand for cement. In terms of sustainability, the cement industry needs to develop new and effective pozzolans with the appropriate recycling of alternative raw materials. It is also important to evaluate sepiolite, which has very limited resources in the world compared to other industrial minerals and whose economic deposits are limited to Spain and Türkiye. In this study, the usability of sepiolite as a pozzolan in cement and its effects on physical, mechanical and durability properties were investigated. First of all, the chemical and physical properties of sepiolite in Eskisehir region were investigated. Crude and ground sepiolite calcined at 500 ºC, 700 ºC and 900ºC were substituted for CEM I 42.5 R class standard Portland cement at 5-10-15 and 20 ratios. The pozzolanic activities of produced sepiolite substituted cement were determined according to ASTM C-311. As a result, crude sepiolite retains more water than calcined sepiolite, thus negatively affecting the strength properties of the concrete. Additionally, sepiolite is considered suspicious harmful-harmless in terms of alkali silica reactivity except 10-15-20 crude sepiolite substitutions. Overall, It has been observed that sepiolite does not have sufficient pozzolanic properties in cementitious composites.

 The continuous growth of population and urbanization in the world significantly increases the demand for cement. In terms of sustainability, the cement industry needs to develop new and effective pozzolans with the appropriate recycling of alternative raw materials. It is also important to evaluate sepiolite, which has very limited resources in the world compared to other industrial minerals and whose economic deposits are limited to Spain and Türkiye. In this study, the usability of sepiolite as a pozzolan in cement and its effects on physical, mechanical and durability properties were investigated. First of all, the chemical and physical properties of sepiolite in Eskisehir region were investigated. Crude and ground sepiolite calcined at 500 ºC, 700 ºC and 900ºC were substituted for CEM I 42.5 R class standard Portland cement at 5-10-15 and 20 ratios. The pozzolanic activities of produced sepiolite substituted cement were determined according to ASTM C-311. As a result, crude sepiolite retains more water than calcined sepiolite, thus negatively affecting the strength properties of the concrete. Additionally, sepiolite is considered suspicious harmful-harmless in terms of alkali silica reactivity except 10-15-20 crude sepiolite substitutions. Overall, It has been observed that sepiolite does not have sufficient pozzolanic properties in cementitious composites.

Makale detayları

Investigation of Usability of Sepiolite as a Pozzolan in Production of High Performance Cementitious Composites

Yazarlar:

Rasim Cem Saka | Serkan Subaşı

Yayıncı:

Sakarya University

Ana Başlıklar:

Civil Engineering

Dergi:

Sakarya University Journal of Science Vol.28 Issue 3, pp.480-495

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001318000

pISSN:

2147-835X

Sepiolite

Pozzolanic activity

Calcination

StrengthSepiolite; Pozzolanic Activity; Calcination; Strengt

Sayı

Makale detayları

Investigation of Usability of Sepiolite as a Pozzolan in Production of High Performance Cementitious Composites

Yazarlar: Rasim Cem Saka | Serkan Subaşı

Yayıncı: Sakarya University

Ana Başlıklar: Civil Engineering

Dergi: Sakarya University Journal of Science Vol.28 Issue 3, pp.480-495

Belge Tipi: Makale

Yayın Tarihi: 6/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001318000

pISSN: 2147-835X

Sepiolite

Pozzolanic activity

Calcination

StrengthSepiolite; Pozzolanic Activity; Calcination; Strengt

Sayı

Yazarlar:

Rasim Cem Saka | Serkan Subaşı

Yayıncı:

Sakarya University

Ana Başlıklar:

Civil Engineering

Dergi:

Sakarya University Journal of Science Vol.28 Issue 3, pp.480-495

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001318000

pISSN:

2147-835X