Investigation of the possibilities of using biomicritic limestone in Türkiye as a raw material in the production of natural hydraulic binders

Nazife Özer; Seden Acun Özgünler; Şenel Özdamar

Makale detayları

Investigation of the possibilities of using biomicritic limestone in Türkiye as a raw material in the production of natural hydraulic binders

Yazarlar:

Nazife Özer | Seden Acun Özgünler | Şenel Özdamar

Yayıncı:

Gazi University

Ana Başlıklar:

Mimarlık

Dergi:

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi Vol.39 Issue 1, pp.577-592

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289429

pISSN:

1300-1884

Anahtar kelimeler:

Özet:

 Natural hydraulic binders NHBs are produced using clayey limestones with appropriate proportions of clayey materials and calcite naturally. Natural hydraulic lime NHL and natural cement were widely used as a binder in the historical mortars from 18th century to the production of Portland cement. NHBs are calcinated at 800-1000 oC which is below the sintering temperature. Then, a finely ground clinker is sieved and used without slaking. In this study, biomicritic limestone that contains 90 calcite  5 clay  5-10 quartz was used as a raw material to produce NHBs. The raw material was ground under 10 mm and calcined in the laboratory furnace at 750-850-950-1050 oC. Eminently hydraulic lime NHL 5 were compared with them as a commercial product. Two mortar groups were produced with 145 mm consistency Y14,5 according to BS EN 1015-3 and 1:1 waterbinder ratio SS. Purpose: NHBs are widely used in repairing and conserving historical buildings. Additionally, NHBs are alternative binders to Portland cement in the production of plasters at contemporary buildings since they offer good physical and mechanical properties. In Türkiye, NHBs are imported to be used in construction. This study aims to produce NHBs by calcining clayey limestones. Theory and Methods: Experimental study consists of two parts which were to determine raw material, and to produce binders and mortars. Mortars produced were compared with the physical and mechanical properties of NHL 5 mortars. In addition, X-Ray Diffraction XRD and X-ray fluorescence XRF analyses were used to determine the chemical and mineralogical-petrographic properties of raw material and NHBs. SEM was used for the imaging of raw material. Results: The binder calcined at 850 oC M850 has a similar chemical, physical and mechanical properties to NLH 5. M950SS, M950Y14,5, M1050SS, and M1050Y14,5 fresh mortars released heat during the hydration process. After the 91st day, the strength of M750SS and M750Y14,5 mortars decreased. Conclusion: Natural hydraulic binder was produced at 850 oC M850 using biomicritic limestone in Türkiye. This binder can be used in repairing and conserving historical buildings and as a plaster for contemporary buildings.

 Natural hydraulic binders NHBs are produced using clayey limestones with appropriate proportions of clayey materials and calcite naturally. Natural hydraulic lime NHL and natural cement were widely used as a binder in the historical mortars from 18th century to the production of Portland cement. NHBs are calcinated at 800-1000 oC which is below the sintering temperature. Then, a finely ground clinker is sieved and used without slaking. In this study, biomicritic limestone that contains 90 calcite  5 clay  5-10 quartz was used as a raw material to produce NHBs. The raw material was ground under 10 mm and calcined in the laboratory furnace at 750-850-950-1050 oC. Eminently hydraulic lime NHL 5 were compared with them as a commercial product. Two mortar groups were produced with 145 mm consistency Y14,5 according to BS EN 1015-3 and 1:1 waterbinder ratio SS. Purpose: NHBs are widely used in repairing and conserving historical buildings. Additionally, NHBs are alternative binders to Portland cement in the production of plasters at contemporary buildings since they offer good physical and mechanical properties. In Türkiye, NHBs are imported to be used in construction. This study aims to produce NHBs by calcining clayey limestones. Theory and Methods: Experimental study consists of two parts which were to determine raw material, and to produce binders and mortars. Mortars produced were compared with the physical and mechanical properties of NHL 5 mortars. In addition, X-Ray Diffraction XRD and X-ray fluorescence XRF analyses were used to determine the chemical and mineralogical-petrographic properties of raw material and NHBs. SEM was used for the imaging of raw material. Results: The binder calcined at 850 oC M850 has a similar chemical, physical and mechanical properties to NLH 5. M950SS, M950Y14,5, M1050SS, and M1050Y14,5 fresh mortars released heat during the hydration process. After the 91st day, the strength of M750SS and M750Y14,5 mortars decreased. Conclusion: Natural hydraulic binder was produced at 850 oC M850 using biomicritic limestone in Türkiye. This binder can be used in repairing and conserving historical buildings and as a plaster for contemporary buildings.

 Natural hydraulic binders NHBs are produced using clayey limestones with appropriate proportions of clayey materials and calcite naturally. Natural hydraulic lime NHL and natural cement were widely used as a binder in the historical mortars from 18th century to the production of Portland cement. NHBs are calcinated at 800-1000 oC which is below the sintering temperature. Then, a finely ground clinker is sieved and used without slaking. In this study, biomicritic limestone that contains 90 calcite  5 clay  5-10 quartz was used as a raw material to produce NHBs. The raw material was ground under 10 mm and calcined in the laboratory furnace at 750-850-950-1050 oC. Eminently hydraulic lime NHL 5 were compared with them as a commercial product. Two mortar groups were produced with 145 mm consistency Y14,5 according to BS EN 1015-3 and 1:1 waterbinder ratio SS. Purpose: NHBs are widely used in repairing and conserving historical buildings. Additionally, NHBs are alternative binders to Portland cement in the production of plasters at contemporary buildings since they offer good physical and mechanical properties. In Türkiye, NHBs are imported to be used in construction. This study aims to produce NHBs by calcining clayey limestones. Theory and Methods: Experimental study consists of two parts which were to determine raw material, and to produce binders and mortars. Mortars produced were compared with the physical and mechanical properties of NHL 5 mortars. In addition, X-Ray Diffraction XRD and X-ray fluorescence XRF analyses were used to determine the chemical and mineralogical-petrographic properties of raw material and NHBs. SEM was used for the imaging of raw material. Results: The binder calcined at 850 oC M850 has a similar chemical, physical and mechanical properties to NLH 5. M950SS, M950Y14,5, M1050SS, and M1050Y14,5 fresh mortars released heat during the hydration process. After the 91st day, the strength of M750SS and M750Y14,5 mortars decreased. Conclusion: Natural hydraulic binder was produced at 850 oC M850 using biomicritic limestone in Türkiye. This binder can be used in repairing and conserving historical buildings and as a plaster for contemporary buildings.

 Tarih boyunca çok çeşitli bağlayıcılar yapılarımızda kullanılmıştır. Antik dönemlerden beri kullanılan hava kireci, hidrolik karakterli olmadığından puzolanik katkılarla birlikte kullanılmış ve suya karşı dayanımı arttırılmıştır. Hidrolik bağlayıcılar hem havada hem suda katılaşma özelliği gösteren inorganik esaslı bağlayıcılardır. 18. yüzyılda hidrolik bağlayıcıların bulunmasıyla, hava ile sertleşen bağlayıcılar zamanla yerini hidrolik esaslı bağlayıcılara, 20. yüzyılın başlangıcından sonra ise çimentoya bırakmıştır. Doğal olarak nitelendirilen bağlayıcıların diğer hidrolik bağlayıcılardan farkı üretiminde doğal olarak uygun kimyasal içeriğe sahip tek bir taş kaynağının kullanılmasıdır. Bu çalışma kapsamında, ülkemizde yaygın olarak bulunan biyomikritik kireçtaşı kaynağı ile doğal hidrolik bağlayıcı üretim olanakları deneysel olarak incelenmiştir. Hammadde özellikleri analitik olarak belirlendikten sonra 750 oC, 850 oC, 950 oC ve 1050 oC sıcaklıklarda kalsine edilmiştir. Üretilen bağlayıcılar ile birlikte ticari ürün olan kuvvetli doğal hidrolik kireç NHL 5 bağlayıcısı kullanılarak dökümler yapılmış ve sonuçlar karşılaştırmalı olarak verilmiştir. 850 oC sıcaklıkta kalsine edilen bağlayıcı ve NHL5 ile üretilen harçlar benzer fiziksel ve mekanik özellikler göstermektedir. 750 oC sıcaklıkta kalsine edilen bağlayıcıyla üretilen harçlarda serbest kirecin zamana bağlı hacim artışından kaynaklı dayanım kaybı tespit edilmiştir. 950 oC ve 1050 oC sıcaklıklarda kalsine bağlayıcı ile üretilen harçlarda ise hidratasyon sırasında ısınma ekzotermik reaksiyon tespit edilmiştir. Sonuç olarak biyomikritik kireçtaşı ile doğal hidrolik bağlayıcı üretimi sağlanmıştır.

Makale detayları

Investigation of the possibilities of using biomicritic limestone in Türkiye as a raw material in the production of natural hydraulic binders

Yazarlar:

Nazife Özer | Seden Acun Özgünler | Şenel Özdamar

Yayıncı:

Gazi University

Ana Başlıklar:

Mimarlık

Dergi:

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi Vol.39 Issue 1, pp.577-592

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289429

pISSN:

1300-1884

natural cement

natural hydraulic lime

hydraulic binder

biomicritic limestone

calcinationDoğal çimento

doğal hidrolik kireç

hidrolik bağlayıcı

biyomikritik kireçtaşı

kalsinasyon

Sayı

Makale detayları

Yazarlar: Nazife Özer | Seden Acun Özgünler | Şenel Özdamar

Yayıncı: Gazi University

Ana Başlıklar: Mimarlık

Dergi: Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi Vol.39 Issue 1, pp.577-592

Belge Tipi: Makale

Yayın Tarihi: 8/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001289429

pISSN: 1300-1884

Sayı

Yazarlar:

Nazife Özer | Seden Acun Özgünler | Şenel Özdamar

Yayıncı:

Gazi University

Ana Başlıklar:

Mimarlık

Dergi:

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi Vol.39 Issue 1, pp.577-592

Belge Tipi:

Makale

Yayın Tarihi:

8/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001289429

pISSN:

1300-1884