Investigation of the Effect of Sodium Alginate Density on Cementing Solution Injection in Microbial Induced Calcite Precipitation (MICP) Technique

N.A.

Makale detayları

Investigation of the Effect of Sodium Alginate Density on Cementing Solution Injection in Microbial Induced Calcite Precipitation (MICP) Technique

Yazarlar:

N.A.

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1241-1249

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296384

pISSN:

2148-2446

Anahtar kelimeler:

Özet:

 Today, many different methods are used to improve soils. Since many of these methods contain environmentally harmful components, alternative soil improvement methods are needed. In this context, the engineering properties of soils can be improved with the Microbial Induced Calcite Precipitation MICP technique, which emerged as an environmentally friendly approach to soil improvement methods. However, one of the problems encountered in improving soils with the MICP technique is the application time. It is understood that different applications are needed for the MICP technique, which has a very long application time. For this purpose, the injection properties of sodium alginate, a biopolymer type that can reduce the application time when added to the cementing solution calcium chloride, were investigated. Sodium alginate solution prepared in different densities was injected into the soil. Its distribution in the soil was followed during the application; the results were evaluated by permeability test and Scanning Electron Microscope SEM analysis. As a result, using sodium alginate in addition to the cementing solution had positive results on permeability at all densities 0.1 gl, 0.3 gl, 0.6 gl. At lower densities 0.1 gl, the application time was slightly longer, but a more homogeneous distribution could be obtained with better permeability results. It was observed that the gel structure formed as a result of SEM analyses formed a bond between the grains. It has been evaluated that using sodium alginate at low densities up to 0.1 gl in soil improvement applications made with the MICP technique may positively affect the application time.

 Today, many different methods are used to improve soils. Since many of these methods contain environmentally harmful components, alternative soil improvement methods are needed. In this context, the engineering properties of soils can be improved with the Microbial Induced Calcite Precipitation MICP technique, which emerged as an environmentally friendly approach to soil improvement methods. However, one of the problems encountered in improving soils with the MICP technique is the application time. It is understood that different applications are needed for the MICP technique, which has a very long application time. For this purpose, the injection properties of sodium alginate, a biopolymer type that can reduce the application time when added to the cementing solution calcium chloride, were investigated. Sodium alginate solution prepared in different densities was injected into the soil. Its distribution in the soil was followed during the application; the results were evaluated by permeability test and Scanning Electron Microscope SEM analysis. As a result, using sodium alginate in addition to the cementing solution had positive results on permeability at all densities 0.1 gl, 0.3 gl, 0.6 gl. At lower densities 0.1 gl, the application time was slightly longer, but a more homogeneous distribution could be obtained with better permeability results. It was observed that the gel structure formed as a result of SEM analyses formed a bond between the grains. It has been evaluated that using sodium alginate at low densities up to 0.1 gl in soil improvement applications made with the MICP technique may positively affect the application time.

 Today, many different methods are used to improve soils. Since many of these methods contain environmentally harmful components, alternative soil improvement methods are needed. In this context, the engineering properties of soils can be improved with the Microbial Induced Calcite Precipitation MICP technique, which emerged as an environmentally friendly approach to soil improvement methods. However, one of the problems encountered in improving soils with the MICP technique is the application time. It is understood that different applications are needed for the MICP technique, which has a very long application time. For this purpose, the injection properties of sodium alginate, a biopolymer type that can reduce the application time when added to the cementing solution calcium chloride, were investigated. Sodium alginate solution prepared in different densities was injected into the soil. Its distribution in the soil was followed during the application; the results were evaluated by permeability test and Scanning Electron Microscope SEM analysis. As a result, using sodium alginate in addition to the cementing solution had positive results on permeability at all densities 0.1 gl, 0.3 gl, 0.6 gl. At lower densities 0.1 gl, the application time was slightly longer, but a more homogeneous distribution could be obtained with better permeability results. It was observed that the gel structure formed as a result of SEM analyses formed a bond between the grains. It has been evaluated that using sodium alginate at low densities up to 0.1 gl in soil improvement applications made with the MICP technique may positively affect the application time.

 Günümüzde zeminlerin iyileştirilmesi için birçok farklı metot kullanılmaktadır. Bu metotların birçoğu çevreye zararlı bileşenler içerdiğinden alternatif zemin iyileştirme yöntemlerine ihtiyaç duyulmaktadır. Bu kapsamda zemin iyileştirme yöntemlerine çevreci bir yaklaşım olarak ortaya çıkan Mikrobiyal Aracılı Kalsit Çökelmesi MICP tekniği ile zeminlerin mühendislik özellikleri iyileştirilebilmektedir. Ancak MICP tekniği ile zeminlerin iyileştirilmesinde karşılaşılan problemlerden biri uygulama süresidir. Uygulama süresi genelde oldukça fazla olan MICP tekniği için farklı uygulamalara ihtiyaç duyulduğu anlaşılmaktadır. Bu amaçla çalışmamızda çimentolama solüsyonuna kalsiyum klorür ilave edildiğinde uygulama süresini azaltabilecek bir biyopolimer türü olan sodyum aljinatın enjeksiyon özellikleri incelenmiştir. Farklı yoğunluklarda hazırlanan sodyum aljinat solüsyonu zemine enjeksiyon yöntemiyle verilerek zemin içerisindeki dağılımı uygulama süresince takip edilmiş ve sonuçlar permeabilite deneyi ve Taramalı Elektron Mikroskobu SEM analizi ile değerlendirilmiştir. Sonuç olarak çimentolama solüsyonuna ilaveten sodyum aljinat kullanımının tüm yoğunluklarda 0.1 gl, 0.3 gl, 0.6 gl permeabilite üzerinde olumlu sonuçları olmuştur. Daha düşük yoğunluklarda ise 0.1 gl uygulama süresi biraz daha artmış ancak daha iyi geçirimlilik sonuçlarıyla beraber daha homojen bir dağılım elde edilebilmiştir. SEM analizleri sonucunda oluşan jel yapının taneler arasında bağ oluşturduğu gözlemlenmiştir. MICP tekniği ile zeminlerin iyileştirmesinde düşük yoğunluklarda en fazla 0.1 gl sodyum aljinat kullanımının uygulama süresine olumlu etkisinin olabileceği değerlendirilmiştir.

Makale detayları

Investigation of the Effect of Sodium Alginate Density on Cementing Solution Injection in Microbial Induced Calcite Precipitation (MICP) Technique

Yazarlar:

N.A.

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1241-1249

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296384

pISSN:

2148-2446

sodium alginate

Soil Improvement

MICPSodyum aljinat

Zemin İyileştirme

MICP

Sayı

Makale detayları

Investigation of the Effect of Sodium Alginate Density on Cementing Solution Injection in Microbial Induced Calcite Precipitation (MICP) Technique

Yazarlar: N.A.

Yayıncı: Duzce University

Ana Başlıklar: Mühendislik

Dergi: Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1241-1249

Belge Tipi: Makale

Yayın Tarihi: 7/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001296384

pISSN: 2148-2446

sodium alginate

Soil Improvement

MICPSodyum aljinat

Zemin İyileştirme

MICP

Sayı

Yazarlar:

N.A.

Yayıncı:

Duzce University

Ana Başlıklar:

Mühendislik

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1241-1249

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296384

pISSN:

2148-2446