Impact of air entraining admixtures on biogenic calcium carbonate precipitation and bacterial viability

Name: Impact of air entraining admixtures on biogenic calcium carbonate precipitation and bacterial viability
Author: Bundur, Zeynep Başaran, Amiri, Ali, Ersan, Y. C., Boon, N., Belie, N. de

İsim	Impact of air entraining admixtures on biogenic calcium carbonate precipitation and bacterial viability
Yazar	Bundur, Zeynep Başaran, Amiri, Ali, Ersan, Y. C., Boon, N., Belie, N. de
Basım Tarihi:	2017
Basım Yeri	- Elsevier
Konu	Biomineralization, Air entraining admixture (D), Calcium carbonate (D), Cement paste (D), Thermal analysis (B)
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0008-8846
Kayıt Numarası	2d1dd567-3873-4198-bdc8-26501180032a
Lokasyon	Civil Engineering
Tarih	2017
Örnek Metin	The applications of self-healing in cement-based materials via biomineralization processes are developing quickly. The main challenge is to find a microorganism that can tolerate the restricted environment of cement paste matrix (i.e. very high pH, lack of oxygen and nutrients, small pore size etc.). The focus of this work was to determine the possible use of an ammonium salt-based air-entraining admixture (AEA) as a protection method to improve the survival of incorporated Sporosarcina pasteurii cells in cement-based mortar. Bacterial cells were directly added to the mortar mix with and without nutrients. Nutrients should be provided to keep the microorganisms viable even at early ages (i.e. 7 days). Surface charge of the bacterial cells and in vitro biogenic calcium carbonate (CaCO3) precipitation were not affected by the incorporation of AEA. However, introducing AEA did not influence the viability in mortar samples, which might be attributed to the type and chemistry of AEA used.
DOI	10.1016/j.cemconres.2017.04.005
Cilt	98

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Impact of air entraining admixtures on biogenic calcium carbonate precipitation and bacterial viability

Yazar Bundur, Zeynep Başaran, Amiri, Ali, Ersan, Y. C., Boon, N., Belie, N. de

Basım Tarihi 2017

Basım Yeri - Elsevier

Konu Biomineralization, Air entraining admixture (D), Calcium carbonate (D), Cement paste (D), Thermal analysis (B)

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0008-8846

Kayıt Numarası 2d1dd567-3873-4198-bdc8-26501180032a

Lokasyon Civil Engineering

Tarih 2017

Örnek Metin The applications of self-healing in cement-based materials via biomineralization processes are developing quickly. The main challenge is to find a microorganism that can tolerate the restricted environment of cement paste matrix (i.e. very high pH, lack of oxygen and nutrients, small pore size etc.). The focus of this work was to determine the possible use of an ammonium salt-based air-entraining admixture (AEA) as a protection method to improve the survival of incorporated Sporosarcina pasteurii cells in cement-based mortar. Bacterial cells were directly added to the mortar mix with and without nutrients. Nutrients should be provided to keep the microorganisms viable even at early ages (i.e. 7 days). Surface charge of the bacterial cells and in vitro biogenic calcium carbonate (CaCO3) precipitation were not affected by the incorporation of AEA. However, introducing AEA did not influence the viability in mortar samples, which might be attributed to the type and chemistry of AEA used.

DOI 10.1016/j.cemconres.2017.04.005

Cilt 98