Two-part bio-based self-healing repair agent for cement-based mortar

Name: Two-part bio-based self-healing repair agent for cement-based mortar
Author: Tezer, Mustafa Mert, Bundur, Zeynep Başaran

İsim	Two-part bio-based self-healing repair agent for cement-based mortar
Yazar	Tezer, Mustafa Mert, Bundur, Zeynep Başaran
Basım Tarihi:	2020
Basım Yeri	- International Center for Numerical Methods in Engineering
Konu	Biomineralization, Diatomaceous earth, Mortar, Pumice, Self-Healing
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2-s2.0-85122008060
Kayıt Numarası	46d82129-f6b5-4d23-a42f-fcbb9c98d5df
Lokasyon	Civil Engineering
Tarih	2020
Notlar	TÜBİTAK
Örnek Metin	Factors affecting durability of concrete structures are generally associated with each other. Due to its brittle nature, concrete can crack under stress and these cracks are one of the main reasons for a decrease in service life in concrete structures. Therefore, it is crucial to detect and recover microcracks, then to repair them as they were developed to wider cracks. Recent research in the field of concrete materials suggested that it might be possible to develop a smart cement-based material that is capable of remediate cracks by triggering biogenic calcium carbonate (CaCO3) precipitaton. This paper summarizes a study undertaken to investigate the self-healing efficiency of Sporosarcina pasteurii (S. pasteurii) cells immobilized on both diatomaceous earth and pumice, to remediate flexural cracks on mortar in early ages (28 days after mixing). To obtain a two-phase bio additive, half of the minerals were saturated with a nutrient medium consisting of urea, corn-steep liqueur(CSL) and calcium acetate and the cells with immobilized to the other half without nutrients. Screening of the healing process was done with ultrasonic pulse velocity (UPV) testing and stereomicroscopy. With this approach, the cracks on mortar surface were sealed and the water absorption capacity of the so-called self-healed mortar decreased compared to its counterpart cracked mortar samples.
DOI	10.23967/dbmc.2020.142

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Two-part bio-based self-healing repair agent for cement-based mortar

Yazar Tezer, Mustafa Mert, Bundur, Zeynep Başaran

Basım Tarihi 2020

Basım Yeri - International Center for Numerical Methods in Engineering

Konu Biomineralization, Diatomaceous earth, Mortar, Pumice, Self-Healing

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2-s2.0-85122008060

Kayıt Numarası 46d82129-f6b5-4d23-a42f-fcbb9c98d5df

Lokasyon Civil Engineering

Tarih 2020

Notlar TÜBİTAK

Örnek Metin Factors affecting durability of concrete structures are generally associated with each other. Due to its brittle nature, concrete can crack under stress and these cracks are one of the main reasons for a decrease in service life in concrete structures. Therefore, it is crucial to detect and recover microcracks, then to repair them as they were developed to wider cracks. Recent research in the field of concrete materials suggested that it might be possible to develop a smart cement-based material that is capable of remediate cracks by triggering biogenic calcium carbonate (CaCO3) precipitaton. This paper summarizes a study undertaken to investigate the self-healing efficiency of Sporosarcina pasteurii (S. pasteurii) cells immobilized on both diatomaceous earth and pumice, to remediate flexural cracks on mortar in early ages (28 days after mixing). To obtain a two-phase bio additive, half of the minerals were saturated with a nutrient medium consisting of urea, corn-steep liqueur(CSL) and calcium acetate and the cells with immobilized to the other half without nutrients. Screening of the healing process was done with ultrasonic pulse velocity (UPV) testing and stereomicroscopy. With this approach, the cracks on mortar surface were sealed and the water absorption capacity of the so-called self-healed mortar decreased compared to its counterpart cracked mortar samples.

DOI 10.23967/dbmc.2020.142