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optimization of a binary concrete crack selfhealing

optimization of a binary concrete crack selfhealing

Optimization of a Binary Concrete Crack Self-Healing ...

materials Article Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen Jinlong Zhang 1,2,3, Bixia Mai 1, Tingwei Cai 1, Jiayi Luo 1, Wanhan Wu 1, Bing Liu 2, Ningxu Han 2, Feng Xing 2,3,* and Xu Deng 1,* 1 Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University,

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Optimization of a Binary Concrete Crack Self-Healing ...

Jan 26, 2017  Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen Jinlong Zhang , 1, 2, 3 Bixia Mai , 1 Tingwei Cai , 1 Jiayi Luo , 1 Wanhan Wu , 1 Bing Liu , 2 Ningxu Han , 2 Feng Xing , 2, 3, * and Xu Deng 1, *

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Optimization of a Binary Concrete Crack Self-Healing ...

Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen Jinlong Zhang, Bixia Mai, Tingwei Cai, Jiayi Luo, Wanhan Wu, Bing Liu, Ningxu Han, Feng Xing, Xu Deng; Affiliations Jinlong Zhang Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography ...

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Optimization of a Binary Concrete Crack Self-Healing ...

Lactate is the best carbon source and nitrate is the best nitrogen source for aerobic incubation. This work has laid a foundation of ternary self-healing system containing bacteria, ORT, and nutrients, which will be promising for the self-healing of cracks deep inside the concrete structure.

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Materials, Vol. 10, Pages 116: Optimization of a Binary ...

Materials, Vol. 10, Pages 116: Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen An optimized strategy for the enhancement of microbially induced calcium precipitation including spore viability ensurance, nutrient selection and O2 supply was developed.

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A binary concrete crack self-healing system containing ...

10%  Jul 26, 2016  The ternary self-healing system will be encapsulated as the core material into a water-proof microcapsule and then introduced into concrete structure for the self healing of cracks. References Achal V, Mukerjee A, Sudhakara Reddy M (2013) Biogenic treatment improves the durability and remediates the cracks of concrete structures.

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Screening of bacteria for self-healing of concrete cracks ...

A novel high-throughput strategy was developed to determine the calcium precipitation activity (CPA) of mineralization bacteria used for self-healing of concrete cracks. A bacterial strain designated as H4 with the highest CPA of 94.8 % was screened and identified as a Bacillus species based on 16S

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Self-Healing of Concrete Cracks by Ceramsite-Loaded ...

Jun 24, 2018  Protective carrier is essential for the self-healing of concrete cracks by microbially induced CaCO 3 precipitation, owing to the harsh conditions in concrete. In this paper, porous ceramsite particles are used as microbial carrier. Heat treatment and NaOH soaking are first employed to improve the loading content of the ceramsite. The viability of bacterial spores is assessed by urea ...

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A REVIEW ON SELF-HEALING CONCRETE USING BACTERIA ...

Jan 01, 2018  Recent interests in the field of Bio-technology and Civil Engineering have raised the topics on the precipitation of Calcium Carbonate by certain bacteria strains. The relationship between cracks and possible self-healing techniques; artificial and natural are considered. Importance has been laid on the bio-mineralization process and the mechanism of bacterial concrete.

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A correlation study on optimum conditions of microbial ...

Jul 01, 2020  Optimization of a binary concrete crack self-healing system containing bacteria and oxygen. Materials, 10 (2) (2017), pp. 1-11. CrossRef View Record in Scopus Google Scholar. J. Xu, X. Wang. Self-healing of concrete cracks by use of bacteria-containing low alkali cementitious material. Constr Build Mater, 167 (4) (2018), pp. 1-14.

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A mathematical model for bacterial self-healing of cracks ...

Mar 15, 2012  In the current research, a mathematical model for bacterial self-healing of a crack is considered. The study is embedded within the framework of investigating the potential of bacteria to act as a catalyst of the self-healing process in concrete, which is the ability of concrete to repair occurring cracks autonomously.

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Materials Special Issue : Self-Healing Concrete

Nov 15, 2016  Therefore, several concepts for self-healing concrete have been fundamentally explored, primarily during the last 10 years, with very promising results. The intrinsic mechanism of crack healing in cementitious materials, due to hydration of unhydrated binder particles and precipitation of carbonate, is called autogenous healing.

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Jinlong ZHANG PhD Student PhD student Shenzhen ...

Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen. Article. ... (CPA) of mineralization bacteria used for self-healing of concrete cracks. A bacterial ...

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邓 旭 - 《深圳大学学报理工版》

[4] A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca 2+-precipitation performance. Applied Microbiology and Biotechnology, 2016, 100(24):10295-10306 [5] Screening of bacteria for self-healing of concrete cracks and optimization of the microbial calcium precipitation process.

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The Prediction of Self-Healing Capacity of Bacteria-Based ...

bacteria-based self-healing concrete and can contribute to the design in the rest of industrial engineering. Keywords: Bacteria, self-healing concrete, crack closure percentagemachine , learning, prediction. 1 Introduction . Concrete is the most widely used

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Performance of shcc with bacteria for concrete patch ...

The overall performance of concrete patch repair systems depends on the durability of and compatibility between the concrete substrate and the repair material. This paper investigates the performance of a new type of SHCC material with embedded bacteria as a repair material. The bacteria are a healing agent to enhance the durability of the repair system.

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1. Introduction

Protective carrier is essential for the self-healing of concrete cracks by microbially induced ... and Building Materials 2017 148 610 617 10.1016/j.conbuildmat.2017.05.021 2-s2.0-85019187818 20 Zhang J. L. Mai B. X. Cai T. W. Optimization of a binary concrete crack self-healing system containing bacteria and oxygen Materials 2017 10 2 116 10 ...

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自2012至2017年发表的部分SCI检索的学术论文 (一)-广东省滨海

A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca2+-precipitation performance, APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, Vol. 100, No.24, 2016, 10295-10306

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Self-healing material - Wikipedia

Self-healing materials are artificial or synthetically-created substances that have the built-in ability to automatically repair damages to themselves without any external diagnosis of the problem or human intervention. Generally, materials will degrade over time due to fatigue, environmental conditions, or damage incurred during operation. Cracks and other types of damage on a microscopic ...

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Bacillus sphaericus LMG 22257 is physiologically suitable ...

Apr 01, 2017  A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca 2+-precipitation performance. Zhang JL, Wang CG, Wang QL, Feng JL, Pan W, Zheng XC, Liu B, Han NX, Xing F, Deng X. Appl Microbiol Biotechnol, 100(24):10295-10306, 26 Jul 2016

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Optimization of a Binary Concrete Crack Self-Healing ...

Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen . By Jinlong Zhang, ... ORT, and nutrients, which will be promising for the self-healing of cracks deep inside the concrete structure Topics: microbially induced calcium precipitation, spore vialility, oxygen supply, self healing, concrete crack, Bacillus ...

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Optimization of a Binary Concrete Crack Self-Healing ...

Optimization of a Binary Concrete Crack Self-Healing System Containing Bacteria and Oxygen By Jinlong Zhang, Bixia Mai, Tingwei Cai, Jiayi Luo, Wanhan Wu, Bing Liu,

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Bio-inspired self-healing of concrete cracks using new B ...

May 01, 2021  1. Introduction. Concrete cracks are almost inevitable. This is unsurprising, as concrete matrix has been relatively regarded for its brittleness and heterogeneity [1,2].These cracks can be created even without any external load from early-age thermal gradient, bleeding, shrinkage, expensive reaction and so on [, , ].Given this, the formation and existence of concrete microcracks, especially ...

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Performance optimization of one-component polyurethane ...

Aug 10, 2018  Fig. 11 describes the healing efficiency of self-healing concrete after embedding the capsule containing healing agent E. After the reloading of the self-healing specimens, crack formation was observed at the healed locations, suggesting that the latter remained the points of weakness in the concrete specimens.

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Materials Special Issue : Self-Healing Concrete

Nov 15, 2016  Therefore, several concepts for self-healing concrete have been fundamentally explored, primarily during the last 10 years, with very promising results. The intrinsic mechanism of crack healing in cementitious materials, due to hydration of unhydrated binder particles and precipitation of carbonate, is called autogenous healing.

get price

Screening of bacteria for self-healing of concrete cracks ...

Feb 17, 2016  A novel high-throughput strategy was developed to determine the calcium precipitation activity (CPA) of mineralization bacteria used for self-healing of concrete cracks. A bacterial strain designated as H4 with the highest CPA of 94.8 % was screened and identified as a Bacillus species based on 16S rDNA sequence and phylogenetic tree analysis. Furthermore, the effects of certain

get price

The Prediction of Self-Healing Capacity of Bacteria-Based ...

bacteria-based self-healing concrete and can contribute to the design in the rest of industrial engineering. Keywords: Bacteria, self-healing concrete, crack closure percentagemachine , learning, prediction. 1 Introduction . Concrete is the most widely used

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Microbial healing of cracks in concrete: a review ...

Nov 01, 2017  Supplementation of concrete with healing agents to stimulate the healing action to repair cracks is known as engineered self-healing. Many researchers used different healing agents and proposed their mechanisms on cementitious materials (Table 1).Three different approaches are used to incorporate self-healing material in concrete matrix and which activates its healing property when the crack ...

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Potential application of bacteria to improve the self ...

Jan 13, 2020  Concrete is the most widely used construction material. Its material consumption is second largest after water, but it also has a few drawbacks as it gets deteriorated by ingress of moisture, gas and liquid through cracks. The deterioration of concrete is highly unacceptable. To overcome the deterioration, a process of self-healing by healing cracks in concrete has been proposed by using ...

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自2012至2017年发表的部分SCI检索的学术论文 (一)-广东省滨海

Screening of bacteria for self-healing of concrete cracks and optimization of the microbial calcium precipitation process. SCI. 164. 2016.09. A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca 2+-precipitation performance. SCI. 165. 2016.12. 徐沛,李敏辉,张小刚.

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自2012至2017年发表的部分SCI检索的学术论文 (一)-广东省滨海

A binary concrete crack self-healing system containing oxygen-releasing tablet and bacteria and its Ca2+-precipitation performance, APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, Vol. 100, No.24, 2016, 10295-10306

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Preparation of Self-healing Additives for Concrete via ...

Jan 25, 2021  Self-healing of cracked concrete, therefore, can be an answer for sustainable infrastructures, as it can inhibit the development of early age microcracks into larger cracks. Self-healing materials spontaneously heal damage without the need for detection by human or any type of manual intervention (Wool 2008).

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A mathematical model for bacterial self-healing of cracks ...

Mar 15, 2012  In the current research, a mathematical model for bacterial self-healing of a crack is considered. The study is embedded within the framework of investigating the potential of bacteria to act as a catalyst of the self-healing process in concrete, which is the ability of concrete to repair occurring cracks autonomously.

get price

Materials Special Issue : Self-Healing Concrete

Nov 15, 2016  Application of self-healing concrete was able to reduce the chloride concentration in a cracked zone by 75% or more. As a result, service life of steel reinforced self-healing concrete slabs in marine environments could amount to 60–94 years as opposed to only seven years for ordinary (cracked) concrete.

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