Bacteria-based concrete: from concept to market

Wiktor, Virginie; Jonkers, H.M.

doi:10.1088/0964-1726/25/8/084006

Cited by 85 publications

(31 citation statements)

References 14 publications

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“…Jonkers group in Delft University has a publication on the healing process of the cracks with different types of calcifying bacteria and the healing could be clearly seen from SEM shots clearly (Figure 3). Using a natural process for a building is the best environmental friendly and sustainable solution [11].…”

Section: Bacteria For Biodesignmentioning

confidence: 99%

Biomimetic Design for a Bioengineered World

Deniz¹,

Keskin-Gundogdu²

2018

Interdisciplinary Expansions in Engineering and Design With the Power of Biomimicry

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Biodesign can be explained as a method that includes various researches and applications related to taking inspiration from natural functions, systems, components, or processes in solving a problem. Accordingly, biodesign is commonly used in the design of artificial devices, structures, and buildings in the field of bioengineering. The recent developments in the field of biotechnology and bioengineering bring out various products that are designed in collaboration with different engineering disciplines. In this chapter, the possible use of bacteria, microalgae, and fungi for biomimetic design and the role of biomimicry for these designs will be briefly discussed.

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Section: Bacteria For Biodesignmentioning

confidence: 99%

Biomimetic Design for a Bioengineered World

Deniz¹,

Keskin-Gundogdu²

2018

Interdisciplinary Expansions in Engineering and Design With the Power of Biomimicry

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“…Tubes were also placed in the bulk of the bridge decks where they were able to fill shear cracks. In another application, bacterial self-healing concrete was used to make an irrigation canal in Ecuador liquid tight [20,21]. Alkaliphilic bacteria and calcium lactate were impregnated in light-weight aggregates.…”

Section: Introductionmentioning

confidence: 99%

“…Al-Tabbaa et al [24] reported that the panel with the microcapsules was able to heal cracks faster and more complete than a control panel, resulting in a significant impermeability recovery. Aside from the application of self-healing additives in self-healing concrete, several case studies with self-healing repair products have also been reported [9,20,21,25].…”

Section: Introductionmentioning

confidence: 99%

First Large Scale Application with Self-Healing Concrete in Belgium: Analysis of the Laboratory Control Tests

et al. 2020

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Due to the negative impact of construction processes on the environment and a decrease in investments, there is a need for concrete structures to operate longer while maintaining their high performance. Self-healing concrete has the ability to heal itself when it is cracked, thereby protecting the interior matrix as well as the reinforcement steel, resulting in an increased service life. Most research has focused on mortar specimens at lab-scale. Yet, to demonstrate the feasibility of applying self-healing concrete in practice, demonstrators of large-scale applications are necessary. A roof slab of an inspection pit was cast with bacterial self-healing concrete and is now in normal operation. As a bacterial additive to the concrete, a mixture called MUC+, made out of a Mixed Ureolytic Culture together with anaerobic granular bacteria, was added to the concrete during mixing. This article reports on the tests carried out on laboratory control specimens made from the same concrete batch, as well as the findings of an inspection of the roof slab under operating conditions. Lab tests showed that cracks at the bottom of specimens and subjected to wet/dry cycles had the best visual crack closure. Additionally, the sealing efficiency of cracked specimens submersed for 27 weeks in water, measured by means of a water permeability setup, was at least equal to 90%, with an efficiency of at least 98.5% for the largest part of the specimens. An inspection of the roof slab showed no signs of cracking, yet favorable conditions for healing were observed. So, despite the high healing potential that was recorded during lab experiments, an assessment under real-life conditions was not yet possible.

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“…The microcapsules survive in mixing and release their cargo upon fracture [6]. For the treatment of aged concrete structures, bacteria-based repair mortar and liquid systems are developed [7]. Self healing agent is alive for about 200 years but will not actively grow with in the concrete.…”

Section: Introductionmentioning

confidence: 99%

Self-Healing Properties of Steel Slag Bio Concrete

Devi¹

2018

Proceedings of the International Conference for Phoenixes on Emerging Current Trends in Engineering and Management (PECTEAM 201

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The building with crack has all the power to spoil the strength and aesthetic view and it may also lead to collapse. Crack lets in the moisture and hence the permeability increases in concrete which results in corrosion of reinforcement. As a result the tensile strength and compressive strength of the building will get reduced considerably. In this research, steel slag is used as a replacement material for fine and coarse aggregate, after comparing the properties of steel slag with the standard conventional material from 0 to 50% in steps of 10%. By inculcating bacteria in the optimum replaced steel slag concrete, in various quantities of 10ml, 20ml and 30ml, UPV (ultrasonic pulse velocity) test is conducted after 28 days of curing. The bacterium used is Bacillus subtilis, which is a gram positive cell bacterium. The increase in compressive, tensile and flexural strength of SSBC (Steel Slag Bacterial Concrete) is observed than the CC (conventional concrete) of M20 grade. No flaws are deducted in SSBC. The performance characteristics of steel slag concrete can be improved by Bacillus subtilis bacterium which can be easily cultured and safely used and moreover self healing of cracks can be made.

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Bacteria-based concrete: from concept to market

Cited by 85 publications

References 14 publications

Biomimetic Design for a Bioengineered World

Biomimetic Design for a Bioengineered World

First Large Scale Application with Self-Healing Concrete in Belgium: Analysis of the Laboratory Control Tests

Self-Healing Properties of Steel Slag Bio Concrete

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