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Crack Healing in Cementitious Mortars Using EnzymeInduced

Crack Healing in Cementitious Mortars Using EnzymeInduced

Crack Healing in Cementitious Mortars Using Enzyme-Induced ...

1 Crack Healing in Cementitious Mortars using Enzyme Induced Carbonate Precipitation (EICP): Quantification Based on Fracture Response Akash Dakhane*, Sumanta

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Crack Healing in Cementitious Mortars Using Enzyme-Induced ...

Apr 04, 2018  This paper evaluates a nonmicrobial means of carbonate precipitation to heal cracks in concrete. Enzyme-induced carbonate precipitation (EICP) that relies on

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Crack healing in cementitious mortars using enzyme-induced ...

Apr 01, 2018  Crack healing in cementitious mortars using enzyme-induced carbonate precipitation: Quantification based on fracture response Akash Dakhane, Sumanta Das, Hannah

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Crack Healing in Cementitious Mortars Using Enzyme-Induced ...

Crack Healing in Cementitious Mortars Using Enzyme-Induced Carbonate Precipitation: Quantification Based on Fracture Response April 2018 Journal of Materials in Civil

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Crack Healing in Cementitious Mortars Using Enzyme-Induced ...

Crack Healing in Cementitious Mortars Using Enzyme-Induced Carbonate Precipitation: Quantification Based on Fracture Response By Akash Dakhane, Sumanta Das, Hannah

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A Review on Role of Enzymes and Microbes in Healing Cracks ...

May 29, 2021  Crack healing in cementitious mortars using enzyme-induced carbonate precipitation: Quantification based on fracture response. Journal of Materials in Civil

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An enzymatic self-healing cementitious material ...

Jun 01, 2021  1.1. Comparison to other biologic-based methods. Small non-structural cracks in cement paste structures can be repaired via several self-healing pathways, which are modern alternatives to epoxy crack sealing or mortar patching, summarized in .Some of these are the traditional autogenous healing methods as microencapsulation of mineral, polymer, or bacterial healing agents , healing cracks

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Concrete crack rehabilitation using biological enzyme

up to 0.46 mm-wide cracks in bacterial concrete compared to only up to 0.18 mm-wide cracks in control specimens after 100 days submersion in water (Wiktor and Jonkers, 2011). Application of microcapsules to encapsulate bacterial spores for self-healing concrete indicated that the healing Concrete crack rehabilitation using biological enzyme

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CRACK HEALING IN CEMENTITIOUS MATERIALS INCLUDING TESTS ...

Apr 07, 2020  Microbial induced calcite precipitation was used to heal cracks in concrete with calcite using bacillus bacteria in alkaline conditions to generate a calcite filling material. Self healing of cracked prisms was determined using a water flow and absorption test and the results were expressed to record the healing as a percentage.

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Peer Reviewed Journal Publications Neithalath Lab

Crack Healing in Cementitious Mortars using Enzyme Induced Carbonate Precipitation (EICP): Quantification Based on Fracture Response, ASCE Journal of Materials in Civil Engineering, DOI: 10.1061/(ASCE)MT.1943-5533.0002218 Go To Page

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Cracking and Healing of Engineered Cementitious

crack widths for self-healing to occur in concrete under various environmental exposure conditions: 5 to 10 μm,42 53 μm,43 100 μm,44 150 μm,32 200 μm,45 205 μm,46 and 300 μm.47 These results, despite their wide range, imply that a tighter crack width is favorable for self-healing to occur within the crack. A tight crack width, however ...

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Healing of Generated Cracks in Cement Mortar Using MICP ...

Abstract. This research is carried out to investigate pre-existing repair cracks in cement mortar using the microbiologically induced calcium carbonate precipitation (MICP) technology. In the study, 20-cylinder mortar samples (45 mm in diameter and 40 mm in length) were split to have cracked

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Performance studies on rate of self healing in bio concrete

C. Perla, N. Neithalath, Crack healing in cementitious mortars using enzyme- induced carbonate precipitation: quantification based on fracture response, J. Mater.

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Development of Autonomous-Healing Mortar Using Geobacillus ...

Jan 01, 2021  The performance of alginate-encapsulated Geobacillus stearothermophilus (AE-GS) in the mortar mixture as a self-healing agent was measured by compressive strength, water absorption, and crack-healing efficiency. The precipitation of calcium carbonate of the AE-GS mortar was measured using thermogravimetric analysis (TGA).

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Frontiers The Application of Lysinibacillus sphaericus ...

Keywords: microbially-induced calcium carbonate precipitation, Lysinibacillus sphaericus, biocalcification, crack healing, surface treatment, concrete. Citation: Farrugia C, Borg RP, Ferrara L and Buhagiar J (2019) The Application of Lysinibacillus sphaericus for Surface Treatment and Crack Healing in Mortar

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‪Sumanta Das‬ - ‪Google Scholar‬

Crack healing in cementitious mortars using enzyme-induced carbonate precipitation: Quantification based on fracture response A Dakhane, S Das, H Hansen, S O’Donnell, F Hanoon, A Rushton, ... Journal of Materials in Civil Engineering 30 (4), 04018035 , 2018

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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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Efficient option of industrial wastewater resources in ...

Apr 21, 2020  Since the formation of pores in cement mortar by cement-hydration reactions are small to survive 8,31,35 the microorganisms, it is necessary a significant larger pore size within the cement mortar ...

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The effect of isolated Bacillus ureolytic bacteria in ...

Sep 09, 2021  Reinforcement corrosion and the concrete strength reduction are critical problems that resulted from crack creation in concrete. Very expensive and hazardous technologies based on chemical materials have been provided for repairing the cracks. Recently, crack repair using bio-catalysis precipitating bacteria has been developed as a viable and ecofriendly alternative technique.

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Mitigation of Dust Emissions of Silty Sand Induced by Wind ...

Jan 06, 2021  Dakhane A, Das S, Hansen H, O’Donnell S, Hanoon F, Rushton A, Perla C, Neithalath N (2018) Crack healing in cementitious mortars using enzyme-induced carbonate precipitation: quantification based on fracture response. J Mater Civ Eng 30(4):04018035. Article Google Scholar 11.

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‪Sumanta Das‬ - ‪Google Scholar‬

Crack healing in cementitious mortars using enzyme-induced carbonate precipitation: Quantification based on fracture response A Dakhane, S Das, H Hansen, S O’Donnell, F Hanoon, A Rushton, ... Journal of Materials in Civil Engineering 30 (4), 04018035 , 2018

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Publications Center for Bio-mediated and Bio-inspired ...

Aug 01, 2019  Crack Healing in Cementitious Mortars using Enzyme Induced Carbonate Precipitation (EICP): Quantification Based on Fracture Response. ASCE Journal of Materials in Civil Engineering. Thrust 4: Subsurface Exploration and Excavation

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Enzyme-catalysed mineralisation experiment study to ...

Jun 30, 2020  Hamdan, N. K. Kavazanjian, E. Jr. Enzyme-induced carbonate mineral precipitation for fugitive dust control. ... Dakhane, A. et al. Crack healing in cementitious mortars using enzyme-induced ...

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Concrete crack-healing materials using biocalcification by ...

concrete matrix [2]. Hence, self-healing concrete using polymers, inorganic material, and bacteria has received increasing attention in recent years. In particular, self-healing concrete is an environmental-friendly and sustainable crack-healing technology, in that it undergoes CaCO 3 precipitation and seals cracks.

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Self-Healing Efficiency of Cementitious Materials ...

Nov 28, 2013  Autonomous crack healing of cementitious composite, a construction material that is susceptible to cracking, is of great significance to improve the serviceability and to prolong the longevity of concrete structures. In this study, the St-DVB microcapsules enclosing epoxy resins as the adhesive agent were embedded in cement paste to achieve self-healing capability.

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A cost-effective bacteria-based self-healing cementitious ...

Swelling and the formation of bacteria induced mineral precipitation providing the bead with considerable crack healing potential. It is estimated, based on the bacteria-based beads costing roughly 0.7 €.kg-1, that bacteria-based self-healing concrete made using these beads would cost 135 €.m-3.

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Crystals Special Issue : New Frontiers in Cementitious ...

In this study, the effects of curing conditions and supplementary cementitious materials (SCMs) on autogenous self-healing of early age cracks in cement mortar were investigated. Three curing conditions, i.e., standard curing, wet–dry cycles and incubated in water, and two SCMs, i.e., fly ash (FA) and blast furnace slag (BFS) with various ...

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Production of bioconcrete with improved durability ...

Apr 22, 2021  Microbial-based self-healing of concrete represents innovative technology for improving micro-crack sealing. Microbial bioactivity can induce calcite-precipitation in concrete, which seals micro-cracks. In this respect, two Egyptian bacterial isolates were selected and identified, as Bacillus subtilis (Bs) and Bacillus megaterium (Bm) using MALDI-TOF/MS-Biotyper®.

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(PDF) Crack Self-healing of Cementitious Composites Using ...

The produced self-healing pellets with a diameter range of 0.6-4.75 mm were added to mortar concrete samples in three dosages of 5%, 10%, and 15% by weight as partial sand replacement and all ...

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Self-Healing Concrete and Cementitious Materials IntechOpen

Oct 18, 2019  The typical crack sealing pattern in 28 days: (a) 100% PC cement mix and (b) cement with expansive minerals (Reproduced from [ 17 ]). Expansive minerals combination, that is, MgO, bentonite clay and quicklime can improve the autogenous self-healing capacity of drying shrinkage cracks in the cementitious materials.

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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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New Concrete Can Heal Millimeter Cracks in 24 Hours for ...

Jun 15, 2021  Applied Materials Today – An enzymatic self-healing cementitious material. Highlights • Inspired by the extremely efficient process of CO2 transport in cells, a self-activated healing mechanism for a cementitious matrix is proposed using Carbonic Anhydrase (CA) enzyme.

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The Utilization of Soybean as a Catalyst Material in ...

The effect of using soybean as a catalyst in the Enzyme-Mediated Calcite Precipitation (EMCP) method of crack healing concrete is discussed in this research. The existence of cracks in concrete reduces its quality, therefore, there is the need for repair efforts and one of these is through injection using the EMCP method.

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A Study on the Manufacturing Properties of Crack Self ...

Oct 01, 2017  We fabricated crack self-healing capsules using cement powder for mixing into cement composites and evaluated the properties of the capsule manufacturing process in this study. The manufacture of the self-healing capsules is divided into core production processing of granulating cement in powder form and a coating process for creating a wall on the surfaces of the granulated cement

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