Smart Bio-Agents-Activated Sustainable Self-Healing Cementitious Materials: An All-Inclusive Overview on Progress, Benefits and Challenges

Huseien, Ghasan Fahim; Nehdi, Moncef L.; Faridmehr, Iman; Ghoshal, Sib Krishna; Hamzah, Hussein K.; Benjeddou, Omrane; Alrshoudi, Fahed

doi:10.3390/su14041980

Cited by 14 publications

(5 citation statements)

References 146 publications

(240 reference statements)

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“…In active mode, one has to do the needful to activate the mode while the passive mode doesn't require any human help. The process will start automatically because of the incorporate encapsulating agents like as epoxy resin, microorganisms, and acrylics, microbial bacteria, crystalline admixtures into the concrete mix to ensure recovery when cracks appear in the hardened concrete in active mode [14][15][16]. In the present work the crystalline admixtures used as a self healing agent which helps in improvement of concrete microstructure thereby reducing the concentration of Ca(OH)2 through pozzoloanic reaction thereby increasing the service life of concrete [17].…”

Section: Introductionmentioning

confidence: 95%

Experimental Study on Self Healing Concrete by using the Silicon Dioxide Nano Particles and Crystalline Admixture

Sravanthi,

Sashidhar

2024

IOP Conf. Ser.: Earth Environ. Sci.

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In this paper, the self-healing ability of fiber-reinforced concrete (M40) has been analyzed with Nano SiO2 particles (NS) as a replacement in cement, crystalline admixture (CCA) as an additive in cement and exposed for four different types of environmental exposures i.e., Water immersion (WI), Wet/Dry cycles(WD), Water contact (WC), Air exposure (AE). Specimens for eight mixes were cast, two of them are plain concrete with one of them containing 1% crystalline admixture (CCA) and the other with absence of crystalline admixture (CCA). Further Nano Silica mixes were also cast with and without CCA. Three of the mixes were having Nano silica replacement at 1%, 2% & 3% and the other were replaced with both CCA at 1% and Nano silica at 1%, 2% & 3%. The specimens were cured for 28 days, followed by crack induction in the range of 0.10-0.40 mm, and they were set for healing process. Post 42 days of healing process, healing ability of specimens were evaluated and the result shows that all the mixes have a considerable amount of healing ability and strength-regaining capability for all exposure conditions. The specimens with 2% Nano silica and 1% CCA has complete crack healing ability and 100% strength recovery for WI and WD cycle conditions.

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Section: Introductionmentioning

confidence: 95%

Experimental Study on Self Healing Concrete by using the Silicon Dioxide Nano Particles and Crystalline Admixture

Sravanthi,

Sashidhar

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…By reducing permeability, self-healing concrete significantly improves the durability of concrete, reduce inspection labour, maintenance cost, and cement production by providing safer and more sustainable materials [12]. With continued development and seamless integration of self-healing materials into modern-day applications, it is set to open a new era of enhanced consumer experience, infrastructures maintenance and environmental management, as well as countless unprecedented and unique applications [13]. In general, healing occurs due to the reactions of unhydrated particles in cementitious matrix bonding between the crack walls in the presence of chemicals and water [14].…”

Section: Introductionmentioning

confidence: 99%

Reduction in Dilapidation and High Cost of Maintenance on Buildings Using Self-Healing Concrete for Building Construction

2024

IRJMETS

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The aim of this research was to produce self-healing concrete in view of achieving sustainable concrete in an environment of resource constraints. The research design adopted was an experimental study and a total of 200 cubes of self-healing concretes were produced. Self-healing agents, cement, and aggregates were purchased from nearby suppliers. Calcium alginate /Polyurethane, and Isophorone diisocyanate were used to produce the microcapsules that housed the self-healing agents. The production process of the self-healing concrete involved batching, mixing, casting, and curing. It was observed from the experiment conducted that after induction of cracks on the self-healing concrete produced, the cracks on the concrete cubes started decreasing (self-healing) in the presence of water after 5days by the formation of a white/gray deposit on the cracked surfaces of the concrete, and were completely healed within 25days. The finding also reviewed that the healed concretes have a high compressive strength. Therefore, with adequate introduction of self-healing agents as an ingredient during concrete production, cracks both visible and invisible will be dealt with easily with no stress and financial burden. However, if self-healing concrete is not applied/used during building constructions, such buildings will be vulnerable to high cost of maintenance and dilapidation.

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“…The EM solution (5, 10, and 15% as water replacement) self-compacting concretes were designed by Rizwan et al [ 17 ] to determine their effects on the enhanced strength properties, plastic viscosity, setting times, hydration kinetics, and volume stability together with decreased water absorption of the proposed cement pastes in a hardened state. Many studies [ 18 , 19 , 20 , 21 , 22 ] acknowledged that the addition of EM solution into the concrete matrix could improve its resistance to corrosion attacks. Briefly, for structural purposes, the modified bio-concretes containing EM solutions generated renewed interest in the construction industries because of their excellent workability, mechanical, and durable performances.…”

Section: Introductionmentioning

confidence: 99%

Effective Microorganism Solution and High Volume of Fly Ash Blended Sustainable Bio-Concrete

2022

Self Cite

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Currently, the production of sustainable concrete with high strength, durability, and fewer environmental problems has become a priority of concrete industries worldwide. Based on this fact, the effective microorganism (EM) solution was included in the concrete mixtures to modify the engineering properties. Concrete specimens prepared with 50% fly ash (FA) as an ordinary Portland cement (OPC) replacement were considered as the control sample. The influence of EM solution inclusion (at various contents of 0, 5, 10, 15, 20, and 25% weight) in the cement matrix as water replacement was examined to determine the optimum ratio that can enhance the early and late strength of the proposed bio-concrete. The compressive strength, porosity, carbonation depth, resistance to sulphuric acid attack, and the environmental benefits of the prepared bio-concrete were evaluated. The results showed that the mechanical properties and durability performance of the bio-concrete were improved due to the addition of EM and FA. Furthermore, the inclusion of 10% EM could increase the compressive strength of the bio-concrete at 3 (early) and 28 days by 42.5% and 14.6%, respectively. The durability performance revealed a similar trend wherein the addition of 50% FA and 10% EM into the bio-concrete could improve its resistance against acid attack by 35.1% compared to the control specimen. The concrete mix designed with 10% EM was discerned to be optimum, with approximately 49.3% lower carbon dioxide emission compared to traditional cement.

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Smart Bio-Agents-Activated Sustainable Self-Healing Cementitious Materials: An All-Inclusive Overview on Progress, Benefits and Challenges

Cited by 14 publications

References 146 publications

Experimental Study on Self Healing Concrete by using the Silicon Dioxide Nano Particles and Crystalline Admixture

Experimental Study on Self Healing Concrete by using the Silicon Dioxide Nano Particles and Crystalline Admixture

Reduction in Dilapidation and High Cost of Maintenance on Buildings Using Self-Healing Concrete for Building Construction

Effective Microorganism Solution and High Volume of Fly Ash Blended Sustainable Bio-Concrete

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