Sugar-coated expanded perlite as a bacterial carrier for crack-healing concrete applications

Jiang, Liting; Jia, Guanhua; Jiang, Chen; Li, Zhu

doi:10.1016/j.conbuildmat.2019.117222

Cited by 108 publications

(50 citation statements)

References 23 publications

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“…Various inorganic porous materials have been used by researchers recently (Alazhari et al 2018), such as materials are: graphite nano-platelets (Khaliq and Ehsan 2016), ceramsite (Chen et al 2016), lightweight aggregates (Chen et al 2019;Zhang et al 2017), hydrogel (Wang et al 2014), zeolite (Bhaskar et al 2017), polyurethane, glass tubes (Wang et al 2010), as well as expanded clay particles or expanded perlite (Jiang et al 2020). These porous materials are employed as carriers protecting the bacteria from the concrete unfavorable alkaline environment.…”

Section: Effect Of Bacteria On Concrete Criteriamentioning

confidence: 99%

Review: Microbial induced mineralization of calcium carbonate for self-healing concrete

Elkhateeb

Elnahas

Daba

2021

Asian J Nat Prod Biochem

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Abstract. Elkhateeb WA, Elnahas MO, Daba GM. 2021. Review: Microbial induced mineralization of calcium carbonate for self-Healing concrete. Asian J Nat Prod Biochem 19: 1-9. Low-cost solutions achieving concrete self-healing are attracting researchers attention. Generally, concrete self-healing mechanism has been so far accomplished by three approaches: autogenous healing, encapsulation of polymeric material, and microbial induced mineralization of calcium carbonate. Microbial approach seems like an attractive potent, relatively cheap way to achieve concrete self-healing. Hence, this review elucidates the microbial concrete self-healing mechanisms, and compare the roles of fungal and bacterial mediated self-healing concrete.

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Section: Effect Of Bacteria On Concrete Criteriamentioning

confidence: 99%

Review: Microbial induced mineralization of calcium carbonate for self-healing concrete

Elkhateeb

Elnahas

Daba

2021

Asian J Nat Prod Biochem

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“…Many researchers have used inorganic porous materials [47]. These include: ceramsite [48], polyurethane and glass tubes [49], lightweight aggregates [50,51], graphite nano-platelets [52], hydrogel [53], zeolite [39] as well as expanded clay particles, expanded perlite [54], and diatomaceous earth. They were used as carriers to protect bacteria from the alkaline environment of concrete.…”

Section: Self-healing Properties Induced By Bacteriamentioning

confidence: 99%

“…In the "pores", an environment is created for the safe growth of bacteria. The authors of [54] used sugar coating to immobilize bacteria and nutrients. A kind of cocoon was made, in which the bacteria were immobilized in a porous carrier (perlite), on which a layer of nutrients was applied.…”

Section: Self-healing Properties Induced By Bacteriamentioning

confidence: 99%

Bacterial Concrete as a Sustainable Building Material?

Stanaszek-Tomal

2020

Sustainability

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The right selection of building materials plays an important role when designing a building to fall within the definition of sustainable development. One of the most commonly used construction materials is concrete. Its production causes a high energy burden on the environment. Concrete is susceptible to external factors. As a result, cracks occur in the material. Achieving its durability along with the assumptions of sustainable construction means there is a need to use an environmentally friendly and effective technique of alternative crack removal in the damaged material. Bacterial self-healing concrete reduces costs in terms of detection of damage and maintenance of concrete structures, thus ensuring a safe lifetime of the structure. Bacterial concrete can improve its durability. However, it is not currently used on an industrial scale. The high cost of the substrates used means that they are not used on an industrial scale. Many research units try to reduce production costs through various methods; however, bacterial concrete can be an effective response to sustainability.

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“…To achieve these roles, the capsules should be designed with sufficient strength to survive the concrete mixing and weak enough to ensure the cracks propagate through the capsules and release the healing agents. To date, glass [ 35 , 36 , 37 , 38 , 39 , 40 ], ceramic [ 41 ], expansive clays [ 34 , 42 ], natural fibers [ 43 , 44 ], perspex [ 38 ], paraffin [ 45 , 46 ], wax [ 47 ], silica [ 48 , 49 ], silica gel [ 50 ], diatomaceous earth [ 51 ], urea-formaldehyde [ 52 , 53 , 54 , 55 ] polymethyl methacrylate [ 54 , 55 ], low alkali cementitious materials [ 56 ], recycled brick aggregates [ 57 ], biocapsules (made of carbide slag fly ash and desulfurized gypsum) [ 58 ], sugar-coated expanded perlite [ 59 ] and porous concrete [ 60 ] have been investigated as capsule shell materials. In polymeric microcapsules, urea-formaldehyde, polyurethane, and melamine-formaldehyde are amongst the most commonly used polymeric encapsulation materials [ 61 ].…”

Section: Introductionmentioning

confidence: 99%

Feasibility and Compatibility of a Biomass Capsule System in Self-Healing Concrete

2021

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Cracking can facilitate deteriorations of concrete structures via various mechanisms by providing ingress pathways for moisture and aggressive chemicals. In contrast to conventional maintenance methods, self-healing is a promising strategy for achieving automatic crack repair without human intervention. However, in capsule-based self-healing concrete, the dilemma between capsules’ survivability and crack healing efficiency is still an unfathomed challenge. In this study, the feasibility of a novel property-switchable capsule system based on a sustainable biomass component, polylactic acid, is investigated. Capsules with different geometries and dimensions were studied focusing on the compatibility with concrete, including survivability during concrete mixing, influence on mortar and concrete properties, and property evolution of the capsules. The results indicate that the developed elliptical capsules can survive regular concrete mixing with a survival ratio of 95%. In concrete containing 5 vol.% of gravel-level capsules, the compressive strength was decreased by 13.5% after 90 days, while the tensile strength was increased by 4.8%. The incorporation of 2 vol.% of sand-level capsules did not impact the mortar strength. Degradation and switchable properties triggered by the alkaline matrix of cement were observed, revealing the potential of this novel biomass capsule system in achieving both high survivability and self-healing efficiency in concrete.

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Sugar-coated expanded perlite as a bacterial carrier for crack-healing concrete applications

Cited by 108 publications

References 23 publications

Review: Microbial induced mineralization of calcium carbonate for self-healing concrete

Review: Microbial induced mineralization of calcium carbonate for self-healing concrete

Bacterial Concrete as a Sustainable Building Material?

Feasibility and Compatibility of a Biomass Capsule System in Self-Healing Concrete

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