Smart polymer systems as concrete self-healing agents

Costa, Vítor Corrêa da; Aboelkheir, Mostafa Galal; Pal, Kaushik; Filho, Romildo Dias Tolêdo; Gomes, Fernando José Borges

doi:10.1016/b978-0-12-820702-4.00016-7

Cited by 7 publications

(4 citation statements)

References 65 publications

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“…Polymers with epoxy groups are the most widely used polymers. 214 The polymer− cement interactions are usually elucidated by atomistic simulations, providing insights into structural, free energetic, dynamical, and mechanical properties. The topic of these interactions has been reviewed recently.…”

Section: Polymersmentioning

confidence: 99%

“…In addition, polymers can be used in self-healing mechanisms for their adhesive properties. Polymers with epoxy groups are the most widely used polymers . The polymer–cement interactions are usually elucidated by atomistic simulations, providing insights into structural, free energetic, dynamical, and mechanical properties.…”

Section: Autonomous Healing Cementitious Materialsmentioning

confidence: 99%

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Toward Self-Healing Concrete Infrastructure: Review of Experiments and Simulations across Scales

et al. 2023

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Cement and concrete are vital materials used to construct durable habitats and infrastructure that withstand natural and human-caused disasters. Still, concrete cracking imposes enormous repair costs on societies, and excessive cement consumption for repairs contributes to climate change. Therefore, the need for more durable cementitious materials, such as those with self-healing capabilities, has become more urgent. In this review, we present the functioning mechanisms of five different strategies for implementing self-healing capability into cement based materials: (1) autogenous self-healing from ordinary portland cement and supplementary cementitious materials and geopolymers in which defects and cracks are repaired through intrinsic carbonation and crystallization; (2) autonomous self-healing by (a) biomineralization wherein bacteria within the cement produce carbonates, silicates, or phosphates to heal damage, (b) polymer–cement composites in which autonomous self-healing occurs both within the polymer and at the polymer–cement interface, and (c) fibers that inhibit crack propagation, thus allowing autogenous healing mechanisms to be more effective. In all cases, we discuss the self-healing agent and synthesize the state of knowledge on the self-healing mechanism(s). In this review article, the state of computational modeling across nano- to macroscales developed based on experimental data is presented for each self-healing approach. We conclude the review by noting that, although autogenous reactions help repair small cracks, the most fruitful opportunities lay within design strategies for additional components that can migrate into cracks and initiate chemistries that retard crack propagation and generate repair of the cement matrix.

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Section: Polymersmentioning

confidence: 99%

Section: Autonomous Healing Cementitious Materialsmentioning

confidence: 99%

Toward Self-Healing Concrete Infrastructure: Review of Experiments and Simulations across Scales

et al. 2023

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“…The effect of polymeric materials on crack healing was first reported by Malinskii in 1973 [16]. This approach was attracted considerable scientific attention in the last two decades [17][18][19][20]. Concrete self-healing methods are divided into two main categories, these are autogenous and autonomous methods [21].…”

Section: Introductionmentioning

confidence: 99%

Polymers As Concrete Healing Materials

Gorur

2023

J. Compos. Biodegradable Polym.

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Concrete is commonly used as a supporting material in the construction industry. Although it can withstand heavy loads, it is very brittle and sensitive to crack formation. Earthquakes and other environmental factors may result in the formation of cracks in the concrete structure. Penetration of chloride and atmospheric water with dissolved oxygen and carbon dioxide gasses through these cracks leads to corrosion of rebar (reinforcing steel bars). This paper is a short review of polymeric structures as concrete healing materials.

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“…Renewable resources constitute an extremely rich and varied set of molecules and macromolecules produced by natural biological activities. In the specific context of the production of bio-derived polymers from renewable resources, the most widely used include vegetable oils, polysaccharides (mainly cellulose and starch), and proteins [ 6 , 7 , 8 ]. Due to their polar and reactive macromolecular structure, proteins have attracted much attention as possible sources of new polymeric materials [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Tenebrio molitor Larvae-Based Magnetic Polyurea Employed as Crude Oil Spill Removal Tool

Aboelkheir

Souza²,

Meiorin

et al. 2022

Materials

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Renewable resources constitute an extremely rich and varied set of molecules and polymers produced by natural biological activities. Within the applications of these polymers, a very important application is the use of these materials as a sorber for oils or oil spills. The advantage of these nanocomposites is the fact that they integrate different component materials and their properties into a single component material. They have several applications, ranging from environmental remediation to the development of advanced medical applications. This work proposed using magnetic polyurea composites based on an animal substrate from Tenebrio molitor larvae to perform oil spill clean-up operations under a magnetic field in the presence of 1% and 3% of magnetite to be tested as magnetic crude oil sorber. The obtained materials were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning Differential Calorimetry (DSC), and Low-Field Nuclear Magnetic Resonance (LF-NMR 1H). The sorber material is simple to prepare and inexpensive. The use of magnetite as a magnetic charge allowed for the efficient removal of oil from water with about 28 g of oil per gram of sorber. These results are very promising and encouraging for future environmental recovery studies involving magnetite and sustainable polymers.

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Smart polymer systems as concrete self-healing agents

Cited by 7 publications

References 65 publications

Toward Self-Healing Concrete Infrastructure: Review of Experiments and Simulations across Scales

Toward Self-Healing Concrete Infrastructure: Review of Experiments and Simulations across Scales

Polymers As Concrete Healing Materials

Tenebrio molitor Larvae-Based Magnetic Polyurea Employed as Crude Oil Spill Removal Tool

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