Quantification of chemical and biological calcium carbonate precipitation: Performance of self-healing in reinforced mortar containing chemical admixtures

Stuckrath, Claudia; Serpell, Ricardo; Valenzuela, Loreto M.; López, Mauricio

doi:10.1016/j.cemconcomp.2014.02.005

Cited by 89 publications

(27 citation statements)

References 20 publications

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“…For instance, capsules storing various adhesive agents are being manufactured in laboratory for self-healing of cracks in cementitious materials [11][12][13]. Mineral admixtures are used to develop self-healing concrete as well [14][15][16][17][18][19]. Bacteria are also applied as selfhealing agent in concrete structures [17,[20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Mineral admixtures are used to develop self-healing concrete as well [14][15][16][17][18][19]. Bacteria are also applied as selfhealing agent in concrete structures [17,[20][21][22][23][24]. Even without these aforementioned healing agents, cementitious materials have the ability of self-healing, that is, autogenous selfhealing [7,[25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Studies of the Effects of Water Capsules on Self-Healing Efficiency and Mechanical Properties in Cementitious Materials

Huang

2016

Advances in Materials Science and Engineering

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In this research, self-healing due to further hydration of unhydrated cement particles is taken as an example for investigating the effects of capsules on the self-healing efficiency and mechanical properties of cementitious materials. The efficiency of supply of water by using capsules as a function of capsule dosages and sizes was determined numerically. By knowing the amount of water supplied via capsules, the efficiency of self-healing due to further hydration of unhydrated cement was quantified. In addition, the impact of capsules on mechanical properties was investigated numerically. The amount of released water increases with the dosage of capsules at different slops as the size of capsules varies. Concerning the best efficiency of self-healing, the optimizing size of capsules is 6.5 mm for capsule dosages of 3%, 5%, and 7%, respectively. Both elastic modulus and tensile strength of cementitious materials decrease with the increase of capsule. The decreasing tendency of tensile strength is larger than that of elastic modulus. However, it was found that the increase of positive effect (the capacity of inducing self-healing) of capsules is larger than that of negative effects (decreasing mechanical properties) when the dosage of capsules increases.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Studies of the Effects of Water Capsules on Self-Healing Efficiency and Mechanical Properties in Cementitious Materials

Huang

2016

Advances in Materials Science and Engineering

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“…In addition, different metabolic pathways are employed by the bacteria for the precipitation of CaCO3 depending on the species and the environmental conditions . The biogenic self-healing agents, which are frequently encountered in the literature, follow three different metabolic routes; i.e., the enzymatic hydrolysis of urea (Ramachandran et al, 2001;De Muynck et al, 2008;Wang et al, 2014), the oxidation of organic carbon (Jonkers et al, 2010;Wiktor and Jonkers, 2011;Jonkers and Mors, 2012;Stuckrath et al, 2014;Xu and Yao, 2014;Sierra Beltran et al, 2015;Paine et al, 2016;Tziviloglou et al, 2016), and the anoxic oxidation of organic carbon (Ersan, 2016). This paper discusses the oxidation of organic carbon system.…”

Section: Introductionmentioning

confidence: 99%

Selection of Nutrient Used in Biogenic Healing Agent for Cementitious Materials

et al. 2017

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Biogenic self-healing cementitious materials target on the closure of micro-cracks with precipitated inorganic minerals originating from bacterial metabolic activity. Dormant bacterial spores and organic mineral compounds often constitute a biogenic healing agent. The current paper focuses on the investigation of the most appropriate organic carbon source to be used as component of a biogenic healing agent. It is of great importance to use an appropriate organic source, since it will first ensure an optimal bacterial performance in terms of metabolic activity, while it should, second, affect the least the properties of the cementitious matrix. The selection is made among three different organic compounds, namely calcium lactate (CaL), calcium acetate (CaA), and sodium gluconate (NaG). The methodology that was used for the research was based on continuous and non-continuous oxygen consumption measurements of washed bacterial cultures and on compressive strength tests on mortar cubes. The oxygen consumption investigation revealed a preference for CaL and CaA, but an indifferent behavior for NaG. The compressive strength on mortar cubes with different amounts of either CaL or CaA (up to 2.24% per cement weight) was not or it was positively affected when the compounds were dissolved in the mixing water. In fact, for CaL, the increase in compressive strength reached 8%, while for CaA, the maximum strength increase was 13.4%.

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“…In this way, a 3D representation of the healed crack, the formed products or the healing agent is made. Images may also be taken from a distance with an SLR camera, which can also be employed on site to study the fracture and healing behavior . Image analysis afterward may determine the crack closure.…”

Section: Healing Efficiencymentioning

confidence: 99%

Validation of Self‐Healing Properties of Construction Materials through Nondestructive and Minimal Invasive Testing

Snoeck

Malm

Cnudde

et al. 2018

Adv Materials Inter

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When studying the self‐healing properties of construction materials, a plethora of destructive and nondestructive testing (NDT) techniques can be used. In this review, the applicability of different nondestructive test methods is discussed in detail. The methods can be categorized whether they are used to study the encapsulation and/or protection mechanism of the healing agent, the sequestered healing agent itself, the distribution of healing agents, the trigger mechanism for healing, the healing efficiency, or healing performance. Based on this categorization, nondestructive techniques found in literature are discussed. In this way, a robust understanding of the different techniques can be used for future research on self‐healing construction materials.

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Quantification of chemical and biological calcium carbonate precipitation: Performance of self-healing in reinforced mortar containing chemical admixtures

Cited by 89 publications

References 20 publications

Numerical Studies of the Effects of Water Capsules on Self-Healing Efficiency and Mechanical Properties in Cementitious Materials

Numerical Studies of the Effects of Water Capsules on Self-Healing Efficiency and Mechanical Properties in Cementitious Materials

Selection of Nutrient Used in Biogenic Healing Agent for Cementitious Materials

Validation of Self‐Healing Properties of Construction Materials through Nondestructive and Minimal Invasive Testing

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