Cross-linkable polyethers as healing/sealing agents for self-healing of cementitious materials

Araújo, Maria Adelaide Pereira Gomes de; Vlierberghe, Sandra Van; Feiteira, João Luis Garcia; Graulus, Geert-Jan; Tittelboom, Kim Van; Martins, José; Dubruel, Peter

doi:10.1016/j.matdes.2016.03.005

Cited by 48 publications

(27 citation statements)

References 24 publications

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“…Its area increased in the order of 0.1 wt % BDMA + 0.1 wt % DBTDL system < 0.2 wt % BDMA system < 0.2 wt % DBTDL system < catalyst‐free system. Araújo et al . reported that the decrease in the peak area of the characteristic isocyanate peak indicated the complete consumption of hexamethylene‐1,6‐diisocyanate.…”

Section: Resultsmentioning

confidence: 99%

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

Zhang

et al. 2018

J of Applied Polymer Sci

113

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Polyurethane/water glass (PU/WG) grouting materials were prepared in presence of different proportions of catalyst. The effects of catalyst on the mechanical properties, thermal properties, and chemical cross‐sectional morphologies of the grouting materials were also investigated. Catalyst addition can significantly increase the chemical reaction rate, reduce the gel time and curing time, and improve the thermal stability of PU/WG grouting materials. It was found that the grouting material containing 0.1 wt % BDMA + 0.1 wt % DBTDL demonstrated high fluidity, short curing time, and high early‐stage and late‐stage (up to 66.1 MPa) compression strengths. However, when the content of the added catalyst was equal to 0.5 wt %, fine cracks were formed in the material structure accompanied by the detachment of spherical particles from the PU matrix, which significantly deteriorated its mechanical properties. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46460.

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Section: Resultsmentioning

confidence: 99%

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

Zhang

et al. 2018

J of Applied Polymer Sci

113

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“…Beside the abovementioned adhesive agents, the feasibility of many other different types of adhesive agents such as acrylate-endcapped, urethane-based precursor [14] and commercial available healing agent MEYCO MP355 1K have also explored [15].…”

Section: Polymeric Adhesive Agent Based Self-healingmentioning

confidence: 99%

A Review: Novel Routes towards the Realization of Self-Healing Function in Cementitious Materials

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Cementitious materials are the fundamental element in the field of civil construction. While due to its brittle nature, cracking of cementitious material at multi-scales could pose a threaten to the safety and durability of concrete structure. To solve this congenital problem, bio-mimic self-healing in cementitious materials was proposed and gradually demonstrated its great potential. In this review, two big categories of self-healing, autonomous and autogenous self-heaing, with its corresponding up-to-date healing stratergies were introduced. The merits and limits of different healing strategies were concluded. It is believed that this review could shed light to the realization of practical application self-healing concept in cementitious materials.

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“…Over the years, several conventional methods have been used to manually repair cracks via resin infusion, surface coating etc. but have been ineffective especially when cracks were invisible or difficult to reach . As a result, smart self‐responsive cementitious materials with stimulate autogenous self‐healing/sealing properties appear promising …”

Section: Introductionmentioning

confidence: 99%

“…but have been ineffective especially when cracks were invisible or difficult to reach. 1,2 As a result, smart self-responsive cementitious materials with stimulate autogenous self-healing/sealing properties appear promising. 1 One of the key parameters in self-healing/sealing of cementitious structures is controlling the entrained water therein.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 As a result, smart self-responsive cementitious materials with stimulate autogenous self-healing/sealing properties appear promising. 1 One of the key parameters in self-healing/sealing of cementitious structures is controlling the entrained water therein. 9 To achieve this goal, the incorporation of superabsorbent polymers, SAPs, as admixtures in cement, has gained great scientific attention, as SAPs play a significant role in increasing the water availability and promoting the hydration reaction during the entire service life of the cementitious structure starting from the mixing procedure of the cement paste.…”

Section: Introductionmentioning

confidence: 99%

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Effect of submicron admixtures on mechanical and self‐healing properties of cement‐based composites

Kanellopoulou

Karaxi

Karatza

et al. 2019

Fatigue Fract Eng Mat Struct

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This study presents the development of novel submicron super absorbent polymers (SAPs) used as admixtures in cement‐based matrices with significant advantages over conventional products. The produced SAPs were characterized in respect of their morphology and composition, while their water absorption capacity was determined in different electrolyte solutions. The hybrid core‐shell spherical structure of the fabricated materials offered significant compatibility enhancement with cement while the workability of the mixture was maintained. The assessment of the cement‐based composites including SAPs revealed that their flexural strength increased by 78%. Self‐healing/sealing behavior was assessed by monitoring the crack sealing via SEM, elemental analysis of the healing products, and determination of the water absorbance coefficient for different times of treatment. The cement/SAPs composites with a concentration of SAPs 2% by weight of cement exhibited self‐healing/sealing responsive capability when an artificial crack was induced. According to the SEM characterization, the crack demonstrated complete healing for the better part of its length after 28 days of treatment.

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Cross-linkable polyethers as healing/sealing agents for self-healing of cementitious materials

Cited by 48 publications

References 24 publications

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

A Review: Novel Routes towards the Realization of Self-Healing Function in Cementitious Materials

Effect of submicron admixtures on mechanical and self‐healing properties of cement‐based composites

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