Self-healing cementitious materials by the combination of microfibres and superabsorbent polymers

@article{Snoeck2014SelfhealingCM,
  title={Self-healing cementitious materials by the combination of microfibres and superabsorbent polymers},
  author={Didier Snoeck and Kim Van Tittelboom and Stijn Steuperaert and Peter Dubruel and Nele De Belie},
  journal={Journal of Intelligent Material Systems and Structures},
  year={2014},
  volume={25},
  pages={13 - 24}
}
Concrete cracks due to its low tensile strength. The presence of cracks endangers the durability as they generate a pathway for harmful particles dissolved in fluids and gases. Without a proper treatment, maintenance costs will increase. Self-healing can prevail in small cracks due to precipitation of calcium carbonate and further hydration. Therefore, the use of microfibres is proposed to control the crack width and thus to promote the self-healing efficiency. In the current research, crack… 
Evaluation of the Self-Healing Ability of Mortar Mixtures Containing Superabsorbent Polymers and Nanosilica
TLDR
The smaller influence on the mechanical properties and the good healing characteristics in mixtures containing both nanosilica and SAPs are promising as a future material for use in building applications.
Effective Crack Control of Concrete by Self-Healing of Cementitious Composites Using Synthetic Fiber
TLDR
It was confirmed that the effective restoration of watertightness through the production of the majority of self-healing products was achieved by CaCO3 and the use of synthetic fibers with polarity, along with the effect of inducing a multiple number of hairline cracks.
Repeated Autogenous Healing in Strain-Hardening Cementitious Composites by Using Superabsorbent Polymers
AbstractAutogenous healing is an already-present feature in strain-hardening cementitious materials, but it is an inferior mechanism because it can only heal small cracks in the presence of water. A
Superabsorbent polymers to promote and stimulate autogenous healing in cementitious materials
Concrete cracking is in some cases inevitable. Autogenous healing may prove to be useful to limit repair works caused by concrete cracking. Further cement hydration, pozzolanic activity by fly ash
Microfibres and hydrogels to promote autogenous healing in cementitious materials
Cementitious materials are sensitive to crack formation and it would be beneficial if the material could stop the crack propagation, repair the damage and reach again the original liquid-tightness
Autonomous Repair in Cementitous Material by Combination of Superabsorbent Polymers and Polypropylene Fibres: A Step Towards Sustainable Infrastructure
Manual maintenance and repair of cracks in concrete structures are often unsustainable because of associated labor, capital and environmental damage. Introduction of microfibers and superabsorbent
Bacteria-based self-healing concrete to increase liquid tightness of cracks
Abstract The innovative technology of self-healing concrete allows the material to repair the open micro-cracks that can endanger the durability of the structure, due to ingress of aggressive gasses
The effectiveness of Super Absorbent polymers and superplasticizer in self-healing of cementitious materials
Abstract Concrete is susceptible to cracking typically under tensile stresses which reduces the mechanical resistance and endangers the overall durability of the structure. In this study, Super
Self-sealing of cracks in concrete using superabsorbent polymers
Cracks in concrete can self-heal when exposed to prolonged wetting, but this is limited to narrow cracks. In practice, cracks > 0.2 mm cause leakage and impair performance of structures. The
Effect of sample age on the self-healing properties of cementitious mateials with superabsorbent polymers
To obtain sustainable construction materials, occurring cracks in concrete should be repaired. However, as this often manual repair is time-consuming and expensive, self-healing may provide a
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 21 REFERENCES
Self-healing efficiency of cementitious materials containing tubular capsules filled with healing agent
Abstract It has been estimated that, in Europe, 50% of the annual construction budget is spent on rehabilitation and repair of the existing structures [1] . Therefore, autonomous crack healing of
Self-Healing Capability of Fibre Reinforced Cementitious Composites
In order to investigate the self-healing capability of fibre reinforced cementitious composites (FRCC), mechanical properties and surface morphology of crack in FRCC were studied. Three types of FRCC
Water Permeability and Autogenous Healing of Cracks in Concrete
The well-known practical phenomenon of autogenous healing in cracks plays a significant role in relation to the functional reliability of structures subjected to water-pressure loads. Because of the
Experimental characterization of the self-healing of cracks in an ultra high performance cementitious material: Mechanical tests and acoustic emission analysis
Self-healing of cracks in an ultra high performance concrete, considered as a model material, is investigated in this paper. An experimental program is carried out in order to quantify the
Superabsorbing additions in concrete : applications, modelling and comparison of different internal water sources
The work is structured into three parts: the investigation of water absorbent lightweight aggregates and superabsorbent polymers, the comparison and the determination of determinant material
Effect of Cracking on Water and Chloride Permeability of Concrete
The goal of this research was to study the relationship between cracking and concrete permeability and to support accounting for permeability and cracking resistance to other factors besides
Water-entrained cement-based materials: II. Experimental observations
Abstract This paper concerns a new concept for the prevention of self-desiccation in hardening cement-based materials. The concept is based on using fine, superabsorbent polymer (hydrogel, SAP)
Water-entrained cement-based materials
The invention relates to a method for reducing autogenous shrinkage in a material based on a hydraulic mineral binder, e.g. cement, by preparing a mixture comprising the binder, water and a
The thermal decomposition of Ca(OH)2 polymorphs
The thermal decomposition of different polymorphs of Ca(OH)2 with varying degrees of crystallinity and surface area was investigated. The nitrogen surface area values ranged from 3.7 to 31.1 m/g. The
Changes in portlandite morphology with solvent composition: Atomistic simulations and experiment
Experimental work has been done to determine changes in the particle shape of portlandite grown in the presence of different ions. To quantify the experimentally observed changes in morphology a new
...
1
2
3
...