Evaluation of Self-Healing in Concrete by Means of Analytical Techniques

Konstantinos Aspiotis; Konstantinos Sotiriadis; Ivana Kumpová; Petra Mácová; Efstratios Badogiannis; Sotirios Tsivilis

doi:10.4028/www.scientific.net/SSP.309.38

Paper Titles

Development of Innovative Photoactive Admixtures for Concrete and Cement-Based Plaster Finishes, to Create Self-Cleaning Surfaces
p.14

High Performance Fine Grained Concrete with Content of Pumice
p.21

Influence of Washing of Crushed Aggregate on Mechanical Properties of High-Performance Concrete Containing Supplementary Cementitious Materials
p.26

Determination of Concrete Resistance to Corrosive Effects of Water with Aggressive CO₂ Using Model Mortars
p.31

Evaluation of Self-Healing in Concrete by Means of Analytical Techniques
p.38

Comparison of Resistance of Concrete for Sewage Pipes to Sulphate Corrosion Using Model Mortars
p.44

Determining the Freeze-Thaw Resistance of Concrete Incorporated in an Existing Structure
p.51

Integrated Anchorage of Thin Façade Panels Made of Textile Reinforced Concrete
p.57

Compressive Strength of Various Types of Concrete Exposed to Elevated Temperature
p.62

HomeSolid State PhenomenaSolid State Phenomena Vol. 309Evaluation of Self-Healing in Concrete by Means of...

Evaluation of Self-Healing in Concrete by Means of Analytical Techniques

Abstract:

In the present work, the self-healing process in concrete was evaluated using analytical techniques. For this purpose, two concrete mixes of different composition (one used as control) were prepared with a water-to-binder ratio of 0.45. The self-healing process was triggered by the introduction in the concrete mix of a commercial expansive admixture (calcium sulfo-aluminate), two dicarboxylic acids, and sodium carbonate salt. After 28 days curing in water, the specimens were artificially cracked (crack width ≤ 900 μm) and then again water-cured for further 60 days until self-healing occurred. The progress of self-healing was investigated with a stereomicroscope at 40, 50, and 60 days, after cracking, to identify the quality and the degree of the healing. The efficiency of the self-healing process was also evaluated using micro-Raman spectroscopy and X-ray micro-computed tomography. Significant reduction in the crack width was observed as a result of a calcite filling, generated during the self-healing process. In some cases (crack width < 400 μm), the crack was completely healed. The experimental methodology used provided new insights into the evolution of the self-healing phenomenon in concrete.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 309)

Pages:

38-43

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.309.38

Citation:

Cite this paper

Online since:

August 2020

Authors:

Konstantinos Aspiotis*, Konstantinos Sotiriadis, Ivana Kumpová, Petra Mácová, Efstratios Badogiannis, Sotirios Tsivilis

Keywords:

Chemical Additives, Concrete, Raman Spectroscopy, Self-Healing, X-Ray Tomography

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Y. Cao, C. Gehlen, U. Angst, et al., Critical chloride content in reinforced concrete — An updated review considering Chinese experience, Cem. Concr. Res. 117 (2019) 58-68.

DOI: 10.1016/j.cemconres.2018.11.020

Google Scholar

[2] M. Wu, B. Johannesson, M. Geiker, A review: Self-healing in cementitious materials and engineered cementitious composite as a self-healing material, Constr. Build. Mater. 28 (2012) 571-583.

DOI: 10.1016/j.conbuildmat.2011.08.086

Google Scholar

[3] S. Nagataki, H. Gomi, Expansive admixtures (mainly ettringite), Cem. Concr. Compos. 20 (1998) 163-170.

DOI: 10.1016/s0958-9465(97)00064-4

Google Scholar

[4] M. M. Collepardi, 6 - Water Reducers/Retarders, in: V. S. Ramachandran, Concrete Admixtures Handbook (Second Edition), William Andrew Publishing, Park Ridge, NJ, 1996, pp.286-409.

DOI: 10.1016/b978-081551373-5.50010-6

Google Scholar

[5] S. Monosi, G. Moriconi, M. Collepardi, Combined effect of lignosulfonate and carbonate on pure portland clinker compounds hydration. III. Hydration of tricalcium silicate alone and in the presence of tricalcium aluminate, Cem. Concr. Res. 12 (1982) 425-435.

DOI: 10.1016/0008-8846(82)90057-6

Google Scholar

[6] BSI. 2013. BS EN 206:2013+A1:2016, Concrete. Specification, performance, production and conformity (EN 206:2013+A1:2016), BSI Standards Publication.

Google Scholar

[7] BSI. 2012. BS EN 12390-1:2012, Testing hardened concrete. Shape, dimensions and other requirements for specimens and moulds (EN 12390-1:2012), BSI Standards Publication.

DOI: 10.3403/02128923u

Google Scholar

[8] K. Sisomphon, O. Copuroglu, E. A. B. Koenders, Self-healing of surface cracks in mortars with expansive additive and crystalline additive, Cem. Concr. Compos. 34 (2012) 566-574.

DOI: 10.1016/j.cemconcomp.2012.01.005

Google Scholar

[9] O. Chaudhari, J. J. Biernacki, S. Northrup, Effect of carboxylic and hydroxycarboxylic acids on cement hydration: experimental and molecular modeling study, J. Mater. Sci. 52 (2017) 13719-13735.

DOI: 10.1007/s10853-017-1464-0

Google Scholar

[10] T.-H. Ahn, T. Kishi, Crack Self-Healing Behavior of Cementitious Composites Incorporating Various Mineral Admixtures, J. Adv. Concr. Technol. 8 (2010) 171-186.

DOI: 10.3151/jact.8.171

Google Scholar

[11] S. Dedera, M. Burchard, U. A. Glasmacher, et al., On-line Raman spectroscopy of calcite and malachite during irradiation with swift heavy ions, Nucl. Instr. Meth. Phys. Res. B. 365 (2015) 564-568.

DOI: 10.1016/j.nimb.2015.09.079

Google Scholar