NEW MATERIAL USING CEMENT-BASED MATRIX WITH SELF-REPAIR PROPERTIES BASED ON REACTIVE GRAINS WITH PROTECTIVE COATING

Authors

  • Miron ZAPCIU Politehnica University of Bucharest, INCERTRANS SA, Academy of Romanian Scientists, Spl. Independentei 313, sector 6, ZipCode 060042, Bucharest, Romania. *Corresponding author: miron.zapciu@upb.ro
  • Constantin VOINIȚCHI Technical University of Civil Engineering, Blvd Lacul Tei 124, ZipCode 020396 Bucharest.
  • Nicoleta IONESCU INCERTRANS SA, Transport Research Institute, Calea Grivitei 391-393, ZipCode 010719, Bucharest, Romania.
  • Marius OLTEANU SW Umwelttechnik Romania, Str. Zavoiului, Nr. 1, com. Vanatorii Mici, jud. Giurgiu ZipCode 087253, Romania

DOI:

https://doi.org/10.24193/subbchem.2021.4.18

Keywords:

reactive grains, protective coating, self-repairing, new material.

Abstract

This research relates to cement-based matrix materials with self-repairing properties, based on reactive grains (Portland clinker) having the dimensions 90…160 μm and using a protective coating layer with a thickness of 4-7 μm. The material involves the use in mortars or concretes of a smart additive of a clinker reactive material covered with an impermeable polymeric coating that breaks when a crack appears in the material and allows the reaction between water and cement stone components and, consequently, the formation of a crack plugging product consisting in calcium silicate hydrates gels (CSH), superior to that of calcium carbonate precipitation. The intelligent addition is obtained by mixing the reactive material with the solution of a polymer, or with its melt (C8H8)n. The efficiency of coverage exceeds 80% in most of cases, some of them approaching even 90%. No significant effect of the ratio reactive material/polymer seems to be observed. The degree of healing of the crack is defined in the paper. The method of highlighting the self-repairing effect is based on the amount of electricity passed through the sample. The new material has practically unchanged mechanical properties, a higher hydration capacity and a longer service life-cycle.

References

* * * WIPO Patent number WO 2017/116354, 2017, pp. 8-10.

V. Li; E.H. Yang; Patent number 20080261027, USA, 2008, pp. 5-9.

Ed. G. Nawy; Concrete construction engineering handbook. 2nd Edition, Boca Raton: Taylor & Francis Group, 2008, pp. 15-19.

D. Snoeck; N. De Belie; J. Mat. Civil Eng. 04015086, 2015, pp.1-11.

D. Snoeck; N. De Belie; J. Mat. Civil Eng., 2015, 28(1), 50-86.

D. Snoeck; J. Dewanckel; V. Cnudde; N. De Belie; Cement and Concrete Composites, 2016, 65, 83-93.

M. Şahmaran; G. Yildirim; T.K. Erdem; Cement and Concrete Composites, 35(1), 2013, pp.89-101.

P. Termkhajornkit; T. Nawa; Y. Yamashiro; T. Saito; Cement and Concrete Composites, 31(3), 2009, pp.195-203.

K. Van Tittelboom; N. De Belie; Materials, 6(6), 2013, pp. 2182-2217.

K. Van Tittelboom; E. Gruyaert; H. Rahier; N.De Belie; Construction and Building Materials, 37, 2012, pp.349-359.

A. Witze; Nature News, 2017, pp. 15-25.

* * * OSIM Patent application no.A/00022, 2020, Bulletin of OSIM, RO-BOPI no.7/2020, pp. 31.

E.H. Yang; V.C. Li; Cement and Concrete Research, 42(8), 2012, pp.1066-1071.

E.H. Yang; Y. Yang; V.C. Li; ACI Materials Journal, 104(6), 2007, pp. 303-311.

G. Yildirim; M. Sahmaran; H.U. Ahmed; Journal of Materials in Civil Engineering, 27(6), 2014, pp. 87-89.

G. Yildirim; M. Şahmaran; H.Ahmed; Journal of Materials in Civil Engineering, 27(6), 2014.

Z. Zhang; S. Qian; H. Ma; Construction and Building Materials, 52, 2014, pp.17-23.

C. Voinițchi; C. Baeră; M. Zapciu; C. Matei; H. Szilágyi; N. Ionescu; F. Tudorie; Annals of the Academy of Romanian Scientists, Series on Engineering Sciences, ISSN 2066-8570, Vol.12, No.1, 2020, pp. 89-102.

A. Cuibus; M. Gorea; N. Har; Z. Kiss; Studia UBB Chemia, LIX, 4, 2014, pp. 75-86.

* * * ASTM C1202-19 Standard Test Method, 2019.

* * * Sectoral project 6PS/13.09.2019, financed by Ministry of Education and Research: Phase III, 2020, Chapter: Elaboration of the technology implementation manual, pp. 11-15.

Downloads

Published

2021-12-30

How to Cite

ZAPCIU, M., VOINIȚCHI, C., IONESCU, N., & OLTEANU, M. (2021). NEW MATERIAL USING CEMENT-BASED MATRIX WITH SELF-REPAIR PROPERTIES BASED ON REACTIVE GRAINS WITH PROTECTIVE COATING. Studia Universitatis Babeș-Bolyai Chemia, 66(4), 253–265. https://doi.org/10.24193/subbchem.2021.4.18

Issue

Section

Articles

Similar Articles

1 2 3 4 5 6 7 8 9 10 > >> 

You may also start an advanced similarity search for this article.