DOI: https://doi.org/10.15587/1729-4061.2018.145246

Studying the efect of nano­liquids on the operational properties of brick building structures

Tetiana Kropyvnytska, Roksolana Semeniv, Roman Kotiv, Andriy Kaminskyy, Vladyslav Hots

Abstract


The study reported here has established that the ceramic facing brick is characterized by capillary porosity that increases indicators of water absorption and capillary pull, as well as efflorescence formation at its surface. In order to protect the surface of such a brick and to provide it with the improved performance properties, we have used hydrophobizing substances. We have determined experimentally that the application of the PMPhS- and AP-based hydrophobizing agents leads to a decrease in porosity by 1.2-1.3 times, in water absorption ‒ by 1.2‒2.3 times, in water absorption at capillary pull ‒ by 1.1‒3.2 times. Research into frost resistance has found that for the ceramic brick, covered with PMPhS, it increases by 15 cycles, and when treating a brick surface with AP ‒ by 20 cycles, compared to the untreated brick (F50). By employing an electron microscopy, it was determined that the alternating freeze-thawing leads to that the brick's surface, treated with PMPhS and AP, demonstrates the formation of microcracks (in this case, water absorption increased by 42 and 28 %). By applying a method of mathematical planning of the experiment, it was found that the most effective hydrophobizing substance is the modifier that contains the nano-Al2O3 powder (a nano-liquid). It was determined that when treating the surface with a nano-liquid (the amount of nanо-Al2O3 is 0.8 %), its water absorption decreases to 1.2‒1.6 %, its water absorption indicator at capillary pull ‒ to 0.08‒0.12 kg/m2∙h0.5. Using a method of defectoscopy, applying the Karsten tube, it was found that water absorption for the brick whose surface was coated with a nano-liquid reduced from 0.15 to 0.002 ml/cm2, indicating a high level of hydrophobization. The electron microscopy method confirmed that the modification of the ceramic brick surface by the hydrophobizing nano-fluids makes it possible to compact the structure through the colmatation of pores and microcracks, which reduces the capillary pull of the brickwork. That also leads to the improved atmospheric and frost resistance of brick building structures.

Thus, there is a reason to argue about the possibility of improving the physical and technical indicators of the brick building structure by modifying the surface of the ceramic facing brick by a nano-fluid

Keywords


ceramic facing brick; porosity; water absorption; hydrophobizing substance; nano-liquid

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References


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GOST Style Citations


van Hees R. P. J., Brocken H. J. P. Damage development to treated brick masonry in a long-term salt crystallisation test // Construction and Building Materials. 2004. Vol. 18, Issue 5. P. 331–338. doi: https://doi.org/10.1016/j.conbuildmat.2004.02.006 

Krivenko P., Kovalchuk O., Pasko A. Utilization of Industrial Waste Water Treatment Residues in Alkali Activated Cement and Concretes // Key Engineering Materials. 2018. Vol. 761. P. 35–38. doi: https://doi.org/10.4028/www.scientific.net/kem.761.35 

Decorative Multi-Component Alkali Activated Cements for Restoration and Finishing Works / Krivenko P. V., Sanytsky M., Kropyvnytska T., Kotiv R. // Advanced Materials Research. 2014. Vol. 897. P. 45–48. doi: https://doi.org/10.4028/www.scientific.net/amr.897.45 

Influence of mineralogy and firing temperature on the porosity of bricks / Cultrone G., Sebastián E., Elert K., de la Torre M. J., Cazalla O., Rodriguez–Navarro C. // Journal of the European Ceramic Society. 2004. Vol. 24, Issue 3. P. 547–564. doi: https://doi.org/10.1016/s0955-2219(03)00249-8 

The effect of structural characteristics on electrical and physical properties of electrically conductive compositions based on mineral binders / Pluhin O., Plugin A., Plugin D., Borziak O., Dudin O. // MATEC Web of Conferences. 2017. Vol. 116. P. 01013. doi: https://doi.org/10.1051/matecconf/201711601013 

Effect of microfillers on the concrete structure formation / Borziak O., Vandolovskyi S., Chajka V., Perestiuk V., Romanenko O. // MATEC Web of Conferences. 2017. Vol. 116. P. 01001. doi: https://doi.org/10.1051/matecconf/201711601001 

Sanytsky M., Kropyvnytska T., Kotiv R. Modified Plasters for Restoration and Finishing Works // Advanced Materials Research. 2014. Vol. 923. P. 42–47. doi: https://doi.org/10.4028/www.scientific.net/amr.923.42 

Varshavets P., Svidersky V., Chernyak L. Peculiarities of the structure and hydrophysical properties of face brick // European Appl. Sciences. 2014. Vol. 1. P. 106–110.

Nilpairach S., Dubas S. T. Surface Modification of Bricks by Chitosan Coatings // Journal of Metals, Materials and Minerals. 2008. Vol. 18, Issue 1. P. 33–37.

Characterization of a hybrid nano-silica waterborne polyurethane coating for clay bricks / Pagliolico S. L., Ozzello E. D., Sassi G., Bongiovanni R. // Journal of Coatings Technology and Research. 2016. Vol. 13, Issue 2. P. 267–276. doi: https://doi.org/10.1007/s11998-015-9758-0 

Sharobim K. G., Mohammedin H. A. The effect of Nano-liquid on the properties of hardened concrete // HBRC Journal. 2013. Vol. 9, Issue 3. P. 210–215. doi: https://doi.org/10.1016/j.hbrcj.2013.08.002 

Influence of Microstructure on The Resistance to Salt Crystallisation Damage in Brick / Benavente D., Linares-Fernández L., Cultrone G., Sebastián E. // Materials and Structures. 2006. Vol. 39, Issue 1. P. 105–113. doi: https://doi.org/10.1617/s11527-005-9037-0 

Kropyvnytska T., Semeniv R., Ivashchyshyn H. Increase of brick masonry durability for external walls of buildings and structures // MATEC Web of Conferences. 2017. Vol. 116. P. 01007. doi: https://doi.org/10.1051/matecconf/201711601007 

Hyvliud M. M., Semeniv R. M., Kotsiy Ya. Y. Optymizatsiya skladu zakhysnoho pokryttia ta yoho vplyv na vodo- i morozostiikist keramichnoi tsehly // Visnyk NTU «KhPI». 2016. Issue 22 (1194). P. 44–48.

Increase of brick masonry operational properties of external walls / Kropyvnytska T. P., Sanytsky M. A., Semeniv R. M., Каminskyy A. T. // Scientific Bulletin of Civil Engineering. 2018. Vol. 91, Issue 1. P. 146–151. doi: https://doi.org/10.29295/2311-7257-2018-91-1-146-151 

Physico-chemical characterisation of bricks all through the manufacture process in relation to efflorescence salts / Andrés A., Díaz M. C., Coz A., Abellán M. J., Viguri J. R. // Journal of the European Ceramic Society. 2009. Vol. 29, Issue 10. P. 1869–1877. doi: https://doi.org/10.1016/j.jeurceramsoc.2008.11.015 

Novák V., Zach J. Study of Hydrophobic Modification of Ceramic Elements // Key Engineering Materials. 2018. Vol. 776. P. 121–126. doi: https://doi.org/10.4028/www.scientific.net/kem.776.121 

Pushkareva E. K., Suhanevich M. V., Bondar' E. V. Penetrating waterproofing coatings based on slag -containing cements, modified by natural zeolites // Eastern-European Journal of Enterprise Technologies. 2014. Vol. 3, Issue 6 (69). P. 57–62. doi: https://doi.org/10.15587/1729-4061.2014.24879 

Šadauskienė J., Ramanauskas J., Stankevičius V. Effect of Hydrophobic Materials on Water Impermeability and Drying of Finish Brick Masonry // Materials science. 2003. Vol. 9, Issue 1. P. 94–98.

Pidvyshchennia spozhyvnykh vlastyvostei stinovykh materialiv za rakhunok modyfikatsiyi yikh poverkhni z metoiu rozshyrennia zbutu / Ohorodnik I. V., Zakharchenko P. V., Varshavets P. H., Prysiazhna D. Yu., Oksamyt T. V. // Budivelni materialy ta vyroby. 2018. Issue 3-4. P. 72–80.

Damage to Polymer Coating on Facing Brick Surface in Operated Buildings / Ginchitskaia I., Yakovlev G., Kizinievich O., Polyanskikh I., Pervushin G., Taybakhtina P., Balobanova I. // Procedia Engineering. 2017. Vol. 195. P. 189–196. doi: https://doi.org/10.1016/j.proeng.2017.04.543 

Processes of Fatigue Destruction in Nanopolymer-Hydrophobised Ceramic Bricks / Fic S., Szewczak A., Barnat-Hunek D., Łagód G. // Materials. 2017. Vol. 10, Issue 1. P. 44. doi: https://doi.org/10.3390/ma10010044 

DSTU B V.2.7-126:2011. Budivelni materialy. Sumishi budivelni sukhi modyfikovani. Zahalni tekhnichni umovy. Kyiv, 2011. 39 p.

DSTU B V.2.7-171:2008 (EN 934-2:2008, NEQ). Budivelni materialy. Dobavky dlia betoniv i budivelnykh rozchyniv. Zahalni tekhnichni umovy. Kyiv, 2010. 93 p.

DSTU B V.2.7-42-97. Budivelni materialy. Metody vyznachennia vodopohlynennia, hustyny i morozostiikosti budivelnykh materialiv i vyrobiv. Kyiv, 1997. 22 p.







Copyright (c) 2018 Tetiana Kropyvnytska, Roksolana Semeniv, Roman Kotiv, Andriy Kaminskyy, Vladyslav Hots

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061