STUDY OF THE INFLUENCE OF POLYMER ADDITIVES ON THE PROPERTIES OF DRIED DRY BUILDING MIXTURES
DOI:
https://doi.org/10.31649/2311-1429-2022-2-12-18Keywords:
dry construction mixtures, additive, mineral components of the mixture, polypropylene fiber, redispersing powders, cellulose ether, modification, porous structure, mixtures for floors, strength, spreading, average density, surfactants, polyvinyl acetate additive (PVA), liquid glass (silicate glue), plasticizer, activationAbstract
The theoretical prerequisites for obtaining porous mortars modified with polymer additives based on dry construction mixtures and experimental studies on determining the influence of these additives on the parameters of mixture preparation and on the rheological and physico-mechanical properties of porous mortar are presented.
The article presents the results of theoretical-experimental studies of the complex influence of polymer additives on the properties of dry construction mixtures made with an activated mineral component - Portland cement and mineral fillers and microfillers based on local raw materials. The main results of experimental studies of porous compositions of dry mixtures for floors with the addition of polymer additives are given.
It was established that the modification of dry building mixtures based on Portland cement and activated mineral fillers with polymer additives allows to increase by 25-40% the physical and mechanical properties of hardened solutions for floors and to obtain compositions with a compressive strength of up to 16.3 MPa, as well as to significantly improve the rheology of the mortar mixtures and reduce shrinkage phenomena when introducing corrosive additives without increasing the water consumption of the mixture and overusing the binder.
References
A. V. Bondar, "The influence of mineral microfillers and polymer additives on the properties of dry construction mixtures", at the International scientific and technical conference "Innovative technologies in construction", Vinnytsia: VNTU, 2018, p. 215-218.
A. V. Bondar, V. P. Kovalskyi, V. P. Burlakov, and E. R. Matviychuk, "Utilization of industrial waste by manufacturing dry construction mixtures based on it", Ecological Sciences: Scientific and Practical Journal, no. 3 (22), p. 21-24, 2018.
A. V. Bondar, "The influence of carbonate additives on the properties of porous dry construction mixtures", Scientific and technical journal "New technologies in construction", Issue No. 35, p. 63-67, 2018.
A. V. Bondar, "Modification of mineral dry building mixtures with polymer additives", at the XLVII Scientific and Technical Conference of the Faculty of Construction, Heat and Power Engineering and Gas Supply (2018). [Electronic resource]. Available: https://conferences.vntu.edu.ua/index.php/all-fbtegp/all-fbtegp-2018/paper/view/5252. Application date: February 02, 2019.
R. F. Runova and Yu. L. Nosovsky, Technology of modified building mortars. Kyiv, Ukraine: KNUBA, 2007.
DSTU B V.2.7-126:2011. Dry modified construction mixes. General technical conditions. Valid from 2011-06-01. View. officer K.: Ministry of Regional Development and Construction of Ukraine, 2011. 42 p.
G. B. Hirshtel and S. V. Glazkova, "Multifunctional additive for cement mortars and dry construction mixtures", Building of Ukraine, No. 4, p. 19-22, 2009.
E. P. Kearsley, and H. F. Mostert, "The effect of fiber reinforcing on the properties of foamed concrete", on Role of Concrete in Sustainable Development: proceeding of International congress, Dundee, Scotland, 2003, P. 557-566.
A. V. Bondar, "Effective dry construction mixtures for floor elements of civil buildings", diss. Ph.D. Sci.; Vinnytsia National Technical University, Vinnytsia, 2019.
E. O. Sporyagin and K. E. Varlan, Theoretical foundations and production technology of polymer composite materials: training. manual D.: Publishing House of DNU, 2012.
A. V. Bondar, "The influence of mineral microfillers and polymer additives on the properties of dry construction mixtures", at the International scientific and technical conference "Innovative technologies in construction", Vinnytsia: VNTU, 2018, p. 215-218.
Downloads
-
PDF (Українська)
Downloads: 0
