Improving the Efficiency of the Use of Composite Glass Plastic Fiber in Concretes

Results of the research in improving the properties of fiber concretes disperse reinforced with composite glass plastic fiber are presented. Improving the efficiency of glass plastic fiber is reached due to the modification of a concrete matrix with an expanding additive up to 15% and water soluble resin up to 2% of the cement mass. The efficiency of additives introduc- tion is assessed according to values of the extraction load of some fibers from the concrete matrix; these values are determined according to the specially developed methods. The interrelation between numerical values of loads of fiber extraction and strength characteristics of fiber concrete has been established. It is determined that the maximum load in the course of extraction of composite glass plastic fiber is increased by 75% when the cement matrix is modified with the expansion agent RD and water soluble resin DEG-1 that leads to improving the tensile strength, when the fiber concrete is bended, by 31.1%.

M.R. NURTDINOV, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.),
А.F. BURYANOV, Doctor of Sciences (Engineering),
V.G. SOLOV’EV, Candidate of Sciences (Engineering)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

1. Nurtdinov M., Solovyev V., Panchenko A. Influence of composite fibers on the properties of heavy concrete. MATEC Web of Conferences. 2016. November. Vol. 86, Article number 04026. Doi: https://doi.org/10.1051/ matecconf/20168604026. 
2. Khoteev E.A. About the prospects of using fiberglass reinforcing elements in Russia on the basis of the European experience. Transportnoe stroitel’stvo. 2015. No. 1, pp. 10–13. (In Russian). 
3. Rabinovich F.N. Kompozity na osnove dispersno-armirovannykh betonov [Composites based on fiber reinforced concrete]. Moscow: ASV. 2011. 642 p. 
4. Solov’ev V.G., Bur’yanov A.F., Elsuf’eva M.S. Features of production of steel fiber concrete products and structures. Stroitel’nye materialy [Construction Materials]. 2014. No. 3, pp. 18–21. (In Russian). 
5. Solov’ev V.G., Bur’yanov A.F., Fisher Kh.-B. Features of the formation of the structure of steel fiber concrete during heat treatment. Stroitel’nye Materialy [Construction Materials]. 2015. No. 9, pp. 43–46. (In Russian). 
6. Elsuf’eva M.S., Solov’ev V.G., Bur’yanov A.F. Application of expanding additives in steel fiber concrete. Stroitel’nye Materialy [Construction Materials]. 2014. No. 8, pp. 60–63. (In Russian). 
7. Elsuf’eva M.S., Solov’yev V.G., Buryanov A.F., Nurtdinov M.R., Kakuasha V.A. Evaluation of early changes in the properties of steel fiber reinforced concrete with expanding additives. Stroitel’nye Materialy [Construction Materials]. 2015. No. 7, pp. 21–23. (In Russian). 
8. Nurtdinov M.R., Bur’yanov A.F. Influence of water-soluble DEG-1 epoxy together with super- and hyperplasticizer on properties of fine-grained concrete. The collection of abstracts of reports of the international scientific and technical conference “High strength cement concretes: technologies, structures, economics (VBB-2016)”. Kazan: KazGASU. 2016, pp. 47. (In Russian).