Construction Material Engineering

TECHNICAL-ECONOMIC EFFICIENCY OF THE USE OF NANOMODIFIED FILLER FOR ASPHALT-CONCRETE

Vestnik MGSU 4/2018 Volume 13
  • Inozemtsev Sergey Sergeevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Junior Researcher, “Nanomaterials and Nanotechnologies” Research and Education Center, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Korolev Evgeniy Valer’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Director of the “Nanomaterials and Nanotechnologies” Research and Education Center, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 536-443

Subject: technical and economic efficiency of the use of nanomodified porous mineral powder in the composition of asphalt-concrete mixture. The system of quality indicators of crushed stone-mastic asphalt-concretes obtained using nanomodified porous filler is presented. A general criterion for the quality of asphaltic concrete and a method for assessing the technical and economic efficiency of the use of nanomodified filler to control the properties of asphalt-concrete have been developed. Using the methods of system analysis, decomposition of the asphalt-concrete quality system was carried out and the basic quality indicators and dependencies for calculation of particular quality criteria were identified. The efficiency of using a filler based on a porous mineral material whose surface is modified with an additive based on iron hydroxide sol and silicic acid is shown. Research objectives: substantiation of effectiveness of the use of nanomodified porous mineral powder in the composition of asphalt-concrete mixture, taking into account the efficiency and cost criteria. Materials and methods: oil road bitumen BND 60/90, gabbro-diabase crushed stone of 5-20 mm fraction, granite crushing and screening products, stabilizing additive Viatop-66 and nanomodified diatomite were used. Samples of crushed stone-mastic asphalt-concrete were tested in accordance with the standard methods, and resistance to varying weather and climatic conditions and also rutting resistance were studied. Results: the proposed criteria allow one to estimate the effectiveness of the use of nanomodified mineral powder in asphalt-concrete, taking into account both the technical characteristics of the asphalt-concrete, obtained by using the powder, and the economic costs necessary to achieve improvement in quality indices. Concrete SMA-20, in which 100 % of the traditional filler is replaced by a powder based on diatomite, modified with iron (III) hydroxide sol and silicic acid, has a 28 % higher technical and economic efficiency compared to traditional crushed stone-mastic asphalt-concrete. This is achieved by significantly improving the quality of the material compared to the necessary ones. Conclusions: the use of the powder based on diatomite, modified with the iron (III) hydroxide sol, and silicic acid as a filler in the composition of asphalt-concrete mixture makes it possible to increase the asphalt-concrete efficiency index by 35 %. The increase in technical and economic efficiency by 28 % justifies application of the modified filler.

DOI: 10.22227/1997-0935.2018.4.536-543

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