RESEARCH OF BUILDING MATERIALS

Development of asphaltic mix with waste products use

Vestnik MGSU 6/2014
  • Pugin Konstantin Georgievich - Perm National Research Polytechnic University (PNRPU) Candidate of Technical Sciences, Associate Professor, Department of Automobiles and Production Machines, Perm National Research Polytechnic University (PNRPU), 29 Komsomol’skiy prospekt, Perm, 614990, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Yushkov Vladimir Sergeevich - Perm National Research Polytechnic University (PNRPU) Senior Lecturer, Department of Automobiles and Technological Machines, postgraduate student, Department of Automobile Roads and Bridges, Perm National Research Polytechnic University (PNRPU), 29 a Komsomol’skiy prospekt, Perm, 614990, Russian Federation; +7 (342) 239-16-54; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 99-104

The trend of high growth of the vehicle fleet in Russia along with the positive impact on the socio-economic development of the country has a number of adverse consequences, one of which is the high accident rate on the roads. The paper considers modern way to provide the safe vehicles flow with the use of colored asphalt, which is a kind of hot asphalt and can have a variety of colors, which consists of coloring pigments. The conventional method of coloring the asphalt mix is produced by adding color rubble or pigmenting additives. The task, which was put forward, was the establishment of such road concrete mix, from which, without the use of primary materials and without increasing the consumption of bitumen, asphalt concrete road surfaces of acceptable strength could be obtained. As a pigment the dust of gas purification system of electrical furnace DSP – 60 of «Kamastal» plant, Perm, was used. The composition of the dust waste from the furnace consists of metal oxides and silicates. Dust-gas-cleaning is a fine powder with a high specific surface (1.2…2.5 thousand cm2/g) and bulk density of 3.7…4.2 g/cm3. The powder color is dark brown. The density of the ready colored asphalt samples is 2.47...2.49 g/cm2, and water saturation is 3.50…3.55 %. As a result of the research the diagrams of the dependence of road concrete mix’s water saturation from dust percentage and a diagram of dependence of concrete mixes’ durability from dust percentage at t = 20° and 50° C were built. After analyzing the obtained curves it can be concluded that the increase of the percentage of dust leads to increase of water saturation of road concrete mix and reduced strength.
Thus, the developed asphalt concrete mix allows visually separating the lanes on the road, it has the relevant regulatory requirements durability and water resistance. This mixture corresponds to the type B mark III and can be used in regions I, II, and partly III of road-climatic zones, characterized by cold and humid climate.

DOI: 10.22227/1997-0935.2014.6.99-104

References
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Regularities of formation of adhesive contact “sol-silicate paint - substrate”

Vestnik MGSU 1/2019 Volume 14
  • Loganina Valentina I. - Penza State University of Architecture and Construction Doctor of Technical Sciences, Professor, Head of Department of Quality Management and Technology of Construction Production, Penza State University of Architecture and Construction, 28 Germana Titova st., Penza, 440028, Russian Federation.
  • Mazhitov Erkebulan B. - Penza State University of Architecture and Construction postgraduate student of the Department of Quality Management and Technology of Construction Production, Penza State University of Architecture and Construction, 28 Germana Titova st., Penza, 440028, Russian Federation.

Pages 94-101

Introduction. The use as a binder in the manufacture of silicate paints polysilicate solutions obtained by mixing liquid glass and silica sol is considered. To regulate the rheological properties of the paint, improve the filling and prevent the pigment part from sagging, it has been proposed to introduce glycerin into the binder composition. The results of studying the interfacial interaction between the paint and the substrate are given. Materials and methods. In developing the formulation of silicate paints based on polysilicate solutions, MK-2 microcalcite, marshalite, diatomite and talc of MT-GSM grade were used as a filler, and titanium dioxide as a pigment. Polysilicate solutions were obtained by reacting stabilized solutions of colloidal silica (sols) with aqueous solutions of alkali silicates (liquid glasses). Nanosil 20 and Nanosil 30 silicic acid sol were used, produced by the Promsteklocentr PC. Used potassium liquid glass with module M = 3.29. A thermodynamic method was used to assess the interfacial interaction. Results. Shown that the introduction of glycerol into the formulation of a sol of silicate paint promotes a decrease in the interfacial surface tension and a better wetting of the surface of the mortar substrate. An increase in wetting coefficient is observed. Coatings based on sol silicate paints with the addition of glycerin are characterized by increased crack resistance. An increase in tensile strength, maximum tensile properties, and decrease in the elastic modulus of paint membranes based on the composition with glycerol has been established. The values of the free surface energy of the coating based on the sol of silicate paint and the ratio of the polar to the dispersion component of the free energy of the surface are given. Coatings based on sol of silicate paint with the addition of glycerin are characterized by a large value of the free energy of the surface. In the process of moistening a decrease in the free surface energy is observed due to a decrease in the dispersion component. Conclusions. Studies have shown that the introduction of an additive of glycerin in the formulation of a silicate paint sol contributes to an increase in the performance properties of coatings based on it.

DOI: 10.22227/1997-0935.2019.1.94-101

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