Huseyn Mammadov, Irada Suleymanova, Tahirov Bahadur

artificial porous aggregate, density, strength, expansion temperature, high-strength lightweight concrete.

This paper relates to the obtaining of an artificial porous aggregate from slag waste of non-ferrous metallurgy. The developed technology permits to widen raw stuff basis of producing artificial porous aggregates for lightweight concretes. The investigations have demonstrated that granulated slags which are a by-product and are obtained through making non-ferrous metals, can be utilized as a basic starting raw material for manufacturing an artificial porous aggregate. From the results of the investigations expansion intervals of a mass based on the studied slags of metallurgical plants are determined. The technology of obtaining an artificial porous aggregate with the prescribedphysico-mechanical characteristics has been worked out. The main physico-mechanical characteristics of the produced aggregate have been studied. It has been revealed that the obtained artificial porous aggregate meets the requirements of the acting standard GOST 9757-90 “Gravel, Crushed Stone and Sand, Artificial Porous” by its physico-mechanical characteristics. It is found that the strength of the obtained aggregate 1.5-2.0 times exceeds that of the well-known aggregate- keramzit gravel. Using porous sand lightweight concrete of B7.5-B40 strength class with density of 1100-1600kg/cu.m has been produced on the base of the obtained gravel and high-strength lightweight concrete of strength class B25-B50 with density of 1500-1800 kg/cu.m has been manufactured with the use of dense sand and plasticizing additives.

10.22161/ijaers.5.10.16

[1] Rogovoy M.I. Technology of Artificial Porous Aggregates and Ceramics // Ekolit, 2011, -320pp.
[2] Korolev E.V., Inozemtsev A.S. High-strength Lightweight Concretes: Structure and Properties / / Concrete and Reinforced Concrete - a Look into the Future. III All-Russian (II International) Conference on Concrete and Reinforced Concrete, Vol. V, M., 2014, pp.277-285.
[3] Davidyuk A.N. Lightweight Concretes Made with Glass Granulates - Future of Space Enclosing Structures, Concrete and Reinforced Concrete, 2016, No. 1, pp.2-4.
[4] Bazhenov Yu.M., Korolev E.A. and others. Space Enclosing Structures with the Use of Low Heat-Conduction Concretes. Fundamentals of the Theory, Methods of Calculations in Technological Design.M., ASV, 2008, -320s.
[5] Yermakovskiy V.N., Semchenkov A.S. Structural Lightweight Concrete of New Modifications - in Resource-saving Structural Systems of Buildings // Academia. Architecture and Construction, 2010, No 3, pp.31-39.
[6] Antonenko L.V., Bigildeeva G.M. etc. The Use of Thermal Power Station Slags for Keramzit Production.Science techn.abstr. inf., series “Ceramic Wall Materials and Porous Aggregate Industry”. M., VNIISMM, 1980, No 1, pp.1-6.
[7] Babenishev V.I. Reducing Volume Density of Expanded Clay by Adding Waste of Coke and Benzene Production Waste. Journal "Building Materials", 1977, №10, 12 pp.
[8] Zavadsky V.F., Onitsenko A.I., OznobukhinYu.I., Okun F.I. Obtaining Claydite Gravel Using an Oil Sludge Additive. Ref. inf., Ser. Ceramic Wall Materials and Porous Aggregate Industry. M., VNIISMM, 1981, issue 2.
[9] The Use of Steel-melting Slags in Building Materials. Review .inform., Ser. II. Use of Waste, By products in the Fabrication of Building Materials and Products. Environmental Protection, Moscow, VNIISMM, 1983, 40 pp.
[10] Belik G. Ya., Dumcheva V.V., Mishurin Yu. N. Use of Shale Ash of Thermal Power Station Dumps Abstr. Inform. Series 4, Ceramic Wall Materials and Porous Aggregate Industry, M., VNIISMM, 1980, issue 6, pp.6-7.
[11] Mamedov G.N. High-strength Artificial Porous Aggregates, Baku, 2000, -222pp.
[12] Mamedov G.N., Mirzoyev M.M. Porous Gravel Based on Various Slags and Low Expansion Stone-like Clays, High-strength Lightweight Concretes on Their Base// M., Concrete Technology, No 11, 2014, pp.16-18.
[13] GOST 9758-12 “Inorganic Aggregates for Concretes. Testing Methods”.
[14] GOST 9757-90 "Gravel, Crushed Stone and Sand. Artificial Porous. Specifications”.