A comparative analysis of the standard indicators for a nanoasphalt concrete of the type B prepared with the use of a nanocarbon powder and the asphalt concretes of the type B and stone mastic asphalt concretes (SMA20) with modifiers and without them has been performed in the work. The bitumens of the grades BND 70/100, BND 100/130 and BND 130/200 have been used for preparing of the asphalt concretes. The bitumens of the grades BND 70/100 and BND 100/130 have been produced by the Pavlodar petrochemical plant, and the bitumen of the grade BND 130/200 has been manufactured by compounding of the bitumen of the grade BND 100/130 and the petroleum tar of the same plant in Kazakhstan Highway Research Institute. A nanopowder (150-200 nm) has been manufactured from a coal rock of the deposit “Saryadyr” of the “Corpoation “ON-Olzha” LLP (Akmola region) by three-stage size reduction sequentially in a mechanical dispergator (up to 2-3 mm), an aerodynamic mill (up to 20 mcm) and a reactor with a rotating electromagnetic field (150-200 nm). To compare the standard indicators of 13 types of asphalt concretes have been prepared. The standard indicators of the asphalt concretes have been determined in a laboratory under the standard ST RK 1218-2003. The comparative analysis has been performed under the following 6 main standard indicators: a compression strength at the temperature of 50 ºС;a compression strength at the temperature of 20 ºС;a compression strength at the temperature of 0 ºС;the shear resistance (atfriction at the temperature of50 ºС);the crack resistance at the temperature of0 ºС; the water saturation. It is found out that thenanoasphalt concrete under the considered standard indicators can substitute practically all the main types of the asphalt concretes used in a road construction in many countries of the world and in Kazakhstan. It has essentially high resistance to the shear, low temperature and fatigue failures, cyclic freezing and thawing.

Comparative analysis of standard indicators for nanocarbon asphalt concrete and other asphalt concretes

Oliviero Rossi C.;
2020

Abstract

A comparative analysis of the standard indicators for a nanoasphalt concrete of the type B prepared with the use of a nanocarbon powder and the asphalt concretes of the type B and stone mastic asphalt concretes (SMA20) with modifiers and without them has been performed in the work. The bitumens of the grades BND 70/100, BND 100/130 and BND 130/200 have been used for preparing of the asphalt concretes. The bitumens of the grades BND 70/100 and BND 100/130 have been produced by the Pavlodar petrochemical plant, and the bitumen of the grade BND 130/200 has been manufactured by compounding of the bitumen of the grade BND 100/130 and the petroleum tar of the same plant in Kazakhstan Highway Research Institute. A nanopowder (150-200 nm) has been manufactured from a coal rock of the deposit “Saryadyr” of the “Corpoation “ON-Olzha” LLP (Akmola region) by three-stage size reduction sequentially in a mechanical dispergator (up to 2-3 mm), an aerodynamic mill (up to 20 mcm) and a reactor with a rotating electromagnetic field (150-200 nm). To compare the standard indicators of 13 types of asphalt concretes have been prepared. The standard indicators of the asphalt concretes have been determined in a laboratory under the standard ST RK 1218-2003. The comparative analysis has been performed under the following 6 main standard indicators: a compression strength at the temperature of 50 ºС;a compression strength at the temperature of 20 ºС;a compression strength at the temperature of 0 ºС;the shear resistance (atfriction at the temperature of50 ºС);the crack resistance at the temperature of0 ºС; the water saturation. It is found out that thenanoasphalt concrete under the considered standard indicators can substitute practically all the main types of the asphalt concretes used in a road construction in many countries of the world and in Kazakhstan. It has essentially high resistance to the shear, low temperature and fatigue failures, cyclic freezing and thawing.
Asphalt concretes
Bitumens
Carbon nanopowder
Crumb rubber
Polymers
Standard indicators
Stone mastic asphalt concretes
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/309036
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