Abstract
Introduction New scientific achievements, modern equipment and new materials have to be used for the quality rehabilitation of the road transport network. New materials have to meet the requirements for improving the physical and mechanical properties of roads and a positive economic effect must be achieved. The role of modern and advanced material is hydro-removal ash, which not only improves the physical characteristics of mixtures and saves the funds, but also has a positive impact on the environment. This material is used as independently also in combination with other mixtures, such as: cement concrete mixture, asphalt concrete mixture, crushed stone - sand mix strengthened with mineral binders Purpose The purpose of research is to study the effectiveness of the use of hydro - removal ash in crushed stone-sand mixtures strengthened with mineral binders, to determine the optimal volume of ash and its effect on physical parameters in different combinations with mineral binders. Materials and methods. Experimental tests of crushed stone- sand mixture 20 strengthened with mineral binder with different volume of hydro - removal ash were performed. Results The efficiency of hydro - removal ash in crushed stone - sand mixtures strengthened with mineral binders is determined, the optimal volume of ash to reach the required physical parameters is determined, the pattern of changes in physical and mechanical parameters depending on the ash content is shown. Висновки. Experimental tests have shown that hydro - removal ash affects effectively the physical properties of the final product, its use saves funds and natural resources, and reaches positive changes in the environment. These factors indicate that the hydro - removal ash is recommended for use in the road industry. Keywords: road, hydro - removal ash, grain selection, strengthening, pavement, physical and mechanical properties.
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