PAVEMENTS OF FPE WITH UNDERSIDE SURFACE OF PYRAMIDAL AND RIBBED ELEMENTS

Abstract

When improvement of house adjoining territories, sidewalks, garden paths, parking lots and areas for various purposes, pavements of figured paving elements (FPE) made of concrete are used in large volumes. During their operation, various deformations are sometimes observed, the reasons for which may be the wrong choice of the constructive-technological solution and the low bearing capacity of the pavement. In order to prevent deformations, it is necessary to search, develop, research and further introduce into construction production new pavements of FPE with improved quality characteristics. The article is devoted to the improvement of constructive-technological solutions of pavements, foot ways, and areas for various purposes, made of figured paving elements. Two variants of new paving elements with an underside having a modified geometric shape are proposed – with one pyramidal element located in the center, and ribbed prismatic elements located along the perimeter. Hypotheses about the advantages of the proposed FPE variants have been developed. An increase in the area of the underside will allow the external load to be transferred to a larger volume of the underlying structural layer of the pavement, which will enable the pavement to take the increased load. The shape of the underside during the installation of FPE contributes to additional compaction of the underlying sand layer and a decrease in the possibility of horizontal displacement when a horizontal load is applied to the pavement. Consequently, the quality characteristics of the proposed pavement will improve – bearing capacity and durability. The calculation of the heights of the upper prismatic parts of the new variants of the FPE with the proposed parameters of the underside and the shape in plan, the results of which indicate their insignificant decrease relative to the height of the traditional FPE with a flat underside. To confirm the hypotheses, the plan of experiments on the influence of a long-term vertically applied load on the FPE settlement and the density of the underlying structural layer is proposed. The factors influencing the operation of the pavement and the output parameters are selected. The necessary equipment and materials were selected.