Research of the water permeability of the base layer of the road pavement structure from unbound mixture, using a vertical tubular infiltrometer

Abstract

This article analyzes the relationship between the water permeability and filtration coefficient of the unbound base layer of a road pavement structure. After installing a protective frost-resistant layer, one of the control tests performed is the determination of the water permeability coefficient k10. Currently, this test is performed in the laboratory on a sampled object. Usually, this test lasts about 1–3 working days, depending on the volume of data required for the suitability test. While other control tests last shorter. In order to accelerate the acceptance of works, the water permeability of the layer under outdoor conditions can be determined using a vertical tubular infiltrometer. The article analyzes the measurement of the water permeability of the base layer of a road pavement structure using an infiltrometer. The results of measurements of the filtration coefficient and water permeability coefficient of a layer from an unbound mixture, carried out in different objects with different materials, are analyzed. The dependence between the filtration and water permeability coefficients of the unbound mixture is evaluated.