This article describes the approbation of the humidity sensor in the real operating conditions of the road. The authors have developed a protective design of humidity sensors that meets the requirements for their laying in the ground floor, developed a mobile portable data reader. The technology of calibration, calibration and laying of sensors in the soil of the roadbed is presented. The analysis of the data obtained after calibration of the sensors.

Keywords: the soil subgrade, moisture monitoring in the conditions of the road, the humidity sensors

This article is dedicated to improving cold resistance and a possible reduction in of cracking rubble-sand mixtures, fortified with cement (SCHPTSS), in which in addition to widely used in the preparation of cement concrete and plasticizers (C-3, SS-5; Relamix, etc.) waste rubber technical articles were added in various fractions and particle size (rubber crumb and rubber flour).

Keywords: rubble-sand mixture, frost resistance, fracture strength, plasticizers, rubber flour, the compressive strength limit, tensile strength limit in bending