| Popis: |
Ground penetrating radar (GPR) (500 and 800 MHz) was applied for simulation model constructed in Al-Baladiyat district, Baghdad-Iraq. The obtained data results demonstrated the strongly correlation of electromagnetic (relative permittivity of sub-asphalt layers acquired from GPR) with soil water content. Two-way time, velocity of electromagnetic waves traveled through four section layers of simulation model and their relative permittivity as well as the volumetric water content have been calculated. Two formulas have been derived from GPR data to find a relation between volumetric water content and relative permittivity for crushed gravel and selected granular materials used for base and sub-base layer successively. Thus, water content can be estimated from available empirical equations or from equations derived from the obtained data. |
