Avaliação das condições superficiais em estradas não - pavimentadas, caso da Vilankulo Madeira - Chibuene

Abstract

Unpaved roads occupy most of the Mozambican road network. needs to be in good condition to meet the demand of socio-economic needs and cultural aspects of the population, however, the surface conditions of these roads should be evaluated, in order to possible good transitability, or in deciding the activity to be carried out to safeguard its surfaces, this is considered as the focal point of the present work. In order to achieve this objective it was necessary to take into account the following methodologies described in stages, comprised of bibliographic review, field and office work, in addition to knowing the study area, where, everything shows that the Vilankulo Madeira - Chibuene road is located in the Vilankulo municipality, with an extension of 7.50 km, an average width of 6.50 m and the soil of the frank - sandy type, mention that the road is unclassified and is simply embankment. For the data collection needed to carry out a sampling, for which initially the total number of sampling units for the road in general was determined, which was 210 units, 15 units of sample interval and 14 minimum units of sample to be inspected. In order to comply with it, a defect inspection form prepared by the (EATON at el, 1987) and finally the data were analyzed with the aid of value curves deducted, a brief description of the defects and analysis of severity levels. Emphasize that, results obtained in the evaluation, were discussed according to what the URCI method from the description presented in the methodologies, where, the inadequate drainage defects, sinking of wheel tracks and cross section are those that presented greater area deteriorated with about 15,000; 13,588.7 and 7,500 m2 respectively and with an average URCI of 14.1 is between 10 - 25 of values ​​established by the method in the classification table of (EATON at el, 1987), which means the road is classified as being very poor conditions bearing, and mention that, in terms of the constructive activities evaluated from the URCI, it was found that 14,1 is between 0 - 25 in the maintenance priority diagram, where is classed as a failed road.However, the conclusion was reached that the road was successfully assessed, having identified and analyzed the defects and their levels of severities were also determined the constructive activities where it was classified as a failed road, so it is recommended that you report the results to ANE, SDPI that applies the URCI method to other roads in Vilankulo, also that it is evaluated periodically the road in order to keep it in a decent or passable rolling condition.