Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"unpaved roads"”.
-
Optimal maintenance frequencies for unpaved roads
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1988.
-
Geosynthetic stabilization of unpaved roads on soft ground : a field evaluation
… the performance of different geosynthetics in unpaved road construction over soft ground. The test site comprises five 16 m long, by 4.5 m wide test sections, built on a subgrade of undrained shear strength approximately 40 kPa. One is unreinforced and serves as a control section in the study, …
-
Evaluation of road erosion prediction models applied to unpaved roads in a small tropical watershed in Eastern Brazil
Tropical regions have extensive networks of unpaved roads which can be the largest contributor of sediment loading within a watershed in terms of both sediment generation and delivery. A number of erosion and sediment prediction models have been developed for unpaved roads and applied across a wide …
-
Pied crow in South Africa: integrating ecological and social dimensions for effective management
… abundance and higher breeding performance along roads with more roadkill. I also hypothesized that roadkill availability may differ between road types (paved and unpaved roads) because paved roads have more vehicles traveling faster, which would increase roadkill prevalence. If this was the case, …
-
Evaluation of the feasibility of posting reduced speed limits on Kansas gravel roads
In the United States, the mileage of unpaved roads is about 1.6 million miles. Total length of unpaved roads in Kansas is about 98,000 miles, of which about 78,000 miles are gravel roads. Most of the gravel roads are not posted with speed limit signs but regulated with a 55 mph blanket speed limit …
-
An investigation of the effect of dynamic and static loading to geosynthetic reinforced pavements overlying a soft subgrade
Construction of roads over soft soils can lead to design and construction related problems linked to the soil's compressibility characteristics and low strength. Failure, in terms of bearing capacity can occur when pavements are constructed over such soft soils. When road pavements, which are …
-
Further development and application of computer-assisted creativity to rural road resources management projects
… the practice of expanding the rural dirt (unpaved) roads rather than spending limited resources on maintenance. Some donor agencies are now inclined to only support maintenance-biased road projects. A similar situation arose in Pakistan where the U.S. Agency for International Development …
-
Evaluation and improvement of optical remote sensing methods in monitoring particulate matter emissions and plume opacity
… fugitive PM emissions from mobile vehicles on unpaved roads, as well as open burning or detonation of energetic materials. The fugitive PM EFs from these two sources were also measured by at least one independent and concurrent method for comparison. The results show that PM EFs measured by …
-
Ambient air pollution monitoring, modelling and human health risks in Thulamela Municipality, Vhembe District of Limpopo Province, South Africa
… unaccounted sources such as biomass burning, unpaved roads, industrial activities, and agricultural emissions. At Lunungwi village (RL receptor group), the modelled hourly PM2.5 concentration (47.12 μg/m³) exceeded the observed value (32.27 μg/m³, FAC2 = 0.25), indicating localised …
-
ΘΕΩΡΗΤΙΚΗ ΚΑΙ ΠΡΑΚΤΙΚΗ ΔΙΕΡΕΥΝΗΣΗ ΤΗΣ ΕΦΑΡΜΟΓΗΣ ΤΩΝ ΓΕΩΦΑΣΜΑΤΩΝ ΣΤΗΝ ΕΝΙΣΧΥΣΗ ΔΡΟΜΩΝ ΧΑΜΗΛΗΣ ΚΥΚΛΟΦΟΡΙΑΣ
THE DOCTORAL THESIS COMPRISES THE FOLLOWING SUBJECTS: 1. EXTENDED PRESENTATION OF THE RESEARCH ARTICLES CONCERNING THE PROPERTIES AND APPLICATIONS OF GEOTEXTILES. 2. FUNCTIONS ACCOMPLISHED BY A GEOTEXTILE LAID IN THE INTERFACE BETWEEN ANUNPARED PAVEMENT AND THE SUBGRADE. 3. PRESENTATION OF THE …