Environmental effects on the non-destructive evaluation of plain jointed concrete pavements using falling weight deflectometer /
The effects of changes in the environment on the plain
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: |
| Summary: | The effects of changes in the environment on the plain jointed concrete pavement (JCP) performance and material properties are investigated. The environmental factors considered in the study are ambient temperature and relative humidity. The data needed for the research study was collected from field experiments conducted on two prototype concrete slabs. These concrete slabs were instrumented with specially designed experimental tools to obtain temperature and relative humidity at different thickness of the slabs. The performance and material properties, collectively termed as evaluation parameters, of the prototype concrete slabs were obtained nondestructively using falling weight deflectometer (FWD). T'he JCP evaluation factors included in this research study are deflection bowl, void detection, and engineering properties of concrete and subgrade. The environmentally induced slab movements known as curling and warping, which are caused by the changes in temperature and relative humidity, were studied. The field slab movements caused by curling and warping and measured using multiple depth deflectometers (MDD) were compared with the theoretical predictions made by mathematical models like ILLISLAB and modified Westergaard solution (MODWES). The theoretical curling and warping model that closely represented field data was chosen to explain the noted variability in JCP behavior. |
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| Item Description: | Vita. "Major subject: Civil Engineering". |
| Physical Description: | xii, 119 leaves : illustrations ; 28 cm. |
| Bibliography: | Includes bibliographical references. |