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DEVELOPMENT AND COMPARISON OF PERMEABILITY MEASUREMENT TECHNIQUES FOR JOINTED CONCRETE PAVEMENT BASES.
| 题名： | DEVELOPMENT AND COMPARISON OF PERMEABILITY MEASUREMENT TECHNIQUES FOR JOINTED CONCRETE PAVEMENT BASES. |
| 作者： | Bodocsi-A; Minkarah-IA; Amicon-A; Arudi-RS |
| 关键词： | JOINTED-REINFORCED-CONCRETE-PAVEMENTS; BASE-COURSES; PERMEABILITY-MEASUREMENT; GEOTECHNICAL-METHODS; EDGE-OF-SLAB-TESTS; MIDSLAB-TESTS; TEST-RESULTS |
| 摘要： | Prior research has shown that a well-drained base ia a very important requirement for preserving the soundness of a highway pavement. Although adequate knowledge exists to guide an engineer in the design of a new pavement with good drainage characteristics, there are no established methods to estimate the quality of drainage under an existing pavement and therefore to estimate its life expectancy or to properly design its overlay. A summary is presented of research efforts aimed at investigating and adapting existing techniques from the geotechnical area for the development of methods for measuring the permeability of pavement bases. Two geotechnical methods were adapted, and one new technique was developed. The first two methods were used to conduct permeability tests near the middle of the pavement slabs, using either constant head or falling head setups. These were named the Midslab Constant Head Permeability Test and the Midslab Falling Head Permeability Test, respectively. The third method was designed for conducting permeability tests near the edge of a slab. This method was named the Edge-of-Slab Constant Head Permeability Test. Numerous permeability tests were conducted under a jointed reinforced concrete test pavement in Chillicothe, Ohio, using these three methods. It was found that the tests conducted near the edge of the slab held the most promise, even though the method needs further refinements. However, the results of the edge-of-slab test were quite different from those of the midslab test partly because of the erosion of fines from the base in the edge-of-slab test. In addition, it became clear from the tests that the field test results were considerably different from laboratory test results. |
| 总页数： | Transportation Research Record. 1994. (1434) pp37-43 (4 Fig., 5 Tab., 9 Ref.) |
| 报告类型： | 科技报告 |
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