A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Determination of the In Situ Permeability of Base and Subbase Courses
The development of a prototype in situ test device, designated the field permeability testing device (FPTD), for determination of the permeability of highway base and subbase courses is described and discussed. The research consisted of two phases. Phase I involved the development and laboratory investigation of feasibility in situ permeability measurement techniques, which led to the selection of the velocity method of in situ permeability determination for further development. Phase II involved the construction of a prototype field permeability test device (FPTD) and an extensive program of laboratory and field evaluations of this equipment. Based on the results of these studies, it was concluded that the prototype field permeability test device (FPTD) developed during this project satisfies project objectives and provides a convenient means for the determination of the in situ coefficient of permeability of highway bases and subbases with reasonable accuracy and reproducibility. This device permits the consideration in design of saturated hydraulic conductivity (permeability of bases and subbases and also permits the development of construction specifications for the permeability of these materials, since it makes available, for the first time, a mechanism for the evaluation and control of permeability during construction.
Determination of the In Situ Permeability of Base and Subbase Courses
The development of a prototype in situ test device, designated the field permeability testing device (FPTD), for determination of the permeability of highway base and subbase courses is described and discussed. The research consisted of two phases. Phase I involved the development and laboratory investigation of feasibility in situ permeability measurement techniques, which led to the selection of the velocity method of in situ permeability determination for further development. Phase II involved the construction of a prototype field permeability test device (FPTD) and an extensive program of laboratory and field evaluations of this equipment. Based on the results of these studies, it was concluded that the prototype field permeability test device (FPTD) developed during this project satisfies project objectives and provides a convenient means for the determination of the in situ coefficient of permeability of highway bases and subbases with reasonable accuracy and reproducibility. This device permits the consideration in design of saturated hydraulic conductivity (permeability of bases and subbases and also permits the development of construction specifications for the permeability of these materials, since it makes available, for the first time, a mechanism for the evaluation and control of permeability during construction.
Determination of the In Situ Permeability of Base and Subbase Courses
L. K. Moulton (author) / R. K. Seals (author)
1979
170 pages
Report
No indication
English
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