A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roadway Failure Study No. Ii. Behavior and Stabilization of Expansive Clay Soils
The report supplements information presented in the Roadway Failure Study No. 1 report, August 1966. In a substudy to determine the source of water infiltrating an expansive clay subgrade (Cody shale area), changes in moisture and density were measured periodically, by means of nuclear gages and limited sampling, beneath the pavement, shoulders, ditches and backslope, in both cut and fill sections of I-25 over a period of about 2 years, upon completion of paving. Construction consisted of 2-in. asphaltic concrete surfacing, 8-in. asphalt-treated base, with variable thickness of select sandstone subbase (min. of 3 ft.), and one section has a plastic membrane in the subbase, extending from beneath the outer edge of the pavement, through the shoulder and to the ditchline. In 2 years, only slight cracking had occurred in the asphaltic surfacing, but there was considerable increase in moisture content in the lower part of the subbase, wtih a lesser increase in the membrane section; therefore, it was concluded that water was entering the subbase through the shoulder areas and side slopes. Only slight increase in moisture had occurred in the upper foot of the subgrade in non-membrane sections, and no appreciable elevation changes due to subgrade swell had occurred; however, it is predicted that appreciable swell in the subgrade in non-membrane sections may occur over several years due to moisture being supplied through the subbase. (Author)
Roadway Failure Study No. Ii. Behavior and Stabilization of Expansive Clay Soils
The report supplements information presented in the Roadway Failure Study No. 1 report, August 1966. In a substudy to determine the source of water infiltrating an expansive clay subgrade (Cody shale area), changes in moisture and density were measured periodically, by means of nuclear gages and limited sampling, beneath the pavement, shoulders, ditches and backslope, in both cut and fill sections of I-25 over a period of about 2 years, upon completion of paving. Construction consisted of 2-in. asphaltic concrete surfacing, 8-in. asphalt-treated base, with variable thickness of select sandstone subbase (min. of 3 ft.), and one section has a plastic membrane in the subbase, extending from beneath the outer edge of the pavement, through the shoulder and to the ditchline. In 2 years, only slight cracking had occurred in the asphaltic surfacing, but there was considerable increase in moisture content in the lower part of the subbase, wtih a lesser increase in the membrane section; therefore, it was concluded that water was entering the subbase through the shoulder areas and side slopes. Only slight increase in moisture had occurred in the upper foot of the subgrade in non-membrane sections, and no appreciable elevation changes due to subgrade swell had occurred; however, it is predicted that appreciable swell in the subgrade in non-membrane sections may occur over several years due to moisture being supplied through the subbase. (Author)
Roadway Failure Study No. Ii. Behavior and Stabilization of Expansive Clay Soils
D. R. Lamb (author) / W. G. Scott (author) / R. H. Gietz (author) / J. D. Armijo (author)
1967
340 pages
Report
No indication
English
Civil Engineering , Ceramics, Refractories, & Glass , Miscellaneous Materials , Pavements , Asphalt , Soils , Concrete , Stability , Clay , Thickness , Cracks , Moisture , Density , Penetration , Sampling , Sealing compounds , Meters , Roads , Wyoming
Investigating Field Behavior of Expansive Clay Soils
| ASCE | 2001
Investigating Field Behavior of Expansive Clay Soils
| British Library Conference Proceedings | 2001
Cement stabilization of organic expansive soils
| British Library Conference Proceedings | 2008
Chemical and Lime Stabilization of Expansive Clay
| British Library Conference Proceedings | 1993