| Author | Kittipong Suppatkul |
| Call Number | AIT Thesis no.1018 |
| Subject(s) | Pavements--Design and construction
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree
of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | California Bearing Ratio (CBR) and plate bearing tests (12" and 30" m. plate) were conducted in a shallow field test pit on Bangkok Clay and in a 2 deep concrete test pit in which a pavement structure consisting of
compacted clay, lateritic soil and crushed rock aggregate had been built. Extensive CBR testing was also performed in the laboratory on unoaked and
soaked samples of clay, lateritic soil and crushed rock aggregate compacted at various efforts.
CBR-values obtained in the concrete test pit were somewhat lower than laboratory values for all three materials in the unoaked condition, where
as those measured in the field test pit were slightly higher. Design CBR values were selected as 2%, 25% and 70% for the clay, lateritic soil and
crushed rock, respectively.
The coefficient of subgrade reaction, k, from 12" plate tests was about twice the value of the 3011 plate and the ratio of k-values between clay, lateritic soil and crushed rock was about 6:3 :1. In--situ soaking of clay greatly reduced the k-value. Results from repetitive plate bearing tests indicated a considerable decrease of allowable pressure with increasing number of load repetitions. Finally, the results were used for estimating the layer thickness in a rigid and flexible pavement using three different design procedures, |
| Year | 1979 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Brenner, R.P.
|
| Examination Committee(s) | Balasubramaniam, A.S. ;Holmberg, Soren
|
| Scholarship Donor(s) | The Royal Netherlands Government |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1979 |