| Title | Determination of AASHTO Layer Coefficients Volume II: Unbound Granular Bases and Cement Treated Bases, Study 90-5 |
|---|---|
| Record ID | 78967 |
| Personal Name Creator |
Richardson, David N.; Kremer, Paul A. |
| Corporate Creator | University of Missouri--Columbia. Dept. of Civil Engineering |
| Corporate Contributor |
Missouri. Highway and Transportation Dept.; United States. Federal Highway Administration |
| Publisher | Missouri. Department of Transportation |
| Publication Date | 19941201 |
| Language | English |
| Abstract | The purpose of this study was to determine the layer (a) coefficients for several commonly specified materials used in MHTD designed pavements for use in the 1986 AASHTO Guide pavement design method. The project entailed a review and compilation of published literature, laboratory testing, analysis of results, and preparation of this report. The study was divided into two parts. Volume I presented the determination of layer coefficients for several Type C and I-C asphalt surface mixes and plant mix bituminous bases. This Volume II presents the layer coefficients determined for granular and soil-cement materials. Layer coefficients were shown to be a function of the resilient or static modulus for each material. Resilient moduli were determined for four sources of the unbound granular Types 4 and 2 base material (two crushed stones, two gravels). In addition, static compressive chord moduli were determined for two cement-treated soils. Additional tests included sieve analyses, hydrometer analyses, specific gravities, Atterberg limits, aggregate particle shape/surface texture determinations, standard and modified proctor densities, and vibratory table relative densities. |
| Rosap ID | dot:54238 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/54238 |
| TRT Terms | Coefficients; Granular bases; Concrete bases; Pavement layers |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1766530 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/78000/78900/78967/007804.pdf |
| Format | |
| Database | NTL Digital Repository |