A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The study was initiated in 1950 as part of a national highway planning survey program fostered by the Bureau of Public Roads. The principal objectives were (a) to relate the performance of flexible pavements to their design, loading and environmental conditions, and (b) to check the validity of the design method in use at that time. Twenty-two pavement sections, ranging in length from about 4 to 26 miles, were included in the study. These pavements were considered to be representative of the designs, soils, environmental conditions and traffic existing within the State. Sampling and testing of the pavement structure components and roadbed materials were accomplished at several stations in each pavement section. Initial data collected for each station include: thicknesses of components; physical characteristics, moisture-density relations, laboratory CBR values, and R-value of untreated components; and various physical characteristics of the bituminous mixers. In addition, design traffic data for each pavement section were obtained. Subsequently the following data were collected: field moisture and density, and traffic volume and classification for 1951 to 1955, inclusive; CBR values for 1951 and 1952; roughometer indexes for 1953 and 1954 and annual sufficiency ratings for 1953 to 1962, inclusive. The flexible pavement design method adopted in 1947 is described. Analyses of the performance of 11 pavement sections designed by the method and modifications adopted in 1955 are discussed. A paper entitled 'Colorado's Flexible Pavement Design Method' was published in HRB Bulletin 136, 1956. (Author)
The study was initiated in 1950 as part of a national highway planning survey program fostered by the Bureau of Public Roads. The principal objectives were (a) to relate the performance of flexible pavements to their design, loading and environmental conditions, and (b) to check the validity of the design method in use at that time. Twenty-two pavement sections, ranging in length from about 4 to 26 miles, were included in the study. These pavements were considered to be representative of the designs, soils, environmental conditions and traffic existing within the State. Sampling and testing of the pavement structure components and roadbed materials were accomplished at several stations in each pavement section. Initial data collected for each station include: thicknesses of components; physical characteristics, moisture-density relations, laboratory CBR values, and R-value of untreated components; and various physical characteristics of the bituminous mixers. In addition, design traffic data for each pavement section were obtained. Subsequently the following data were collected: field moisture and density, and traffic volume and classification for 1951 to 1955, inclusive; CBR values for 1951 and 1952; roughometer indexes for 1953 and 1954 and annual sufficiency ratings for 1953 to 1962, inclusive. The flexible pavement design method adopted in 1947 is described. Analyses of the performance of 11 pavement sections designed by the method and modifications adopted in 1955 are discussed. A paper entitled 'Colorado's Flexible Pavement Design Method' was published in HRB Bulletin 136, 1956. (Author)
Flexible Pavement Performance Study
S. Williams (author)
1965
12 pages
Report
No indication
English
Factors influencing flexible pavement performance
| TIBKAT | 1966
Parametric Study of Factors Affecting Flexible-Pavement Performance
| Online Contents | 1995