Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Determination of Remaining Flexible Pavement Life. Volume II. Flexible Pavement Remaining Life Characteristics Interpreted from Theory and Laboratory Fatigue Test
Three Maryland state highways were analyzed. Eighteen inch diameter cores were obtained from which fatigue beams were tested. In conjunction with the lab study, a theoretical highway remaining damage model was developed to assist in correlations between predicted and observed remaining life. The model considers the lateral wander effect of the vehicle as well as the variable tensile strain pattern in a radial direction due to a 9 kip dual wheel load. The objective of the study was to assess the general feasibility of using field specimens of asphaltic concrete, tested in the lab for fatigue resistance, to measure the remaining life of a pavement. The study hypothesis was that differences in fatigue life would occur for beams sampled and tested from various traffic lanes (2, 4 or 6 feet) on a pavement. It was found that the use of fatigue tests from in-situ field specimens to determine remaining damage analysis has potential but questionable merit. Results are felt to be applicable only to the base course layer (bituminous layer) and not applicable for surface analysis. Results indicate that remaining damage is affected by lateral location and orientation of the fatigue beam. Beams in the wheel path tend to have a lower remaining life. Remaining damage of transverse beams was higher than longitudinal beams at the same lateral location. This difference becomes negligible towards the center of the traffic lane.
Determination of Remaining Flexible Pavement Life. Volume II. Flexible Pavement Remaining Life Characteristics Interpreted from Theory and Laboratory Fatigue Test
Three Maryland state highways were analyzed. Eighteen inch diameter cores were obtained from which fatigue beams were tested. In conjunction with the lab study, a theoretical highway remaining damage model was developed to assist in correlations between predicted and observed remaining life. The model considers the lateral wander effect of the vehicle as well as the variable tensile strain pattern in a radial direction due to a 9 kip dual wheel load. The objective of the study was to assess the general feasibility of using field specimens of asphaltic concrete, tested in the lab for fatigue resistance, to measure the remaining life of a pavement. The study hypothesis was that differences in fatigue life would occur for beams sampled and tested from various traffic lanes (2, 4 or 6 feet) on a pavement. It was found that the use of fatigue tests from in-situ field specimens to determine remaining damage analysis has potential but questionable merit. Results are felt to be applicable only to the base course layer (bituminous layer) and not applicable for surface analysis. Results indicate that remaining damage is affected by lateral location and orientation of the fatigue beam. Beams in the wheel path tend to have a lower remaining life. Remaining damage of transverse beams was higher than longitudinal beams at the same lateral location. This difference becomes negligible towards the center of the traffic lane.
Determination of Remaining Flexible Pavement Life. Volume II. Flexible Pavement Remaining Life Characteristics Interpreted from Theory and Laboratory Fatigue Test
M. W. Witczak (Autor:in) / E. H. Dalton (Autor:in)
1978
270 pages
Report
Keine Angabe
Englisch
Highway Engineering , Flexible pavements , Mathematical models , Loads(Forces) , Bituminous concretes , Cracking(Fracturing) , Fatigue(Materials) , Failure , Deterioration , Life tests , Flexural strength , Stiffness tests , Maintenance , Maryland , Tests , Maryland route 695 , Maryland route 97 , US highway 1
Prediction of Pavement Remaining Life
| British Library Online Contents | 1996
Prediction of Pavement Remaining Life
| British Library Conference Proceedings | 1996