ANALYSIS OF CONDITIONS APT TEST FLEXIBLE PAVEMENT STRUCTURE BASED ON HDM-4 MODELS

• Main Author: PERDANA GULTOM (NIM. 269 14 003), PANDU
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23649
• Institution: Institut Teknologi Bandung

The case study of this research is testing the APT conducted at the Alusan <br /> <br /> <br /> Laboratory of Pusjatan. The APT testing applied to a test pavement structure <br /> <br /> <br /> consisting of two (2) sections of pavement. Both of that section of pavement are <br /> <br /> <br /> divided based on traffic loads to be applied. In section I planned to track the number <br /> <br /> <br /> of 750,000, while in section II will be applied 1,500,000. This thesis will discuss <br /> <br /> <br /> how the conditions of section I of test pavement structure. In the process of the <br /> <br /> <br /> development of this research, the data available from the testing APT only to the <br /> <br /> <br /> imposition of ± 200,000 repetition. So that the data used for the analysis is limited <br /> <br /> <br /> to that number repetition. <br /> <br /> <br /> The structure of the test pavement is built on indoor facilities, so that the nonexistent <br /> <br /> <br /> water factor and the almost uniform temperature do not have a significant <br /> <br /> <br /> effect. The decrease in the quality of the test pavement structure is greatly <br /> <br /> <br /> influenced by the traffic load applied to it. APT testing is performed after 1 year <br /> <br /> <br /> delay from the time the test structure is completed. It turns out that from the <br /> <br /> <br /> measurement data, the subgrade of the test pavement structure consisting of lime <br /> <br /> <br /> stone improves during 1 year. This causes an increase in strength of the test <br /> <br /> <br /> pavement structure. <br /> <br /> <br /> The model HDM-4 is a predictive model of damage that can be used to predict the <br /> <br /> <br /> initial of damage to a road pavement structure and how its progression. With the <br /> <br /> <br /> prediction model, expected we can draw up a program of maintenance of a road <br /> <br /> <br /> network. Damage will be modeled such that cracking, ravelling, potholes, edge <br /> <br /> <br /> breaks, rutting, roughness, texture depth, and skid resistance. In this APT test the <br /> <br /> <br /> visible damage visually is rutting, skid resistance, and texture depth. <br /> <br /> <br /> The analysis process is done by analyzing the FWD and MDD deflections required <br /> <br /> <br /> to obtain the existing ITP values, analyze the ruth depth, then predict the damage <br /> <br /> <br /> that will occur using the HDM-4 model and compare it with the actual condition of <br /> <br /> <br /> the test pavement structure. Visually the condition of the test pavement structure <br /> <br /> <br /> has not shown any significant damage.