STRUCTURAL EVALUATION OF FLEXIBLE PAVEMENT BY USING AASHTO 1993 AND BINA MARGA 2013 METHOD (Case Study: Nasional Road from Losari to Cirebon)

• Main Author: HARIS FAHRUDDIN AJI (nim : 26912327), AKHMAD
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25277
• Institution: Institut Teknologi Bandung

<p align ="justify">At the present time Directorate General of Highways has issued the latest Pavement Design Manual 2013, revising or replacing previous pavement design guidelines, be expected with the new manual the challenges related with road asset performance issues can be accommodated comprehensively and described through mechanistic design approaches. The purpose of of this research is to analyze structural flexible pavement by using Bina Marga 2013 Method and comparing with AASHTO 1993 Method, both of which are part of the nondestructive evaluation methods. Structural evaluation of flexible pavementby AASHTO 1993 Method carried out based on data deflections d1 and d6 of survey FWD (Falling Weight Deflectometer) to calculate value of Resilient Modulus of subgrade (MR) and Pavement Effective Modulus (EP), and then it used to determine SNeff value (Structural Number Effective), SNf value (Structural Number in the Future), and overlay thickness. While Bina Marga 2013 Method, first step of evaluation is analyzingthe choice of treatmentwhich is based on 3 trigger value, ie: Deflection Trigger, IRI Trigger, and ConditionsTrigger, then continued by calculation of overlay thickness through mechanistic design approaches with graphics and General Mechanistic Procedure (GMP). Based on the results of the analysis AASHTO 1993 Method pavement modeling is limited to two (2) layers of modeling, remaining life showed thatthe condition of road is fairly critical, ie 65.59%so that the necessary treatment on that road, the results of overlay thickness calculationsis quite varied, ranging from 6 cm to 11 cm, depends on SNeff value (Structural Number Effective) on each segment. While the results of the analysis with Bina Marga 2013 Method type of treatment in the next design is Structural Overlayand pavement modeling assumes that the pavement is divided into two (2) layers and three (3) layers. Overlay thickness which obtained throughGeneral Mechanistic Procedure (GMP)approaches for 10 year design life, for modeling assumptions two(2) layers requires overlay thickness50 mm, while modeling assumptions three (3) layers does not require overlay thicknes Comparison of the two methods shows that overlay thickness calculation of Bina Marga 2013, is thinner than calculation of AASHTO 1993for the same modeling assumptions, this is because Bina Marga 2013 using the analytical method with the help of CIRCLY programs so that strain stress analysis of structural as a response of pavement can be determined more accurately and represent the actual conditions on site, compared to analytical-empirica method used in AASHTO 1993 Method<p align ="justify">