KORELASI NILAI INTERNATIONAL ROUGHNESS INDEX (IRI) HASIL PENGUKURAN ALAT MERLIN DAN BUMP INTEGRATOR

• Main Author: Hutagalung, Dameria
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/5400
• Institution: Institut Teknologi Bandung

<b>Abstract:<p align=\"justify\"> <br /> Research on the correlation between road roughness and road surface condition is very important. Measurement of the roughness of pavement surface is needed in order to assess road performance and enable decision making pertaining to the level of pavement maintenance which may be required to improve service and reduce vehicle operating costs. Pavement roughness measurement is also useful in determining both pavement adequacy for safety and also pavement distress evaluation. <br /> A Merlin and Bump Integrator were used in this research for measuring rcad roughness. MERLIN is an abbreviation which stands for a Machine for Evaluating Roughness Using Low-cost Instrumentation. Research was executed at 5 locations of road in Bandung and 6 repetitions were carried out for each road. The results were analyzed using statistical analysis. The results from both of instrumentations will then be correlated with International Roughness Index, IRI (m/km). <br /> Comparison of the measurement results from both instrumentations shows that measurement of pavement surface roughness using Merlin is very practical. The result that was acquired by Merlin is more accurate than the result acquired by Bump Integrator because Merlin shows the actual road roughness, yet Merlin has a slow working mechanism. Bump Integrator is easier to utilize and can be used in more immediate time period. However the measurement of road <br /> roughness produced by Bump Integrator is very dependent on the vehicle response even more so than from the actual profile of the pavement surface. <br /> From measurement of road roughness known that road residing in good condition with small distress has no influence in roughness measurement but potholling disstress has an effect in roughness measurement. Result of statistical analysis shows that obtained value from various treatment was not differ. Existence of repetitions factor given uniform values. To get uniform data hence correctness of measurement have to be paid attention. Measurement for each trajectory conducted by painted the sign in the form of straight line as long as 500 metres above road surface. Difference of operator in measurement of road roughness given uniform value because both of roughness instrument does not depend on operator.orrelation between IRI result from Merlin and IRI result from Bump Integrator can be made through the repetition factor, the location factor (periphery trajectory and middle trajectory) and the operators (3 operators). The correlation formula which is obtained is therefore : y = 2.1567x - 10.896 with R2 = 0.8879, where x is IRI Bump integrator and y is IRI Merlin.<p align=\"justify\">