STRUCTURAL PERFORMANCE EVALUATION OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENT WITH ASPHALTIC CONCRETE SURFACED (AC/CRCP) USING AASHTO 1993 METHOD
Continuously reinforced concrete pavement (CRCP) was first implemented in Indonesia on the Tangerang-Merak Toll Road, particularly in Cikupa-Balaraja Timur section. This pavement structure is then surfaced with asphalt concrete (AC). The objective of this study is to analyze distress condition and s...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/27730 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Continuously reinforced concrete pavement (CRCP) was first implemented in Indonesia on the Tangerang-Merak Toll Road, particularly in Cikupa-Balaraja Timur section. This pavement structure is then surfaced with asphalt concrete (AC). The objective of this study is to analyze distress condition and structural capacity <br />
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of AC/CRCP toward the effects of traffic load using AASTHO 1993 method through condition survey and deflection test. <br />
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The deflection test carried out with falling weight deflectometer (FWD) yielded a very small CRCP elastic modulus value, ECRCP, due to measurable deflection in <br />
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load centers far greater than deflection in other geophon sensors. However, a visual condition survey shows that the AC wearing course is relatively in good condition and there is no sign of water infiltration or reflective distress from CRCP layer. It indicates that a high deflection does not represent the actual condition of the existing pavement so that re-correction of deflection values is required through the simulation of deflection in the load center to obtain a realistic pavement layer modulus and then used in overlay design. Based on simulative deflection, ECRCP analysis showed very high value, that is equal to 21x106 psi at Segment I and 10x106 psi at Segment II. <br />
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The design of overlays to increase the capacity of structures with five years design life indicates that Segment I has not needed more overlay layers, while Segment II has required 4 cm overlay of AC. Meanwhile, restoration to stop or minimize the process of reflective distress is done by dealing with patches and construction joint, as well as crack sealing and partial replacement of AC layers. |
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