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EFFECTIVENESS OF BASE TYPE ON THE PERFORMANCE OF PCC PAVEMENT ON ERI/LOR 2
INTERIM REPORT FOR THE PROJECT TITLED: CONTINUED MONITORING OF INSTRUMENTED PAVEMENT IN OHIO
| 题名： | EFFECTIVENESS OF BASE TYPE ON THE PERFORMANCE OF PCC PAVEMENT ON ERI/LOR 2 INTERIM REPORT FOR THE PROJECT TITLED: CONTINUED MONITORING OF INSTRUMENTED PAVEMENT IN OHIO |
| 作者： | Shad Sargand |
| 关键词： | bases, curling, cracks, concrete pavement, Portland Cement Concrete |
| 摘要： | This interim report discusses the current status of the ERI / LOR 2 research project that is investigating the effects of various base materials and design features on the performance of Portland concrete cement pavement In 1990, rehabilitation of the initial project begun in 1974 was undertaken through the construction of additional test pavements in the westbound lanes of SR 2 between Station 1835+10 in Eric County and Station 90 +23 in Lorain County. Six base types and two aggregate sources were used in the new test sections. One of the aggregate base sources, #57 from Martin-Marietta in Woodville, Ohio, was considered resistant to D-cracking. The other, #57 from Sandusky Crushed Stone in Parkertown, Ohio, was considered susceptible to D-cracking. The six bases tested included ODOT 304,310, 3071A, 307NJ, and asphalt and cement-treated free draining bases. Nondestructive testing was performed in June and August 1999. Falling Weight Deflectrometer (FWD) tests were conducted to determine load transfer on the test sections. Cracks in slabs were also evaluated through inspection and taking concrete cores. These core samples indicated that most of the cracks were initiated at the pavement surface and propagated downward. No D-cracking has been observed in the test sections. An extensive series of laboratory tests has also been completed to determine resilient modulus and the strength of each base type. To date, the sections with bases 307NJ and CTFDB are performing poorly and have developed a substantial number of cracks. The ATFD base is performing the best of the test bases. Additional monitoring is needed to assess the overall performance of each base type and to address potential D-cracking. |
| 报告类型： | 科技报告 |
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