1 Ocak 2021 Dergi makalesi Açık Erişim

Celik, Muhammet; Seferoglu, Mehmet Tevfik; Akpinar, Muhammet Vefa

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    <subfield code="a">Performance of AC overlays using geogrids on PCC contraction joints</subfield>
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    <subfield code="a">It is widely known that vertical displacements and strains occur on the joints and these cause defects on the asphalt concrete (AC) overlays on existing Portland cement concrete (PCC) pavements. Various approaches were introduced to minimize these defects. In this study, the effect of joint support formed using the geogrid material with grout mortar on the vertical displacement of PCC and the strain at the bottom of the AC layer. Produced layers were exposed to 1,186,000 Equivalent Single Axle Load (ESAL) in an APT (Accelerated Pavement Test) facility and the results were monitored. According to the obtained results, the use of AC overlay reduces vertical displacement in the PCC by 75%. When geogrid reinforced AC overlay was used, an additional reduction in displacement by 41.2% was achieved. Geogrid reinforcement reduced strain values formed at the bottom of the AC layer from 29.5% to 92.5%. The use of geogrid at joints instead of increasing the thickness of the AC layer from 50 to 80 mm resulted a more significant reduction in both strain and displacement. Besides, the usage of a geogrid interlayer instead of increasing the thickness of the AC layer also provided a significant cost reduction of 57.9% in overall cost.</subfield>
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    <subfield code="u">Gumushane Univ, Dept Civil Engn, Gumushane, Turkey</subfield>
    <subfield code="a">Seferoglu, Mehmet Tevfik</subfield>
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    <subfield code="u">Karadeniz Tech Univ, Dept Civil Engn, Trabzon, Turkey</subfield>
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    <subfield code="u">Yalova Univ, Dept Civil Engn, Yalova, Turkey</subfield>
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    <subfield code="c">2021-01-01</subfield>
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    <subfield code="a">10.1016/j.geotexmem.2021.02.004</subfield>
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