The change of the aggregate impact strength value after the accelerated weathering tests of different rock.


Özvan A., Erdeve Özvan E., Bor M.

1. International Mersin Symposium (WOSMUS), Mersin, Türkiye, 1 - 03 Kasım 2018, cilt.3, ss.331-339, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 3
  • Basıldığı Şehir: Mersin
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.331-339
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

Natural stones used in construction such as road, concrete etc. are subjected to atmospheric effects such as freezing and thawing, salt crystallization and wetting and drying

cycles which accelerates abrasion. Therefore, wear resistance of natural stone materials is important for selection of suitable materials in engineering projects. For this purpose, different thirteen rock samples were selected and accelerated weathering tests (freezing and thawing and salt crystallization cycles) on these aggregate samples were applied and so thirty-nine samples with different degree of decomposition were obtained. In the final stage, aggregate Impact Value (AIV) were determined of these undeteriorated and deteriorated samples. As a result of the abrasion tests was carried out on these natural rock samples, the effect of deterioration on abrasion was investigated. Consequently, the minimum and maximum loss were determined to be between 19.70% and 59.10%. In almost all cases, the deterioration after salt crystallization test was found to be more detrimental. Therefore, it was observed that as the deterioration affect increases, the abrasion wear resistance of aggregate samples were decreased. When the difference between abrasion wear resistance of deteriorated and undeteriorated samples were compared; the difference was found to be considerably higher for clayey limestone, ignimbrites and travertines because of their physical and chemical properties such as high porosity and mineral resistance.