Sebnem SARGIN KARAHANCER, Ekinhan Eriskin, BUKET ÇAPALI, Mehmet SALTAN, Serdal TERZİ

Investigation of Using Waste Welded Tuff Material as Mineral Filler in Asphalt Concrete

In this paper, the welded tuff waste- known as koyke in Isparta region - was used in the hot mix asphalt (HMA) as mineral filler for reduction of the moisture susceptibility of HMA. Optimum binder content was assessed with Marshall Design Method. First of all, welded tuff was substituted as filler with limestone filler in proportion of 50% and 100%. After that Marshall Stability test was performed on specimens. The results showed that the 50% substitution was more effective than the 100% substitution. Therefore, welded tuff was substituted with limestone filler in proportion of 25%, 50%, 65% and 75%. Next, Indirect Tensile Strength test was practiced on the fabricated specimens and the results were assessed. According to the Indirect Tensile Strength results, welded tuff with 65% was given higher strength than the limestone filler. As a result, it has come up that welded tuff can be used as mineral filler in the hot mix asphalt.

Anahtar Kelimeler:

Moisture susceptibility, Welded tuff; Koyke; Tensile strength ratio

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