Other materials, such as recycled polymers (e.g., rubber tyres), may be added to the bitumen to modify its properties according to the application for which the bitumen is ultimately intended.
ˈʌðɚ mətˈɪɹiəlz, sˈʌtʃ ɐz ɹᵻsˈaɪkəld pˈɑːlɪmɚz ˈiː.dʒˈiː., ɹˈʌbɚ tˈaɪɚz, mˈeɪ biː ˈædᵻd tə ðə bɪtˈuːmɛn tə mˈɑːdᵻfˌaɪ ɪts pɹˈɑːpɚɾiz ɐkˈoːɹdɪŋ tə ðɪ ˌæplɪkˈeɪʃən fɔːɹ wˌɪtʃ ðə bɪtˈuːmɛn ɪz ˈʌltᵻmətli ɪntˈɛndᵻd.