Mastic asphalt is a type of asphalt that differs from dense graded asphalt (asphalt concrete) in that it has a higher bitumen (binder) content, usually around 7–10% of the whole aggregate mix, as opposed to rolled asphalt concrete, which has only around 5% asphalt.
mˈæstɪk ˈæsfɔlt ɪz ɐ tˈaɪp ʌv ˈæsfɔlt ðæt dˈɪfɚz fɹʌm dˈɛns ɡɹˈeɪdᵻd ˈæsfɔlt ˈæsfɔlt kˈɑːŋkɹiːt ɪn ðˌɐɾɪt hɐz ɐ hˈaɪɚ bɪtˈuːmɛn bˈaɪndɚ kˈɑːntɛnt, jˈuːʒuːəli ɚɹˈaʊnd sˈɛvən tˈɛn pɚsˈɛnt ʌvðə hˈoʊl ˈæɡɹɪɡˌeɪt mˈɪks, æz əpˈoʊzd tə ɹˈoʊld ˈæsfɔlt kˈɑːŋkɹiːt, wˌɪtʃ hɐz ˈoʊnli ɚɹˈaʊnd fˈaɪv pɚsˈɛnt ˈæsfɔlt.