Досліджено можливість використання гумату калію як інгібітора технологічного старіння окисненого нафтового бітуму. Для порівняння відібрано зразки гумату калію, що одержували з різної сировини, зокрема торфу та леонардиту. Проведено розрахунок коефіцієнтів старіння та досліджено експлуатаційні властивості модифікованого бітуму як в’яжучого матеріалу для гарячих асфальтобетонних сумішей. Встановлено, що додавання до окисненого нафтового бітуму 3.0 % мас. PH-3 дозволяє сповільнювати процеси технологічного старіння та одержувати асфальтове покриття із кращими характеристиками в порівнянні з покриттям, виготовленим на основі немодифікованого бітуму.
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