BLEND DESIGN METHOD FOR ASPHALT MIXTURE, METHOD FOR MANUFACTURING ASPHALT MIXTURE, AND ASPHALT MIXTURE

摘要

Provided is technology that makes it possible for an asphalt mixture to exhibit a suitable void ratio and saturation, even in a case where synthetic calcium carbonate is used.　A blend design method for an asphalt mixture of the present disclosure comprises a determination step in which a ratio r1 (mass%) of a first filler and a ratio r2 (mass%) of a second filler are determined so that a converted specific surface area B0 (m2/g) is 5.00 (m2/g) or less, B0 being calculated on the basis of: a BET specific surface area B1 (m2/g) of the first filler that includes a synthetic calcium carbonate powder; a BET specific surface area B2 (m2/g) of the second filler that includes a calcium carbonate powder produced in a process that is at least different from that of the synthetic calcium carbonate powder; the ratio r1 (mass%) of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler; and the ratio r2 (mass%) of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler.