公开(公告)号：US20230339810A1

公开(公告)日：2023-10-26

申请号：US18005596

申请日：2021-03-31

Applicant: SUMITOMO MITSUI CONSTRUCTION CO., LTD.

Inventor： Taku MATSUDA ,  Akio KASUGA ,  Ryo SAKAMOTO

IPC: C04B20/00 ,  C04B18/06

CPC classification number: C04B20/0076 ,  C04B18/067

Abstract: The present invention aims at providing a composition containing aggregate, binder, and water that can achieve a higher degree of both flowability in the fresh state and a limitation of autogenous shrinkage. A composition of the present invention contains binder, aggregate, and water, wherein the aggregate contains: small-diameter aggregate classified into particle diameters of 300 μm or more and less than 1.18 mm; medium-diameter aggregate classified into particle diameters of 1.18 mm or more and less than 4.75 mm; and large-diameter aggregate classified into particle diameters of 4.75 mm or more and 5 mm or less; wherein a ratio of volume of water to a sum of volume of the binder and volume of aggregate having particle diameters of 5 mm or less is 15% or more and 26% or less, and the small-diameter aggregate, the medium-diameter aggregate, and the large-diameter aggregate each have a BET specific surface area of 0.4 (m2/g) or less.