Development and Construction Record on High-Strength Concrete with the Compressive Strength Exceeding 150MPa

摘要

In this study, concretes with a compressive strength exceeding 150 MPa were produced using mixers at a ready-mixed concrete plant. Tests were conducted on the production method and workability of these concretes and their strength development in mock-up columns, in winter and summer. Based on the results of these tests, concretes with a compressive strength exceeding 150 MPa were used for the construction of a high-rise building. Concretes with a compressive strength exceeding 150 MPa were produced using a binder comprised of ordinary portland cement, slag gypsum and silica fume. The results of quality control tests for unit water content, slump flow, air content and compressive strength showed that concretes with compressive strength exceeding 150 MPa were produced and placed to a consistent quality.