Mechanical Properties of Self-Flowing Concrete
Jin-Kuen Kim and Sang-Hun Han
Appears on pages(s):
Compactability; creep properties; fly ash; mechanical properties;
In this study, the properties of self-flowing concrete, of which flow was more than 60 cm, containing fly ash were experimentally investigated and compared with those of ordinary concrete. Flow test, slump test and setting time test on five types of self-flowing and three types of ordinary concrete mixtures were carried out to obtain the properties for flowability and workability of fresh concrete. The mechanical properties of hardened concrete were also investigated in terms of compressive strength, splitting tensile strength, modulus of elasticity, creep and drying shrinkage. In fresh concrete, it was found that self-flowing concrete had excellent workability and flowability compared with ordinary concrete. Self-flowing concrete also had good mechanical properties at both early and late ages with compressive strength reaching as high as 40 MPa at 28 days. The creep of self-flowing concrete investigated was greater than that of ordinary concrete at early ages, and drying shrinkage was much higher.