| Title |
A Fundamental Study on the Effect of the Mixing Factor Influencing to the Properties of Super-Workable Concrete |
| Abstract |
The study is designed for analyzing the properties of super-workable concrete with the parameters of water contents. S/A ratio(sand/aggregate ratio), superplasticizer kinds, superplasticizer dosage and cement replacement method of pozzolanic admixture and the properties of compressive strength to the hardened concrete. Under the mixing condition W/C 35%, we can obtain good results about flowability, self placeability and segregation resistibility at fresh state condition such as 170kg/m3 of water contents, 50% of S/A ratio, 4% of superplasticizer dosage and 20% of replacing the fly ash into cement contents. Also, in thiscase, the compressive strength of 28 days shows about 300kg/cm2. The naptalen type, compared with melamin type, shoes good results in the effects of admixtures and shows similar results in compressive strength. Also, the use of the pozzlanic admixture such as silica fume, related to the non replacement method, provides good results at the fresh and hardened state. |