수축저감제를 사용한 콘크리트의 건조수축 저감 특성 = Reduction Properties of Drying Shrinkage of Concrete Using Shrinkage Reducing Admixture

다국어 초록 (Multilingual Abstract)

In this paper, tests are carried out using the concrete incorporating shrinkage reducing admixture(SRA) to reduce drying shrinkage. According to test results, for fresh concrete properties, increase of SRA content leads to reduce the fluidity and air content sharply. For setting time, use of SRA cause concrete to accelerate setting time. For compressive strength, FA10 concrete(incorporating 10% of fly ash) shows remarkable drop in compressive strength compared to that of plain concrete, meanwhile, slight decrease of compressive strength of BS 20 concrete(incorporating 20% of blast furnace slag) is found with the increase of SRA content. For drying shrinkage, concrete shows decline tendency in drying shrinkage with increase of SRA content. In the scope of this paper, the use of SRA 10% has optimum effects on the concrete properties such as reducing drying shrinkage reasonably as well as enhancing mechanical properties except fluidity.