@article{oai:muroran-it.repo.nii.ac.jp:00009242,
 author = {CHO, Bongsuk and 曺, 俸碩 and CHOI, Hyeonggil and 崔, 亨吉},
 journal = {Construction and Building Materials},
 month = {Oct},
 note = {The Kambara reactor (KR) slag, which is a byproduct generated in the preliminary treatment process of molten iron by a KR mechanical stirring process, is composed of Ca(OH)2, CaCO3 and 2CaO・SiO2. It was confirmed that the alkali stimulus of Ca(OH)2 contained in the KR slag could cause a cement-free binder to harden. However, the strength performance of a GGBFS-based cement-free binder mixed with only the KR slag was very low. The gypsum (CaSO4) is additionally used in order to enhance the strength performance of the GGBFS-KR slag binder. The result showed that the 28-day compressive strength of the GGBFS-KR slag-gypsum binder (GKGB) concrete was similar to that of slag cement. On the other hand, compared to those of slag cement, the drying shrinkage was shown to be 121.8?129.0%, and the cumulate porosity was shown to be 190?208%. These results imply that ettringite, which is a main hydrate of GKGB, is thick and provides the structural stability by forming a frame structure. However, the thicker ettringite, the more pores may be created. In other words, high amounts of ettringite form a porous structure, which has many micro pores so that the porosity and absorption become higher, leading to higher drying shrinkage.},
 pages = {436--443},
 title = {Physical and chemical properties of concrete using GGBFS-KR slag-gypsum binder},
 volume = {123},
 year = {2016},
 yomi = {チェ, ヒョンギル}
}