Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement
The refining process using an aluminum deoxidizer for fabricating stainless steel generated steel slag (STS-refining slag (SRS)) that contains a large amount of Al2O3 and is a compound of mainly 12CaO·7Al2O3 and 3CaO·Al2O3. When SRS was mixed with slag cement, rapid exothermic reaction occurred in t...
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5893254 |
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| author | Bong Suk Cho Young Cheol Choi |
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| author_sort | Bong Suk Cho |
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| description | The refining process using an aluminum deoxidizer for fabricating stainless steel generated steel slag (STS-refining slag (SRS)) that contains a large amount of Al2O3 and is a compound of mainly 12CaO·7Al2O3 and 3CaO·Al2O3. When SRS was mixed with slag cement, rapid exothermic reaction occurred in the initial phase of hydration. During the hydration of slag cement and SRS, a large quantity of xCaO-yAl2O3-zH2O hydrate was observed. Until 10% weight replacement ratio of SRS to slag cement, the compressive strength was in the same level as in the existing slag cement. However, 20% replacement was accompanied by much strength degradation and high drying shrinkage. When a mixture of SRS and gypsum was added to slag cement, ettringite (3CaO·Al2O3·3CaSO4·32H2O) was actively created in the initial hydration phase. The compressive strength of the OPC-BFS-SRS-gypsum binder at 91 days was 91% of that of slag cement (B50) and was similar to that of OPC (O100). Besides, drying shrinkage was almost half that of slag cement, which indicates excellent performance for shrinkage. In case SRS is adequately used, which is an industrial by-product of the steel-making process, high shrinkage, a basic problem of slag cement, will be mitigated. |
| format | Article |
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| publishDate | 2018-01-01 |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-945f4ed031d24688a8b7949b17473ec42025-02-03T05:53:41ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/58932545893254Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag CementBong Suk Cho0Young Cheol Choi1Environment and Resources Research Group, Research Institute of Industrial Science and Technology, 67 Chengnam-ro, Nam-gu, Pohang, Republic of KoreaDepartment of Civil and Environmental Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of KoreaThe refining process using an aluminum deoxidizer for fabricating stainless steel generated steel slag (STS-refining slag (SRS)) that contains a large amount of Al2O3 and is a compound of mainly 12CaO·7Al2O3 and 3CaO·Al2O3. When SRS was mixed with slag cement, rapid exothermic reaction occurred in the initial phase of hydration. During the hydration of slag cement and SRS, a large quantity of xCaO-yAl2O3-zH2O hydrate was observed. Until 10% weight replacement ratio of SRS to slag cement, the compressive strength was in the same level as in the existing slag cement. However, 20% replacement was accompanied by much strength degradation and high drying shrinkage. When a mixture of SRS and gypsum was added to slag cement, ettringite (3CaO·Al2O3·3CaSO4·32H2O) was actively created in the initial hydration phase. The compressive strength of the OPC-BFS-SRS-gypsum binder at 91 days was 91% of that of slag cement (B50) and was similar to that of OPC (O100). Besides, drying shrinkage was almost half that of slag cement, which indicates excellent performance for shrinkage. In case SRS is adequately used, which is an industrial by-product of the steel-making process, high shrinkage, a basic problem of slag cement, will be mitigated.http://dx.doi.org/10.1155/2018/5893254 |
| spellingShingle | Bong Suk Cho Young Cheol Choi Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement Advances in Materials Science and Engineering |
| title | Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement |
| title_full | Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement |
| title_fullStr | Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement |
| title_full_unstemmed | Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement |
| title_short | Hydration Properties of STS-Refining Slag-Blended Blast Furnace Slag Cement |
| title_sort | hydration properties of sts refining slag blended blast furnace slag cement |
| url | http://dx.doi.org/10.1155/2018/5893254 |
| work_keys_str_mv | AT bongsukcho hydrationpropertiesofstsrefiningslagblendedblastfurnaceslagcement AT youngcheolchoi hydrationpropertiesofstsrefiningslagblendedblastfurnaceslagcement |