Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash
Fly ash (FA) has been an important ingredient for engineered cementitious composite (ECC) with excellent tensile strain capacity and multiple cracking. Unfortunately, the frost resistance of ECC with high-volume FA has always been a problem. This paper discusses the influence of silica fume (SF) and...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/7987589 |
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| author | Yushi Liu Xiaoming Zhou Chengbo Lv Yingzi Yang Tianan Liu |
| author_facet | Yushi Liu Xiaoming Zhou Chengbo Lv Yingzi Yang Tianan Liu |
| author_sort | Yushi Liu |
| collection | DOAJ |
| description | Fly ash (FA) has been an important ingredient for engineered cementitious composite (ECC) with excellent tensile strain capacity and multiple cracking. Unfortunately, the frost resistance of ECC with high-volume FA has always been a problem. This paper discusses the influence of silica fume (SF) and ground-granulated blast-furnace slag (GGBS) on the frost resistance of ECC with high volume of FA. Four ECC mixtures, ECC (50% FA), ECC (70% FA), ECC (30% FA + 40% SL), and ECC (65% FA + 5% SF), are evaluated by freezing-thawing cycles up to 200 cycles in tap water and sodium chloride solution. The result shows the relative dynamic elastic modulus and mass loss of ECC in sodium chloride solution by freeze-thaw cycles are larger than those in tap water by freeze-thaw cycles. Moreover, the relative dynamic elastic modulus and mass loss of ECC by freeze-thaw cycles increase with FA content increasing. However, the ECC (30% FA + 40% SL) shows a lower relative dynamic elastic modulus and mass loss, but its deflection upon four-point bending test is relatively smaller before and after freeze-thaw cycles. By contrast, the ECC (65% FA + 5% SF) exhibits a significant deflection increase with higher first cracking load, and the toughness increases sharply after freeze-thaw cycles, meaning ECC has good toughness property. |
| format | Article |
| id | doaj-art-6b46199d4e0b4cf6ab290d38d4de8ac8 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-6b46199d4e0b4cf6ab290d38d4de8ac82025-02-03T01:11:13ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/79875897987589Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly AshYushi Liu0Xiaoming Zhou1Chengbo Lv2Yingzi Yang3Tianan Liu4School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaFly ash (FA) has been an important ingredient for engineered cementitious composite (ECC) with excellent tensile strain capacity and multiple cracking. Unfortunately, the frost resistance of ECC with high-volume FA has always been a problem. This paper discusses the influence of silica fume (SF) and ground-granulated blast-furnace slag (GGBS) on the frost resistance of ECC with high volume of FA. Four ECC mixtures, ECC (50% FA), ECC (70% FA), ECC (30% FA + 40% SL), and ECC (65% FA + 5% SF), are evaluated by freezing-thawing cycles up to 200 cycles in tap water and sodium chloride solution. The result shows the relative dynamic elastic modulus and mass loss of ECC in sodium chloride solution by freeze-thaw cycles are larger than those in tap water by freeze-thaw cycles. Moreover, the relative dynamic elastic modulus and mass loss of ECC by freeze-thaw cycles increase with FA content increasing. However, the ECC (30% FA + 40% SL) shows a lower relative dynamic elastic modulus and mass loss, but its deflection upon four-point bending test is relatively smaller before and after freeze-thaw cycles. By contrast, the ECC (65% FA + 5% SF) exhibits a significant deflection increase with higher first cracking load, and the toughness increases sharply after freeze-thaw cycles, meaning ECC has good toughness property.http://dx.doi.org/10.1155/2018/7987589 |
| spellingShingle | Yushi Liu Xiaoming Zhou Chengbo Lv Yingzi Yang Tianan Liu Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash Advances in Civil Engineering |
| title | Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash |
| title_full | Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash |
| title_fullStr | Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash |
| title_full_unstemmed | Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash |
| title_short | Use of Silica Fume and GGBS to Improve Frost Resistance of ECC with High-Volume Fly Ash |
| title_sort | use of silica fume and ggbs to improve frost resistance of ecc with high volume fly ash |
| url | http://dx.doi.org/10.1155/2018/7987589 |
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