Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials
This paper compares the physical and mechanical properties of sleeve grouting materials with different admixtures under freeze-thaw action by means of control variable method,studies the effects of different admixtures and different contents on the apparent morphology,mass loss and strength loss of...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.12.011 |
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| _version_ | 1841535619859218432 |
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| author | WU Zhaoyue ZHU Haiqing |
| author_facet | WU Zhaoyue ZHU Haiqing |
| author_sort | WU Zhaoyue |
| collection | DOAJ |
| description | This paper compares the physical and mechanical properties of sleeve grouting materials with different admixtures under freeze-thaw action by means of control variable method,studies the effects of different admixtures and different contents on the apparent morphology,mass loss and strength loss of sleeve grouting materials under freeze-thaw action,and further analyzes the change of species,quantity and morphology of hydration products in freeze-thaw cycle by SEM (scanning electron microscope).The results show that:After 120 freeze-thaw cycles,the mass loss of mortar specimens with admixtures is less than 2%,which is lagged compared with the compressive strength loss;Based on the gray correlation analysis,the impact of expansion agent on the mechanical properties of mortar specimens under different freeze-thaw cycles is the lowest.However,with the addition of defoaming agent,the physical and mechanical properties of mortar specimens are more sensitive to freeze-thaw damage,and the sensitivity will increase with the increase of defoaming agent contents;From the microstructure analysis,the addition of expansion agent can improve the stability of internal C-S-H gel system after freeze-thaw action. |
| format | Article |
| id | doaj-art-541a57e5ce5d453db928fca8ba2f127b |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-541a57e5ce5d453db928fca8ba2f127b2025-01-15T02:30:44ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147650642Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting MaterialsWU ZhaoyueZHU HaiqingThis paper compares the physical and mechanical properties of sleeve grouting materials with different admixtures under freeze-thaw action by means of control variable method,studies the effects of different admixtures and different contents on the apparent morphology,mass loss and strength loss of sleeve grouting materials under freeze-thaw action,and further analyzes the change of species,quantity and morphology of hydration products in freeze-thaw cycle by SEM (scanning electron microscope).The results show that:After 120 freeze-thaw cycles,the mass loss of mortar specimens with admixtures is less than 2%,which is lagged compared with the compressive strength loss;Based on the gray correlation analysis,the impact of expansion agent on the mechanical properties of mortar specimens under different freeze-thaw cycles is the lowest.However,with the addition of defoaming agent,the physical and mechanical properties of mortar specimens are more sensitive to freeze-thaw damage,and the sensitivity will increase with the increase of defoaming agent contents;From the microstructure analysis,the addition of expansion agent can improve the stability of internal C-S-H gel system after freeze-thaw action.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.12.011sleeve grouting materialadmixturefrost resistancegrey correlationmicrostructure |
| spellingShingle | WU Zhaoyue ZHU Haiqing Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials Renmin Zhujiang sleeve grouting material admixture frost resistance grey correlation microstructure |
| title | Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials |
| title_full | Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials |
| title_fullStr | Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials |
| title_full_unstemmed | Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials |
| title_short | Effect of Admixture on Freeze-thaw Damage of Sleeve Grouting Materials |
| title_sort | effect of admixture on freeze thaw damage of sleeve grouting materials |
| topic | sleeve grouting material admixture frost resistance grey correlation microstructure |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.12.011 |
| work_keys_str_mv | AT wuzhaoyue effectofadmixtureonfreezethawdamageofsleevegroutingmaterials AT zhuhaiqing effectofadmixtureonfreezethawdamageofsleevegroutingmaterials |