| 粉煤灰及聚羧酸减水剂在压浆料中的应用 |
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| 引用本文： | 黄晓静.粉煤灰及聚羧酸减水剂在压浆料中的应用[J].石家庄铁道学院学报,2011(4):101-104. |
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| 作者姓名： | 黄晓静 |
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| 作者单位： | 中铁二十局集团第四工程有限公司; |
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| 摘 要： | 针对后张法预应力混凝土孔道灌浆中容易出现的质量问题及新桥规的具体要求，提出掺加粉煤灰改善浆体的技术性能。研究了粉煤灰对浆体流动性、稳定性、耐久性和强度发展的影响。经过试验，得出结论：粉煤灰在一定掺量范围内可以改善浆体的流动性、稳定性和耐久性，掺量在30％以内早期强度可以满足规范要求。
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| 关 键 词： | 预应力混凝土 孔道灌浆 压浆料 |
Application of Fly Ash and Polycarboxylate Superplasficizer in Duct Grouting Materials |
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| Huang Xiaojing.Application of Fly Ash and Polycarboxylate Superplasficizer in Duct Grouting Materials[J].Journal of Shijiazhuang Railway Institute,2011(4):101-104. |
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| Authors: | Huang Xiaojing |
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| Institution: | Huang Xiaojing(The No.4 Engineering Company Limited of China Railway 20th Bureau Group Corporation,Qingdao 266061,China) |
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| Abstract: | In this paper,the performance of grouting materials is improved by fly ash and polycarboxylate superplasficizer according to the new bridge specification and in the light of common faults which appear frequently in prestressed concrete with post-tensioning method.The fluidity,stability,durability and strength of grout are studied. |
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| Keywords: | prestressed concrete duct grouting fluidity stability durability strength |
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