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| 再生粗骨料混凝土抗冻耐久性试验研究 | |
| 引用本文： | 陈爱玖,王静,章青.再生粗骨料混凝土抗冻耐久性试验研究[J].新型建筑材料,2008,35(12). |
| 作者姓名： | 陈爱玖 王静 章青 |
| 作者单位： | 1. 河海大学工程力学系,江苏,南京,210098;华北水利水电学院土木与交通学院,河南,郑州,450011 2. 华北水利水电学院土木与交通学院,河南,郑州,450011 3. 河海大学工程力学系,江苏,南京,210098 |
| 基金项目： | 国家自然科学基金，河南省郑州市科技攻关计划 |
| 摘 要： | 采用正交试验分析再生粗骨料、聚丙烯纤维和引气减水剂掺量对再生混凝士抗冻耐久性的影响，结果表明，引气减水剂是影响抗冻性能的重要因素。再生粗骨料掺量70％、聚丙烯纤维掺量0．7kg／m^3、引气减水剂掺量0．6％的配合比，可使设计强度为C30的再生混凝土达到F250以上的抗冻等级。提出将饱和面干吸水增长率作为评判再生混凝土抗冻性能的技术指标，它与相对动弹性模量一样，可以反应再生混凝土受冻融破坏的程度。 |
| 关 键 词： | 再生粗骨料 再生混凝土 抗冻性 评判指标 |
Experimental study on frost durability of reclaimed coarse aggregate concrete |
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| CHEN Aijiu,WANG Jing,ZHANG Qing.Experimental study on frost durability of reclaimed coarse aggregate concrete[J].New Building Materials,2008,35(12). | |
| Authors: | CHEN Aijiu WANG Jing ZHANG Qing |
| Affiliation: | CHEN Aijiu1,2,WANG Jing2,ZHANG Qing1 (1.Department of Engineering Mechanics,Hehai University,Nanjing 210098,Jiangsu,China,2.School of Civil Engineering & Communication,North China University of Water Conservancy , Hydroelectric Power,Zhengzhou 450011,Henan,China) |
| Abstract: | Effect of reclaimed coarse aggregate,polypropylene fiber and air entraining and water-reducing agent adding amount on frost resistance durability of reclaimed aggregate concrete (RAC)is analyzed by orthogonal experiment. The results indicate that air entraining and water-reducing agent is an important factor affecting the frost resistance. The mixing proportion of 70% reclaimed coarse aggregate,0.7 kg/m3 polypropylene fiber and 0.6% air entraining and water-reducing agent can make design strength C30 RAC re... |
| Keywords: | reclaimed coarse aggregate reclaimed concrete frost resistance judgment index |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |