| 利用砖混建筑废弃物制备再生混凝土的性能研究 |
| |
| 引用本文： | 张献蒙,刘旭,柏彬,彭千,冀韦伊. 利用砖混建筑废弃物制备再生混凝土的性能研究[J]. 硅酸盐通报, 2021, 40(8): 2680-2686 |
| |
| 作者姓名： | 张献蒙 刘旭 柏彬 彭千 冀韦伊 |
| |
| 作者单位： | 国网江苏省电力工程咨询有限公司,南京 210008;南京航空航天大学民航学院,南京 210016 |
| |
| 基金项目： | 国网江苏省电力工程咨询有限公司2020年自主科技项目(J202008) |
| |
| 摘 要： | 由砖混建筑废弃物制备的再生粗骨料通常含有部分碎砖粗骨料.为研究碎砖含量对混凝土性能的影响,将再生混凝土粗骨料和碎砖粗骨料按不同比例(体积分数)混合制备混合型再生粗骨料,并以30％的取代率取代天然骨料浇筑混凝土试块进行试验研究.研究结果表明:混凝土破坏时,天然粗骨料沿粗骨料与砂浆之间的界面过渡区断裂失效,而碎砖粗骨料则是...
|
| 关 键 词： | 混合型再生粗骨料 混凝土 抗氯离子渗透 立方体抗压强度 抗盐冻性能 |
| 收稿时间： | 2021-03-11 |
Research on Properties of Recycled Concrete Prepared with Brick and Concrete Construction Waste |
| |
| ZHANG Xianmeng,LIU Xu,BAI Bin,PENG Qian,JI Weiyi. Research on Properties of Recycled Concrete Prepared with Brick and Concrete Construction Waste[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(8): 2680-2686 |
| |
| Authors: | ZHANG Xianmeng LIU Xu BAI Bin PENG Qian JI Weiyi |
| |
| Affiliation: | 1. State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd., Nanjing 210008, China;2. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| Abstract: | Recycled coarse aggregate prepared from brick and concrete construction waste usually contains part of the brick aggregate. In order to study the failure mode and the influence of brick content on the properties of mixed recycled coarse aggregate concrete, the recycled concrete aggregate and brick aggregate were mixed in various proportions (volume fraction) to prepare mixed recycled aggregate, and the natural aggregate was replaced by mixed recycled aggregate in 30% to produce concrete specimens for test. The experimental results indicate that the natural aggregate in mixed recycled aggregate concrete fails along the interface transition zone between the aggregate and the mortar, while the recycled brick coarse aggregate is fractured through the aggregate. When the brick content is less than 18%, there is no obvious effect on compressive strength and resistance of chloride penetration, and once the brick content is more than 18%, compressive strength and resistance of chloride penetration decrease obviously. The higher the content of brick is, the worse the salt frost resistance of concrete is. When the brick content is constant, the higher the water cement ratio is, the smaller the adverse effect of recycled brick coarse aggregate on the compressive strength of concrete. |
| |
| Keywords: | mixed recycled coarse aggregate concrete chloride penetration resistance cube compressive strength salt frost resistance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《硅酸盐通报》浏览原始摘要信息 |
|
点击此处可从《硅酸盐通报》下载免费的PDF全文 |
|
