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| 轻集料颗粒群特征对混凝土力学性能的影响 | |
| 引用本文： | 张雄,周云,张永娟,郑雯.轻集料颗粒群特征对混凝土力学性能的影响[J].同济大学学报(自然科学版),2010,38(7):1052-1057. |
| 作者姓名： | 张雄 周云 张永娟 郑雯 |
| 作者单位： | 1. 同济大学,先进土木工程材料教育部重点实验室,上海,200092 2. 同济大学,先进土木工程材料教育部重点实验室,上海,200092;上海建工(集团)总公司技术中心,上海,200083 3. 同济建设工程质量检测站,上海,200092 |
| 基金项目： | 国家"十一五"科技支撑计划资助项目 |
| 摘 要： | 运用数字图像处理技术研究轻集料的颗粒群特征,采用多种参数表征轻集料颗粒群的粒度和粒形特征.在此基础上,通过灰色关联分析,研究轻集料颗粒群特征对混凝土力学性能的影响.结果表明,当轻集料颗粒群比表面积在520 m2·m-3以上并且颗粒长宽比低于1.34时,所配制的轻集料混凝土能同时达到较高的抗压强度和抗折强度.这为高性能轻集料混凝土的配制提供了依据. |
| 关 键 词： | 轻集料 颗粒群特征 力学性能 数字图像处理技术 灰色关联分析 |
| 收稿时间： | 4/14/2009 4:55:01 PM |
| 修稿时间： | 5/26/2010 8:55:54 AM |
Effect of Characteristics of Particle Group of Lightweight Aggregate on Mechanical Properties of Lightweight Concrete |
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| ZHANG Xiong,ZHOU Yun,ZHANG Yongjuan and ZHENG Wen.Effect of Characteristics of Particle Group of Lightweight Aggregate on Mechanical Properties of Lightweight Concrete[J].Journal of Tongji University(Natural Science),2010,38(7):1052-1057. | |
| Authors: | ZHANG Xiong ZHOU Yun ZHANG Yongjuan and ZHENG Wen |
| Abstract: | Digital image processing was used to measure the characteristics of particle group of lightweight aggregate,and multiple parameters were adapted to characterize the characteristic sizes.The effect of characteristics of particle group of lightweight aggregates on mechanical properties of lightweight concrete was then analyzed with grey correlation analysis method.Lightweight concrete of both high compressive strength and high flexural strength could be made with lightweight aggregates of specific surface area higher than 520 m2·m-3 and aspect of particle group lower than 1.34 as well.The results provide a scientific basis for choosing lightweight aggregates when making lightweight concrete. |
| Keywords: | lightweight aggregate characteristics of particle group mechanical properties digital image processing grey correlation analysis method |
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