| 水工全级配与湿筛混凝土强度关系的研究 |
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| 引用本文： | 郑丹,韩巍巍,张寅. 水工全级配与湿筛混凝土强度关系的研究[J]. 水利与建筑工程学报, 2011, 9(5): 10-14,59 |
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| 作者姓名： | 郑丹 韩巍巍 张寅 |
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| 作者单位： | 1. 重庆交通大学河海学院,重庆,400074
2. 北京中交水运规划设计院有限公司,北京,100007 |
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| 基金项目： | 国家自然科学基金资助项目(50809079) |
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| 摘 要： | 在分析总结现有试验结果和已有混凝土尺寸效应模型的基础上,认为影响全级配和湿筛混凝土强度的主要因素是控制性裂纹的长度,并从脆性材料细观破坏机理出发,分析了混凝土在轴拉、劈拉和轴压荷载下的破坏模式,得到了不同形式荷载下的混凝土内控制性裂纹长度,研究了最大骨料粒径对混凝土强度的影响规律。研究表明,随着最大骨料粒径的增加,混凝...
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| 关 键 词： | 水工混凝土 全级配 强度 抗拉 抗压 |
Research on Strength Ratio of Full-grade and Wet-sieving Hydraulic Concrete |
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| ZHENG Dan,ZHANG Yin. Research on Strength Ratio of Full-grade and Wet-sieving Hydraulic Concrete[J]. Journal of Water Resources Architectural Engineering, 2011, 9(5): 10-14,59 |
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| Authors: | ZHENG Dan ZHANG Yin |
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| Affiliation: | ZHENG Dan,ZHANG Yin(1.College of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China,2.China Communication Planning & Design Institute for Water Transportation,Co.,Ltd.,Bejing 100007,China) |
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| Abstract: | After concluding the existed experimental results and size effect model of concrete,the main difference between the tensile and compressive strength of full-grade and wet-sieving concrete is assumed here which is the dominant crack size.At the same time,by analyzing the crack propagation process of concrete under the axial tension,splitting tension and axial compression,the dominant crack size in concrete is determined based on the microscopic failure mechanism of concrete,and the influence of maximum aggre... |
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| Keywords: | hydraulic concrete full-grade strength tensile resistance compressive resistance |
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