| 粗骨料颗粒堆积简化计算模型的研究 |
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| 引用本文： | 姜曼,张雄,张永娟,彭亦博. 粗骨料颗粒堆积简化计算模型的研究[J]. 粉煤灰综合利用, 2012, 0(1): 9-14 |
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| 作者姓名： | 姜曼 张雄 张永娟 彭亦博 |
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| 作者单位： | 同济大学建筑材料研究所;同济大学先进土木工程材料教育部重点实验室;昆山市建设工程质量检测中心 |
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| 摘 要： | 提出了一种粗骨料颗粒堆积简化计算模型。此模型将粗骨料颗粒特征化为椭圆形颗粒,利用定量体视学原理采集粗骨料颗粒的形状特征参数,建立了骨料颗粒的堆积法则,设计了可以快速计算其堆积密度的计算方法,得到了粗骨料实际堆积密度PR与虚拟堆积密度PV的修正公式PR=0.896PV＋8.697。经验证,修正后的虚拟堆积密度与实际堆积密度的平均相对误差仅为0.32%,准确度较高。可利用此模型计算出的骨料堆积空隙率,进行混凝土配合比设计。
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| 关 键 词： | 粗骨料堆积 椭球形颗粒 简化计算模型 堆积密度 |
Research on the Simplified Computation Model of the Coarse Aggregate Particle Packing |
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| JIANG Man,ZHANG Xiong,ZHANG Yong-juan,PENG Yi-bo. Research on the Simplified Computation Model of the Coarse Aggregate Particle Packing[J]. Fly Ash Comprehensive Utilization, 2012, 0(1): 9-14 |
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| Authors: | JIANG Man ZHANG Xiong ZHANG Yong-juan PENG Yi-bo |
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| Affiliation: | 1,3(1.Institute of Building Materials,Tongji University,Shanghai 201804,China;2.Key Laboratory of Advanced Civil Engineering Materials of Education,Tongji University,Shanghai 201804,China;3.Kunshan Construct Engineering Quality Testing Center,Jiangsu 215337,China) |
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| Abstract: | A simplified computation model of aggregate packing was built with the coarse aggregate being simulated as ellipse particle.The packing rule had been established and the simplified method to calculate the packing density had been designed The packing density can be calculated very fast after gathering the shape characteristic parameters from the picture of the aggregate based on the quantitative stereology.The model through which a modified formula ρR=0.896ρV+8.697 was found out,where the ρR was real packing density and the ρV was virtual packing density.The modified model was proved to be accurate with a average relative error of 0.32% between the real packing density and the modified virtual packing density. |
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| Keywords: | coarse aggregate packing ellipse particle simplified computation model packing density |
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