Effects of various shape parameters on packing of aggregate particles
Effects of various shape parameters on packing of aggregate particles
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DOI：
10.1680/macr.53.2.91.39505
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发表时间：
2001-04
影响因子：
2.7
通讯作者：
A. Kwan;C. Mora
中科院分区：
文献类型：
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作者：
A. Kwan;C. Mora
所使用的骨料颗粒的形状对所生产的混凝土的性质具有显著影响。一个主要的影响是骨料的堆积密度，它决定了填充骨料颗粒之间空隙所需的水泥浆的量。为了研究集料颗粒的各种形状参数如何影响集料的堆积，采用新开发的数字图像处理技术分析了来自不同来源的不同岩石类型的集料样品的形状特征，并根据英国标准中给出的现有方法测量了它们的堆积密度。骨料样品的堆积密度与形状参数相关，以评估各种形状参数对堆积的影响。从相关性的结果，它被发现，形状因子和凸度比是最重要的形状参数影响的聚集体的堆积。两种替代公式R.
The shape of the aggregate particles used has significant effects on the properties of the concrete produced. One major effect is on the packing density of the aggregate which determines the amount of cement paste needed to fill the voids between the aggregate particles. In order to study how the various shape parameters of aggregate particles would affect the packing of aggregate, aggregate samples of different rock types from different sources have been analysed for their shape characteristics using a newly developed digital image processing technique and their packing densities measured in accordance with an existing method given in the British Standard. The packing densities of the aggregate samples are correlated to the shape parameters to evaluate the effects of the various shape parameters on packing. From the results of the correlation, it is found that the shape factor and the convexity ratio are the most important shape parameters affecting the packing of an aggregate. Two alternative formulas r...