The effect of aggregate shape upon the strength of structural lightweight-aggregate concrete
The effect of aggregate shape upon the strength of structural lightweight-aggregate concrete
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DOI：
10.1680/macr.1973.25.83.81
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发表时间：
1973-06
影响因子：
2.7
通讯作者：
Andrzej Czuryszkiewicz
中科院分区：
文献类型：
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作者：
Andrzej Czuryszkiewicz
概要 描述了轻骨料（烧结粉煤灰）的形状对轻骨料混凝土抗压强度的影响。轻骨料的有效强度通过 Bache-Christensen 模型外推计算。结果表明：（a）轻骨料混凝土的抗压强度取决于骨料颗粒的形状——圆形骨料（n=0·40）的混凝土的抗压强度比长形骨料（长厚比4·0）的混凝土的抗压强度高出约6～8N/mm2； (b) 轻骨料的有效强度取决于骨料颗粒的形状——对于长度/厚度比分别为 4 和 2 的情况，所用圆形骨料颗粒的强度约为 25·0 N/mm2，细长骨料颗粒的强度约为 17·5 N/mm2 和 20·0 N/mm2。
Synopsis The influence of the shape of a lightweight aggregate (a sintered fly-ash) upon the compressive strength of lightweight-aggregate concrete is described. The effective strength of the lightweight aggregate was calculated by extrapolation from the Bache-Christensen model. It is shown that: (a) the compressive strength of lightweight-aggregate concrete depends upon the shape of the aggregate particles—the concrete tested with rounded aggregate (n = 0·40) had a compressive strength about 6 to 8 N/mm2 greater than those with elongated form (length/thickness ratio 4·0); (b) the effective strength of lightweight aggregate depends upon the shape of the aggregate particles—the rounded aggregate particles used had a strength of approximately 25·0 N/mm2 and the elongated had strengths of approximately 17·5 N/mm2 and 20·0 N/mm2 for length/thickness ratios of 4 and 2 respectively.