钱有贵,朱艳梅,孙青.不同颗粒组成粉煤灰对混凝土性能的影响[J].水泥工程,2015,28(3):16-20 |
不同颗粒组成粉煤灰对混凝土性能的影响 |
Effect of different particles of fly ash on the performance of concrete |
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DOI:10.13697/j.cnki.32-1449/tu.2015.03.004 |
中文关键词: 粉煤灰颗粒组成 调整胶凝材料颗粒级配 改善工作性能 |
英文关键词: composition of fly ash particles adjust the distribution of size of cementitious material improve working performance |
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中文摘要: |
适当增加含粗颗粒的粉煤灰含量,可以调整胶凝材料颗粒,并能可以改善混凝土的流动性能,但有可能使28 d强度降低;掺用时应兼顾适应性和强度的关系,寻求合理的控制参数。但从远龄期强度看,掺用粉煤灰的混凝土90 d后仍有继续增长的趋势,而且较粗的粉煤灰增长趋势更强劲些,表现出高耐久性的优势。 |
英文摘要: |
Rightly increasing the content of coarse particle and adjusting the particle composition of cementitious material can improve the flow property of concrete , but it may reduce the strength of 28 d;The relationship between flexibility and strength should be considered, then seeking for reasonable control parameters. However, the concrete of fly ash still have the trend continuing to grow after 90 d from the strength of the old age. And the growth trend of coarse fly ash is more stronger and it shows the advantages of improving durability. |
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