【摘要】 根据灰色关联原理,运用灰色关联分析方法研究了不同粒径范围内的钢渣颗粒对掺钢渣水泥各龄期强度的影响.结果表明:钢渣粉中不同粒径范围内的颗粒对水泥不同龄期抗折、抗压强度的贡献不同,其中10.0~19.9μm范围的颗粒与各龄期强度的关联度均最大,且均为正关联,是强度的关键因子;小于5.0μm和大于45.7μm的颗粒与强度的关联度均较小;而大于30.2μm的颗粒与各龄期强度均为负关联,对强度有不利的影响.在实验条件下,可以确定钢渣的最佳粉磨时间为30 min,其比表面积为431.5 m2/kg.更多还原

【Abstract】 The influence of the particle size distribution of steel making slag(SMS)on the strength of relevant cements at different ages was investigated with the method of gray correlation analysis.Results showed that,the compressive and flexural strength of cement at different ages were affected obviously by the particle properties of SMS.The mass fraction of 10.0～19.9 μm particles had a maximum effect on the strength of cement at all ages,and the fraction arange of greater than 45.7 μm and less than 5.0 μm particles had a minimum effect on the strength of cement.The mass fraction arange of less than 30.2 μm and greater than 30.2 μm SMS particles had different polarity of grey correlation with cement strength,and consequently had positive and negative effect on the cement strength,respectively.Therefore,the optimum grinding time of SMS could be ascertained to be about 30 minutes in this condition,and its specific surface area was about 431.5 m2/kg.更多还原