首先推导出双组分连续粒径粉体在浆体中的堆积密度公式;通过测定多组粒径分布不同的复合水泥在流动度相同的情况下的需水量,得到不同粒径分布对应着的不同堆积密度.所采用的15种试样的需水量相差4%～10%.用该公式计算上述不同粒径分布的复合水泥浆体的堆积密度及需水量与试验值基本吻合.对公式的适用性进行了验证,说明该公式可以用来模拟诸如水泥和磨细矿粉体系、水泥和粉煤灰体系等胶凝材料细颗粒的堆积密度.
参考文献
| [1] | 吴中伟,廉慧珍.水泥基复合材料科学研究的辩证思维--吴中伟教授学术思想试析[C]//吴中伟.吴中伟院士从事科教工作六十年学术讨论会论文集.北京:中国建材工业出版社,2000:3-7. |
| [2] | 朱宝林,黄新,郭哗,马保国,等.浆体中连续粒径水泥颗粒的堆积密度研究[J].建筑材料学报,2006,9(4);447-452.Zhu Baolin,Huang Xin,Guo Ye,Ma Baoguo,et al.Research on packing density of cement in paste with continuous grain size distribution[J].Journal of Building Materials,2006,9(4):447-452. |
| [3] | 郭晔,朱宝林,黄新,马保国,等.浆体中连续粒径粉体的堆积密度计算方法[J].混凝土,2005(6):20-23.Guo Ye,Zhu Baolin,Huang Xin,Ma Baoguo,et al.A calculation method for packing density of powder in paste with continuous particle size distribution[J].Concrete,2005(6):20-23. |
| [4] | 黄新,袁润章,龙世宗,马保国.水泥粒径分布对水泥石孔结构与强度的影响[J].硅酸盐学报,2004,32(7):888-891.Huang Xin,Yuan Runzhang,Long Shizong,Ma Baoguo.Influence of cement particle size distribution on pore structure and strength of cement paste[J].J Chin Ceram Soc,2004,32 (7):888-891. |
| [5] | Wang Aiqin,Zbeng Chengzhi,Zheng Ningsheng.Study of the influence of the particle size distribution on the properties of cement[J].Cem Concr Res,1997,27(5):685-695. |
| [6] | 张永娟,张雄.水泥-矿粉颗粒级配与流动性能关系的研究[J].同济大学学报,2003,31(9):1059-1063.Zhang Yongjuan,Zhang Xiong.Relationship between particle size distribution of slag-cement system and fluidity of their pastes and mortars[J].Journal of Building Materials,2003,31(9):1059-1063. |
| [7] | Stovall T,Delarrard F,Buil M.Linear packing density model of grain mixtures[J].Powder Technology,1986,48,1-12. |
| [8] | de Larrard F,Sedran T.Optimization of ultra-high-performance concrete by the use of a packing model[J].Cem Concr Res,1994,24,997-1009. |
| [9] | 陈惠苏,孙伟,周焱昌,等.新拌水泥浆体中邻近胶凝材料粒子表面最近间距分布的解析解[J].复合材料学报,2007,24(1):127-134.Chen Huisu,Sun Wei,Zhou Yanchang,et al.Analytical solution of the nearest surface spacing between neighboring binder grains in fresh cement paste[J].Aeta Materiae Compositae Sinica,2007,24(1):127-134. |
| [10] | Wang Aiqin,Zhang Chengzhi,Zhang Ningsheng.The theoretic analysis of the influence of the particle size distribution of cement system on the property of cement[J].Cem Concr Res,1999,29(10):1721-1726, |
| [11] | 中华人民共和国国家质量监督检疫总局.GB/T 1346-2001水泥标准稠度用水量、凝结时间、安定性检验方法[S].北京:中国标准出版社,2001. |
| [12] | 朱宝林,黄新,马保国,朱洪波.大流动度水泥净浆流变参数的测试方法[J].建筑材料学报,2005,8(6):562-564.Zhu Baolin,Huang Xin,Ma Baoguo,Zhu Hongbo.A method to evaluate rheological behavior of cement paste with high fluidity[J].Journal of Building Materials,2005,8(6):562-564. |
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