| 致密堆积混凝土孔结构与电通量研究 |
| Study on Pore Structure of Dense Packed Concrete and Electric Flux |
| 投稿时间：2012-11-01 |
| 中文关键词:压汞法 致密堆积 最可几孔径 孔隙率 分形维数 |
| 英文关键词:mercury intrusion method dense packed most probable pore diameter porosity fractal dimension |
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| 中文摘要: |
| 以混凝土抗氯离子渗透为主要研究目的，应用致密堆积理论拌制混凝土试件并与基准混凝土为对比参照，采用压汞法测试不同水胶比和水泥浆富余系数的致密堆积混凝土的孔结构，依据ASTM C1202—97标准测试致密堆积混凝土的电通量，同时对基准混凝土的孔结构和电通量进行测试并比较，研究孔结构对电通量的影响。结果表明：电通量受多种因素的共同影响,其中致密堆积结构、致密堆积混凝土的最可几孔径、通孔孔隙率及孔径分形维数对氯离子扩散有较显著的影响。 |
| 英文摘要: |
| The resistance to permeability of concretes anti chloride is researched in this paper. The concrete specimens that are mixed according to the dense packed theory and the controlled concrete is also mixed for comparison reference. The pore structure of dense packed concrete which are different in water binder ratio and cement grout surplus rate is tested by adopting the mercury intrusion method. The electric flux of dense packed concrete is tested according to the standard of ASTM C1202 97. The pore structure, the electric flux of controlled concrete are tested and compared with the dense packed concrete. Then the influences of pore structure to electric flux are studied. The results show that the electric flux is affected by the combinations varieties of factors. The structure of dense packed concrete, the most probable pore diameter, the via hole porosity, and the pore diameter fractal dimension of dense packed concrete have a significant effect on the diffusion of Chloride. |
| 张玉喜,高振国.致密堆积混凝土孔结构与电通量研究[J].石家庄铁道大学学报(自然科学版),2012,(4):91-95. |
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