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| 摘要: |
| 采用NT BUILD492方法测定了高强混凝土的Cl-扩散系数,研究了石灰石粉、粉煤灰单掺以及粉煤灰和石灰石粉双掺对高强混凝土Cl-扩散性能的影响.结果表明,随着石灰石粉单掺掺量的增加,混凝土28 d强度下降,混凝土抗Cl-扩散能力降低;在石灰石粉高强混凝土中掺入粉煤灰,能有效提高其抗Cl-扩散能力,提高其28 d抗压强度. |
| 关键词: 石灰石粉,粉煤灰,Cl-扩散系数 |
| DOI： |
| 分类号:TU528.31 |
| 基金项目:国家自然科学基金 |
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| Chloride Diffusivities of High Strength Concrete with Fly Ash and Ground Limestone |
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XIAO Jia WANG Yong-he DENG De-hua CHEN Lei
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| Abstract: |
| The influences of the addition of ground limestone,fly ash and the mixed addition of ground limestone and fly ash on the chloride diffusivities of the high strength concrete are studied by using NT BUILD 492 method.The experimental results indicated that the 28 d strength and the resistance to chloride permeability of concrete decrease with increasing the content of the ground limestone.The resistance to chloride permeability and 28 d compressive strength of concrete with ground limestone could be effectively improved by the addition of fly ash. |
| Key words: ground limestone,fly ash,Cl~-diffusion coefficient |
