| 摘要: |
| 利用纳米微粉的高化学活性和微粒性，通过混凝土耐久性试验研究，研制新型混凝土改性剂。结果表明，当纳米微粉的掺量为1 g～3 g/kg时，其施工成本与市售外加剂相当，这时混凝土的抗渗等级提高30％，抗冻等级提高50％。 |
| 关键词: 纳米微粉 改性剂；混凝土 抗渗性 抗冻性 |
| DOI： |
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| 基金项目:国家863计划项目(2002AA2Z4131；2001AA242071) |
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| Experimental study on improving permeability resistant and frost-resistant properties of concrete with nm level micro-powder |
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| Abstract: |
| The new property-improved concrete admixture is studied through the experiment on durable properties of concrete utilizing high chemical active property and micro-particle property of nm level micro-powder.The results show that the cost of concrete with a mixing amount of micro-powder between 1 g/kg and 3 g/kg is basically the same as that of concrete with ordinary admixtures and its permeability-resistant level increases by 30% and frost-resistant level by 50%. |
| Key words: nm level micro-powder property-improved admixture concrete permeability-resistant property frost-resistant property |
