应用纳米微粉提高混凝土抗渗抗冻性能的试验研究  

Experimental study on improving permeability resistant and frost-resistant properties of concrete with nm level micro-powder

作　　者：杜应吉[1] 韩苏建[1] 姚汝方[1] 李元婷[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院

出　　处：《西北农林科技大学学报（自然科学版）》2004年第7期107-110,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家863计划项目(2002AA2Z4131;2001AA242071)

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1g～3g/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%。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%.

关 键 词：纳米微粉 改性剂 混凝土 抗渗性 抗冻性 

分 类 号：TU502[建筑科学—建筑技术科学] TU528.042