长沙理工大学学报：自然科学版2012，Vol.9Issue(1)：17-22,6.
粉煤灰高强轻骨料混凝土抗氯离子渗透及护筋性
Chloride-permeation resistance and the steel protection property of fly ash high-strength lightweight aggregate concrete
摘要
Abstract
Cement has been equivalently replaced by different fineness fly ash, and fly ash high-strength lightweight aggregate concrete have been prepared. The chloride-permeation resistance and the steel protection property of concrete have been tested by the testing method of ASTM rapid chloride permeability and electrochemical technology, compared with that of the reference concrete. The test results show that the chloride-permeation re- sistance and the steel protection property of lightweight aggregate concrete are enhanced and higher than that of the reference sample with the increased of the fineness of fly ash, when the content of fly ash are same. Meanwhile, when grade Ⅱ fly ash is added, the chloride- permeation resistance of concrete reduces with the increase of fly ash content, and the best chloride-permeation resistance of concrete can be reached when ultra-fine fly ash is addedand its content is 20~/4, and the chloride-permeation resistance of concrete has a little change when grade I fly ash is added, compared with the reference sample, but it would decline when the content of grade I fly ash reach 30%. On the other hand, the similar trend of changes, about the chloride-permeation resistance and the steel protection property of con- crete, can be found from tests, and the steel protection effect is improved with the increase of the chloride-permeation resistance.关键词
粉煤灰/轻骨料混凝土/抗氯离子渗透/护筋性/细度Key words
fly ash/lightweight concrete/chloride-permeation resistance/steel protectionproperty/fineness分类
建筑与水利引用本文复制引用
高英力,刘赫,李柯,程领..粉煤灰高强轻骨料混凝土抗氯离子渗透及护筋性[J].长沙理工大学学报：自然科学版,2012,9(1):17-22,6.基金项目
高等学校博士学科点专项科研基金资助项目 （）
湖南省教育厅科研资助项目 （）
中国博士后基金特别资助项目 （）
国家级大学生创新性实验计划资助项目 （）
