Effect of mineral admixtures and repeated loading on chloride migration through concrete附视频

被引：0
|
作者：
Wuman ZHANG Hengjing BA School of Transportation Science and Engineering Beihang University Beijing China School of Civil Engineering Harbin Institute of Technology Harbin China [1 ,2 ,1 ,100191 ,2 ,150006 ]
机构：
来源：
Journal of Zhejiang University-Science A(Applied Physics & Engineering) | 2010年 / 09期
关键词：
D O I：
暂无
中图分类号：
TU528 [混凝土及混凝土制品];
学科分类号：
摘要：
The effect of fly ash (FA) and ground granulated blast furnace slag (GGBFS) on chloride migration through concrete subjected to repeated loading was examined. Portland cement was replaced by three percentages (20%, 30%, and 40%) of mineral admixtures. Five repeated loadings were applied to concrete specimens using a WHY series fully automatic testing machine. The maximum loadings were 40% and 80% of the axial cylinder compressive strength (f′c). Chloride migration through concretes was evaluated using the rapid chloride migration test and the chloride concentration in the anode chamber was measured. The results showed that the replacement percentages of mineral admixtures, the curing time and repeated loading had a significant effect on chloride migration through concrete. The transport number of chloride through concrete cured for 28 d increased with increasing FA replacement and markedly decreased with extension of the curing time. 20% and 30% GGBFS replacement decreased the transport number of chloride through concrete, but 40% GGBFS replacement increased the transport number. Five repeated loadings at 40% or 80% f′c increased the transport number of chloride for all mixes.
引用
收藏
页码：683 / 690
页数：8
相关论文
共 30 条
  • [1] 矿渣微粉在水泥混凝土中应用的概述
    蒋家奋
    [J]. 混凝土与水泥制品, 2002, (03) : 3 - 6
  • [2] Influence of mineral admixtures on compressive strength; gas permeability and carbonation of high performance concrete[J] Hui-sheng Shi;Bi-wan Xu;Xiao-chen Zhou Construction and Building Materials 2008,
  • [3] Effect of mineral admixtures and curing periods on shrinkage and cracking age under restrained condition[J] Sontaya Tongaroonsri;Somnuk Tangtermsirikul Construction and Building Materials 2008,
  • [4] Chloride-induced corrosion products of steel in cracked-concrete subjected to different loading conditions[J] Shahzma J. Jaffer;Carolyn M. Hansson Cement and Concrete Research 2008,
  • [5] Rheological behavior of high performance concrete with mineral admixtures and their blending[J] Aminul Islam Laskar;Sudip Talukdar Construction and Building Materials 2007,
  • [6] Durability of a multiscale fibre reinforced cement composite in aggressive environment under service load[J] Edouard Parant;Rossi Pierre;Fabrice Le Maou Cement and Concrete Research 2007,
  • [7] Effects and interactions of temperature and stress-level related damage on permeability of concrete[J] Marta Choinska;Abdelhafid Khelidj;George Chatzigeorgiou;Gilles Pijaudier-Cabot Cement and Concrete Research 2006,
  • [8] Influence of fly ash fineness on the chloride penetration of concrete[J] P. Chindaprasirt;C. Chotithanorm;H.T. Cao;V. Sirivivatnanon Construction and Building Materials 2005,
  • [9] Frost attack resistance and steel bar corrosion of antiwashout underwater concrete containing mineral admixtures[J] Han-Young Moon;Kook-Jae Shin Construction and Building Materials 2005,
  • [10] Strength development of mortars containing ground granulated blast-furnace slag: Effect of curing temperature and determination of apparent activation energies[J] S.J. Barnett;M.N. Soutsos;S.G. Millard;J.H. Bungey Cement and Concrete Research 2005,
123