摘要
This paper describes an orthogonal experiment on the effect of water/cement ratio,water consumption per cubic meter,curing time,and type of sand on the response＂resistance to chloride ion penetration＂.A sea-sand containing concrete was used for the trials.An analysis of chloride ion diffusion coefficients at different factor levels was performed.A predictive model of chloride ion diffusion in concrete is developed through regression analysis.The experimental results show that when the water/cement ratio varies from 0.45 to 0.60,and the water consumption per cubic meter varies from 185 to 215 kg,and the curing time varies from 30 to 180 d then the size of the effects fall in the order（most significant first）： curing time,type of sand,water consumption per cubic meter,and water/cement ratio.Chloride ion penetration is reduced,and better durability of the concrete is observed,with longer curing times,less water consumption per cubic meter,and a smaller water/cement ratio.
这份报纸在水 / 水泥比率的效果上描述一个直角的实验，在反应鈥渞e sistance 上每沙的立方的米，治好的时间，和类型浇消费到氯化物离子穿入鈥吗？包含水泥的海沙被用于试用。在不同因素层次的氯化物离子散开系数的分析被执行。在水泥的氯化物离子散开的一个预兆的模型通过回归分析被开发。试验性的结果看那水 / 水泥比率什么时候从 0.45 ～ 0.60 变化，并且水消费从 185 ～ 215 kg 每立方的米变化，并且治好的时间然后从 30 ～ 180 d 变化在顺序的效果秋天的尺寸(很重要第一) ：治好预定，沙打字，每立方的米浇消费，并且水 / 水泥比率。氯化物离子穿入被减少，并且水泥的更好的耐久性与更长治好时间被观察，少些每立方的米，和更小的水 / 水泥比率浇消费。
基金
This project owes gratitude to the Science and Technology Project (No.2008-K4-27) of Ministry of Housing and Urban-Rural Development
the"Tralented Personnel Nurturing in Six Fundamental Fields"Project of Jiangsu Province and"Qing-Lan Project"
the Science and Technology Project of Jiangsu Bureau of Construction and Supervision (No.JG2007-13)
the Science and Technology Planning Project of Xuzhou City(No.XJ08077)
the Scientific Research Project of Xuzhou Institute of Technology(No.XKY2008225).
