复杂环境下混凝土耐久性评价模型
|
摘要
已有的混凝土耐久性评估未能综合考虑多种因素的作用,与现场混凝土所处环境存在巨大差异,特别是对于矿区的复杂环境下混凝土寿命预测是工程实践中迫切需要解决的问题。在混凝土耐久性影响因素重要性的判断准则基础上,采用二元比较模糊决策分析法确定相应环境下耐久性影响因素的权重,提出年限法预测混凝土耐久性寿命,从而建立复杂环境下混凝土耐久性评价模型。通过对复杂环境下不同配合比混凝土的寿命预测对比,验证模型的适用性。
Current life prediction for durability of concrete failed to take the result of many factors into consideration,differing from the engineering applications enormously,and especially the life prediction under complex environment of mining area is an urgent problem in engineering practice.Based on the significance criterion on influence factors on concrete durability,the weight of each influence factor index in a specific environment is determined with the binary fuzzy comparison method,meanwhile the period method is proposed to establish the evaluation model of concrete durability under complex environment.By comparing the life prediction of concrete with different mix under complex environment,the applicability of the evaluation system proposed is verified.
Current life prediction for durability of concrete failed to take the result of many factors into consideration,differing from the engineering applications enormously,and especially the life prediction under complex environment of mining area is an urgent problem in engineering practice.Based on the significance criterion on influence factors on concrete durability,the weight of each influence factor index in a specific environment is determined with the binary fuzzy comparison method,meanwhile the period method is proposed to establish the evaluation model of concrete durability under complex environment.By comparing the life prediction of concrete with different mix under complex environment,the applicability of the evaluation system proposed is verified.
引文
[1]李勤山,高山林,刘剑飞,等.矿区混凝土构件腐蚀因素分析[J].采矿技术,2006(3):190.
[2]易成,刘燕,等.混凝土耐久性评价体系的缺陷与解决途径[J].混凝土,2008(11):32-36.
[3]钢铁工业建(构)筑物可靠性鉴定规程:YBJ 219-89[S].
[4]混凝土结构耐久性评定标准:CECS 220:2007[S].北京:中国建筑工业出版,2007.
[5]混凝土耐久性检验评定标准:JGJ/T 193-2009[S].北京:中国建筑工业出版社,2009.
[6]高性能混凝土技术[M].北京:原子能出版社,2000.
[7]邸小坛,周燕,顾红祥.混凝土结构的耐久性设计方法[A]//第四届混凝土结构耐久性科技论坛文集-混凝土结构耐久性设计与评估方法[C].北京:机械工业出版社,2006.
[8]吕清芳.混凝土结构耐久性环境区划标准的基础研究[D].杭州:浙江大学,2007.
[9]牛建刚.一般大气环境多因素作用混凝土中性化性能研究[D].西安:建筑科技大学,2008.
[10]PAPADAKIS V G,VAGENAS C G,FARDIS M N.Funda-mental modeling and experimental investigation of concrete car-bonation[J].ACI Materials Journal,1991,88(4):363-373.
[11]PAPADAKIS V G,FARDIS M N,VAGENAS C G.Hyd-ration and carbonation of pozzolanic cements[J].ACI Materials Journal,1992,89(2):119-130.
[12]PAPADAKIS V G,FARDIS M N.Phisical and chemical cha-racteristics affecting the durability of concrete[J].ACI Materials Journal,1991(88):186-196.
[13]高全全,张虎元.大气二氧化碳浓度升高对混凝土碳化的影响[J].混凝土,2007(4).
[2]易成,刘燕,等.混凝土耐久性评价体系的缺陷与解决途径[J].混凝土,2008(11):32-36.
[3]钢铁工业建(构)筑物可靠性鉴定规程:YBJ 219-89[S].
[4]混凝土结构耐久性评定标准:CECS 220:2007[S].北京:中国建筑工业出版,2007.
[5]混凝土耐久性检验评定标准:JGJ/T 193-2009[S].北京:中国建筑工业出版社,2009.
[6]高性能混凝土技术[M].北京:原子能出版社,2000.
[7]邸小坛,周燕,顾红祥.混凝土结构的耐久性设计方法[A]//第四届混凝土结构耐久性科技论坛文集-混凝土结构耐久性设计与评估方法[C].北京:机械工业出版社,2006.
[8]吕清芳.混凝土结构耐久性环境区划标准的基础研究[D].杭州:浙江大学,2007.
[9]牛建刚.一般大气环境多因素作用混凝土中性化性能研究[D].西安:建筑科技大学,2008.
[10]PAPADAKIS V G,VAGENAS C G,FARDIS M N.Funda-mental modeling and experimental investigation of concrete car-bonation[J].ACI Materials Journal,1991,88(4):363-373.
[11]PAPADAKIS V G,FARDIS M N,VAGENAS C G.Hyd-ration and carbonation of pozzolanic cements[J].ACI Materials Journal,1992,89(2):119-130.
[12]PAPADAKIS V G,FARDIS M N.Phisical and chemical cha-racteristics affecting the durability of concrete[J].ACI Materials Journal,1991(88):186-196.
[13]高全全,张虎元.大气二氧化碳浓度升高对混凝土碳化的影响[J].混凝土,2007(4).