外加剂对混凝土孔隙特征影响的分形评价
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摘要
混凝土在其形成和服役过程中表现出了一系列分形的特征,介绍了混凝土孔隙的测试方法、混凝土孔隙的分形维数的计算方法、用压汞法测试了6组混凝土的孔结构数据,且计算了其孔隙分形维数,并结合SEM微观分析对外加剂对混凝土孔隙特征的影响进行了评价。
Concrete demonstrated a series of fractal characteristics in the process of its formation and work. This paper mainly introduced the testing methods of concrete porosity,the calculation method of concrete pore fractal dimension,used the pressure mercury method tested the pore structure data of six groups concrete,calculated their porosity fractal dimension,and combined with SEM micro-analysis the effect of admixture on concrete porosity characteristics was evaluated.
Concrete demonstrated a series of fractal characteristics in the process of its formation and work. This paper mainly introduced the testing methods of concrete porosity,the calculation method of concrete pore fractal dimension,used the pressure mercury method tested the pore structure data of six groups concrete,calculated their porosity fractal dimension,and combined with SEM micro-analysis the effect of admixture on concrete porosity characteristics was evaluated.
引文
[1] Mehta P K,Burrows R W.Building lurable structures in the21st century[J].Concrete International,2001(3):57-63.
[2]唐明.混凝土材料分形特征及应用研究[D].哈尔滨:哈尔滨工业大学,2003.
[3]夏春,刘浩吾.混凝土细骨料级配的分形特征研究[J].西南交通大学学报,2002,37(25):186-189.
[4]郑英,周英彪,郑楚光.多孔CaO孔隙结构的分形描述[J].华中科技大学学报,2001,29(3):82-84.
[5]李永鑫,陈益民,等.粉煤灰-水泥浆体的孔体积分形维数及其与孔结构和强度的关系[J].硅酸盐学报,2003,31(8):774-779.
[6] Shah S P,Wang K,Weiss J.Mixture proportioning for durable concrete[J].Concrete International,2000(9):73-78.
[7]喻乐华,欧辉,段庆普.掺珍珠岩水泥石孔分形维数及其与孔结构、强度的关系[J].材料科学与工程学报,2007,25(2):201-204
[8] Aitcin P C.The durability characteristics of high performance concrete:a review[J].Cement and Concrete Composites,2003,25(4/5):409-420.
[2]唐明.混凝土材料分形特征及应用研究[D].哈尔滨:哈尔滨工业大学,2003.
[3]夏春,刘浩吾.混凝土细骨料级配的分形特征研究[J].西南交通大学学报,2002,37(25):186-189.
[4]郑英,周英彪,郑楚光.多孔CaO孔隙结构的分形描述[J].华中科技大学学报,2001,29(3):82-84.
[5]李永鑫,陈益民,等.粉煤灰-水泥浆体的孔体积分形维数及其与孔结构和强度的关系[J].硅酸盐学报,2003,31(8):774-779.
[6] Shah S P,Wang K,Weiss J.Mixture proportioning for durable concrete[J].Concrete International,2000(9):73-78.
[7]喻乐华,欧辉,段庆普.掺珍珠岩水泥石孔分形维数及其与孔结构、强度的关系[J].材料科学与工程学报,2007,25(2):201-204
[8] Aitcin P C.The durability characteristics of high performance concrete:a review[J].Cement and Concrete Composites,2003,25(4/5):409-420.