中文摘要：

研究了不同水灰比（0．3、0．35和0．4），不同粉煤灰掺量（0，15％，20％，40％，60％）下混凝土二维和三维碳化深度；建立了二维和三维碳化的测试方法；提出了二维和三维碳化的数学模型。试验表明。混凝土的二维、三维碳化深度和一维碳化相似．也服从时间t的指数函数；水灰比对二维碳化的影响最大，一维其次，三维最小；粉煤灰掺量小于15％时，其对三维的影响最大，二维其次。一维最小；粉煤灰掺量大于15％时，掺量对二维、三维碳化的影响和一维碳化影响相近。混凝土二维和三维碳化研究对混凝土结构耐久性和寿命预测具有现实意义。

英文摘要：

1D, 2D and 3D carbonation are studied on different water to cement ratio（0.3, 0.35, 0.4） and different fly ash proportion（0 %, 15 %, 20 %, 40 %, 60 % ） ; The test method of 2D and 3D carbonation were built; The mathematical model of 2D and 3D carbbnation was put forward. The experiment indicates, compared to the depth of one dimension carbonation, the depth of 2D and 313 are obeyed the exponential function time t, too;W/C is largest to the influence of 2D carbonation, 1D second, 3D is the smallest. Fly ash mixing capacity is smaller than 15 %, it is largest to the influence of 3D carbonation, 2D second, 1D is the smallest; Fly ash mixing capacity is more than 15 %, the influence to 2D and 3D is close to 1D. The research of the 2D and 3D carbonation of concrete possesses the real meaning to the structure durability and life prediction of concrete.