本文模拟气候循环，综合研究了干缩、冻融及碳化等外界因素与粉煤灰蒸养砖的内在品质因素：有效氧化钙含量、碳含量及制品孔结构等的相关性。同时讨论了碱泥、石膏等外加剂对制品性能及微观结构的影响，研究结果表明，选用烧失量较低的原状粉煤灰．控制有效氧化钙含量为15.3％及外掺3％的碱泥和1.7—2．6％的石膏，可以有效地改善试件的耐大气侵蚀能力。 This paper simulates the climate cycle and comprehensively studies the external factors such as shrinkage, freezing and thawing, and carbonization, as well as the intrinsic quality factors of fly ash steam-cured bricks: the correlation of effective calcium oxide content, carbon content, and product pore structure. At the same time, the effects of alkali mud, gypsum and other admixtures on the properties and microstructure of the products were discussed. The results show that the original fly ash with low ignition loss is selected. Controlling the effective calcium oxide content by 15.3% and adding 3% alkali sludge and 1.7-2.6% gypsum can effectively improve the atmospheric corrosion resistance of the test piece.