【摘要】 通过对粉煤灰加气混凝土在不同环境条件下历经８ａ的长期观测，并结合相应的实验室冻融循环、干湿循环、以及人工和自然碳化试验研究，分析探讨了其长期强度的劣化机理。指出引起粉煤灰加气混凝土长期强度下降的主要因素是碳化，而冻融循环和干湿循环仅在一定的条件下才会加剧其强度劣化。更多还原

【Abstract】 Based on the test results of freezing and thawing, dry-moisture cycling, carbonation under manmade and natural conditions, the deterioration mechanism of long-term compressive strength of flyash aerated concrete is studied. The study shows that the main factor for the long term strength reduction is carbonation,and in ordinary practical conditions, damage induced by freezing and thawing and dry-moisture cycling is not ohvious.更多还原