矿粉掺量对受酸雨侵蚀混凝土性能劣化规律的影响

the Effects of Ground Granulated Blast Furnace Slag(GGBFS) Contents on Deterioration Law of Concrete under Acid Rain Attack

模拟了混凝土受酸雨侵蚀的试验,从质量、抗压强度、吸水率、酸性化深度等方面研究了矿粉掺量(0~40%)对受酸雨侵蚀混凝土性能劣化规律的影响。结果表明:矿渣粉在酸雨侵蚀早期能发生活性效应,提高混凝土浆体致密性。在1~2个月后,酸雨侵蚀速率较侵蚀初期有所下降。当矿粉掺量在20%~30%时,混凝土的抵抗酸雨侵蚀性能最佳。

The test on the concrete under acid rain attack is simulated to study the effects of Ground Granulated Blast Furnace Slag（GGBFS） contents（0 -40%）on the concrete deterioration in terms of mass, compressive strength, water absorption and acidification depth. The results show that GGBFS can exert activity effects in the early age of acid rain attack and enhance the compactness of concrete structure. After exposure for 1 -2 months, the deterioration rate of acid rain gets slower compared with the early age. And concrete with GGBFS dosage of 20% -30% is observed to have the optimal performance under acid rain attack.