【摘要】 采用优质Ⅰ级粉煤灰对碱骨料反应进行抑制效果的研究 ,结果表明 ,用粉煤在抑制碱骨料反应 ,其掺量因素大于品质因素对抑制效果的影响 ;通过不同碱浓度溶液中粉煤灰中碱的溶出情况 ,探讨了在混凝土孔溶液碱浓度下 ,粉煤灰中碱的溶出情况以及用高碱含量粉煤灰抑制碱骨料反应时 ,低掺量促进膨胀 ,高掺量抑制膨胀现象的机理更多还原

【Abstract】 The results of the research on controlling AAR with high quality grade I fly ash reveal that the quantity of fly ash added produces more effect on controlling AAR than its quality. By analyzing the dissolving-out condition of alkali contained in fly ash in the solutions with different concentrations of alkali, the authors make an approach to the dissolving-out condition of alkali contained in fly ash at the alkali concentration of solution in concrete pores. The authors also approach such a phenomenon that the low content of fly ash helps swelling, while the high one controls swelling when the fly ash with high content of alkali is used to control alkali-aggregate reaction更多还原