复合胶凝浆体中粉煤灰组分反应程度定量表征方法研究  

Quantitative Characterization Study on Hydration Degree of Fly Ash Content in Fly Ash and Cement Composite Blend Pastes

作　　者：王志亮[1] 丁庆军[1] 黄修林[2] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]湖北大学材料科学与工程学院,武汉430062

出　　处：《武汉理工大学学报》2014年第2期32-37,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51302070)

摘　　要：采用了盐酸选择性溶解法(Hydrochloric Acid Selective Dissolution Method,SD)和核磁共振法(Nuclear Magnetic Resonance Method,HH)共同研究了不同粉煤灰掺量、不同养护温度和不同水胶比下粉煤灰-水泥复合浆体(Fly Ash-Cement,FA-C)中FA组分的水化程度。两方法所得规律一致:粉煤灰-水泥复合浆体中FA组分水化程度随着粉煤灰掺量的提高而降低,随着养护温度的升高和水胶比的增大而提高。粉煤灰-水泥复合浆体FA组分水化程度定量表征研究中,核磁共振法表征值高于选择性溶解法,两者的差值随FA掺量的增加而减小,随养护温度的升高和水胶比的增大而增大。Two methods called by Hydrochloric Acid Selective Dissolution Method and Nuclear Magnetic Resonance Method were used to study the integral hydration degree in different amount of fly ash, different curing temperatures and variable water ratios of fly ash-cement compounds（namely FA-C）. These two different methods got the same rule., with the increasing of content of the fly ash in FA-C, the curing temperature and water ratio increase, and the hydration degree of pure fly ash decreases. In the quantitative characterization study of hydration degree of FA-C, the value tested by NMR method is bigger than that by selective solution method. The difference of values gotten by two different methods decrea- ses with the increasing content of fly ash,and increases with the increasing curing temperature and the water ratio.

关 键 词：粉煤灰 选择性溶解 核磁共振 水化程度 

分 类 号：TU528[建筑科学—建筑技术科学]