两种表征粉煤灰-水泥复合浆体整体水化程度方法对比研究  

Comparative Study on Characterization Methods of Integrate Hydration Degree of 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1期17-23,共7页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51302070)

摘　　要：采用了化学结合水法(Chemical Combined Water Content Method,CC)和水化热法(Hydration Heat 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)的整体水化程度。通过水化产物解耦分析得到了粉煤灰-水泥复合浆体理论完全水化时的化学结合水含量;通过提高养护温度加速复合浆体水化反应,结合Knudsen方程线性拟合得到了更为理想的粉煤灰-水泥复合浆体完全水化放热量(Qmax)。粉煤灰-水泥复合浆体整体水化程度随粉煤灰掺量的提高、养护温度的升高和水胶比的增大而增大。The chemical combined water content method and the hydration heat method were used to study the integral hydration degree of fly ash-cement compounds（namely FA-C）with different amount of fly ash, different curing temperatures and variable water ratios. Through decoupling analysis of hydration products,we got the chemically combined water content of fly ash-cement compound pastes under the theoretical hydration. Combined with linear extraction by Knudsen equation, we got a more ideally entirely hydration heat of FA-C through improving the curing temperature to accelerate the reaction of FA-C. The integral hydration degree of FA-C increases with the rising of content of fly ash, the curing temperature and the water ratio.

关 键 词：粉煤灰 化学结合水 水化热 整体水化程度 Knudsen方程 

分 类 号：TU528[建筑科学—建筑技术科学]