粉煤灰性能与其最优掺量的灰色关联分析  

Grey connection analysis between property of fly ash and its optimal content

作　　者：王雪芳[1] 郑建岚[1] 

机构地区：[1]福州大学土木工程学院,福建福州350002

出　　处：《江苏大学学报（自然科学版）》2009年第1期95-99,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50478003);福建省自然科学基金资助项目(2002F007)

摘　　要：为研究粉煤灰品质对混凝土开裂性能的影响,利用改进的平板法分析粉煤灰的品质和掺量对混凝土的开裂性能的影响.同时,采用灰色关联分析方法研究粉煤灰粒径分布与化学成分对其最优掺量的影响.研究结果表明:粒径小于20.4μm的粉煤灰颗粒与其最优掺量是正关联;适当提高粉煤灰中MgO,K2O,CaO与SO3的质量分数和降低烧失量可以提高其最优掺量.In order to study the influence of the quality and content of fiy ash on the cracking behaviors of concrete, the modified fiatype specimen was used. The effects of particle size distribution and oxide component of fly ash on the optimal content for the cracking behavior of high-flowing concrete were studied by grey connection analysis. The results indicate that when the particles size are smaller than 20.4 μm, there are positive effect on the optimal content of fly ash for the cracking behavior of highflowing concrete. Properly increasing the content of MgO, K2O, CaO and SO3 and decreasing the loss on ignition may raise the optimal content of fly ash for the cracking behavior of high-flowing concrete.

关 键 词：粉煤灰 粒径分布 最优掺量 开裂性能 灰色关联分析 

分 类 号：TU528.53[建筑科学—建筑技术科学]