摘要
为解决目前粉煤灰单因子评价方法不能全面综合反映粉煤灰品质的弊端,采用主成分分析方法,建立用于评价大掺量粉煤灰混凝土中粉煤灰品质性能的综合评价法.研究结果表明:利用R软件强大的统计功能,运用主成分分析原理,可以将粉煤灰样本的大量性能表征指标构造成少数的几个变量,并通过计算各样本的主成分值,以各主成分的贡献率为权重值,得出各粉煤灰样本的综合得分,通过最终的主成分综合得分来划分粉煤灰质量等级,实现对粉煤灰品质进行快捷、客观的综合评价.
In order to overcome the disadvantage of single-factor evaluation method of fly ash that it is not able to comprehensively reflect the quality of fly ash, the study adopted the principal component analysis method to establish a comprehensive way of evaluating the quality and the performance of fly ash in the concrete with high fly ash content. The results show that by utilizing the powerful statistical function of sott-ware-R and the principai component analysis theory, a fewer variables can be derived from the vast property characterization indexes of fly ash samples, comprehensive scores of fly ash samples were obtained by calculation of the principal component value and the principal component contribution that as weighted value. Fly ash was graded by the comprehensive score of principal component, by which the quick and objective comprehensive evaluation of fly ash quality could be realized.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2013年第6期759-762,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(51078261)
中国煤炭工业协会科学技术研究指导性计划基金资助项目(MTKJ2011-343)
辽宁工程技术大学市场调研基金资助项目(SCDY2012017)
辽宁工程技术大学大学生创新创业训练计划资助项目(XDC2012048)
关键词
粉煤灰
综合评价
主成分分析
R软件
品质指标
烧失量
细度
需水体积分数比
fly ash
comprehensive evaluation
principal component analysis
software-R
quality indexes
losson ignition
fineness
water demand ratio
