摘要
为探明水工混凝土在冻融环境下各影响因素对其抗冻耐久性的影响重要程度,选取处于甘肃省景泰川电力提灌区(简称"景电灌区")混凝土建筑物为研究对象,以混凝土室内冻融加速试验为基础,利用粗糙集的信息熵理论,将硫酸盐浓度、粉煤灰掺量、矿粉掺量和碳化时间作为条件属性,混凝土相对动弹性模量视为决策属性,确定了各影响因素的权重大小。结果表明:粉煤灰掺量(0.310)权重最大,碳化时间(0.258)次之,矿粉掺量(0.238)和硫酸盐侵蚀(0.194)最小,与试验结果相符。相关研究为混凝土抗冻耐久性影响因素的评价提供了有益参考。
In order to investigate the effect of hydraulic concrete in freeze-thaw environment of various factors on the durability of the important degree, we selected in Gansu Province Jingtai Sichuan electric pumping concrete buildings as the research object, the concrete freeze-thaw indoor accelerated test as the foundation, by using the information entropy theory in rough sets, the sulfate concentration, fly ash dosage, dosage of slag powder and concrete carbonation time as condition attributes, relative dynamic elastic modulus as the decision attribute, determine the weights of various factors. The results show that the fly ash （0.310） maximum weight, carbonization time （0.258） of the slag powder content （0.238） and sulfate （0.194） minimum, agree with the results of tests. Related research provides a useful reference for the evaluation of the influence factors of concrete frost resistance.
出处
《中国农村水利水电》
北大核心
2017年第7期131-136,共6页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51279064
51579102)
河南省教育厅科技创新人才支持计划(14HASTIT047)
河南省教育厅科技创新团队支持计划(14IRTSTHN028)
2017年河南省杰出人才支持计划
关键词
混凝土
粗糙集
抗冻耐久性
权重
concrete
rough set
frost-resisting durability
weight
