CAJ | 학술논문

为研究大掺量粉煤灰混凝土的导温系数，本文利用正交试验测定在粉煤灰掺量、水胶比、砂率、减水剂掺量以及骨料干湿状态5个因素影响下混凝土导温系数的变化规律。结果表明：各因素均为混凝土导温系数的显著性影响因素，其中砂率、粉煤灰和减水剂掺量为极显著影响因素，各因素的影响顺序为：砂率＞粉煤灰掺量＞减水剂掺量＞＞骨料干湿状态＞水胶比，并得到导温系数取得最大和最小时的最优配合比，最后应用回归分析得到回归方程，为大掺量粉煤灰混凝土导温系数的预估提供参考。
위연구대참량분매회혼응토적도온계수，본문이용정교시험측정재분매회참량、수효비、사솔、감수제참량이급골료간습상태5개인소영향하혼응토도온계수적변화규률。결과표명：각인소균위혼응토도온계수적현저성영향인소，기중사솔、분매회화감수제참량위겁현저영향인소，각인소적영향순서위：사솔＞분매회참량＞감수제참량＞＞골료간습상태＞수효비，병득도도온계수취득최대화최소시적최우배합비，최후응용회귀분석득도회귀방정，위대참량분매회혼응토도온계수적예고제공삼고。
In order to study the thermal conductivity of high volume of fly ash concrete ,the changing rule of the thermal conductivity of concrete is quantitatively investigated by the orthogonal test .Such testing variables as the fly ash content ,water-cement ratio , sand ratio ,water reducing agent dosage and aggregate concrete of dry and wet condition are considered in this test .The results indi-cate that sand ratio ,the content of fly ash and water reducing agent are the significant factors .The significance of these factors is as follows :sand ratio ,fly ash ,water reducing agent dosage ,aggregate concrete of dry and wet condition ,water-cement ratio .Based on the optimal combination of the maximum and minimum of thermal conductivity ,a reference is provided for the estimated thermal dif-fusivity by the regression equation regression analysis .