大掺量粉煤灰混凝土导温系数试验研究.pdf

１０８ ・ ２０１４ １０ ：１００７‐２２８４ （２０１４ ）１０‐０１０８‐０５ １ １ ２ 　 ， ， （１ ． ， ７１２１００ ；２ ．， ２４２０００） 　 　 　 ：，、、、 ５ 。 ： ，、，：＞ ＞ ＞ ＞ ＞ ，，， 。 　 　 ：；；； 　 　 ：T U ５２８ ．０１　 　 　 ：A Experimental Research on the Thermal Diffusivity of High Content Fly ‐ash Concrete １ １ ２ SUN Yang ，LOU Zong‐ke ，ZHU Wei‐ ong y （１ ．College of Waterresource and A rchitecture Engineering ，Northw est Ag ricultural and Forestry U niversity ，Yangling ７１２１００ ， Shanxi Province ，China ；２ ，Xuancheng Water Authority of Auhui Province ，Xuancheng ２４２０００ ，A nhui Province ，China ） Abstract ：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 ，w ater‐cement ratio ， sand ratio ，w ater reducing agent dosage and aggregate concrete of dry and w et condition are considered in this test ．T he results indi‐ cate that sand ratio ，the content of fly ash and w ater reducing agent are the significant factors ．T he significance of these factors is as follow s ：sand ratio ，fly ash ，w ater reducing agent dosage ，agg regate concrete of dry and w et condition ，w ater‐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 reg ression equation reg ression analy sis ． Key words ：flash ash ；thermal diff usivity ；orthogonal ex periment ；concrete ，， 0 　 　 ， ［１］ ，，