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Fine coal ash is used to use many years already in the cement concrete in in the homeland , initial purpose is to save cement dosages only , is slow down cement with the deep people who studies to fine coal ash and the function being used for concrete supplying strained pressure,the disheartened be used for the chance concrete of fine coal’s is also more and more many , adulterate adding the disheartened concrete of fine coal can save cement dosages not only, can improve concrete peaceability, or fall off with the water yield, improve or the concrete later stage intensity , reduce or the concrete temperature waiting litre, But fine coal ash adulterates amounts being in 15-25 always under the control of %. Adulterating amounts disheartened fine coal concretes (HFCC) greatly is one kind of new model cement concrete , under normal conditions, fine coal ash adulterates amounts reaching the general gelled material 50% (volume ratio) , the minimum is lower than 40% not to, fine coal ash already becomes the concrete important component , is the gelled material replacing cement’s simplely no longer , increase greatly since fine coal ash adulterates amounts, change happened in HFCC function (the job waits if the early phase intensity, blends a thing) also with that , bring a lot of trouble, to a lot of trouble HFCC project application, specifically for this condition, The main body of a book is adopt to exceed standard fine coal ash of country adulterating amounts , is tied in wedlock attracting the gas high-effect subtraction water aqua, specifically for Inner Mongolia area characteristic, mix inner Mongol nationality II level fine coal ash , bitter edible plant in the concrete be that the high-effect subtraction water aqua adulterates material outside the two kinds , come to improve main concrete function, especially the concrete freezing resistance. About that this purpose , thesis gelatinize a modulus combining with closely knit modulus and fine coal ash brought forward by Professor Wang Li Jiu of Dalian University of Technology, the experiment adopt orthogonality design procedures, be tied in wedlock study of material and mathematical statistics knowledge, lower and much factor interaction time of concrete intensity and freezing resistance change extent and effect mechanism have carried out comparative analysis on Shan factor effect , can not guide exclusively with lower Shan factor effect experiment bear fruit action when suggesting that fine coal ash adulterates material mixing diversity in the concrete adulterate amounts, Come to improve some one kinds of the outside adulterating material’s adulterating amounts changing some concrete item functions, must adulterate material with the outside testing that the conclusion reaching comes to decide that kind concretely dosages, comparatively rational one resisting adulterating material freezes the ratio fitting besides the at last has given height out two kinds in resisting to mix an experiment in jelly concrete combining with my area characteristic , the concrete applies to my area irrigation works providing certain reference value, and looks into the distance bringing forward a few for fine coal ash, assume a reference for person of the same trade or occupation studies.
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