Here is a study on the physical and mechanical properties of the naturally conserved regenerated fly-ash concrete.The result from the study indicates that fixing the amount of the regenerated raw materials and admixing proper amount of fly-ash can improve the compression strength of the regenerated concrete and the improved effects vary according to the ingredients and their different amounts of the regenerated raw materials.With the increase of the added amount of the fly-ash,the maximum values of the bone-dryness density and compression strength of the regenerated concrete appear.But when the maximum values appear,the admixture of the fly-ash is different.The water absorption of the regenerated concrete and the water consumption of the mixtures keep rising with the increase of the admixture of the fly-ash.When the regenerated concrete and the products made of it are prepared and produced,the mixture of the fly-ash should be determined reasonably.
