Relationship Between Tensile Strength And Compressive Strength Of Hydraulic Fly Ash Concrete

The relationship between compressive strength and tensile strength of fly ash concrete is demonstrated by the concrete block of 20 groups. Among them, through different mix proportion design to adjust each group of different mineral content and the amount of raw materials, in order to control the different water cement ratio, sand ratio, etc.. The compressive strength and working performance of concrete can be improved effectively by adding a certain amount of fly ash and silica fume in the mix proportion design. Test results show that concrete early strength is low and a large number of the incorporation of fly ash are inseparable, but from the point of view of the whole process of late and the strength increase is still relatively fast; secondly, different silica fume concrete water cement ratio of concrete strength of different. When silica fume content is 2%, the early strength increased, the intensity of the latter to be higher than that of the early early strength; when the silica content was 5%, early strength gap larger, later strength gap smaller; when the silica content was 10%, early strength of rapid growth, but after 28 days slower growth; when silica fume is 12%, after 28 d strength to 7d strength increase one times the left and right sides.