The Study On The Performance Of Phosphorus Slag Concrete Resists Sulfate Attack

This article has analyzed hydration mechanism of the phosphorus dreg concrete, and evaluate the performance of concrete with mineral admixture resists sulfate attack at present. With a large amount of experimental study, adopt coefficient of tensile and coefficient of compression and coefficient of elastic ratio and coefficient of axis compression which based on intensity and mass loss to discussion the performance of phosphorus slag concrete resisting sulfate attack.This paper have studied the influence of mixing amount to the intensity and performance of resisting sulfate attack of the phosphorus slag concrete, have probed into the resisting sulfate attack performance in soaking and wetting-drying cycle environment of dreg concrete of phosphorus.The experimental result of different mixing amount phosphorus slag concrete shows, concrete with 30% phosphorus slag has better performance on compression strength of 28 days and sulfate attack resistance.With the same mixing amount, phosphorus slag concrete is higher than concrete with fly ash and slag and silica-fume in the strength of tensile and compression at 28 days. Phosphorus slag concrete has better performance of sulfate attack resistance by comparing coefficient of tensile and coefficient of compression and coefficient of elastic ratio and coefficient of axis compression and mass loss.Through analyzing and discussion we could have the conclusion that the mixing amount of best phosphorus slag resisting the sulfate attack is 30%;With the same mixing amount phosphorus slag concrete has higher performance of sulfate attack resistance than than concrete with fly ash and slag and silica-fume.