Experimental Study on the Strength and Deformation Characteristics of Concrete under True Triaxial Compression after Sulfate Attack

To explore the mechanical properties of concrete under true triaxial static compressive load after sulfate attack, uniaxial compression test and at four stress ratios were carried out on specimens immersed in 15% solution for 0–120 days by integrated dynamic testing system, variation performance indicators such as strength deformation coupling action attack complex state was analyzed. The results show that increases beginning then decreases with increase time reaches peak 30th day, an rate 16.57%; significantly, maximum is 3.18 times combination 0-day 0.2 : 0.8 ratio; deterioration more prominent high confining pressure, worsens, sensitivity to lateral reduced. In conclusion, can significantly enhance ductility playing a role restraining cracking attack.