Advances in Highly Ductile Concrete Research.

In summary, (1) HDC can control the generation and development of cracks to a large extent, and the cracks generated under chloride salt erosion are mostly fine cracks, which can slow down the diffusion rate of chloride ions; (2) Cl − reduces the erosive effect of sulfate on concrete; (3) With the increase in the number of wet and dry cycles in the sulfate environment, the compressive strength of HDC shows an overall trend of increasing and then decreasing, and its resistance to sulfate erosion with wet and dry cycles is significantly better than that of plain concrete; (4) Increasing the concentration of sulfate solution gradually increases the rate of the loss of compressive strength of HDC, and its compressive strength is gradually reduced, which gradually reduces the durability and bearing capacity of highly ductile concrete under dry and wet cycles, and sulfate erosion is the joint result of physical and chemical effects on HDC. 4.2.

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The test results showed that the tensile strength was not affected much after 300 freeze–thaw cycles, but the high w/b tensile strain was affected more and showed a decreasing trend.

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