Modification Mechanism of Low-Dosage Vinyl Acetate-Ethylene on Ordinary Portland Cement-Sulfoaluminate Cement Binary Blended Rapid Repair Mortar.

The flexural strength of reinforced mortar under different polymer–ash ratios was investigated, and the results are as follows: Observing the flexural strength test results in Figure 5 , it can be seen that along with the addition of VAE adhesive powder, the overall flexural strength of the reinforced repair mortar showed a trend of increasing and then decreasing, with the P/C in the range of 0–0.9%.

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We tested the compressive strength of different P/C values, and the results are as follows: As shown in Figure 6 , the compressive strength generally showed a decreasing trend with the increase in VAE powder doping.

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