In recent building practice, rapid construction is one of the principal requisites. Furthermore, in designing concrete structures, compressive strength is the most significant of all parameters. While 3-d and 7-d compressive strength reflects the strengths at early phases, the ultimate strength is paramount. An effort has been made in this study to develop mathematical models for predicting compressive strength of concrete incorporating ethylene vinyl acetate (EVA) at the later phases. Kolmogorov-Smirnov (KS) goodness-of-fit test was used to examine distribution of the data. The compressive strength of EVA-modified concrete was studied by incorporating various concentrations of EVA as an admixture and by testing at ages of 28, 56, 90, 120, 210, and 365 d. An accelerated compressive strength at 3.5 hours was considered as a reference strength on the basis of which all the specified strengths were predicted by means of linear regression fit. Based on the results of KS goodness-of-fit test, it was concluded that KS test statistics value (D) in each case was lower than the critical value 0.521 for a significance level of 0.05, which demonstrated that the data was normally distributed. Based on the results of compressive strength test, it was concluded that the strength of EVA-modified specimens increased at all ages and the optimum dosage of EVA was achieved at 16% concentration. Furthermore, it was concluded that predicted compressive strength values lies within a 6% difference from the actual strength values for all the mixes, which indicates the practicability of the regression equations. This research work may help in understanding the role of EVA as a viable material in polymer-based cement composites.

在最近的建筑实践中，快速施工是主要要求之一。此外，在设计混凝土结构时，抗压强度是所有参数中最重要的。虽然 3-d 和 7-d 抗压强度反映了早期阶段的强度，但极限强度是最重要的。本研究致力于开发数学模型，用于预测后期加入乙烯醋酸乙烯酯 (EVA) 的混凝土的抗压强度。Kolmogorov-Smirnov (KS) 拟合优度检验用于检查数据的分布。通过将不同浓度的 EVA 作为外加剂并在 28、56、90、120、210 和 365 天的年龄进行测试，研究了 EVA 改性混凝土的抗压强度。加速抗压强度为 3。5 小时被视为参考强度，在此基础上通过线性回归拟合预测所有指定强度。根据 KS 拟合优度检验的结果，得出的结论是，每种情况下的 KS 检验统计值（D）均低于临界值 0.521，显着性水平为 0.05，表明数据呈正态分布。根据抗压强度试验结果得出结论，EVA改性试件的强度随年龄增长而增加，EVA的最佳用量达到16%浓度。此外，得出的结论是，预测的抗压强度值与所有混合物的实际强度值相差 6%，这表明回归方程的实用性。