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Maizi, M.; Hartawan, .; Nasruddin, .; Imrianti, . Comparison of the Modulus of Elasticity Values of Mortar Specimens With Crumb Rubber Replacing Sand by 10%, 15%, and 20% Before and After Heating at 150 ℃. Eng. Technol. Appl. Sci. Res. 2025, 15, 29738-29744.