F. . Zulkarnain, R. Efrida, and S. Frapanti, “Analysis of The Addition Polypropylene Fibre and 8670 Mn Viscocrete added Material on The Split Tensile Strength and Modulus of Elasticity of Concrete ”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 10, pp. 8798–8806, Oct. 2023.