SyafwandiS. and CerraR. (2021) “The Effect of Substitution of Coarse and Fine Aggregates with Shells of Blood Clams and Cement With Fly Ash and The Additional of Superplasticizer Against The Compressive Test”, IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734, 4(2), pp. 148-156. doi: 10.29138/ijti.v4i2.1344.