SyafwandiS., and CerraR. “he ffect of ubstitution of oarse and ine ggregates ith hells of lood lams and ement ith ly sh and he dditional of uperplasticizer gainst he ompressive est”. JTI nternational ournal of ransportation and nfrastructure ISSN 2597-4769 ISSN 2597-4734, ol. 4, no. 2, May 2021, pp. 148-56, doi:10.29138/ijti.v4i2.1344.