Publication / American Concrete Institute ; [Publication] / American Concrete Institute ; Publication (American Concrete Institute) ; Publication / American Concrete Institute ; SP-48. Publication - American Concrete Institute : SP-50 Publication - American Concrete Institute ; SP-53 Publication - American Concrete Institute ; SP-60 Publication - American Concrete Institute ; SP-63 Publication - American Concrete Institute ; SP-60. Publication - American Concrete Institute ; SP-65.