a[mm]/l - Memorial University of Newfoundland DAI

Mmouk and Husretn (1991) reported that the use of the cuble mot of the
compresave strength to predlet rhc punehtng shear reststance of hcgh-smngth concrete
slabs Ir much better erprerrnon compared to the square mot expresseon used m all Nonh
Amencan coder. Mvnouk and Jtang (1994) ~nvcsrtgatcd rlr different methods la
enhancement of the punchang shear capacity. The strucrural behawor of hnoh-nrengh
concrete plater rvns cvalunrcd ~n terms of ovcrrll load-defleetmn response. ulilmotc
loadrng capaerty. ducultly and energy absarpoon. Fanlure patterns and nlnm dtstnhut~an
we= also dlscurrcd.
2.13. Mix Design of High-Strength Concrete
Hlgh-strength concrete IS made wlrh the rumc baste ~ngredlentr as normal-strength
concrete. Famy and Pana~ (1993) reported that the praducuon of hlgh-xrcnglh
concrete is achncvcd by opt!mizar~on of the follaw~ng facton.
(1) ehaactenrt~cr of the eemenung medium.
(2) chnnctcnrtxe~ of the aggregates.
(3) pmportlonr of the pasts.
(4) paste-agpgates ~ntsraclian.
(5) mixmg, consolidating, and cunng. md
(6) testing pmecdum.
Some relatan of mmalr and mlxrng methods are being explored thmugh research.
However, atlendon to the &ve nx basic arras Ir of exveme impanance whether wlng
exirttng or new materials and techniques. In the United Stater and Canada, the ACI