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1903A.6 [OSHPD 1 & 4] Limits on Cementitious Materials
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Modify ACI 318 Section 26.4.2.2(b) and Table 26.4.2.2(b) as follows:
The maximum percentage of pozzolans, including fly ash and silica fume, and slag cement in concrete assigned to all exposure categories shall be in accordance with Table 26.4.2.2(b) and Section 26.4.2.2(b) Items (1) and (2).
Where pozzolans are used as cementitous materials, duration for minimum specified compressive strength of concrete (f'c) that exceeds 28 days shall be considered an alternative system.